| Patent | Date |
|---|
Optical amplification in an optical network
Grant 11,438,086 - Akasaka , et al. September 6, 2 | 2022-09-06 |
Optical Transmitter And Control Method For Optical Transmitter
App 20220109506 - Yoshida; Setsuo ; et al. | 2022-04-07 |
Transmission Device, Transmission Method, And Transmission System
App 20220070555 - YAMAUCHI; Tomohiro ; et al. | 2022-03-03 |
Wavelength Converter And Optical Transmission Device That Includes Wavelength Converter
App 20220060273 - Kato; Tomoyuki ; et al. | 2022-02-24 |
Wavelength conversion device and excitation light switching method
Grant 11,243,349 - Yamauchi , et al. February 8, 2 | 2022-02-08 |
Communication device and communication method
Grant 11,228,367 - Tanimura , et al. January 18, 2 | 2022-01-18 |
Wavelength converter and optical transmission device that includes wavelength converter
Grant 11,190,292 - Kato , et al. November 30, 2 | 2021-11-30 |
Wavelength conversion device and method of performing wavelength conversion
Grant 11,163,119 - Yamauchi , et al. November 2, 2 | 2021-11-02 |
Optical transmission device and optical transmission system
Grant 11,165,502 - Ge , et al. November 2, 2 | 2021-11-02 |
Optical Communication Element And Optical Neural Network
App 20210248454 - Akiyama; Tomoyuki ; et al. | 2021-08-12 |
Optical Amplification In An Optical Network
App 20210226719 - Akasaka; Youichi ; et al. | 2021-07-22 |
Optical network device and method for monitoring transmission line
Grant 10,999,659 - Tajima , et al. May 4, 2 | 2021-05-04 |
Optical Network Device And Method For Monitoring Transmission Line
App 20210092498 - TAJIMA; KAZUYUKI ; et al. | 2021-03-25 |
Wavelength converter and transmission apparatus
Grant 10,955,727 - Nakagawa , et al. March 23, 2 | 2021-03-23 |
Wavelength converter apparatus and method of performing wavelength conversion
Grant 10,948,802 - Nakagawa , et al. March 16, 2 | 2021-03-16 |
Reception device and method of detecting supervisory control signal
Grant 10,873,410 - Ge , et al. December 22, 2 | 2020-12-22 |
Optical receiver, optical transmission system, and reception processing method
Grant 10,862,592 - Nakashima , et al. December 8, 2 | 2020-12-08 |
Wavelength Conversion Device And Method Of Performing Wavelength Conversion
App 20200379180 - YAMAUCHI; Tomohiro ; et al. | 2020-12-03 |
Data collecting device and optical transmission system
Grant 10,853,719 - Tanimura , et al. December 1, 2 | 2020-12-01 |
Optical transmission apparatus, optical transmission system, and optical transmission method
Grant 10,797,799 - Nakagawa , et al. October 6, 2 | 2020-10-06 |
Wavelength Converter And Transmission Apparatus
App 20200264492 - NAKAGAWA; GOJI ; et al. | 2020-08-20 |
Optical phase distortion compensating device and method of compensating optical phase distortion
Grant 10,749,604 - Kato , et al. A | 2020-08-18 |
Wavelength Converter And Method Of Performing Wavelength Conversion
App 20200241384 - NAKAGAWA; GOJI ; et al. | 2020-07-30 |
Transmission apparatus, reception apparatus, and method for estimating characteristics of transmission line
Grant 10,720,992 - Tanimura , et al. | 2020-07-21 |
Wavelength Conversion Device And Excitation Light Switching Method
App 20200200973 - YAMAUCHI; Tomohiro ; et al. | 2020-06-25 |
Communication Device And Communication Method
App 20200153504 - Tanimura; Takahito ; et al. | 2020-05-14 |
Transmission Device And Transmission Method
App 20200059313 - Kato; Tomoyuki ; et al. | 2020-02-20 |
Imbalance compensation device, transmission device, and imbalance compensation method
Grant 10,567,077 - Oyama , et al. Feb | 2020-02-18 |
Receiver and receiving method
Grant 10,554,325 - Yamauchi , et al. Fe | 2020-02-04 |
Optical Transmission Device And Optical Transmission System
App 20200036446 - Ge; Yi ; et al. | 2020-01-30 |
Optical transmitter and skew compensation method
Grant 10,498,459 - Nomura , et al. De | 2019-12-03 |
Optical Phase Distortion Compensating Device And Method Of Compensating Optical Phase Distortion
App 20190326999 - Kato; Tomoyuki ; et al. | 2019-10-24 |
Receiving device and phase-error compensation method
Grant 10,439,732 - Oyama , et al. O | 2019-10-08 |
Wavelength conversion device, control-light generation device, wavelength conversion method, and control-light generation method
Grant 10,429,721 - Kato , et al. O | 2019-10-01 |
Optical transmitter, optical transmission apparatus, and optical modulation method
Grant 10,425,166 - Yamauchi , et al. Sept | 2019-09-24 |
Transmission system and method
Grant 10,419,263 - Ge , et al. Sept | 2019-09-17 |
Monitor device and monitor method for monitoring transmission line
Grant 10,419,117 - Tanimura , et al. Sept | 2019-09-17 |
Communication apparatus and method of controlling transmission signal
Grant 10,396,900 - Huang , et al. A | 2019-08-27 |
Transmission device and signal monitoring method
Grant 10,374,703 - Oda , et al. | 2019-08-06 |
Wavelength Conversion Device, Control-light Generation Device, Wavelength Conversion Method, And Control-light Generation Method
App 20190212631 - Kato; Tomoyuki ; et al. | 2019-07-11 |
Receiving device and receiving method
Grant 10,348,407 - Nakashima , et al. July 9, 2 | 2019-07-09 |
Optical transmitter and control method for optical transmitter
Grant 10,341,027 - Huang , et al. | 2019-07-02 |
Optical transmitter, optical receiver and optical transmission method
Grant 10,313,017 - Tanimura , et al. | 2019-06-04 |
Optical Transmission Apparatus, Optical Transmission System, And Optical Transmission Method
App 20190165865 - NAKAGAWA; GOJI ; et al. | 2019-05-30 |
Wavelength conversion device, control-light generation device, wavelength conversion method, and control-light generation method
Grant 10,281,798 - Kato , et al. | 2019-05-07 |
Transmission apparatus, transmission system, and transmission control method
Grant 10,277,313 - Nakashima , et al. | 2019-04-30 |
Signal processing device used in optical receiver and signal processing method
Grant 10,277,328 - Oyama , et al. | 2019-04-30 |
Wavelength Converter And Optical Transmission Device That Includes Wavelength Converter
App 20190109666 - Kato; Tomoyuki ; et al. | 2019-04-11 |
Network controller and signal quality estimating method
Grant 10,256,903 - Oda , et al. | 2019-04-09 |
Transmitter, Receiver, And Transmit Method
App 20190089479 - YAMAUCHI; Tomohiro ; et al. | 2019-03-21 |
Transmission Device And Signal Monitoring Method
App 20190081701 - Oda; Shoichiro ; et al. | 2019-03-14 |
Optical reception apparatus, optical transmission apparatus, optical communication system, and skew adjusting method
Grant 10,219,049 - Nomura , et al. Feb | 2019-02-26 |
Optical Receiver, Optical Transmission System, And Reception Processing Method
App 20190044619 - Nakashima; Hisao ; et al. | 2019-02-07 |
Location measurement apparatus, light modulation converter, and light variation location measurement method
Grant 10,193,621 - Kato , et al. Ja | 2019-01-29 |
Optical Transmitter And Control Method For Optical Transmitter
App 20190028205 - HUANG; GUOXIU ; et al. | 2019-01-24 |
Transmission System And Method
App 20190020531 - Ge; Yi ; et al. | 2019-01-17 |
Optical Transmitter, Optical Transmission Apparatus, And Optical Modulation Method
App 20190020418 - YAMAUCHI; Tomohiro ; et al. | 2019-01-17 |
Transmission Apparatus, Reception Apparatus, And Method For Estimating Characteristics Of Transmission Line
App 20180375580 - Tanimura; Takahito ; et al. | 2018-12-27 |
Optical Reception Apparatus, Optical Transmission Apparatus, Optical Communication System, And Skew Adjusting Method
App 20180376226 - Nomura; Yoshitaka ; et al. | 2018-12-27 |
Optical Transmitter And Skew Compensation Method
App 20180367220 - Nomura; Yoshitaka ; et al. | 2018-12-20 |
Location Measurement Apparatus, Light Modulation Converter, And Light Variation Location Measurement Method
App 20180316422 - Kato; Tomoyuki ; et al. | 2018-11-01 |
Wavelength Conversion Device, Control-light Generation Device, Wavelength Conversion Method, And Control-light Generation Method
App 20180307119 - Kato; Tomoyuki ; et al. | 2018-10-25 |
Imbalance Compensation Device, Transmission Device, Reception Device, And Imbalance Compensation Method
App 20180287699 - OYAMA; Tomofumi ; et al. | 2018-10-04 |
Digital signal processing circuit and signal processing device that includes a plurality of digital signal processing circuits
Grant 10,090,927 - Nakashima , et al. October 2, 2 | 2018-10-02 |
Multi-channel optical cross-phase modulation compensator
Grant 10,090,961 - Kim , et al. October 2, 2 | 2018-10-02 |
Communication Apparatus And Method Of Controlling Transmission Signal
App 20180278336 - HUANG; GUOXIU ; et al. | 2018-09-27 |
Reception Device And Method Of Detecting Supervisory Control Signal
App 20180248643 - Ge; Yi ; et al. | 2018-08-30 |
Error correction circuit and optical transmission system
Grant 10,057,012 - Ge , et al. August 21, 2 | 2018-08-21 |
Monitor Device And Monitor Method For Monitoring Transmission Line
App 20180234184 - Tanimura; Takahito ; et al. | 2018-08-16 |
Low noise colorless, directionless, contentionless reconfigurable optical add/drop multiplexer
Grant 10,050,738 - Akasaka , et al. August 14, 2 | 2018-08-14 |
Receiving Device And Receiving Method
App 20180227056 - Nakashima; Hisao ; et al. | 2018-08-09 |
Low Noise Colorless, Directionless, Contentionless Reconfigurable Optical Add/drop Multiplexer
App 20180212701 - Akasaka; Youichi ; et al. | 2018-07-26 |
Communication Device, Communication System And Communication Method For Transmitting Optical Signal
App 20180175933 - Nomura; Yoshitaka ; et al. | 2018-06-21 |
Multi-channel Optical Cross-phase Modulation Compensator
App 20180167157 - Kim; Inwoong ; et al. | 2018-06-14 |
Network Controller And Signal Quality Estimating Method
App 20180097562 - Oda; Shoichiro ; et al. | 2018-04-05 |
Receiving Device And Phase-error Compensation Method
App 20180076903 - Oyama; Tomofumi ; et al. | 2018-03-15 |
Network controller and signal quality estimating method
Grant 9,906,296 - Oda , et al. February 27, 2 | 2018-02-27 |
Transmission apparatus, reception apparatus and modulation method
Grant 9,887,798 - Nomura , et al. February 6, 2 | 2018-02-06 |
Signal Processing Device Used In Optical Receiver And Signal Processing Method
App 20180034552 - Oyama; Tomofumi ; et al. | 2018-02-01 |
Optical remodulator that remodulates modulated optical signal and optical remodulation method
Grant 9,882,642 - Hoshida January 30, 2 | 2018-01-30 |
Optical Transmitter, Optical Receiver And Optical Transmission Method
App 20180026724 - Tanimura; Takahito ; et al. | 2018-01-25 |
Optical receiver and signal processing method
Grant 9,871,596 - Tanaka , et al. January 16, 2 | 2018-01-16 |
Optical frequency shift device and method
Grant 9,857,662 - Kato , et al. January 2, 2 | 2018-01-02 |
Optical transmitter and method for controlling bias of optical modulator
Grant 9,853,739 - Nakashima , et al. December 26, 2 | 2017-12-26 |
Method and apparatus for correcting inter-channel power imbalance and receiver
Grant 9,825,699 - Zhao , et al. November 21, 2 | 2017-11-21 |
Digital Signal Processing Circuit And Signal Processing Device That Includes A Plurality Of Digital Signal Processing Circuits
App 20170310394 - Nakashima; Hisao ; et al. | 2017-10-26 |
Optical Frequency Shift Device And Method
App 20170307957 - Kato; Tomoyuki ; et al. | 2017-10-26 |
Error Correction Circuit And Optical Transmission System
App 20170250780 - Ge; Yi ; et al. | 2017-08-31 |
Transmission Apparatus, Transmission System, And Transmission Control Method
App 20170222716 - Nakashima; Hisao ; et al. | 2017-08-03 |
Signal processing device and signal processing method
Grant 9,686,020 - Mochizuki , et al. June 20, 2 | 2017-06-20 |
Data Collecting Device And Optical Transmission System
App 20170161602 - Tanimura; Takahito ; et al. | 2017-06-08 |
Optical transmitter, optical receiver, method of compensating non-linear distortion, and communication apparatus
Grant 9,667,347 - Oyama , et al. May 30, 2 | 2017-05-30 |
Optical transmission device, nonlinear distortion compensation method, and nonlinear distortion pre-equalization method
Grant 9,654,224 - Oyama , et al. May 16, 2 | 2017-05-16 |
Transmission Apparatus, Reception Apparatus And Modulation Method
App 20170134115 - NOMURA; Yoshitaka ; et al. | 2017-05-11 |
Optical Remodulator That Remodulates Modulated Optical Signal And Optical Remodulation Method
App 20170104535 - Hoshida; Takeshi | 2017-04-13 |
Optical Receiver And Signal Processing Method
App 20170041080 - Tanaka; Daijiro ; et al. | 2017-02-09 |
Optical transmission device, method of optical transmission, and non-transitory computer-readable medium
Grant 9,564,975 - Akiyama , et al. February 7, 2 | 2017-02-07 |
Optical transmission device, node device, optical transmission method, and optical transmission system
Grant 9,559,771 - Oda , et al. January 31, 2 | 2017-01-31 |
Optical transmitter and method of optical transmission
Grant 9,553,674 - Tanimura , et al. January 24, 2 | 2017-01-24 |
Network Controller And Signal Quality Estimating Method
App 20160373187 - Oda; Shoichiro ; et al. | 2016-12-22 |
Digital coherent receiver and receiving method of optical signal
Grant 9,515,763 - Honda , et al. December 6, 2 | 2016-12-06 |
Signal detection circuit and optical transmission equipment
Grant 9,503,211 - Hironishi , et al. November 22, 2 | 2016-11-22 |
Optical transmission system and optical transmission method
Grant 9,467,228 - Nakashima , et al. October 11, 2 | 2016-10-11 |
Digital coherent receiving apparatus
Grant 9,444,554 - Koizumi , et al. September 13, 2 | 2016-09-13 |
Optical signal transmitter
Grant 9,419,720 - Akiyama , et al. August 16, 2 | 2016-08-16 |
Method And Apparatus For Correcting Inter-channel Power Imbalance And Receiver
App 20160226583 - ZHAO; Ying ; et al. | 2016-08-04 |
Optical transmitter and optical signal transmission method
Grant 9,356,689 - Tanimura , et al. May 31, 2 | 2016-05-31 |
Signal Detection Circuit And Optical Transmission Equipment
App 20160142171 - Hironishi; Kazuo ; et al. | 2016-05-19 |
Signal Processing Device And Signal Processing Method
App 20160094292 - MOCHIZUKI; HIKARI ; et al. | 2016-03-31 |
Signal detection circuit and optical transmission equipment
Grant 9,281,913 - Hironishi , et al. March 8, 2 | 2016-03-08 |
Control timing synchronization method, optical transmission system, and optical transmission apparatus
Grant 9,281,937 - Hoshida March 8, 2 | 2016-03-08 |
Optical Transmission Device, Nonlinear Distortion Compensation Method, And Nonlinear Distortion Pre-equalization Method
App 20160065312 - Oyama; Tomofumi ; et al. | 2016-03-03 |
Optical Transmitter And Method For Controlling Bias Of Optical Modulator
App 20160036533 - Nakashima; Hisao ; et al. | 2016-02-04 |
Optical transmitter and method for controlling bias for optical modulator
Grant 9,240,838 - Akiyama , et al. January 19, 2 | 2016-01-19 |
Optical transmission system, optical transmission apparatus, signal conditioning program, and signal conditioning method
Grant 9,225,459 - Oda , et al. December 29, 2 | 2015-12-29 |
Method and apparatus for compensating nonlinear damage
Grant 9,219,622 - Yan , et al. December 22, 2 | 2015-12-22 |
Wavelength path switching method, optical communication system, optical communication device, optical repeater, and network management device
Grant 9,185,474 - Sone , et al. November 10, 2 | 2015-11-10 |
Digital Coherent Receiver And Receiving Method Of Optical Signal
App 20150288458 - HONDA; TOSHIKI ; et al. | 2015-10-08 |
Frequency modulation signal demodulator and light receiving apparatus
Grant 9,154,233 - Hironishi , et al. October 6, 2 | 2015-10-06 |
Optical transmission system, method of adjusting optical transmission device, and non-transitory computer-readable medium
Grant 9,143,260 - Oyama , et al. September 22, 2 | 2015-09-22 |
Optical transmitter and modulated optical signal generating method
Grant 9,130,680 - Akiyama , et al. September 8, 2 | 2015-09-08 |
Optical Signal Transmitter
App 20150229406 - AKIYAMA; Yuichi ; et al. | 2015-08-13 |
Crosstalk reduction in optical networks using variable subcarrier spectral allocation
Grant 9,100,137 - Vassilieva , et al. August 4, 2 | 2015-08-04 |
Optical transmission apparatus
Grant 9,094,121 - Oyama , et al. July 28, 2 | 2015-07-28 |
Optical transmission system, method of testing optical transmission system, and non-transitory computer-readable medium
Grant 9,083,459 - Oda , et al. July 14, 2 | 2015-07-14 |
Optical Transmitter And Method Of Optical Transmission
App 20150188637 - Tanimura; Takahito ; et al. | 2015-07-02 |
Superimposed signal detection circuit and optical node equipment
Grant 9,071,378 - Hoshida June 30, 2 | 2015-06-30 |
Front end device and superposing signal detecting device
Grant 9,054,814 - Hironishi , et al. June 9, 2 | 2015-06-09 |
Optical transmission system and method for monitoring polarization dependent characteristics of optical transmission line
Grant 9,031,403 - Nakashima , et al. May 12, 2 | 2015-05-12 |
Sampling clock synchronizing apparatus, digital coherent receiving apparatus, and sampling clock synchronizing method
Grant 9,014,575 - Nakashima , et al. April 21, 2 | 2015-04-21 |
Optical path establishing method and optical node apparatus
Grant 8,989,572 - Tanimura , et al. March 24, 2 | 2015-03-24 |
Non-linear Distortion Compensator, Method Of Compensating Non-linear Distortion, And Communication Apparatus
App 20150071656 - Oyama; Tomofumi ; et al. | 2015-03-12 |
Receiver and cross phase modulation reduction method
Grant 8,965,221 - Hironishi , et al. February 24, 2 | 2015-02-24 |
Frequency Modulation Signal Demodulator And Light Receiving Apparatus
App 20150050018 - Hironishi; Kazuo ; et al. | 2015-02-19 |
Excitation light source for raman amplification, raman amplifier, and optical transmission system
Grant 8,947,767 - Mori , et al. February 3, 2 | 2015-02-03 |
Optical transmission/reception system, optical transmitter, optical receiver, and optical transmission/reception method
Grant 8,942,569 - Tanimura , et al. January 27, 2 | 2015-01-27 |
Light receiving device and light receiving method
Grant 8,942,574 - Nakashima , et al. January 27, 2 | 2015-01-27 |
Method and apparatus for compensating nonlinear damage
Grant 8,935,115 - Yan , et al. January 13, 2 | 2015-01-13 |
Optical Transmission System And Optical Transmission Method
App 20140341587 - NAKASHIMA; Hisao ; et al. | 2014-11-20 |
Optical receiver, signal processor, and optical receiving method
Grant 8,886,057 - Hironishi , et al. November 11, 2 | 2014-11-11 |
Apparatus for self-phase modulation noise calculation, apparatus for self-phase modulation noise elimination and optical coherent receiver
Grant 8,886,056 - Li , et al. November 11, 2 | 2014-11-11 |
Optical transmitter and optical transmission method
Grant 8,879,925 - Akiyama , et al. November 4, 2 | 2014-11-04 |
Crosstalk Reduction In Optical Networks Using Variable Subcarrier Spectral Allocation
App 20140314415 - Vassilieva; Olga ; et al. | 2014-10-23 |
Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them
Grant 8,867,927 - Akiyama , et al. October 21, 2 | 2014-10-21 |
Wavelength-tunable light source and wavelength variation method
Grant 8,861,557 - Nakagawa , et al. October 14, 2 | 2014-10-14 |
Light Receiving Device And Light Receiving Method
App 20140301743 - NAKASHIMA; Hisao ; et al. | 2014-10-09 |
Multi-wavelength light source
Grant 8,849,128 - Oda , et al. September 30, 2 | 2014-09-30 |
Control Timing Synchronization Method, Optical Transmission System, And Optical Transmission Apparatus
App 20140270804 - Hoshida; Takeshi | 2014-09-18 |
Wavelength Path Switching Method, Optical Communication System, Optical Communication Device, Optical Relay Device, And Network Management Device
App 20140241719 - Sone; Kyosuke ; et al. | 2014-08-28 |
Optical transmitter
Grant 8,818,207 - Tanaka , et al. August 26, 2 | 2014-08-26 |
Distortion compensator, optical receiver, distortion compensator and optical receiver controlling methods, and optical transmission system
Grant 8,805,207 - Tanimura , et al. August 12, 2 | 2014-08-12 |
Signal Detection Circuit And Optical Transmission Equipment
App 20140219662 - HIRONISHI; Kazuo ; et al. | 2014-08-07 |
Optical Transmitter And Modulated Optical Signal Generating Method
App 20140212136 - Akiyama; Yuichi ; et al. | 2014-07-31 |
Optical amplifier and multicore fiber
Grant 8,773,755 - Nishihara , et al. July 8, 2 | 2014-07-08 |
Optical receiver and optical transmission system
Grant 8,768,173 - Tanimura , et al. July 1, 2 | 2014-07-01 |
Optical receiving apparatus and digital receiving circuit
Grant 8,744,276 - Nakashima , et al. June 3, 2 | 2014-06-03 |
Method for electric power supply of optical receiver, digital signal processing circuit, and optical receiver
Grant 8,744,278 - Oda , et al. June 3, 2 | 2014-06-03 |
Optical Transmission Device, Method Of Optical Transmission, And Non-transitory Computer-readable Medium
App 20140140707 - AKIYAMA; Yuichi ; et al. | 2014-05-22 |
Optical Transmission Device, Node Device, Optical Transmission Method, And Optical Transmission System
App 20140140692 - ODA; Shoichiro ; et al. | 2014-05-22 |
Polarization fluctuation compensation device and optical communication system
Grant 8,731,411 - Oda , et al. May 20, 2 | 2014-05-20 |
Driver circuit of optical modulator
Grant 8,705,981 - Takahara , et al. April 22, 2 | 2014-04-22 |
Optical Transmission System, Method Of Testing Optical Transmission System, And Non-transitory Computer-readable Medium
App 20140105596 - ODA; Shoichiro ; et al. | 2014-04-17 |
Wavelength-tunable Light Source And Wavelength Variation Method
App 20140098828 - NAKAGAWA; GOJI ; et al. | 2014-04-10 |
Optical Transmission System, Method Of Adjusting Optical Transmission Device, And Non-transitory Computer-readable Medium
App 20140099110 - Oyama; Tomofumi ; et al. | 2014-04-10 |
Optical modulation apparatus and optical modulation method
Grant 8,693,891 - Nishihara , et al. April 8, 2 | 2014-04-08 |
Signal Processing Apparatus And Method
App 20140064345 - Sugitani; Kiichi ; et al. | 2014-03-06 |
Digital coherent receiver and receiving method
Grant 8,660,438 - Nakashima , et al. February 25, 2 | 2014-02-25 |
Digital coherent receiving apparatus
Grant 8,649,689 - Koizumi , et al. February 11, 2 | 2014-02-11 |
Light receiving device and light receiving method
Grant 8,649,685 - Nakashima , et al. February 11, 2 | 2014-02-11 |
Frame processing apparatus, optical receiving apparatus, optical transceiving apparatus, optical transmission system, and frame processing controlling method
Grant 8,649,678 - Hoshida , et al. February 11, 2 | 2014-02-11 |
Optical Transmission System And Method For Monitoring Polarization Dependent Characteristics Of Optical Transmission Line
App 20140029938 - Nakashima; Hisao ; et al. | 2014-01-30 |
Digital Coherent Receiving Apparatus
App 20140029959 - KOIZUMI; Nobukazu ; et al. | 2014-01-30 |
Optical transmitter, optical transmission method, and wavelength-selective variable delayer
Grant 8,625,996 - Tanaka , et al. January 7, 2 | 2014-01-07 |
Optical transmission system
Grant 8,594,508 - Nakashima , et al. November 26, 2 | 2013-11-26 |
Optical Transmitter And Optical Signal Transmission Method
App 20130302031 - TANIMURA; Takahito ; et al. | 2013-11-14 |
Optical modulation apparatus and optical modulation method
Grant 8,565,615 - Nishihara , et al. October 22, 2 | 2013-10-22 |
Optical Transmission Apparatus
App 20130259480 - Oyama; Tomofumi ; et al. | 2013-10-03 |
Front End Device And Superposing Signal Detecting Device
App 20130243430 - Hironishi; Kazuo ; et al. | 2013-09-19 |
Method And Apparatus For Compensating Nonlinear Damage
App 20130230313 - YAN; Weizhen ; et al. | 2013-09-05 |
Optical transmitter and optical transmitter unit
Grant 8,526,828 - Nakashima , et al. September 3, 2 | 2013-09-03 |
Nonlinear distortion detecting circuit, optical receiver, optical transmission system, and method for detecting nonlinear distortion
Grant 8,515,277 - Tanimura , et al. August 20, 2 | 2013-08-20 |
Optical Path Establishing Method And Optical Node Apparatus
App 20130209093 - TANIMURA; Takahito ; et al. | 2013-08-15 |
Differential multilevel modulated optical signal receiver apparatus
Grant 8,509,628 - Hironishi , et al. August 13, 2 | 2013-08-13 |
Optical Transmitter And Method For Controlling Bias For Optical Modulator
App 20130202315 - Akiyama; Yuichi ; et al. | 2013-08-08 |
Optical transmitter, optical transmitter and receiver system, optical transmitting method and optical transmitting and receiving method
Grant 8,488,975 - Oda , et al. July 16, 2 | 2013-07-16 |
Excitation Light Source For Raman Amplification, Raman Amplifier, And Optical Transmission System
App 20130162987 - Mori; Shota ; et al. | 2013-06-27 |
Distortion Compensator, Optical Receiver, Distortion Compensator And Optical Receiver Controlling Methods, And Optical Transmission System
App 20130148967 - TANIMURA; Takahito ; et al. | 2013-06-13 |
Distortion compensator, optical receiver, distortion compensator and optical receiver controlling methods, and optical transmission system
Grant 8,447,186 - Tanimura , et al. May 21, 2 | 2013-05-21 |
Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system
Grant 8,447,190 - Tanimura , et al. May 21, 2 | 2013-05-21 |
Optical Transmission System, Pump-light Supply Control Method, And Pump Light Supply Apparatus
App 20130121693 - TANAKA; Toshiki ; et al. | 2013-05-16 |
Optical Transmission System, Optical Transmission Apparatus, Signal Conditioning Program, And Signal Conditioning Method
App 20130121691 - Oda; Shoichiro ; et al. | 2013-05-16 |
Optical network and control method therefor
Grant 8,437,633 - Oda , et al. May 7, 2 | 2013-05-07 |
Frequency Offset Monitoring Device And Optical Coherent Receiver
App 20130094852 - TAO; Zhenning ; et al. | 2013-04-18 |
Optical communication system and optical receiver
Grant 8,406,635 - Nakashima , et al. March 26, 2 | 2013-03-26 |
Coherent light receiving system
Grant 8,406,638 - Hoshida March 26, 2 | 2013-03-26 |
Optical modulation device and optical modulation method
Grant 8,400,702 - Tanaka , et al. March 19, 2 | 2013-03-19 |
Optical Amplifier And Multicore Fiber
App 20130063809 - Nishihara; Masato ; et al. | 2013-03-14 |
Optical receiver for controlling wavelength of local oscillation light and local oscillation light control method
Grant 8,391,725 - Oda , et al. March 5, 2 | 2013-03-05 |
Polarization multiplexing and transmitting apparatus
Grant 8,380,084 - Tanimura , et al. February 19, 2 | 2013-02-19 |
Frequency offset monitoring device and optical coherent receiver
Grant 8,374,512 - Tao , et al. February 12, 2 | 2013-02-12 |
Repeater and repeating method
Grant 8,351,797 - Nakashima , et al. January 8, 2 | 2013-01-08 |
Optical transmission system and optical transmission method
Grant 8,351,795 - Nakashima , et al. January 8, 2 | 2013-01-08 |
Superimposed Signal Detection Circuit And Optical Node Equipment
App 20120328297 - HOSHIDA; Takeshi | 2012-12-27 |
Digital coherent optical receiver
Grant 8,331,805 - Nakashima , et al. December 11, 2 | 2012-12-11 |
Receiver And Cross Phase Modulation Reduction Method
App 20120308233 - Hironishi; Kazuo ; et al. | 2012-12-06 |
Method And Apparatus For Compensating Nonlinear Damage
App 20120290244 - YAN; Weizhen ; et al. | 2012-11-15 |
Multi-wavelength Light Source
App 20120243880 - ODA; Shoichiro ; et al. | 2012-09-27 |
Optical Transmitter
App 20120230694 - Tanaka; Toshiki ; et al. | 2012-09-13 |
Optical Receiver, Signal Processor, And Optical Receiving Method
App 20120213532 - Hironishi; Kazuo ; et al. | 2012-08-23 |
Optical receiver and method for optical reception
Grant 8,249,464 - Oda , et al. August 21, 2 | 2012-08-21 |
Polarization multiplexing optical receiver and polarization multiplexing optical transmission system
Grant 8,249,466 - Hoshida August 21, 2 | 2012-08-21 |
Polarization-multiplexing optical transmitter polarization-multiplexing optical receiver, polarization-multiplexing optical transceiving system, and controlling method thereof
Grant 8,244,138 - Hoshida , et al. August 14, 2 | 2012-08-14 |
Sampling Clock Synchronizing Apparatus, Digital Coherent Receiving Apparatus, And Sampling Clock Synchronizing Method
App 20120195602 - NAKASHIMA; Hisao ; et al. | 2012-08-02 |
Optical Receiver And Optical Transmission System
App 20120177383 - TANIMURA; Takahito ; et al. | 2012-07-12 |
Optical Transmitter, Optical Transmission Method, And Wavelength-selective Variable Delayer
App 20120170928 - TANAKA; Toshiki ; et al. | 2012-07-05 |
Optical Transmitter And Optical Transmission Method
App 20120148260 - AKIYAMA; Yuichi ; et al. | 2012-06-14 |
Optical Transmitter And Optical Transmitter Unit
App 20120141130 - Nakashima; Hisao ; et al. | 2012-06-07 |
Optical Receiving Apparatus And Method
App 20120141131 - TANIMURA; Takahito ; et al. | 2012-06-07 |
Polarization Multiplexing And Transmitting Apparatus
App 20120106962 - TANIMURA; Takahito ; et al. | 2012-05-03 |
Optical Transmitting Apparatus, Optical Receiving Apparatus, And Optical Communication System Comprising Them
App 20120082465 - Akiyama; Yuichi ; et al. | 2012-04-05 |
Optical transmitter
Grant 8,145,069 - Tanaka , et al. March 27, 2 | 2012-03-27 |
Apparatus For Self-phase Modulation Noise Calculation, Apparatus For Self-phase Modulation Noise Elimination And Optical Coherent Receiver
App 20120051742 - LI; Lei ; et al. | 2012-03-01 |
Polarization multiplexing and transmitting apparatus
Grant 8,116,635 - Tanimura , et al. February 14, 2 | 2012-02-14 |
Optical receiver
Grant 8,086,113 - Nakashima , et al. December 27, 2 | 2011-12-27 |
Optical transmission system
App 20110274430 - Nakashima; Hisao ; et al. | 2011-11-10 |
Digital Coherent Receiver And Receiving Method
App 20110255877 - NAKASHIMA; Hisao ; et al. | 2011-10-20 |
Polarization fluctuation compensation device and optical communication system
App 20110249971 - Oda; Shoichiro ; et al. | 2011-10-13 |
Optical Modulation Apparatus And Optical Modulation Method
App 20110229150 - NISHIHARA; Masato ; et al. | 2011-09-22 |
Optical Modulation Apparatus And Optical Modulation Method
App 20110229148 - NISHIHARA; Masato ; et al. | 2011-09-22 |
Coherent optical receiver
Grant 8,014,685 - Hoshida September 6, 2 | 2011-09-06 |
Optical Network And Control Method Therefor
App 20110188851 - ODA; Shoichiro ; et al. | 2011-08-04 |
Transmission system and transmission method
Grant 7,983,564 - Ooi , et al. July 19, 2 | 2011-07-19 |
Light Receiving Device And Light Receiving Method
App 20110170881 - NAKASHIMA; Hisao ; et al. | 2011-07-14 |
Optical Receiver And Receiving Method
App 20110150506 - TANIMURA; Takahito ; et al. | 2011-06-23 |
Optical Transmitter, Optical Transmitter And Receiver System, Optical Transmitting Method And Optical Transmitting And Receiving Method
App 20110097085 - Oda; Shoichiro ; et al. | 2011-04-28 |
Nonlinear Distortion Detecting Circuit, Optical Receiver, Optical Transmission System, And Method For Detecting Nonlinear Distortion
App 20110097075 - TANIMURA; Takahito ; et al. | 2011-04-28 |
Optical modulator and controlling method and apparatus thereof
Grant 7,907,324 - Hoshida , et al. March 15, 2 | 2011-03-15 |
Optical modulation device and optical modulation method
App 20110032594 - Tanaka; Toshiki ; et al. | 2011-02-10 |
Transmission apparatus, transmission system, and method of communication
App 20110026927 - Tanaka; Toshiki ; et al. | 2011-02-03 |
Dispersion compensating apparatus and dispersion compensation control method
Grant 7,869,715 - Ooi , et al. January 11, 2 | 2011-01-11 |
Method and system for automatic feedback control for fine tuning a delay interferometer
Grant 7,869,719 - Hoshida , et al. January 11, 2 | 2011-01-11 |
Digital Coherent Receiving Apparatus
App 20100329697 - KOIZUMI; Nobukazu ; et al. | 2010-12-30 |
Optical receiver and optical reception method compatible with differential quadrature phase shift keying
Grant 7,860,394 - Hoshida December 28, 2 | 2010-12-28 |
Interferometer for demodulating differential M-phase shift keying signal
Grant 7,860,408 - Isomura , et al. December 28, 2 | 2010-12-28 |
Optical transmitting apparatus and optical communication system
Grant 7,848,659 - Miura , et al. December 7, 2 | 2010-12-07 |
Digital Coherent Optical Receiver
App 20100303474 - NAKASHIMA; Hisao ; et al. | 2010-12-02 |
Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them
Grant 7,817,923 - Akiyama , et al. October 19, 2 | 2010-10-19 |
Optical Receiver And Method For Optical Reception
App 20100254718 - ODA; Shoichiro ; et al. | 2010-10-07 |
Optical receiver corresponding to differential M-phase shift keying system
Grant 7,792,436 - Hoshida , et al. September 7, 2 | 2010-09-07 |
Optical modulation device and optical modulation method
Grant 7,773,283 - Tanaka , et al. August 10, 2 | 2010-08-10 |
Distortion Compensating Apparatus, Optical Receiving Apparatus, And Optical Transmitting And Receiving System
App 20100196017 - TANIMURA; Takahito ; et al. | 2010-08-05 |
Polarization Multiplexing Optical Receiver And Polarization Multiplexing Optical Transmission System
App 20100189438 - HOSHIDA; Takeshi | 2010-07-29 |
Optical receiver and optical reception method compatible with differential quadrature phase shift keying
App 20100189437 - Hoshida; Takeshi | 2010-07-29 |
Optical Communication System And Optical Receiver
App 20100189445 - NAKASHIMA; Hisao ; et al. | 2010-07-29 |
Optical DQPSK receiver apparatus
Grant 7,751,721 - Hoshida , et al. July 6, 2 | 2010-07-06 |
Repeater and repeating method
App 20100135663 - Nakashima; Hisao ; et al. | 2010-06-03 |
Differential quadrature phase-shift modulator and method for setting driving voltage thereof
Grant 7,720,392 - Nakashima , et al. May 18, 2 | 2010-05-18 |
Optical Transmission/reception System, Optical Transmitter, Optical Receiver, And Optical Transmission/reception Method
App 20100111531 - Tanimura; Takahito ; et al. | 2010-05-06 |
Optical Receiver For Controlling Wavelength Of Local Oscillation Light And Local Oscillation Light Control Method
App 20100111544 - ODA; Shoichiro ; et al. | 2010-05-06 |
Optical DQPSK receiver apparatus
Grant 7,706,695 - Hironishi , et al. April 27, 2 | 2010-04-27 |
Optical Signal Transmitter
App 20100080571 - Akiyama; Yuichi ; et al. | 2010-04-01 |
Optical signal reception device and method of controlling optical signal reception
Grant 7,689,133 - Katagiri , et al. March 30, 2 | 2010-03-30 |
Phase control apparatus and optical DQPSK receiver
Grant 7,684,713 - Terayama , et al. March 23, 2 | 2010-03-23 |
Repeater and repeating method
Grant 7,680,419 - Nakashima , et al. March 16, 2 | 2010-03-16 |
Method for Electric Power Supply of Optical Receiver, Digital Signal Processing Circuit, and Optical Receiver
App 20100054759 - Oda; Shoichiro ; et al. | 2010-03-04 |
Distortion Compensator, Optical Receiver, Distortion Compensator And Optical Receiver Controlling Methods, And Optical Transmission System
App 20100046961 - TANIMURA; Takahito ; et al. | 2010-02-25 |
Differential multilevel modulated optical signal receiver apparatus
App 20100040383 - Hironishi; Kazuo ; et al. | 2010-02-18 |
Frame Processing Apparatus, Optical Receiving Apparatus, Optical Transceiving Apparatus, Optical Transmission System, And Frame Processing Controlling Method
App 20100027988 - HOSHIDA; Takeshi ; et al. | 2010-02-04 |
Optical Receiving Apparatus And Digital Receiving Circuit
App 20090317092 - NAKASHIMA; Hisao ; et al. | 2009-12-24 |
Optical waveform shaper
Grant 7,631,378 - Hironishi , et al. December 15, 2 | 2009-12-15 |
Multi-level modulation receiving device
Grant 7,630,650 - Hoshida , et al. December 8, 2 | 2009-12-08 |
Optical transmitting apparatus, method of increasing the number of paths of the apparatus, and optical switch module for increasing the number of paths of the apparatus
Grant 7,620,321 - Miura , et al. November 17, 2 | 2009-11-17 |
Differential multilevel modulated optical signal receiver apparatus
Grant 7,613,403 - Hironishi , et al. November 3, 2 | 2009-11-03 |
Optical receiver and optical receiving method corresponding to differential M-phase shift keying system
Grant 7,606,504 - Onaka , et al. October 20, 2 | 2009-10-20 |
Analog-to-digital conversion controller, optical receiving device, optical receiving method, and waveform-distortion compensating device
Grant 7,602,322 - Tanimura , et al. October 13, 2 | 2009-10-13 |
Quadrature phase-shift keying modulator and phase shift amount controlling method for the same
Grant 7,603,007 - Terahara , et al. October 13, 2 | 2009-10-13 |
Method and system for automatic feedback control for fine tuning a delay interferometer
Grant 7,603,045 - Hoshida , et al. October 13, 2 | 2009-10-13 |
Optical modulator and controlling method and apparatus thereof
App 20090244685 - Hoshida; Takeshi ; et al. | 2009-10-01 |
Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor
Grant 7,596,315 - Nakashima , et al. September 29, 2 | 2009-09-29 |
Upgraded optical communication system with increased transmission capacity and method
Grant 7,593,646 - Vassilieva , et al. September 22, 2 | 2009-09-22 |
Optical receiving apparatus and method
App 20090226187 - Tanimura; Takahito ; et al. | 2009-09-10 |
Polarization scrambler, optical add/drop multiplexer, optical route switching apparatus and wavelength division multiplexing optical transmission system
Grant 7,583,895 - Nakamura , et al. September 1, 2 | 2009-09-01 |
Monitor Circuit For Monitoring Property Of Optical Fiber Transmission Line And Quality Of Optical Signal
App 20090214201 - Oda; Shoichiro ; et al. | 2009-08-27 |
Method and System for Automatic Feedback Control for Fine Tuning a Delay Interferometer
App 20090214203 - Hoshida; Takeshi ; et al. | 2009-08-27 |
Method and system for automatic feedback control for fine tuning a delay interferometer
App 20090190924 - Snawerdt; Peter ; et al. | 2009-07-30 |
Optical communication device
Grant 7,555,061 - Katagiri , et al. June 30, 2 | 2009-06-30 |
Method and System for Transmitting Information in an Optical Communication System Using Distributed Amplification
App 20090136229 - Hoshida; Takeshi ; et al. | 2009-05-28 |
Optical receiver and optical reception method compatible with differential quadrature phase shift keying
Grant 7,529,490 - Hoshida May 5, 2 | 2009-05-05 |
Upgraded Optical Communication System with Increased Transmission Capacity and Method
App 20090092395 - Vassilieva; Olga I. ; et al. | 2009-04-09 |
Upgraded optical communication system with increased transmission capacity and method
Grant 7,515,834 - Vassilieva , et al. April 7, 2 | 2009-04-07 |
Optical transmission system and optical transmission method
App 20090087194 - Nakashima; Hisao ; et al. | 2009-04-02 |
Frequency offset monitoring device and optical coherent receiver
App 20090080906 - Tao; Zhenning ; et al. | 2009-03-26 |
Network designing device and computer-readable medium
Grant 7,505,414 - Nakashima , et al. March 17, 2 | 2009-03-17 |
Polarization multiplexing and transmitting apparatus
App 20090060508 - Tanimura; Takahito ; et al. | 2009-03-05 |
Coherent light receiving system
App 20090047030 - Hoshida; Takeshi | 2009-02-19 |
Quadrature Phase-shift Keying Modulator And Phase Shift Amount Controlling Method For The Same
App 20090047028 - TERAHARA; Takafumi ; et al. | 2009-02-19 |
Method and system for transmitting information in an optical communication system using distributed amplification
Grant 7,483,639 - Hoshida , et al. January 27, 2 | 2009-01-27 |
Optical receiving apparatus and method for controlling the optical receiving apparatus
Grant 7,477,848 - Ooi , et al. January 13, 2 | 2009-01-13 |
Driver circuit of optical modulator
App 20080297270 - Takahara; Tomoo ; et al. | 2008-12-04 |
Analog-to-digital Conversion Controller, Optical Receiving Device, Optical Receiving Method, And Waveform-distortion Compensating Device
App 20080272943 - TANIMURA; Takahito ; et al. | 2008-11-06 |
Optical Receiver
App 20080267638 - NAKASHIMA; Hisao ; et al. | 2008-10-30 |
Optical Modulation Device And Optical Modulation Method
App 20080239448 - Tanaka; Toshiki ; et al. | 2008-10-02 |
Polarization-multiplexing optical transmitter polarization-multiplexing optical receiver, polarization-multiplexing optical transceiving system, and controlling method thereof
App 20080232816 - Hoshida; Takeshi ; et al. | 2008-09-25 |
Transmission system and transmission method
App 20080199182 - Ooi; Hiroki ; et al. | 2008-08-21 |
Analog-to-digital conversion controller, optical receiving device, optical receiving method, and waveform-distortion compensating device
App 20080198051 - Tanimura; Takahito ; et al. | 2008-08-21 |
Optical fiber cable
Grant 7,415,182 - Terahara , et al. August 19, 2 | 2008-08-19 |
Coherent optical receiver
App 20080145066 - Hoshida; Takeshi | 2008-06-19 |
Wavelength dispersion compensation design method and a system thereof
Grant 7,382,979 - Akiyama , et al. June 3, 2 | 2008-06-03 |
Compensating method and compensator of first-order polarization mode dispersion, and optical transmission system using same
App 20080080805 - Nakashima; Hisao ; et al. | 2008-04-03 |
Optical Transmitter
App 20080080872 - Tanaka; Toshiki ; et al. | 2008-04-03 |
Dispersion compensating apparatus and dispersion compensation control method
App 20080056710 - Ooi; Hiroki ; et al. | 2008-03-06 |
Multi-level modulation receiving device
App 20080031633 - Hoshida; Takeshi ; et al. | 2008-02-07 |
Phase control apparatus and optical DQPSK receiver
App 20070292140 - Terayama; Yoshikazu ; et al. | 2007-12-20 |
Polarization scrambler, optical add/drop multiplexer, optical route switching apparatus and wavelength division multiplexing optical transmission system
App 20070248361 - Nakamura; Kentaro ; et al. | 2007-10-25 |
Optical DQPSK receiver apparatus
App 20070230625 - Hironishi; Kazuo ; et al. | 2007-10-04 |
Repeater and repeating method
App 20070201878 - Nakashima; Hisao ; et al. | 2007-08-30 |
Method and system for transmitting information in an optical communication system with low signal distortion
Grant 7,254,342 - Odate , et al. August 7, 2 | 2007-08-07 |
Method and system for optical performance monitoring
Grant 7,254,325 - Hoshida August 7, 2 | 2007-08-07 |
Interferometer for demodulating differential M-phase shift keying signal
App 20070177151 - Isomura; Akihiko ; et al. | 2007-08-02 |
Optical DQPSK receiver apparatus
App 20070127933 - Hoshida; Takeshi ; et al. | 2007-06-07 |
Optical signal reception device and method of controlling optical signal reception
App 20070065157 - Katagiri; Toru ; et al. | 2007-03-22 |
Optical transmitting apparatus and optical communication system
App 20070065161 - Miura; Akira ; et al. | 2007-03-22 |
Method and system for transmitting information in an optical communication system using distributed amplification
App 20070053692 - Hoshida; Takeshi ; et al. | 2007-03-08 |
Differential multilevel modulated optical signal receiver apparatus
App 20070047966 - Hironishi; Kazuo ; et al. | 2007-03-01 |
Optical receiving apparatus and method for controlling the optical receiving apparatus
App 20070047964 - Ooi; Hiroki ; et al. | 2007-03-01 |
Differential quadrature phase-shift modulator and method for setting driving voltage thereof
App 20070047969 - Nakashima; Hisao ; et al. | 2007-03-01 |
Delay time adjustment device and optical receiver using it
App 20070003184 - Takahara; Tomoo ; et al. | 2007-01-04 |
Optical receiver and optical receiving method corresponding to differential M-phase shift keying system
App 20060280510 - Onaka; Hiroshi ; et al. | 2006-12-14 |
Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them
App 20060263097 - Akiyama; Yuichi ; et al. | 2006-11-23 |
Optical Transmitting Apparatus, Optical Receiving Apparatus, And Optical Communication System Comprising Them
App 20060263098 - AKIYAMA; Yuichi ; et al. | 2006-11-23 |
Optical fiber cable
App 20060251364 - Terahara; Takafumi ; et al. | 2006-11-09 |
Optical receiver corresponding to differential M-phase shift keying system
App 20060222377 - Hoshida; Takeshi ; et al. | 2006-10-05 |
Wavelength dispersion compensation design method and a system thereof
App 20060193638 - Akiyama; Yuichi ; et al. | 2006-08-31 |
Optical communication device
App 20060193399 - Katagiri; Toru ; et al. | 2006-08-31 |
Optical signal reception device
App 20060193640 - Katagiri; Toru ; et al. | 2006-08-31 |
Optical receiver and optical reception method compatible with differential quadrature phase shift keying
App 20060171718 - Hoshida; Takeshi | 2006-08-03 |
Optical transmission network designing method employing wavelength multiplexed transmission system
App 20060098987 - Hoshida; Takeshi | 2006-05-11 |
Optical transmitting apparatus, method of increasing the number of paths of the apparatus, and optical switch module for increasing the number of paths of the apparatus
App 20060098981 - Miura; Akira ; et al. | 2006-05-11 |
Optical phase modulation
App 20060093377 - Choudhary; Seemant ; et al. | 2006-05-04 |
Network designing device and program
App 20060023641 - Nakashima; Hisao ; et al. | 2006-02-02 |
Optical waveform shaper
App 20050220388 - Hironishi, Kazuo ; et al. | 2005-10-06 |
Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor
App 20050213979 - Nakashima, Hisao ; et al. | 2005-09-29 |
Optical repeating apparatus, optical network system, optical network design supporting apparatus and design supporting method
App 20050185967 - Hoshida, Takeshi | 2005-08-25 |
Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable
App 20050157991 - Terahara, Takafumi ; et al. | 2005-07-21 |
Coupler-based optical cross-connect having a regeneration module
App 20050117908 - Castanon, Gerardo Antonio ; et al. | 2005-06-02 |
Method and system for transmitting information in an optical communication system with low signal distortion
App 20050095007 - Odate, Kaori ; et al. | 2005-05-05 |
Method and system for automatic feedback control for fine tuning a delay interferometer
App 20050047780 - Hoshida, Takeshi ; et al. | 2005-03-03 |
Method and system for optical performance monitoring
App 20040223769 - Hoshida, Takeshi | 2004-11-11 |
Method and system for forward pumping raman amplification in an optical network
App 20040212871 - Hoshida, Takeshi ; et al. | 2004-10-28 |
System and method for multi-level phase modulated communication
App 20040208646 - Choudhary, Seemant ; et al. | 2004-10-21 |
Upgraded optical communication system with increased transmission capacity and method
App 20040184819 - Vassilieva, Olga I. ; et al. | 2004-09-23 |
Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable
App 20040141704 - Terahara, Takafumi ; et al. | 2004-07-22 |
System and method for high bit-rate optical time division multiplexing (OTDM)
App 20040047633 - Hoshida, Takeshi ; et al. | 2004-03-11 |
Distributed optical amplifier, amplifying method, and optical communication system
App 20030123139 - Terahara, Takafumi ; et al. | 2003-07-03 |
Optical phase modulation
App 20030118352 - Choudhary, Seemant ; et al. | 2003-06-26 |
Modulation and filtration of optical signals
App 20030090766 - Choudhary, Seemant ; et al. | 2003-05-15 |
Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable
App 20020076182 - Terahara, Takafumi ; et al. | 2002-06-20 |
Optical communication system, method for supplying pump light, and distributed raman amplifying apparatus
App 20020044324 - Hoshida, Takeshi ; et al. | 2002-04-18 |
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