| Patent | Date |
|---|
Optical Communication Network System, Parent Station Optical Communication Device, And Child Station Optical Communication Device
App 20090263133 - Nakagawa; Junichi ; et al. | 2009-10-22 |
Method for dynamically establishing logical link in PON systems and an optical network unit for the method
Grant 7,558,482 - Tanaka , et al. July 7, 2 | 2009-07-07 |
Method to provide caller's location in IP phone system, optical transmission system, optical connector, and optical network unit
Grant 7,551,854 - Horiuchi , et al. June 23, 2 | 2009-06-23 |
Method to Provide Caller's Location in IP Phone System, Optical Transmission System, Optical Connector, and Optical Network Unit
App 20080279555 - Horiuchi; Yukio ; et al. | 2008-11-13 |
Method for dynamically establishing logical link in PON systems and an optical network unit for the method
App 20060083245 - Tanaka; Keiji ; et al. | 2006-04-20 |
Method to provide caller's location in IP phone system, optical transmission system, optical connector, and optical network unit
App 20050286893 - Horiuchi, Yukio ; et al. | 2005-12-29 |
Control method of xDSL modem and xDSL modem
App 20050185705 - Tanaka, Keiji ; et al. | 2005-08-25 |
Optical amplifier having various control circuitry
Grant 6,867,908 - Uemura , et al. March 15, 2 | 2005-03-15 |
Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converter
Grant 6,775,478 - Suzuki , et al. August 10, 2 | 2004-08-10 |
Optical transmission system, optical transmission line and optical transmitter
Grant 6,768,872 - Tsuritani , et al. July 27, 2 | 2004-07-27 |
Optical fiber transmission line
Grant 6,754,420 - Tsuritani , et al. June 22, 2 | 2004-06-22 |
Optical transmission line
Grant 6,748,178 - Miyakawa , et al. June 8, 2 | 2004-06-08 |
Optical transmission system, its method, and optical amplification transmission line
Grant 6,744,989 - Tsuritani , et al. June 1, 2 | 2004-06-01 |
WDM optical transmission system and an optical transmission line thereof
Grant 6,744,990 - Suzuki , et al. June 1, 2 | 2004-06-01 |
Pumping light generator and fiber Raman amplifier
Grant 6,728,437 - Edagawa , et al. April 27, 2 | 2004-04-27 |
Optical transmission system and optical transmitter and methods thereof
App 20040052532 - Morita, Itsuro ; et al. | 2004-03-18 |
Method and system for monitoring distributed raman optical transmission line
App 20040032642 - Imai, Kaoru ; et al. | 2004-02-19 |
Optical amplifier having various control circuitry
App 20030184850 - Uemura, Aritomo ; et al. | 2003-10-02 |
Optical amplifier having various control circuitry
Grant 6,614,588 - Uemura , et al. September 2, 2 | 2003-09-02 |
Dispersion compensating optical transmission line and system
Grant 6,594,428 - Tanaka , et al. July 15, 2 | 2003-07-15 |
Optical digital regenerator
Grant 6,532,091 - Miyazaki , et al. March 11, 2 | 2003-03-11 |
Optical amplifying transmission system and optical amplifier
Grant 6,504,638 - Tanaka , et al. January 7, 2 | 2003-01-07 |
Dispersion compensating optical transmission line and optical transmission system
App 20020131711 - Tanaka, Keiji ; et al. | 2002-09-19 |
Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converter
App 20020126346 - Suzuki, Masatoshi ; et al. | 2002-09-12 |
Optical fiber transmission line
App 20020118936 - Tsuritani, Takehiro ; et al. | 2002-08-29 |
Optical transmitter
App 20020063920 - Morita, Itsuro ; et al. | 2002-05-30 |
Optical transmission system, its method, and optical amplification transmission line
App 20020003647 - Tsuritani, Takehiro ; et al. | 2002-01-10 |
Raman amplifier
App 20020001123 - Miyakawa, Takayuki ; et al. | 2002-01-03 |
Pumping light generator and fiber raman amplifier
App 20010053264 - Edagawa, Noboru ; et al. | 2001-12-20 |
Optical transmission line
App 20010021291 - Miyakawa, Takayuki ; et al. | 2001-09-13 |
Multi-wavelength light source and discrete-wavelength-variable light source
Grant 6,285,477 - Miyazaki , et al. September 4, 2 | 2001-09-04 |
Multi-wavelength Light Source And Discrete-wavelength-variable Light Source
App 20010012144 - MIYAZAKI, TETSUYA ; et al. | 2001-08-09 |
Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods
App 20010009469 - Shimizu, Katsuhiro ; et al. | 2001-07-26 |
Optical waveform shaper
App 20010005276 - Edagawa, Noboru ; et al. | 2001-06-28 |
Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods
Grant 6,236,488 - Shimizu , et al. May 22, 2 | 2001-05-22 |
Multi-wavelength light source and discrete-wavelength-variable light source
Grant 6,215,566 - Miyazaki , et al. April 10, 2 | 2001-04-10 |
Optical amplifying transmission system and optical amplifying repeater
Grant 6,188,510 - Edagawa , et al. February 13, 2 | 2001-02-13 |
Optical amplifying transmission system and optical amplifier
Grant 6,115,173 - Tanaka , et al. September 5, 2 | 2000-09-05 |
Gain equalizing apparatus
Grant 6,091,538 - Takeda , et al. July 18, 2 | 2000-07-18 |
Optical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulses
Grant 6,005,702 - Suzuki , et al. December 21, 1 | 1999-12-21 |
Wavelength converter, optically operational device and optical pulse phase detecting circuit
Grant 5,959,764 - Edagawa , et al. September 28, 1 | 1999-09-28 |
Optical receiver device for dark soliton lightwave
Grant 5,892,608 - Suzuki , et al. April 6, 1 | 1999-04-06 |
Optical modulator, optical short pulse generating device, optical waveform shaping device, and optical demultiplexer device
Grant 5,889,607 - Suzuki , et al. March 30, 1 | 1999-03-30 |
Optical frequency shifter and optical soliton-like return-to-zero pulse transmission system using optical frequency shifter
Grant 5,864,421 - Suzuki , et al. January 26, 1 | 1999-01-26 |
Optical submarine branching device
Grant 5,838,477 - Yamamoto , et al. November 17, 1 | 1998-11-17 |
Optical communication system and optical transmitting device
Grant 5,786,918 - Suzuki , et al. July 28, 1 | 1998-07-28 |
Gain-controllable optical amplifier and optical gain-control method
Grant 5,710,660 - Yamamoto , et al. January 20, 1 | 1998-01-20 |
Soliton optical communication system and optical transmitter and optical receiver therefor
Grant 5,625,479 - Suzuki , et al. April 29, 1 | 1997-04-29 |
Wavelength division multiplexed optical fiber transmission equipment
Grant 5,589,969 - Taga , et al. December 31, 1 | 1996-12-31 |
Optical amplifying transmitting system
Grant 5,574,590 - Edagawa , et al. November 12, 1 | 1996-11-12 |
Wavelength division multiplexed optical fiber transmission equiptment
Grant 5,559,910 - Taga , et al. September 24, 1 | 1996-09-24 |
Optical communication system
Grant 5,471,333 - Taga , et al. November 28, 1 | 1995-11-28 |
Optical waveform shaping device for peforming waveform equalization and timing synchronization
Grant 5,401,957 - Suzuki , et al. March 28, 1 | 1995-03-28 |
Optical amplifier with erbium-doped fiber
Grant 5,260,816 - Edagawa , et al. November 9, 1 | 1993-11-09 |
Method for preparing a fused silica glass body co-doped with a rare earth element and aluminum
Grant 5,246,475 - Edagawa , et al. September 21, 1 | 1993-09-21 |
Er-doped optical fiber laser device
Grant 5,042,039 - Edagawa , et al. August 20, 1 | 1991-08-20 |
Multi-point optical amplification repeating system
Grant 4,972,513 - Mochizuki , et al. November 20, 1 | 1990-11-20 |
Optical amplification
Grant 4,923,291 - Edagawa , et al. May 8, 1 | 1990-05-08 |
Fault monitoring system for optical fiber communication systems
Grant 4,899,043 - Mochizuki , et al. February 6, 1 | 1990-02-06 |
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