Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8116626 | Optical transmission apparatus and optical attenuation amount control method | Tomoaki Takeyama, Ichiro Nakajima, Keiko Sasaki, Shinichirou Muro | 2012-02-14 |
| 8064130 | Optical amplifier | Masato Nishihara, Yasushi Sugaya | 2011-11-22 |
| 8054455 | Optical amplifier provided with control function of pumping light, and optical transmission system using the same | Yasushi Sugaya, Masato Nishihara | 2011-11-08 |
| 7843631 | Gain control apparatus, optical transmission apparatus, gain control method for optical amplifier, and wavelength multiplex optical transmission system | Miki Onaka, Hideaki Sugiya, Yasushi Sugaya | 2010-11-30 |
| 7813642 | Optical transmission apparatus and method of controlling the same | Shinichirou Muro, Hideaki Sugiya, Yasushi Sugaya | 2010-10-12 |
| 7751119 | Optical surge suppressive type optical amplifier | Miki Onaka | 2010-07-06 |
| 7729588 | Optical fiber, manufacturing method of the same, and optical amplifier | Masato Nishihara, Shinya Inagaki | 2010-06-01 |
| 7719758 | Optical amplifier provided with control function of pumping light, and optical transmission system using the same | Yasushi Sugaya | 2010-05-18 |
| 7715093 | Individual band gain equalizer for optical amplifiers | Masato Nishihara, Miki Onaka | 2010-05-11 |
| 7688498 | Optical amplifier and optical monitor circuit | Miki Onaka, Hiroshi Onaka | 2010-03-30 |
| 7616848 | Optical transmission apparatus | Tomoaki Takeyama, Keiko Sasaki, Shinichirou Muro | 2009-11-10 |
| 7551347 | Optical amplification characteristics simulation apparatus and optical amplification characteristics simulation method | Shunsuke Ono, Setsuhisa Tanabe, Shinichirou Muro, Masato Nishihara | 2009-06-23 |
| 7529022 | Raman amplifier and wavelength division multiplexing optical communication system, and method of controlling raman amplification | Miki Onaka, Yasushi Sugaya | 2009-05-05 |
| 7505197 | Optical amplifier provided with control function of pumping light, and optical transmission system using the same | Yasushi Sugaya, Masato Nishihara, Shinichirou Muro | 2009-03-17 |
| 7417791 | Optical amplifier for amplifying multi-wavelength light | Miki Onaka, Yasushi Sugaya, Norifumi Shukunami, Manabu Watanabe | 2008-08-26 |
| 7400441 | Optical amplifier, optical amplification repeater and pump light supply control method | Shinichirou Muro, Yasushi Sugaya | 2008-07-15 |
| 7394589 | Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lights | Miki Onaka, Tomoto Tanaka, Yasushi Sugaya, Susumu Kinoshita | 2008-07-01 |
| 7362499 | Optical amplifier with pump light source control for Raman amplification | Tomoto Tanaka, Yasushi Sugaya, Miki Onaka | 2008-04-22 |
| 7359112 | Individual band gain equalizer for optical amplifiers | Masato Nishihara, Miki Onaka, Shinichirou Muro | 2008-04-15 |
| 7268936 | Optical amplifier having polarization mode dispersion compensation function | Miki Onaka, Yasushi Sugaya | 2007-09-11 |
| 7212335 | Apparatus and method for amplification medium performance simulation, and optical amplifier | Masato Nishihara, Yasushi Sugaya | 2007-05-01 |
| 7180654 | Raman amplifier | Yasushi Sugaya, Shinichirou Muro | 2007-02-20 |
| 7145718 | Control method of optical fiber amplifier and optical transmission system | Yasushi Sugaya, Shinichirou Muro | 2006-12-05 |
| 7127139 | Optical multiplexing method and optical multiplexer, and optical amplifier using same | Miki Onaka, Hiroshi Onaka | 2006-10-24 |
| 7119950 | Amplification method and optical amplifier for wavelength division multiplexed signal light | Chihiro Ohshima | 2006-10-10 |