Issued Patents All Time
Showing 1–25 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10901242 | Driving device and driving method for phase controller, and optical switch | Ken Tanizawa, Hiroyuki Matsuura, Satoshi Suda, Haruhiko Kuwatsuka, Keijiro Suzuki +3 more | 2021-01-26 |
| 10613412 | Light beam deflecting element, wavelength-selective cross-connect device using same, and optical cross-connect device | Hisato Uetsuka, Hitoshi Kawashima, Kazuhiro Ikeda | 2020-04-07 |
| 10298319 | Optical switch, and optical node monitoring system and monitoring method | Takayuki Kurosu, Kiyo Ishii, Satoshi Suda | 2019-05-21 |
| 9444221 | Laser apparatus and method to re-tune emission wavelength tunable LD | Katsumi Uesaka, Eiichi Banno, Hajime Shoji, Hiroyuki Matsuura, Haruhiko Kuwatsuka +1 more | 2016-09-13 |
| 9395504 | System to control wavelength and method to control wavelength | Katsumi Uesaka, Eiichi Banno, Hajime Shoji, Hiroyuki Matsuura, Haruhiko Kuwatsuka +1 more | 2016-07-19 |
| 9281654 | Raman amplifier, optical repeater, and Raman amplification method | Youichi Akasaka, Yoshihiro Emori | 2016-03-08 |
| 8437074 | Raman amplifier, optical repeater, and Raman amplification method | Youichi Akasaka, Yoshihiro Emori | 2013-05-07 |
| 8059966 | Wavelength division multiplex optical regeneration system and wavelength division multiplex optical regeneration method | Koji Igarashi, Shunichi Matsushita, Shigehiro Takasaka, Takashi Inoue, Hideaki Tobioka +1 more | 2011-11-15 |
| 7769298 | Light source in optical transmission system, waveform shaper, optical pulse train generator and optical reproduction system | Koji Igarashi, Yoshihiro Emori, Atsushi Oguri, Osamu Aso, Masateru Tadakuma | 2010-08-03 |
| 7692852 | Raman amplifier, optical repeater, and Raman amplification method | Youichi Akasaka, Yoshihiro Emori | 2010-04-06 |
| 7548368 | Raman amplifier, optical repeater, and raman amplification method | Youichi Akasaka, Yoshihiro Emori | 2009-06-16 |
| 7535629 | Method and apparatus for controlling multiple-wavelength-pumped Raman amplifier and computer product | Koji Fujimura, Misao Sakano, Takeshi Nakajima | 2009-05-19 |
| 7483608 | Method of designing optical pulse shaping device and optical pulse shaping device | Takashi Inoue | 2009-01-27 |
| 7447444 | Light source in optical transmission system, waveform shaper, optical pulse train generator, and optical reproduction system | Koji Igarashi, Yoshihiro Emori, Atsushi Oguri, Osamu Aso, Masateru Tadakuma | 2008-11-04 |
| 7423564 | Optical signal processing device for A/D converter including optical encoders with nonlinear loop mirrors | Ken-ichi Kitayama, Kensuke Ikeda, Mohammad Abdul Jalil, Takashi Inoue | 2008-09-09 |
| 7400442 | Optical signal amplifier | Shunichi Matsushita, Yoshihiro Emori | 2008-07-15 |
| 7262903 | Method and apparatus for controlling multiple-wavelength-pumped raman amplifier and computer product | Koji Fujimura, Misao Sakano, Takeshi Nakajima | 2007-08-28 |
| 7224513 | Pumping light source having amplification-band extending function for Raman amplification, Raman amplifier using the same, and method and program for setting amplification band extension | Atsushi Oguri, Yoshihiro Emori | 2007-05-29 |
| 7206123 | Raman amplifier, pump source for use in a raman amplifier and method for amplifying an optical signal | Yoshihiro Emori, Jake Bromage, Lynn Nelson | 2007-04-17 |
| 7199919 | Tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling tunable Raman pumps, and Raman amplifiers | Yoshihiro Emori, Junji Yoshida, Naoki Tsukiji | 2007-04-03 |
| 7155095 | Method for efficient four-wave mixing generation and short pulse generation equipment using the method | Osamu Aso, Masateru Tadakuma | 2006-12-26 |
| 7072369 | Depolarized laser diode module and depolarized laser diode light source | Shunichi Matsushita, Yoshihiro Emori | 2006-07-04 |
| 7061664 | Wavelength converter and wavelength division multiplexing transmission method using the same | Osamu Aso, Kouki Sato, Hijiri Nimura | 2006-06-13 |
| 7050221 | Raman amplifier | Yoshihiro Emori | 2006-05-23 |
| 6977769 | Pump light source device for optical Raman amplification and optical Raman amplification system using the same | Shunichi Matsushita, Yoshihiro Emori | 2005-12-20 |