Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8363309 | Optical amplifier and method for suppressing polarization dependent gain of optical amplifier | — | 2013-01-29 |
| 8351112 | Optical amplifier | — | 2013-01-08 |
| 8194309 | Optical amplifier using delayed phase matching fiber | Takashi Shimizu, Shinya Inagaki, Keiko Sasaki | 2012-06-05 |
| 8116626 | Optical transmission apparatus and optical attenuation amount control method | Ichiro Nakajima, Keiko Sasaki, Shinichirou Muro, Etsuko Hayashi | 2012-02-14 |
| 8077383 | Optical amplifier | Keiko Sasaki, Shinichirou Muro | 2011-12-13 |
| 8026538 | Photo-detecting apparatus and photo-detecting method | Keiko Sasaki, Shinichirou Muro | 2011-09-27 |
| 8027082 | Raman amplifier and excitation light source used thereof | Shinichirou Muro | 2011-09-27 |
| 7990608 | Optical transmission system | Keiko Sasaki, Shinichirou Muro | 2011-08-02 |
| 7643206 | Optical amplifier | Keiko Sasaki, Shinichirou Muro | 2010-01-05 |
| 7616848 | Optical transmission apparatus | Keiko Sasaki, Shinichirou Muro, Etsuko Hayashi | 2009-11-10 |
| 7330303 | Wavelength division multiplexed optical amplifier | Takashi Sato, Kazunari Tsubaki, Keiko Sasaki, Shinya Inagaki | 2008-02-12 |
| 7236294 | Optical amplifier | Shinya Inagaki, Yoshihito Onoda, Takashi Shimizu, Keiko Sasaki | 2007-06-26 |
| 7139453 | Variable dispersion compensator utilizing wavelength conversion | Shinya Inagaki, Keiko Sasaki | 2006-11-21 |
| 7136219 | Optical amplifier using delayed phase matching fiber | Takashi Shimizu, Shinya Inagaki, Keiko Sasaki | 2006-11-14 |
| 7085043 | Optical amplifier | Shinya Inagaki, Keiko Sasaki | 2006-08-01 |
| 6738182 | Optical fiber amplifier | Shinya Inagaki, Norifumi Shukunami, Manabu Watanabe, Hisashi Takamatsu, Keiko Sasaki +3 more | 2004-05-18 |
| 6625362 | Dispersion compensating optical fiber | Shinya Inagaki | 2003-09-23 |