Issued Patents All Time
Showing 26–50 of 130 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7969648 | Gain and signal level adjustments of cascaded optical amplifiers | Shinya Inagaki, Norifumi Shukunami, Hiroyuki Itou, Taiki Kobayashi | 2011-06-28 |
| 7957644 | Flexible open ring optical network and method | Koji Takeguchi, Satoru Odate, Cechan Tian | 2011-06-07 |
| 7924499 | Gain and signal level adjustments of cascaded optical amplifiers | Shinya Inagaki, Norifumi Shukunami, Hiroyuki Itou, Taiki Kobayashi | 2011-04-12 |
| 7826743 | Optical ring network for extended broadcasting | Cechan Tian | 2010-11-02 |
| 7787763 | System and method for protecting optical light-trails | Ashwin Gumaste, Paparao Palacharla | 2010-08-31 |
| 7664391 | Method and system for shared optical regeneration | Cechan Tian | 2010-02-16 |
| 7616891 | System and method for transmission and reception of traffic in optical light-trails | Paparao Palacharla, Ashwin Gumaste | 2009-11-10 |
| 7609969 | Method and system for compensating for optical dispersion in an optical signal | Olga Vassilieva | 2009-10-27 |
| 7609966 | Method and system for time-sharing transmission frequencies in an optical network | Ashwin Gumaste, Raghu Ramireddy Valisammagari | 2009-10-27 |
| 7603035 | Method and system for a data centric architecture in an optical network | Ashwin Gumaste, Olga Vassilieva, Cechan Tian | 2009-10-13 |
| 7599110 | Raman pump power control for gain flattening | Miki Onaka | 2009-10-06 |
| 7515828 | System and method for implementing optical light-trails | Ashwin Gumaste, Paparao Palacharla | 2009-04-07 |
| 7483637 | Optical ring network with optical subnets and method | Ashwin Gumaste | 2009-01-27 |
| 7483636 | Optical network with sub-band rejection and bypass | Yasuhiko Aoki | 2009-01-27 |
| 7480092 | Optical amplification method and device usable with bands other than the C-band | Shinya Inagaki | 2009-01-20 |
| 7477447 | Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied | Yasushi Sugaya | 2009-01-13 |
| 7477844 | Method and system for utilizing virtual local access network addressing in optical networks | Ashwin Gumaste, Raghu Ramireddy Valisammagari | 2009-01-13 |
| 7474459 | Multi-wavelength light amplifier | Yasushi Sugaya, Miki Takeda, Terumi Chikama | 2009-01-06 |
| 7466477 | Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier | — | 2008-12-16 |
| 7466917 | Method and system for establishing transmission priority for optical light-trails | Ashwin Gumaste | 2008-12-16 |
| 7457540 | System and method for shaping traffic in optical light-trails | Ashwin Gumaste | 2008-11-25 |
| 7446934 | Raman, pump power control for gain flattening | Miki Onaka | 2008-11-04 |
| 7400440 | Method and system for determining gain for an optical signal | Cechan Tian | 2008-07-15 |
| 7394589 | Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lights | Miki Onaka, Tomoto Tanaka, Etsuko Hayashi, Yasushi Sugaya | 2008-07-01 |
| 7391562 | Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier | — | 2008-06-24 |