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Optical amplification apparatus
Grant 9,019,593 - Yoshida , et al. April 28, 2 | 2015-04-28 |
Repeater, relay method and optical transmission system
Grant 8,965,219 - Sone , et al. February 24, 2 | 2015-02-24 |
Signal light monitoring apparatus, optical amplification apparatus and optical reception apparatus, and signal light monitoring method
Grant 8,705,168 - Yuki , et al. April 22, 2 | 2014-04-22 |
Terminal apparatus, data transmission system and data transmission method
Grant 8,571,058 - Sone , et al. October 29, 2 | 2013-10-29 |
Relay apparatus, signal processing apparatus and optical communication system
Grant 8,463,135 - Sone , et al. June 11, 2 | 2013-06-11 |
Repeater, Relay Method And Optical Transmission System
App 20130028599 - SONE; Kyosuke ; et al. | 2013-01-31 |
Optical transmission apparatus
Grant 8,320,772 - Ooi , et al. November 27, 2 | 2012-11-27 |
Optical Amplification Apparatus
App 20120257272 - YOSHIDA; Setsuo ; et al. | 2012-10-11 |
Signal Light Monitoring Apparatus, Optical Amplification Apparatus And Optical Reception Apparatus, And Signal Light Monitoring Method
App 20120230682 - YUKI; Masahiro ; et al. | 2012-09-13 |
Optical transmission system and method for chromatic dispersion compensation
Grant 8,265,485 - Nakamura , et al. September 11, 2 | 2012-09-11 |
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 |
Signal light monitoring apparatus, optical amplification apparatus and optical reception apparatus, and signal light monitoring method
Grant 8,203,781 - Yuki , et al. June 19, 2 | 2012-06-19 |
Polarization multiplexed optical transmitting and receiving apparatus
Grant 8,086,109 - Yuki , et al. December 27, 2 | 2011-12-27 |
Optical Transmission Apparatus
App 20110176816 - OOI; Hiroki ; et al. | 2011-07-21 |
Terminal Apparatus, Data Transmission System And Data Transmission Method
App 20110116803 - SONE; Kyosuke ; et al. | 2011-05-19 |
Chromatic dispersion compensating apparatus
Grant 7,936,993 - Ooi , et al. May 3, 2 | 2011-05-03 |
Optical transmission apparatus
Grant 7,925,171 - Ooi , et al. April 12, 2 | 2011-04-12 |
Dispersion compensation method and compensation node
Grant 7,885,545 - Ooi , et al. February 8, 2 | 2011-02-08 |
Interferometer for demodulating differential M-phase shift keying signal
Grant 7,860,408 - Isomura , et al. December 28, 2 | 2010-12-28 |
Signal regeneration device, optical receiver, and signal processing method
Grant 7,853,152 - Nishihara , et al. December 14, 2 | 2010-12-14 |
Relay Apparatus, Signal Processing Apparatus And Optical Communication System
App 20100266293 - Sone; Kyosuke ; et al. | 2010-10-21 |
Optical Transmission Apparatus, Wavelength Division Multiplexing Optical Communication System And Optical Transmission Method
App 20100221013 - OOI; Hiroki ; et al. | 2010-09-02 |
Chromatic dispersion compensating apparatus
Grant 7,751,706 - Ooi , et al. July 6, 2 | 2010-07-06 |
Chromatic dispersion compensating apparatus
App 20100135664 - Ooi; Hiroki ; et al. | 2010-06-03 |
Optical signal degradation compensator
Grant 7,616,900 - Isomura , et al. November 10, 2 | 2009-11-10 |
Wavelength division multiplexing optical repeating transmission method and repeating apparatus
Grant 7,616,893 - Ooi , et al. November 10, 2 | 2009-11-10 |
Polarization multiplexed optical transmitting and receiving apparatus
App 20090274469 - Yuki; Masahiro ; et al. | 2009-11-05 |
Wavelength division multiplexing optical transmission system and wavelength dispersion compensation unit
Grant 7,613,397 - Nakamura , et al. November 3, 2 | 2009-11-03 |
Polarization mode dispersion compensator and polarization mode dispersion compensating method
Grant 7,613,366 - Rasmussen , et al. November 3, 2 | 2009-11-03 |
Optical Transmission System And Method For Chromatic Dispersion Compensation
App 20090238571 - NAKAMURA; Kentaro ; et al. | 2009-09-24 |
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 |
Chromatic dispersion compensating apparatus
App 20090080894 - Ooi; Hiroki ; et al. | 2009-03-26 |
Wavelength division multiplexing transmission system
Grant 7,480,459 - Nakamura , et al. January 20, 2 | 2009-01-20 |
Chromatic dispersion compensating apparatus
Grant 7,466,920 - Ooi , et al. December 16, 2 | 2008-12-16 |
Signal Light Monitoring Apparatus, Optical Amplification Apparatus And Optical Reception Apparatus, And Signal Light Monitoring Method
App 20080266648 - Yuki; Masahiro ; et al. | 2008-10-30 |
Automatic dispersion compensation device and compensation method
Grant 7,433,599 - Takahara , et al. October 7, 2 | 2008-10-07 |
Chromatic dispersion compensation controlling system
Grant 7,389,049 - Takahara , et al. June 17, 2 | 2008-06-17 |
Optical receiving station, optical communication system, and dispersion controlling method
Grant 7,321,736 - Akiyama , et al. January 22, 2 | 2008-01-22 |
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 transmission apparatus
App 20070212079 - Ooi; Hiroki ; et al. | 2007-09-13 |
Interferometer for demodulating differential M-phase shift keying signal
App 20070177151 - Isomura; Akihiko ; et al. | 2007-08-02 |
Signal regeneration device, optical receiver, and signal processing method
App 20070127929 - Nishihara; Masato ; et al. | 2007-06-07 |
Polarization mode dispersion compensator and polarization mode dispersion compensating method
App 20070110451 - Rasmussen; Jens C. ; et al. | 2007-05-17 |
System for compensating for chromatic dispersion and polarization mode dispersion
Grant 7,218,856 - Takahara , et al. May 15, 2 | 2007-05-15 |
Optical receiving station, optical communication system, and dispersion controlling method
App 20060115278 - Akiyama; Yuichi ; et al. | 2006-06-01 |
Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method
Grant 7,035,548 - Ooi , et al. April 25, 2 | 2006-04-25 |
Polarization mode dispersion compensator based on degree of polarization
Grant 7,030,973 - Rasmussen , et al. April 18, 2 | 2006-04-18 |
Optical receiving station, optical communication system, and dispersion controlling method
Grant 7,006,770 - Akiyama , et al. February 28, 2 | 2006-02-28 |
Dispersion compensation method and compensation node apparatus
App 20050226629 - Ooi, Hiroki ; et al. | 2005-10-13 |
Wavelength division multiplexing optical transmission system and wavelength dispersion compensation unit
App 20050213987 - Nakamura, Kentaro ; et al. | 2005-09-29 |
Optical signal degradation compensator
App 20050201758 - Isomura, Akihiko ; et al. | 2005-09-15 |
Dispersion compensation apparatus including a fixed dispersion compensator for coarse compensation and a variable dispersion compensator for fine compensation
App 20050185964 - Ishikawa, George | 2005-08-25 |
Optical amplifier which compensates for dispersion of a WDM optical signal
Grant 6,930,824 - Ishikawa , et al. August 16, 2 | 2005-08-16 |
Method and system for compensating chromatic dispersion
Grant 6,925,262 - Ooi , et al. August 2, 2 | 2005-08-02 |
Dispersion compensation apparatus including a fixed dispersion compensator for coarse compensation and a variable dispersion compensator for fine compensation
Grant 6,909,851 - Ishikawa June 21, 2 | 2005-06-21 |
System for compensating for chromatic dispersion and polarization mode dispersion
App 20050078964 - Takahara, Tomoo ; et al. | 2005-04-14 |
Adaptively controllable polarization mode dispersion compensator
Grant 6,865,305 - Rasmussen , et al. March 8, 2 | 2005-03-08 |
Wavelength division multiplexing transmission system
App 20050041975 - Nakamura, Kentaro ; et al. | 2005-02-24 |
Method and apparatus for compensation of polarization-mode dispersion
Grant 6,829,440 - Ooi , et al. December 7, 2 | 2004-12-07 |
Chromatic dispersion compensation controlling system
App 20040213578 - Takahara, Tomoo ; et al. | 2004-10-28 |
Control apparatus and control method for an optical method
Grant 6,809,849 - Akiyama , et al. October 26, 2 | 2004-10-26 |
Wavelength division multiplexing optical repeating transmission method and repeating apparatus
App 20040184814 - Ooi, Hiroki ; et al. | 2004-09-23 |
Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method
App 20040161243 - Ooi, Hiroki ; et al. | 2004-08-19 |
Adaptively controllable polarization mode dispersion compensator
App 20040131298 - Rasmussen, Jens C. ; et al. | 2004-07-08 |
Polarization mode dispersion compensator based on degree of polarization
App 20040124344 - Rasmussen, Jens C. ; et al. | 2004-07-01 |
Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method
Grant 6,728,491 - Ooi , et al. April 27, 2 | 2004-04-27 |
Optical transmitter and optical transmission system
Grant 6,661,974 - Akiyama , et al. December 9, 2 | 2003-12-09 |
Automatic dispersion compensation device and compensation method
App 20030223760 - Takahara, Tomoo ; et al. | 2003-12-04 |
Control apparatus and control method for an optical modulator
App 20030184838 - Akiyama, Yuichi ; et al. | 2003-10-02 |
Chromatic dispersion compensating apparatus
App 20030185568 - Ooi, Hiroki ; et al. | 2003-10-02 |
Apparatus and method for optical modulation and demodulation
Grant 6,606,424 - Ooi , et al. August 12, 2 | 2003-08-12 |
Wavelength dispersion measuring device and a method thereof
Grant 6,573,985 - Ibukuro , et al. June 3, 2 | 2003-06-03 |
Apparatus And Method For Optical Modulation And Demodulation
App 20030091259 - Ooi, Hiroki ; et al. | 2003-05-15 |
Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level
Grant 6,501,580 - Ishikawa , et al. December 31, 2 | 2002-12-31 |
Method and apparatus for minimizing the intensity of a specific frequency component of an optical signal travelling through an optical fiber transmission line to thereby minimize the total dispersion
Grant 6,411,416 - Ooi , et al. June 25, 2 | 2002-06-25 |
Optical modulation apparatus and method of controlling optical modulator
Grant 6,362,913 - Ooi , et al. March 26, 2 | 2002-03-26 |
Wavelength dispersion measuring device and a method thereof
App 20020018213 - Ibukuro, Sadao ; et al. | 2002-02-14 |
Method and apparatus for compensation of polarization-mode dispersion
App 20020018266 - Ooi, Hiroki ; et al. | 2002-02-14 |
Method and system for compensating chromatic dispersion
App 20020015207 - Ooi, Hiroki ; et al. | 2002-02-07 |
Dispersion compensation apparatus including a fixed dispersion compensator for coarse compensation and a variable dispersion compensator for fine compensation
App 20020003646 - Ishikawa, George | 2002-01-10 |
Optical receiving station, optical communication system, and dispersion controlling method
App 20010046077 - Akiyama, Yuichi ; et al. | 2001-11-29 |
Dispersion compensation apparatus including a fixed dispersion compensator for coarse compensation and a variable dispersion compensator for fine compensation
Grant 6,320,687 - Ishikawa November 20, 2 | 2001-11-20 |
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 modulation apparatus and method of controlling optical modulator
App 20010007508 - Ooi, Hiroki ; et al. | 2001-07-12 |
Optical time division demultiplexing apparatus and demultiplexed signal switching method as well as optical time division multiplex transmission system
Grant 6,118,564 - Ooi , et al. September 12, 2 | 2000-09-12 |
Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level
Grant 6,081,360 - Ishikawa , et al. June 27, 2 | 2000-06-27 |
Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
Grant 5,991,477 - Ishikawa , et al. November 23, 1 | 1999-11-23 |
Optical modulating device and optical modulating method
Grant 5,926,297 - Ishikawa , et al. July 20, 1 | 1999-07-20 |
Method of and device for driving optical modulator, and optical communications system
Grant 5,917,637 - Ishikawa , et al. June 29, 1 | 1999-06-29 |
Drift compensating circuit for optical modulators in an optical system
Grant 5,909,297 - Ishikawa , et al. June 1, 1 | 1999-06-01 |
Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
Grant 5,896,217 - Ishikawa , et al. April 20, 1 | 1999-04-20 |
Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
Grant 5,870,213 - Ishikawa , et al. February 9, 1 | 1999-02-09 |
Optical transmission system with transmission characteristic measuring device
Grant 5,815,294 - Ishikawa , et al. September 29, 1 | 1998-09-29 |
Control unit for optical modulators producing multiplexed optical output signal
Grant 5,805,321 - Ooi , et al. September 8, 1 | 1998-09-08 |
Optical demultiplexer
Grant 5,760,937 - Ishikawa , et al. June 2, 1 | 1998-06-02 |
Optical transmission system, optical multiplexing transmission system, and related peripheral techniques
Grant 5,754,322 - Ishikawa , et al. May 19, 1 | 1998-05-19 |
Optimized optical transmission system for high capacity transmission
Grant 5,717,510 - Ishikawa , et al. February 10, 1 | 1998-02-10 |
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 |
Demodulator and a polarization diversity receiver for coherent optical communication provided with the demodulator
Grant 5,253,097 - Naito , et al. October 12, 1 | 1993-10-12 |
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