Issued Patents All Time
Showing 51–75 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8965198 | System and method for shared mesh restoration in optical networks | Qiong Zhang, Paparao Palacharla, Xi Wang | 2015-02-24 |
| 8942114 | System and method for calculating utilization entropy | Xi Wang, Inwoong Kim, Qiong Zhang, Paparao Palacharla | 2015-01-27 |
| 8938163 | Method and system for hybrid multi-layer mesh restoration in a communication network | Qiong Zhang, Xi Wang, Paparao Palacharia | 2015-01-20 |
| 8909063 | Optical QPSK signal regeneration and amplification | Jeng-Yuan Yang, Youichi Akasaka, Inwoong Kim | 2014-12-09 |
| 8909062 | Optical signal regeneration and amplification of M-PSK and M-QAM modulation formats using reconfigurable wavelength selective processors and phase-sensitive amplifiers | Jeng-Yuan Yang, Youichi Akasaka, Inwoong Kim | 2014-12-09 |
| 8909049 | Method and system for calculating spectrum granularity in flexible grid optical networks | Xi Wang, Qiong Zhang, Inwoong Kim, Paparao Palacharla | 2014-12-09 |
| 8848176 | Dispersion measurement apparatus using a wavelet transform to determine a time difference based on indentified peaks | Yusaku Yamamoto | 2014-09-30 |
| 8761600 | In-band supervisory data modulation | Inwoong Kim, Olga Vassilieva, Paparao Palacharla | 2014-06-24 |
| 8718997 | Network design method and network design device | Yasuko Nozu | 2014-05-06 |
| 8699884 | Optical transmission system and optical transmission method | Takashi Toyomaki | 2014-04-15 |
| 8644704 | Method and system for an adaptive channel grid of an optical network | Olga Vassilieva, Martin Bouda | 2014-02-04 |
| 8611446 | Communication system using initial likelihood information for performing maximum likelihood sequence estimation (MLSE) | Taizo Maeda, Takuya Miyashita, Rikiya Watanabe | 2013-12-17 |
| 8559829 | Flexible multi-band multi-traffic optical OFDM network | Inwoong Kim, Paparao Palacharla, Xi Wang | 2013-10-15 |
| 8346965 | Systems and methods for multi-layer traffic grooming | Qiong Zhang, Paparao Palacharla, Qingya She, Xi Wang | 2013-01-01 |
| 8121481 | Chromatic dispersion compensation designing method in optical network and a system thereof | Toru Katagiri, Tomohiro Hashiguchi, Yutaka Takita, Kazuyuki Tajima, Takashi Toyomaki | 2012-02-21 |
| 7742702 | Chirp switching circuit and optical transmission system | — | 2010-06-22 |
| 7689131 | WDM system | Kimio Uekama, Takehiro Fujita | 2010-03-30 |
| 7542677 | Dispersion compensation method in optical communication system having optical add drop multiplexing capability | Kazuo Yamane, Ryosuke Goto, Satoru Okano, Takehito Okeno | 2009-06-02 |
| 7489876 | Optical transmission system having noise-elimination function | Takehiro Fujita, Hidezumi Natori | 2009-02-10 |
| 7474854 | Optical transmission system | Ryosuke Goto | 2009-01-06 |
| 7460789 | Optical transmission system and method of controlling optical transmission system | Kaori Odate, Takuya Miyashita | 2008-12-02 |
| 7394993 | Dispersion compensation quantity setting method, receiving terminal station, and wavelength-multiplexing optical transmission system | Takuya Miyashita | 2008-07-01 |
| 7391560 | Multistage optical amplifier having tilt compensation feature | Hidezumi Natori, Takehiro Fujita | 2008-06-24 |
| 7366422 | Dispersion compensating device and optical transmission system | Yuuichi Kawahata | 2008-04-29 |
| 7359645 | Dispersion compensating method, optical transmission system, and optical transmission apparatus | Takuya Miyashita, Ryosuke Goto | 2008-04-15 |