| Patent | Date |
|---|
Optical Transmitter And Transmission Device
App 20220311534 - SOBU; Yohei ; et al. | 2022-09-29 |
Signal Processing Device And Transmission Device
App 20220303021 - Nomura; Yoshitaka ; et al. | 2022-09-22 |
Transmission reception device and distortion compensation method
Grant 11,349,632 - Nomura , et al. May 31, 2 | 2022-05-31 |
Optical transmission device and optical transmission method
Grant 11,309,968 - Ngo , et al. April 19, 2 | 2022-04-19 |
Transmission device and transmission method
Grant 11,303,483 - Huang , et al. April 12, 2 | 2022-04-12 |
Optical Transmission Device And Optical Transmission Method
App 20220006530 - Ngo; Anh Ha ; et al. | 2022-01-06 |
Adaptive equalizer, optical receiver, and optical transmission system
Grant 11,159,352 - Sasaki , et al. October 26, 2 | 2021-10-26 |
Adaptive equalizer, optical receiver, and adaptive equalization method
Grant 11,146,428 - Sasaki , et al. October 12, 2 | 2021-10-12 |
Transmission Device And Distortion Compensation Method
App 20210297229 - Nomura; Yoshitaka ; et al. | 2021-09-23 |
Optical Modulator And Control Method Of Optical Modulator
App 20210223658 - HUANG; GUOXIU ; et al. | 2021-07-22 |
Adaptive Equalizer, Optical Receiver, And Optical Transmission System
App 20210160108 - SASAKI; Daisuke ; et al. | 2021-05-27 |
Adaptive Equalizer, Optical Receiver, And Adaptive Equalization Method
App 20210152403 - SASAKI; Daisuke ; et al. | 2021-05-20 |
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 |
Optical Transceiver And Method For Monitoring Variation In Polarization
App 20200313771 - Nakashima; Hisao | 2020-10-01 |
Signal processing device and signal processing method
Grant 10,708,035 - Oyama , et al. | 2020-07-07 |
Transmission device, reception device, and transmission method
Grant 10,698,228 - Oyama , et al. | 2020-06-30 |
Imbalance compensation device, transmission device, and imbalance compensation method
Grant 10,567,077 - Oyama , et al. Feb | 2020-02-18 |
Optical transmitter and skew compensation method
Grant 10,498,459 - Nomura , et al. De | 2019-12-03 |
Transmission Device, Reception Device, And Transmission Method
App 20190331931 - Oyama; Tomofumi ; et al. | 2019-10-31 |
Receiving device and phase-error compensation method
Grant 10,439,732 - Oyama , et al. O | 2019-10-08 |
Transmission system and method
Grant 10,419,263 - Ge , 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 |
Signal Processing Device And Signal Processing Method
App 20190215145 - Oyama; Tomofumi ; 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 |
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 |
Network controller and signal quality estimating method
Grant 10,256,903 - Oda , et al. | 2019-04-09 |
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 |
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 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 |
Polarization state detector, optical transmitter, and optical receiver
Grant 10,122,489 - Nakashima November 6, 2 | 2018-11-06 |
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 |
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 |
Optical transmitter and control method of optical transmitter
Grant 10,063,322 - Akiyama , et al. August 28, 2 | 2018-08-28 |
Error correction circuit and optical transmission system
Grant 10,057,012 - Ge , et al. August 21, 2 | 2018-08-21 |
Receiving Device And Receiving Method
App 20180227056 - Nakashima; Hisao ; et al. | 2018-08-09 |
Communication Device, Communication System And Communication Method For Transmitting Optical Signal
App 20180175933 - Nomura; Yoshitaka ; et al. | 2018-06-21 |
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 transmitter and method for controlling bias of optical modulator
Grant 9,853,739 - Nakashima , et al. December 26, 2 | 2017-12-26 |
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 transmission device, transmission system, and transmission method
Grant 9,787,396 - Sugitani , et al. October 10, 2 | 2017-10-10 |
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 |
Optical Transmitter And Control Method Of Optical Transmitter
App 20170163347 - AKIYAMA; YUICHI ; 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 |
Optical transmitter and waveform distortion correction method
Grant 9,654,216 - Nakashima , et al. May 16, 2 | 2017-05-16 |
Transmission Apparatus, Reception Apparatus And Modulation Method
App 20170134115 - NOMURA; Yoshitaka ; et al. | 2017-05-11 |
Estimating device and method for estimating
Grant 9,634,764 - Oyama , et al. April 25, 2 | 2017-04-25 |
Frequency error estimating apparatus and method, frequency error compensating apparatus, and optical receiver
Grant 9,559,785 - Nakashima January 31, 2 | 2017-01-31 |
Optical Transmission Device, Transmission System, And Transmission Method
App 20170026114 - SUGITANI; KIICHI ; et al. | 2017-01-26 |
Network Controller And Signal Quality Estimating Method
App 20160373187 - Oda; Shoichiro ; et al. | 2016-12-22 |
Optical communication receiving device and frequency offset compensation method
Grant 9,496,966 - Hatae , et al. November 15, 2 | 2016-11-15 |
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 |
Estimating Device And Method For Estimating
App 20160226582 - Oyama; Tomofumi ; et al. | 2016-08-04 |
Adaptive equalizer tap coefficient correction method and optical receiver
Grant 9,407,471 - Saito , et al. August 2, 2 | 2016-08-02 |
Optical receiving device
Grant 9,374,170 - Oota , et al. June 21, 2 | 2016-06-21 |
Non-linear distortion compensator, method of compensating non-linear distortion, and optical receiver
Grant 9,363,014 - Oyama , et al. June 7, 2 | 2016-06-07 |
Optical Transmitter And Waveform Distortion Correction Method
App 20160099776 - NAKASHIMA; Hisao ; et al. | 2016-04-07 |
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 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 |
Polarization State Detector, Optical Transmitter, And Optical Receiver
App 20150280856 - Nakashima; Hisao | 2015-10-01 |
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 transmission apparatus
Grant 9,094,121 - Oyama , et al. July 28, 2 | 2015-07-28 |
Optical Receiving Device
App 20150180586 - OOTA; Masato ; et al. | 2015-06-25 |
Signal processing circuit, optical receiver, detector and method for compensating for waveform distortion
Grant 9,048,957 - Nakashima June 2, 2 | 2015-06-02 |
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 Communication Receiving Device And Frequency Offset Compensation Method
App 20150098714 - HATAE; Kazuhiko ; et al. | 2015-04-09 |
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 |
Non-linear Distortion Compensator, Method Of Compensating Non-linear Distortion, And Optical Receiver
App 20150071630 - Oyama; Tomofumi ; et al. | 2015-03-12 |
Light receiving device and light receiving method
Grant 8,942,574 - Nakashima , et al. January 27, 2 | 2015-01-27 |
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 |
Optical Transmission System And Optical Transmission Method
App 20140341587 - NAKASHIMA; Hisao ; et al. | 2014-11-20 |
Digital coherent receiver and phase control method
Grant 8,873,973 - Komaki , et al. October 28, 2 | 2014-10-28 |
Light Receiving Device And Light Receiving Method
App 20140301743 - NAKASHIMA; Hisao ; et al. | 2014-10-09 |
Frequency Error Estimating Apparatus And Method, Frequency Error Compensating Apparatus, And Optical Receiver
App 20140270810 - Nakashima; Hisao | 2014-09-18 |
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 |
Adaptive Equalizer Tap Coefficient Correction Method And Optical Receiver
App 20140212132 - Saito; Taku ; et al. | 2014-07-31 |
Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same
Grant 8,762,086 - Tao , et al. June 24, 2 | 2014-06-24 |
Phase error estimator, coherent receiver and phase error estimating method
Grant 8,750,443 - Tao , et al. June 10, 2 | 2014-06-10 |
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 |
Driver circuit of optical modulator
Grant 8,705,981 - Takahara , et al. April 22, 2 | 2014-04-22 |
Optical Transmission System, Method Of Adjusting Optical Transmission Device, And Non-transitory Computer-readable Medium
App 20140099110 - Oyama; Tomofumi ; et al. | 2014-04-10 |
Adaptive equalizer, optical receiver, and tap coefficient correcting method
Grant 8,693,898 - Koizumi , 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 |
Light receiving device and light receiving method
Grant 8,649,685 - Nakashima , et al. February 11, 2 | 2014-02-11 |
Digital coherent receiving apparatus
Grant 8,649,689 - Koizumi , 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 coherent receiver, apparatus for and method of monitoring performance thereof
Grant 8,571,407 - Li , et al. October 29, 2 | 2013-10-29 |
Phase synchronization apparatus and digital coherent light receiver
Grant 8,553,825 - Sugitani , et al. October 8, 2 | 2013-10-08 |
Optical Transmission Apparatus
App 20130259480 - Oyama; Tomofumi ; et al. | 2013-10-03 |
Optical receiver and optical receiving method
Grant 8,532,503 - Nakashima , et al. September 10, 2 | 2013-09-10 |
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 |
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 compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system
Grant 8,447,190 - Tanimura , et al. May 21, 2 | 2013-05-21 |
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 |
Optical Transmission System, Optical Transmission Apparatus, Signal Conditioning Program, And Signal Conditioning Method
App 20130121691 - Oda; Shoichiro ; et al. | 2013-05-16 |
Optical communication system and optical receiver
Grant 8,406,635 - Nakashima , et al. March 26, 2 | 2013-03-26 |
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 |
Optical transmission system and optical transmission method
Grant 8,351,795 - Nakashima , et al. January 8, 2 | 2013-01-08 |
Repeater and repeating method
Grant 8,351,797 - Nakashima , et al. January 8, 2 | 2013-01-08 |
Optical transmission apparatus and method
Grant 8,331,793 - Takeuchi , et al. December 11, 2 | 2012-12-11 |
Digital coherent optical receiver
Grant 8,331,805 - Nakashima , et al. December 11, 2 | 2012-12-11 |
Digital Coherent Receiver And Phase Control Method
App 20120308227 - KOMAKI; Kosuke ; et al. | 2012-12-06 |
Delay processing apparatus, signal amplification apparatus, opto-electric conversion apparatus, analog-digital conversion apparatus, receiving apparatus, and receiving method
Grant 8,301,039 - Nishihara , et al. October 30, 2 | 2012-10-30 |
Optical receiver and method for optical reception
Grant 8,249,464 - Oda , et al. August 21, 2 | 2012-08-21 |
Sampling Clock Synchronizing Apparatus, Digital Coherent Receiving Apparatus, And Sampling Clock Synchronizing Method
App 20120195602 - NAKASHIMA; Hisao ; et al. | 2012-08-02 |
Optical Transmitter, Optical Transmission Method, And Wavelength-selective Variable Delayer
App 20120170928 - TANAKA; Toshiki ; et al. | 2012-07-05 |
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 |
Adaptive equalizer, optical receiver, and tap coefficient correcting method
App 20120134684 - Koizumi; Nobukazu ; et al. | 2012-05-31 |
Adaptive optimization method and apparatus for average length
Grant 8,189,718 - Li , et al. May 29, 2 | 2012-05-29 |
Polarization Multiplexing And Transmitting Apparatus
App 20120106962 - TANIMURA; Takahito ; et al. | 2012-05-03 |
Optical transmitter
Grant 8,145,069 - Tanaka , et al. March 27, 2 | 2012-03-27 |
Polarization multiplexing and transmitting apparatus
Grant 8,116,635 - Tanimura , et al. February 14, 2 | 2012-02-14 |
Frequency offset compensating apparatus and method, and optical coherent receiver
Grant 8,103,176 - Li , et al. January 24, 2 | 2012-01-24 |
Apparatus and method for frequency offset monitoring used in digital coherent optical receiver
Grant 8,103,177 - Zhang , et al. January 24, 2 | 2012-01-24 |
Optical receiver
Grant 8,086,113 - Nakashima , et al. December 27, 2 | 2011-12-27 |
Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver
Grant 8,078,066 - Li , et al. December 13, 2 | 2011-12-13 |
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 |
Light Receiving Device And Light Receiving Method
App 20110170881 - NAKASHIMA; Hisao ; et al. | 2011-07-14 |
Nonlinear Distortion Detecting Circuit, Optical Receiver, Optical Transmission System, And Method For Detecting Nonlinear Distortion
App 20110097075 - TANIMURA; Takahito ; et al. | 2011-04-28 |
Signal Processing Circuit, Optical Receiver, Detector And Method For Compensating For Waveform Distortion
App 20100329698 - NAKASHIMA; Hisao | 2010-12-30 |
Digital Coherent Receiving Apparatus
App 20100329697 - KOIZUMI; Nobukazu ; et al. | 2010-12-30 |
Optical Transmission Apparatus And Method
App 20100322630 - TAKEUCHI; Osamu ; et al. | 2010-12-23 |
Digital Coherent Optical Receiver
App 20100303474 - NAKASHIMA; Hisao ; et al. | 2010-12-02 |
Optical Receiver And Method For Optical Reception
App 20100254718 - ODA; Shoichiro ; et al. | 2010-10-07 |
Phase Synchronization Apparatus And Digital Coherent Light Receiver
App 20100239269 - SUGITANI; Kiichi ; et al. | 2010-09-23 |
Distortion Compensating Apparatus, Optical Receiving Apparatus, And Optical Transmitting And Receiving System
App 20100196017 - TANIMURA; Takahito ; et al. | 2010-08-05 |
Optical Communication System And Optical Receiver
App 20100189445 - NAKASHIMA; Hisao ; et al. | 2010-07-29 |
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 Receiver And Optical Receiving Method
App 20100098411 - NAKASHIMA; Hisao ; et al. | 2010-04-22 |
Optical Coherent Receiver, Apparatus For And Method Of Monitoring Performance Thereof
App 20100092168 - LI; Lei ; et al. | 2010-04-15 |
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 |
Adaptive Optimization Method And Apparatus For Average Length
App 20100002810 - LI; Lei ; et al. | 2010-01-07 |
Optical Receiving Apparatus And Digital Receiving Circuit
App 20090317092 - NAKASHIMA; Hisao ; et al. | 2009-12-24 |
Multi-level modulation receiving device
Grant 7,630,650 - Hoshida , et al. December 8, 2 | 2009-12-08 |
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 |
Apparatus and method for frequency offset monitoring used in digital coherent optical receiver
App 20090245815 - ZHANG; Huijian ; 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 |
Optical receiving apparatus and method
App 20090226187 - Tanimura; Takahito ; et al. | 2009-09-10 |
Monitor Circuit For Monitoring Property Of Optical Fiber Transmission Line And Quality Of Optical Signal
App 20090214201 - Oda; Shoichiro ; et al. | 2009-08-27 |
Frequency offset compensating apparatus and method, and optical coherent receiver
App 20090142076 - Li; Lei ; et al. | 2009-06-04 |
Phase error estimator, coherent receiver and phase error estimating method
App 20090141831 - Tao; Zhenning ; et al. | 2009-06-04 |
Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver
App 20090129787 - Li; Lei ; et al. | 2009-05-21 |
Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same
App 20090119043 - Tao; Zhenning ; et al. | 2009-05-07 |
Optical transmission system and optical transmission method
App 20090087194 - Nakashima; Hisao ; et al. | 2009-04-02 |
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 |
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 |
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 |
Wavelength dispersion compensation design method and a system thereof
Grant 7,382,979 - Akiyama , et al. June 3, 2 | 2008-06-03 |
Optical Transmitter
App 20080080872 - Tanaka; Toshiki ; et al. | 2008-04-03 |
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 |
Multi-level modulation receiving device
App 20080031633 - Hoshida; Takeshi ; et al. | 2008-02-07 |
Repeater and repeating method
App 20070201878 - Nakashima; Hisao ; et al. | 2007-08-30 |
Differential quadrature phase-shift modulator and method for setting driving voltage thereof
App 20070047969 - Nakashima; Hisao ; et al. | 2007-03-01 |
Wavelength dispersion compensation design method and a system thereof
App 20060193638 - Akiyama; Yuichi ; et al. | 2006-08-31 |
Optical apparatus with loss compensation capability and optical amplifier for loss compensation
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Network designing device and program
App 20060023641 - Nakashima; Hisao ; et al. | 2006-02-02 |
Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor
App 20050213979 - Nakashima, Hisao ; et al. | 2005-09-29 |
Optical apparatus with loss compensation capability and optical amplifier for loss compensation
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