Patent | Date |
---|
Optical communication device, wavelength number measurement device, optical repeater, and wavelength number measurement method Grant 8,891,961 - Maeda , et al. November 18, 2 | 2014-11-18 |
Optical transmission apparatus and optical transmission system Grant 8,873,972 - Miyashita , et al. October 28, 2 | 2014-10-28 |
Optical transmission device and optical switch device Grant 8,805,194 - Toyomaki August 12, 2 | 2014-08-12 |
Optical transmission system and optical transmission method Grant 8,699,884 - Toyomaki , et al. April 15, 2 | 2014-04-15 |
Optical apparatus using polarized orthogonal control Grant 8,670,665 - Toyomaki , et al. March 11, 2 | 2014-03-11 |
Optical Communication Device, Wavelength Number Measurement Device, Optical Repeater, And Wavelength Number Measurement Method App 20130156422 - MAEDA; Taizo ;   et al. | 2013-06-20 |
Optical Transmission Device And Optical Switch Device App 20120263463 - TOYOMAKI; Takashi | 2012-10-18 |
Optical Transmission Apparatus And Optical Transmission System App 20120201534 - MIYASHITA; Takuya ;   et al. | 2012-08-09 |
Chromatic dispersion compensation designing method in optical network and a system thereof Grant 8,121,481 - Katagiri , et al. February 21, 2 | 2012-02-21 |
Optical transmission system and optical transmission method App 20120008957 - Toyomaki; Takashi ;   et al. | 2012-01-12 |
Network design and determination of the arrangement of optical transmission devices in respective network stations Grant 8,078,701 - Hashiguchi , et al. December 13, 2 | 2011-12-13 |
Detecting abnormality in an optical receiver Grant 7,991,301 - Mizuguchi , et al. August 2, 2 | 2011-08-02 |
Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method Grant 7,831,118 - Oikawa , et al. November 9, 2 | 2010-11-09 |
Phase control apparatus and optical DQPSK receiver Grant 7,684,713 - Terayama , et al. March 23, 2 | 2010-03-23 |
Chromatic Dispersion Compensation Designing Method In Optical Network And A System Thereof App 20090220241 - KATAGIRI; Toru ;   et al. | 2009-09-03 |
Network Design Apparatus, Network Design Method, And Computer Product App 20090185805 - Hashiguchi; Tomohiro ;   et al. | 2009-07-23 |
Detecting Abnormality In An Optical Receiver App 20080253761 - MIZUGUCHI; Noriaki ;   et al. | 2008-10-16 |
Optical Apparatus Using Polarized Orthogonal Control App 20080166128 - TOYOMAKI; Takashi ;   et al. | 2008-07-10 |
Phase control apparatus and optical DQPSK receiver App 20070292140 - Terayama; Yoshikazu ;   et al. | 2007-12-20 |
Communication system Grant 7,039,325 - Sekiya , et al. May 2, 2 | 2006-05-02 |
Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method App 20050220397 - Oikawa, Yoichi ;   et al. | 2005-10-06 |
Communication system App 20020126336 - Sekiya, Motoyoshi ;   et al. | 2002-09-12 |