Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9197320 | System and method for monitoring polarization-dependent loss | Olga Vassilieva, Motoyoshi Sekiya | 2015-11-24 |
| 9197323 | Asymmetric compensation of polarization dependent loss in dual-polarization optical systems | Olga Vassilieva, Jeng-Yuan Yang, Motoyoshi Sekiya | 2015-11-24 |
| 9112609 | Mitigation of polarization dependent loss in optical multi-carrier/super-channel transmission | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2015-08-18 |
| 9083485 | Defragmentation of optical networks | Xi Wang, Paparao Palacharla, Motoyoshi Sekiya | 2015-07-14 |
| 9042730 | System and method for compensating signal degradation in dual polarization optical systems | Olga Vassilieva, Motoyoshi Sekiya | 2015-05-26 |
| 8989571 | In-band supervisory data modulation using complementary power modulation | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2015-03-24 |
| 8989595 | Mitigation of optical signal to noise ratio degradation arising from polarization dependent loss | Olga Vassilieva, Motoyoshi Sekiya | 2015-03-24 |
| 8989581 | Wavelength reassignment in optical networks | Paparao Palacharla, Xi Wang, Motoyoshi Sekiya | 2015-03-24 |
| 8983290 | System and method for monitoring a dual-polarization signal using an in-band supervisory signal | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya, Jeng-Yuan Yang | 2015-03-17 |
| 8977137 | Polarization dependent loss compensation | Olga Vassilieva, Motoyoshi Sekiya | 2015-03-10 |
| 8942114 | System and method for calculating utilization entropy | Xi Wang, Qiong Zhang, Paparao Palacharla, Motoyoshi Sekiya | 2015-01-27 |
| 8909049 | Method and system for calculating spectrum granularity in flexible grid optical networks | Xi Wang, Qiong Zhang, Paparao Palacharla, Motoyoshi Sekiya | 2014-12-09 |
| 8909063 | Optical QPSK signal regeneration and amplification | Jeng-Yuan Yang, Youichi Akasaka, Motoyoshi Sekiya | 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, Motoyoshi Sekiya | 2014-12-09 |
| 8798481 | Method and system for compensation of laser phase/frequency noise in an optical device | Olga Vassilieva | 2014-08-05 |
| 8761600 | In-band supervisory data modulation | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2014-06-24 |
| 8639120 | Method and system for electrical domain optical spectrum shaping | Paparao Palacharla, Takao Naito | 2014-01-28 |
| 8559829 | Flexible multi-band multi-traffic optical OFDM network | Paparao Palacharla, Xi Wang, Motoyoshi Sekiya | 2013-10-15 |
| 8543000 | System and method for reducing polarization dependent loss cross-talk effects | Olga Vassilieva | 2013-09-24 |
| 8488979 | Multi-level polarization multi-level phase modulator | Takao Naito | 2013-07-16 |
| 8467690 | Method and system for cancellation of chromatic dispersion combined laser phase noise | Takao Naito, Olga Vassilieva | 2013-06-18 |
| 8447182 | Multi-wavelength transponder with wavelength division multiplexing modules | Martin Bouda, Takao Naito | 2013-05-21 |
| 8335438 | Estimating frequency offset using a feedback loop | Takao Naito | 2012-12-18 |
| 8270835 | Method and system for reducing cross-phase modulation in an optical signal | Kevin Croussore, Olga Vassilieva | 2012-09-18 |
| 8204389 | Electronic post-compensation of optical transmission impairments using digital backward propagation | Guifang Li, Eduardo Mateo, Likai Zhu, Xiaoxu Li, Gilad Goldfarb +2 more | 2012-06-19 |