| 12111224 |
Optical transmission path inspecting system, and optical transmission path inspecting device |
Gouichi Fukumoto, Yoshifumi Hishikawa, Toshiyuki Miyamoto, Kenichiro Otsuka |
2024-10-08 |
| 11965801 |
Measurement system |
Kazuya Masuda, Tomohiko Ueda, Kenichiro Otsuka, Tsuneari Ito, Yoshifumi Hishikawa +1 more |
2024-04-23 |
| 10523317 |
Measurement system and measurement method |
Kazuya Masuda, Tomohiko Ueda, Tsuneari Ito, Kenichiro Otsuka, Yoshifumi Hishikawa +5 more |
2019-12-31 |
| 9583911 |
Optical amplifier |
Fumiya UEHARA, Toshiyuki Miyamoto |
2017-02-28 |
| 7307782 |
Raman amplifier and optical communication system including the same |
Motoki Kakui, Takafumi Terahara, Junichi Kumasako |
2007-12-11 |
| 7110648 |
Analog optical transmission system |
Toshiyuki Miyamoto, Tatsuhiko Shitomi |
2006-09-19 |
| 7046428 |
Raman amplifier |
Kiyotaka Murashima |
2006-05-16 |
| 6958857 |
Optical fiber component for Raman amplification, Raman amplifier and optical communications system |
— |
2005-10-25 |
| 6952309 |
Optical amplifier and optical amplification method |
Masayuki Nishimura, Masayuki Shigematsu, Hitoshi Hatayama, Eisuke Sasaoka |
2005-10-04 |
| 6819477 |
Raman amplifier module and optical transmission system using the same |
Masayuki Nishimura, Masaaki Hirano |
2004-11-16 |
| 6819829 |
Optical communication system |
Masayuki Nishimura |
2004-11-16 |
| 6813065 |
Raman amplifier and optical communication system |
Motoki Kakui, Shinji Ishikawa, Masashi Onishi |
2004-11-02 |
| 6806999 |
Raman amplification pumping module, Raman amplifier, and optical communication system |
Motoki Kakui, Masayuki Nishimura |
2004-10-19 |
| 6775055 |
Raman amplifier |
Kiyotaka Murashima |
2004-08-10 |
