| 7215894 |
Optical transmitter device |
Yuka Kobayashi |
2007-05-08 |
| 7031621 |
Optical receiving device |
Yasunori Nagakubo |
2006-04-18 |
| 6643472 |
APD bias circuit |
Hisaya Sakamoto, Takashi Kurooka, Akimitsu Miyazaki, Nobuaki Sato |
2003-11-04 |
| 6594070 |
Optical communication system, optical receiver and wavelength converter |
Akihiko Sugata |
2003-07-15 |
| 6590686 |
Optical transmitter |
Motoyoshi Sekiya, Yoshitaka Shimura |
2003-07-08 |
| 6501774 |
Optical transmission apparatus for multiple wavelengths and optical transmission wavelength control method |
Hiroshi Kuwahara, Norio Nagase, Setsuo Misaizu, Tomoyuki Otsuka, Motoyoshi Sekiya |
2002-12-31 |
| 6483625 |
WDM optical transmission apparatus |
Yoshitaka Shimura, Motoyoshi Sekiya |
2002-11-19 |
| 6282098 |
Electronic circuit module, electronic circuit module connecting structure and connecting member, and method for connecting the same |
Makoto Totani, Yasuhide Kuroda, Masaki Ono, Takayoshi Tanemura |
2001-08-28 |
| 6229833 |
Laser diode protecting circuit and laser driving current control circuit |
Mitsuharu Noda, Motoyoshi Sekiya, Setsuo Misaizu, Nobuaki Sato, Yasunori Nagakubo |
2001-05-08 |
| 6188738 |
Clock extraction circuit |
Hisaya Sakamoto, Akihiko Sugata, Akimitsu Miyazaki |
2001-02-13 |
| 6097746 |
Laser diode protecting circuit |
Mitsuharu Noda, Motoyoshi Sekiya, Setsuo Misaizu |
2000-08-01 |
| 6065129 |
Clock signal detection circuit |
Hisaya Sakamoto, Akihiko Sugata, Akimitsu Miyazaki |
2000-05-16 |
| 5808571 |
Synchronization control unit which maintains synchronization between serial-to-parallel converters operating in parallel, or between parallel-to-serial converters operating in parallel |
Naoki Kuwata, Tetsuji Sato, Noriaki Mizuguchi |
1998-09-15 |
| 5652767 |
Data decision circuit used in optical parallel receiving module, optical parallel receiving module, optical parallel transmission system and terminal structure of optical transmission fiber |
Tetsuo Watanabe, Tatsuro Kunikane, Hiroyuki Furukawa, Yoshimitsu Sakai, Sadayuki Miyata +1 more |
1997-07-29 |
| 5253097 |
Demodulator and a polarization diversity receiver for coherent optical communication provided with the demodulator |
Takao Naito, Terumi Chikama, Shigeki Watanabe, Hiroshi Nakamoto, George Ishikawa |
1993-10-12 |
| 5115332 |
Receiver for coherent optical communication |
Takao Naito, Terumi Chikama, Shigeki Watanabe, Yoshihito Onoda, Hideo Kuwahara |
1992-05-19 |
| 5052051 |
Heterodyne receiver for coherent optical communication |
Takao Naito, Terumi Chikama, Shigeki Watanabe, Yoshihito Onoda |
1991-09-24 |
| 5050176 |
Direct modulation phase-shift-keying system and method |
Takao Naito, Terumi Chikama, Shigeki Watanabe, Hiroshi Onaka, Yoshihito Onoda |
1991-09-17 |
| 5003626 |
Dual balanced optical signal receiver |
Hideo Kuwahara, Terumi Chikama, Chiaki Ohsawa |
1991-03-26 |
| 4965858 |
Polarization diversity optical receiver for coherent optical communication |
Takao Naito, Terumi Chikama, Shigeki Watanabe, Yoshihito Onoda, Hideo Kuwahara +2 more |
1990-10-23 |
