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Optical communication apparatus and optical add/drop apparatus
Grant 8,521,039 - Miyata , et al. August 27, 2 | 2013-08-27 |
Battery assembly
Grant 8,293,397 - Uchida , et al. October 23, 2 | 2012-10-23 |
Optical transmission apparatus, wavelength division multiplexing optical communication system and optical transmission method
Grant 8,213,798 - Ooi , et al. July 3, 2 | 2012-07-03 |
Optical Communication Apparatus And Optical Add/drop Apparatus
App 20110211830 - MIYATA; Hideyuki ; et al. | 2011-09-01 |
Optical communication apparatus and optical add/drop apparatus
Grant 7,953,329 - Miyata , et al. May 31, 2 | 2011-05-31 |
Dispersion compensating apparatus and dispersion compensation control method
Grant 7,869,715 - Ooi , et al. January 11, 2 | 2011-01-11 |
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 |
Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system
Grant 7,822,204 - Yoshida , et al. October 26, 2 | 2010-10-26 |
Optical Transmission Apparatus, Wavelength Division Multiplexing Optical Communication System And Optical Transmission Method
App 20100221013 - OOI; Hiroki ; et al. | 2010-09-02 |
Chromatic dispersion monitoring method and chromatic dispersion monitoring apparatus, and optical transmission system
Grant 7,769,299 - Ooi , et al. August 3, 2 | 2010-08-03 |
Optical amplifier and optical monitor circuit
Grant 7,688,498 - Onaka , et al. March 30, 2 | 2010-03-30 |
Optical waveform shaper
Grant 7,631,378 - Hironishi , et al. December 15, 2 | 2009-12-15 |
Optical Communication Apparatus And Optical Add/drop Apparatus
App 20090297168 - Miyata; Hideyuki ; et al. | 2009-12-03 |
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 |
Optical communication apparatus and optical add/drop apparatus
Grant 7,577,368 - Miyata , et al. August 18, 2 | 2009-08-18 |
Method and System for Transmitting Information in an Optical Communication System Using Distributed Amplification
App 20090136229 - Hoshida; Takeshi ; et al. | 2009-05-28 |
Battery assembly
App 20090061299 - Uchida; Yasunori ; et al. | 2009-03-05 |
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 |
Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, and communication system
Grant 7,471,790 - Yoshida , et al. December 30, 2 | 2008-12-30 |
Piston and process for manufacturing the same
App 20080250923 - Mitsui; Kenichi ; et al. | 2008-10-16 |
Optical node device and system including the device
Grant 7,433,600 - Katagiri , et al. October 7, 2 | 2008-10-07 |
Optical transmission device
Grant 7,406,262 - Nakagawa , et al. July 29, 2 | 2008-07-29 |
Optical communication apparatus and optical add/drop apparatus
Grant 7,389,054 - Miyata , et al. June 17, 2 | 2008-06-17 |
Optical Communication Apparatus And Optical Add/drop Apparatus
App 20080095543 - Miyata; Hideyuki ; et al. | 2008-04-24 |
Control method and control apparatus of optical device
Grant 7,362,925 - Miyata , et al. April 22, 2 | 2008-04-22 |
Dispersion compensating apparatus and dispersion compensation control method
App 20080056710 - Ooi; Hiroki ; et al. | 2008-03-06 |
Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system
App 20080044011 - Yoshida; Setsuo ; et al. | 2008-02-21 |
Selected-wavelength tuning filter and optical add/drop multiplexer
Grant 7,292,787 - Kai , et al. November 6, 2 | 2007-11-06 |
Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, and communication system
App 20070183593 - Yoshida; Setsuo ; et al. | 2007-08-09 |
Chromatic dispersion monitoring method and chromatic dispersion monitoring apparatus, and optical transmission system
App 20070177876 - Ooi; Hiroki ; et al. | 2007-08-02 |
Interferometer for demodulating differential M-phase shift keying signal
App 20070177151 - Isomura; Akihiko ; et al. | 2007-08-02 |
Optical communication apparatus, system, and method that properly compensate for chromatic dispersion
Grant 7,200,333 - Katagiri , et al. April 3, 2 | 2007-04-03 |
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 |
Optical receiver and optical receiving method corresponding to differential M-phase shift keying system
App 20060280510 - Onaka; Hiroshi ; et al. | 2006-12-14 |
Light branching/inserting apparatus and light branching apparatus using wavelength selection filter
Grant 7,142,785 - Otsuka , et al. November 28, 2 | 2006-11-28 |
Optical multiplexing method and optical multiplexer, and optical amplifier using same
Grant 7,127,139 - Onaka , et al. October 24, 2 | 2006-10-24 |
Acousto-optical tunable filters cascaded together
Grant 7,116,907 - Nakazawa , et al. October 3, 2 | 2006-10-03 |
Wavelength division multiplexing optical communication system
Grant 7,088,922 - Tomofuji , et al. August 8, 2 | 2006-08-08 |
Method and system for demultiplexing non-intensity modulated wavelength division multiplexed (WDM) signals
Grant 7,035,543 - Hoshida , et al. April 25, 2 | 2006-04-25 |
Optical transmission apparatus and method which adjust rise and fall time of signal light to be transmitted
Grant 7,020,399 - Miyata , et al. March 28, 2 | 2006-03-28 |
Optical communication apparatus and optical add/drop apparatus
Grant 7,006,771 - Miyata , et al. February 28, 2 | 2006-02-28 |
Optical amplifier and optical monitor circuit
App 20060024063 - Onaka; Miki ; et al. | 2006-02-02 |
Variable optical filter and optical transmission system using same, and method of controlling variable optical filter
Grant 6,978,064 - Yoshida , et al. December 20, 2 | 2005-12-20 |
Control method and control apparatus of optical device
App 20050226550 - Miyata, Hideyuki ; et al. | 2005-10-13 |
Optical waveform shaper
App 20050220388 - Hironishi, Kazuo ; et al. | 2005-10-06 |
Method and system for communicating a clock signal over an optical link
App 20050207760 - Onaka, Hiroshi | 2005-09-22 |
Method and system for communicating a clock signal over an optical link
Grant 6,941,078 - Onaka September 6, 2 | 2005-09-06 |
Optical multiplexing method and optical multiplexer, and optical amplifier using same
App 20050185885 - Onaka, Miki ; et al. | 2005-08-25 |
Control method and control apparatus of optical device
Grant 6,934,433 - Miyata , et al. August 23, 2 | 2005-08-23 |
Optical amplifier which compensates for dispersion of a WDM optical signal
Grant 6,930,824 - Ishikawa , et al. August 16, 2 | 2005-08-16 |
Optical transmission device
App 20050169633 - Nakagawa, Goji ; et al. | 2005-08-04 |
Wavelength-selectable laser capable of high-speed frequency control
Grant 6,847,662 - Bouda , et al. January 25, 2 | 2005-01-25 |
Optical transmission apparatus and an optical wavelength multiplex network therewith
App 20040184809 - Miyata, Hideyuki ; et al. | 2004-09-23 |
Wavelength locker and wavelength discriminating apparatus
Grant 6,782,017 - Kai , et al. August 24, 2 | 2004-08-24 |
Mach-zehnder interferometer type optical filter and control method thereof
App 20040160665 - Nakamoto, Ken-ichi ; et al. | 2004-08-19 |
Variable optical filter and optical transmission system using same, and method of controlling variable optical filter
App 20040135172 - Yoshida, Setsuo ; et al. | 2004-07-15 |
Variable wavelength light source apparatus and optical amplifier using same
Grant 6,741,390 - Onaka , et al. May 25, 2 | 2004-05-25 |
Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal
Grant 6,717,713 - Onaka , et al. April 6, 2 | 2004-04-06 |
Optical communication apparatus, system, and method that properly compensate for chromatic dispersion
App 20040001715 - Katagiri, Toru ; et al. | 2004-01-01 |
Optical ring network system having a plurality of node apparatuses connected in a ring
App 20030228148 - Miyata, Hideyuki ; et al. | 2003-12-11 |
Method and apparatus for measuring optical signal-to-noise ratio, and pre-emphasis method and optical communication system each utilizing the method
Grant 6,654,561 - Terahara , et al. November 25, 2 | 2003-11-25 |
Wavelength division multiplexing optical communication system
App 20030215233 - Tomofuji, Hiroaki ; et al. | 2003-11-20 |
Optical communication apparatus and optical add/drop apparatus
App 20030210915 - Miyata, Hideyuki ; et al. | 2003-11-13 |
Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal
App 20030210451 - Onaka, Hiroshi ; et al. | 2003-11-13 |
Variable wavelength light source apparatus and optical amplifier using same
App 20030206336 - Onaka, Miki ; et al. | 2003-11-06 |
Wavelength-selectable laser capable of high-speed frequency control
App 20030179790 - Bouda, Martin ; et al. | 2003-09-25 |
Light branching/inserting apparatus and light branching apparatus using wavelength selection filter
App 20030138254 - Otsuka, Kazue ; et al. | 2003-07-24 |
Control method and control apparatus of optical device
App 20030123782 - Miyata, Hideyuki ; et al. | 2003-07-03 |
Optical transmission apparatus, optical transmission system, and optical terminal station
Grant 6,583,900 - Onaka , et al. June 24, 2 | 2003-06-24 |
Variable optical attenuator which applies a magnetic field to a Faraday element to rotate the polarization of a light signal
Grant 6,570,699 - Onaka , et al. May 27, 2 | 2003-05-27 |
Optical transmission apparatus, optical transmission system, and optical terminal station
App 20020101633 - Onaka, Hiroshi ; et al. | 2002-08-01 |
Optical node device and system including the device
App 20020093707 - Katagiri, Toru ; et al. | 2002-07-18 |
Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit
App 20020030869 - Okazaki, Kazue ; et al. | 2002-03-14 |
Optical transmission apparatus, optical transmission system, and optical terminal station
Grant 6,351,323 - Onaka , et al. February 26, 2 | 2002-02-26 |
Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal
App 20020021484 - Onaka, Hiroshi ; et al. | 2002-02-21 |
Optical amplifier for amplifying light in a long wavelength band
App 20020008900 - Sugaya, Yasushi ; et al. | 2002-01-24 |
Optical wavelength multiplex transmission method and optical dispersion compensation method
App 20010028489 - Ishikawa, George ; et al. | 2001-10-11 |
Optical wavelength multiplex transmission method and optical dispersion compensation method
App 20010022676 - Ishikawa, George ; et al. | 2001-09-20 |
Optical fiber amplifier using optical fiber having a portion which suppresses nonlinear optical phenomena
Grant 6,266,180 - Inagaki , et al. July 24, 2 | 2001-07-24 |
Method and device for optical amplification and system having the device
Grant 6,151,158 - Takeda , et al. November 21, 2 | 2000-11-21 |
Optical communication system which determines the spectrum of a wavelength division multiplexed signal and performs various processes in accordance with the determined spectrum
Grant 5,894,362 - Onaka , et al. April 13, 1 | 1999-04-13 |
Optical transmission system employing single mode optical transmission fiber
Grant 5,886,804 - Onaka , et al. March 23, 1 | 1999-03-23 |
Method and apparatus for scrambling the polarization of signal lights forming a wavelength division multiplexed signal light
Grant 5,841,557 - Otsuka , et al. November 24, 1 | 1998-11-24 |
Optical amplifying apparatus
Grant 5,737,118 - Sugaya , et al. April 7, 1 | 1998-04-07 |
Optical-filter array, optical transmitter and optical transmission system
Grant 5,696,859 - Onaka , et al. December 9, 1 | 1997-12-09 |
Tunable optical filter having beam splitter and movable film filter
Grant 5,646,399 - Fukushima , et al. July 8, 1 | 1997-07-08 |
Optical dispersion compensation method using transmissible band determined from synergetic effect of self phase modulation and group velocity dispersion
Grant 5,636,046 - Ishikawa , et al. June 3, 1 | 1997-06-03 |
Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system
Grant 5,612,807 - Ishikawa , et al. March 18, 1 | 1997-03-18 |
Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system
Grant 5,602,666 - Ishikawa , et al. February 11, 1 | 1997-02-11 |
Dispersion compensator and optical amplifier
Grant 5,596,448 - Onaka , et al. January 21, 1 | 1997-01-21 |
Heterodyne receiver provided with a frequency discriminator for coherent lightwave communications
Grant 5,568,305 - Naito , et al. October 22, 1 | 1996-10-22 |
Cold start control system and method for use in coherent lightwave communications system
Grant 5,471,336 - Onaka , et al. November 28, 1 | 1995-11-28 |
Optical filter, method of controlling transmission wavelength thereof, and optical receiver using the method
Grant 5,469,288 - Onaka , et al. November 21, 1 | 1995-11-21 |
Optical frequency deviation measure and control device for laser light
Grant 5,200,967 - Miyata , et al. April 6, 1 | 1993-04-06 |
Direct modulation phase-shift-keying system and method
Grant 5,050,176 - Naito , et al. September 17, 1 | 1991-09-17 |
Polarization diversity optical receiver for coherent optical communication
Grant 4,965,858 - Naito , et al. October 23, 1 | 1990-10-23 |
Process for producing zirconium sols and gels, and process for producing zirconia using the same
Grant 4,731,234 - Wada , et al. March 15, 1 | 1988-03-15 |
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