| 7356257 |
Optical switching apparatus and optical communication network system |
Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro |
2008-04-08 |
| 7272314 |
Optical crossconnect apparatus and optical transmission system |
Yasuyuki Fukashiro, Yukio Hayashi, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani +1 more |
2007-09-18 |
| 7242860 |
Optical protection switching using 2 by 2 switching functions |
Hiroki Ikeda, Shoichi Hanatani |
2007-07-10 |
| 7206475 |
Optical switching apparatus, optical transmission system and method of setting up for optical signal route |
Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro, Takashi Mori |
2007-04-17 |
| 7194205 |
Optical transmission apparatus and optical systems |
Hideaki Tsushima, Yasushi Sawada |
2007-03-20 |
| 6933852 |
Optical switching apparatus and optical communication network system |
Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro |
2005-08-23 |
| 6839480 |
Optical switching apparatus, optical transmission system and method of setting up for optical signal route |
Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro, Takashi Mori |
2005-01-04 |
| 6813445 |
Optical crossconnect apparatus and optical transmission system |
Yasuyuki Fukashiro, Yukio Hayashi, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani +1 more |
2004-11-02 |
| 6778725 |
Optical switching apparatus, optical transmission system and method of setting up for optical signal route |
Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro, Takashi Mori |
2004-08-17 |
| 6731874 |
Optical transmission apparatus and optical systems |
Hideaki Tsushima, Yasushi Sawada |
2004-05-04 |
| 6424445 |
Optical transmission apparatus and optical systems |
Hideaki Tsushima, Yasushi Sawada |
2002-07-23 |
| 6362905 |
Optical crossconnect apparatus and optical transmission system |
Yasuyuki Fukashiro, Yukio Hayashi, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani +1 more |
2002-03-26 |
| 6317230 |
Optical cross-connect system and optical transmission system |
Shoichi Hanatani, Hirohisa Sano, Tatsuo Kanetake |
2001-11-13 |
| 6304346 |
Fault restoration control method and it's apparatus in a communication network |
Yasushi Sawada, Hideaki Tsushima, Tatsuo Kanetake |
2001-10-16 |
| 5815502 |
Information transmission system with variable transmission rate |
Atsushi Saito, Yoshitaka Takasaki, Taizo Kinoshita |
1998-09-29 |
| 5790290 |
Optical distribution system having time switch |
Toshio Kirihara |
1998-08-04 |
| 5761352 |
Optical switch having a two-level crossing between input/output optical waveguides |
Hideaki Takano, Toshihisa Tsukada, Hiroaki Inoue |
1998-06-02 |
| 5576872 |
Optical distribution device, optical distribution circuit, and synthesizing method of distribution circuits |
Toshio Kirihara |
1996-11-19 |
| 5515196 |
Optical intensity and phase modulators in an optical transmitter apparatus |
Hirohisa Sano, Katsuhiko Kuboki, Shinya Sasaki |
1996-05-07 |
| 5515368 |
Information transmission system with variable transmission rate |
Atsushi Saito, Yoshitaka Takasaki, Taizo Kinoshita |
1996-05-07 |
| 5323258 |
Homodyne optical receiver equipment |
Hideaki Tsushima, Ryoji Takeyari, Shinya Sasaki, Katsuhiko Kuboki |
1994-06-21 |
| 5305134 |
Optical frequency division multiplexing transmitter and optical frequency division multiplexing transmission apparatus |
Hideaki Tsushima, Shinya Sasaki, Kiichi Yamashita |
1994-04-19 |
| 5144467 |
Optical tuning method and apparatus suitable for selective reception of optical frequency division multiplex signals |
Kiichi Yamashita, Shinya Sasaki, Hideaki Tsushima |
1992-09-01 |