| 8320771 |
Optical transmission system and repeater |
Tsuyoshi Yoshida, Toshiyuki Tokura, Takashi Sugihara, Katsuhiro Shimizu, Hiroki Shima +1 more |
2012-11-27 |
| 7340182 |
Multiplexer |
Seiji Kozaki, Kazuo Kubo, Hiroshi Ichibangase |
2008-03-04 |
| 6867908 |
Optical amplifier having various control circuitry |
Kiwami Matsushita, Yukio Horiuchi, Masatoshi Suzuki, Noboru Edagawa, Shu Yamamoto +1 more |
2005-03-15 |
| 6801720 |
Optical signal quality supervisory device |
Takashi Mizuochi, Yojiro Osaki, Hiroshi Ichibangase, Kiwami Matsushita, Tadayoshi Kitayama +4 more |
2004-10-05 |
| 6614588 |
Optical amplifier having various control circuitry |
Kiwami Matsushita, Yukio Horiuchi, Masatoshi Suzuki, Noboru Edagawa, Shu Yamamoto +1 more |
2003-09-02 |
| 6519381 |
Optical switch and method of producing the same |
Tatsuo Hatta, Atsushi Sugitatsu, Takeshi Saito, Jun Fujita |
2003-02-11 |
| 6434288 |
Optical switching system |
Hiroshi Ichibangase, Takashi Mizuochi, Tadayoshi Kitayama, Shu Yamamoto, Tetsuya Miyazaki +2 more |
2002-08-13 |
| 6094293 |
Optical switching apparatus for use in an optical communication system |
Yoshinori Yokoyama, Munehisa Takeda, Hitoshi Ota, Tadayoshi Kitayama |
2000-07-25 |
| 6028695 |
Optical modulating apparatus |
Takashi Mizuochi, Katsuhiro Shimizu, Kiwami Matsushita, Tadayoshi Kitayama, Masatoshi Suzuki +2 more |
2000-02-22 |
| 5319485 |
Wavelength-assignable optical communication system |
Tadahiko Yasui |
1994-06-07 |
