Issued Patents All Time
Showing 51–75 of 135 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7693425 | Method and system for compensating for optical dispersion in an optical signal in a hybrid optical network | Olga Vassilieva | 2010-04-06 |
| 7684706 | System and method for traffic distribution in an optical network | Yoichi Akasaka, Martin Bouda | 2010-03-23 |
| 7668465 | Dispersion-managed optical transmission system | Toshiki Tanaka | 2010-02-23 |
| 7668466 | Free space demodulator for demodulating a signal | Cechan Tian | 2010-02-23 |
| 7664397 | Optical network system | Masahiro Yuki, Toru Katagiri | 2010-02-16 |
| 7653124 | Monitoring differential phase-shifted keying demodulation | Cechan Tian | 2010-01-26 |
| 7650083 | Demodulating a signal by performing consecutive beam splitting | Cechan Tian | 2010-01-19 |
| 7603036 | System and method for managing network components in a hybrid passive optical network | Paparao Palacharla, Martin Bouda | 2009-10-13 |
| 7577361 | Optical network system and optical coupling apparatus | Toshiki Tanaka | 2009-08-18 |
| 7546036 | Hybrid passive optical network using shared wavelengths | Martin Bouda | 2009-06-09 |
| 7539360 | Monitoring modulator bias using photon absorption | Cechan Tian | 2009-05-26 |
| 7522838 | Distribution components for a wavelength-sharing network | Martin Bouda | 2009-04-21 |
| 7471902 | Wavelength allocation method of signal light, and optical transmission apparatus and wavelength division multiplexing optical transmission system using the method | Akira Miura, Toru Katagiri | 2008-12-30 |
| 7457546 | Dispersion-managed optical transmission system | Toshiki Tanaka | 2008-11-25 |
| 7400830 | Quality monitoring method and apparatus for wavelength division multiplexed optical signal and optical transmission system using the same | Kenichi Torii, Hiroshi Nakamoto, Toru Katagiri | 2008-07-15 |
| 7379233 | Raman amplifier utilizing pump modulation for expanding gain band width | Hiroshi Nakamoto, Kenichi Torii, Toshiki Tanaka | 2008-05-27 |
| 7242519 | Raman amplifier and optical transmission system using the same | Kenichi Torii, Toshiki Tanaka, Masahiro Yuki | 2007-07-10 |
| 7220092 | Method and apparatus for collectively changing components at component supply section | Susumu Takaiti, Kazuhiko Narikiyo, Kanji Hata, Yoshinori Seki, Takeshi Kuribayashi +1 more | 2007-05-22 |
| 7209654 | Optical transmission system | Toshiki Tanaka | 2007-04-24 |
| 7164864 | Optical communications system and transmission section repair method | Toshiki Tanaka | 2007-01-16 |
| 7146066 | Wavelength division multiplexing optical transmission system | Toru Katagiri | 2006-12-05 |
| 7034991 | Optical amplification and transmission system | Toshiki Tanaka | 2006-04-25 |
| 6954304 | Raman amplifier | Toshiki Tanaka | 2005-10-11 |
| 6930823 | Optical transmission method and optical transmission system utilizing Raman amplification | Hiroshi Nakamoto, Naomasa Shimojoh, Toshiki Tanaka | 2005-08-16 |
| 6882466 | Optical amplifier | Naomasa Shimojoh | 2005-04-19 |