Issued Patents All Time
Showing 26–50 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10038496 | Method for determining optical network utilization efficiency | Xi Wang, Qiong Zhang, Paparao Palacharla, Tadashi Ikeuchi | 2018-07-31 |
| 9998563 | Vertex-centric service function chaining in multi-domain networks | Qiong Zhang, Paparao Palacharla, Xi Wang, Tadashi Ikeuchi | 2018-06-12 |
| 9973383 | Placement of wavelength shifters in optical networks | Xi Wang, Paparao Palacharla, Tadashi Ikeuchi | 2018-05-15 |
| 9967053 | Shortest minimum regeneration path search in networks | Xi Wang, Qiong Zhang, Paparao Palacharla, Tadashi Ikeuchi | 2018-05-08 |
| 9967054 | Optimization of networks carrying superchannels with different modulation formats | Olga Vassilieva, Tadashi Ikeuchi | 2018-05-08 |
| 9941994 | Wavelength shift elimination during spectral inversion in optical networks | Kevin Croussore, Olga Vassilieva, Takao Naito | 2018-04-10 |
| 9923634 | Harmonic generation and phase sensitive amplification using a bragg reflection waveguide | Youichi Akasaka, Jeng-Yuan Yang, Motoyoshi Sekiya | 2018-03-20 |
| 9912435 | Nonlinear penalty estimation using spectral inversion in optical transport networks | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2018-03-06 |
| 9843410 | Low-noise optical phase sensitive amplifier using a semiconductor nonlinear optical device | Jeng-Yuan Yang, Youichi Akasaka, Motoyoshi Sekiya | 2017-12-12 |
| 9838123 | Nonlinear noise mitigation with spectral inversion in optical transport networks | Olga Vassilieva, Paparao Palacharla, Tadashi Ikeuchi | 2017-12-05 |
| 9838253 | Object-oriented network virtualization | Xi Wang, Motoyoshi Sekiya, Paparao Palacharla, Qiong Zhang | 2017-12-05 |
| 9768878 | Methods and systems for superchannel power pre-emphasis | Olga Vassilieva, Motoyoshi Sekiya | 2017-09-19 |
| 9712249 | Methods and systems for superchannel subcarrier monitoring using amplitude modulated tones | Olga Vassilieva, Motoyoshi Sekiya | 2017-07-18 |
| 9698912 | Methods and systems for superchannel subcarrier monitoring using frequency modulation tones | Olga Vassilieva, Motoyoshi Sekiya | 2017-07-04 |
| 9673907 | Constellation shaping of modulation formats for optical communication systems | Olga Vassilieva, Tadashi Ikeuchi | 2017-06-06 |
| 9654223 | Superchannel power pre-emphasis based on transmission criteria | Olga Vassilieva, Motoyoshi Sekiya | 2017-05-16 |
| 9614638 | Methods and systems for periodic optical filtering to identify tone modulated optical signals | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2017-04-04 |
| 9515734 | System and method for cross-phase modulation noise reduced transmission in hybrid networks | Olga Vassilieva | 2016-12-06 |
| 9485554 | Methods and systems for using modulation frequencies for optical channel monitoring with periodic optical filtering | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2016-11-01 |
| 9485019 | Methods and systems for optical channel monitoring with periodic optical filtering of dual polarization signals | Olga Vassilieva, Motoyoshi Sekiya | 2016-11-01 |
| 9461745 | Optimizing optical network simulations | Olga Vassilieva, Motoyoshi Sekiya | 2016-10-04 |
| 9444550 | Flexible virtual optical network provisioning using distance-adaptive modulation | Xi Wang, Qiong Zhang, Paparao Palacharla, Motoyoshi Sekiya | 2016-09-13 |
| 9374158 | Electronic wavefront correction for free-space optical communications | Guifang Li, Xiaobo Xie | 2016-06-21 |
| 9344190 | Flexible placement of spectral inverters in optical networks | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2016-05-17 |
| 9344194 | System and method for monitoring and control of an optical modulator for an M-QAM transmitter | Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2016-05-17 |