Issued Patents All Time
Showing 1–25 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9515733 | Mitigation of spectral offset in an optical filter | Youichi Akasaka, Jeng-Yuan Yang, Motoyoshi Sekiya, Satoru Okano, Takuji Maeda | 2016-12-06 |
| 9515727 | In-band optical signal-to-noise ratio monitor | Jeng-Yuan Yang, Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Satoru Okano | 2016-12-06 |
| 9270369 | Correction table for interferometric optical signal-to-noise ratio monitor | Jeng-Yuan Yang, Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Kentaro Nakamura +1 more | 2016-02-23 |
| 9112605 | Dual-polarization interferometric optical signal-to-noise ratio monitor | Jeng-Yuan Yang, Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Satoru Okano | 2015-08-18 |
| 9065570 | Optical amplifier with feedback to obtain set gain and gain tilt | Norifumi Shukunami, Tatsuya Tsuzuki | 2015-06-23 |
| 8958695 | Optical adding and dropping device and optical transmission apparatus | Takafumi Terahara, Kentaro Nakamura, Chihiro Ohshima, Tsuyoshi Yamamoto | 2015-02-17 |
| 8948593 | Optical network interconnect device | — | 2015-02-03 |
| 8867927 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Yuichi Akiyama, Takeshi Hoshida, Akira Miura, Yutaka Kai, Jens Rasmussen +5 more | 2014-10-21 |
| 8849113 | Wavelength selective switch and optical transmission apparatus | — | 2014-09-30 |
| 8625996 | Optical transmitter, optical transmission method, and wavelength-selective variable delayer | Toshiki Tanaka, Hisao Nakashima, Takeshi Hoshida, Toru Katagiri, Akira Miura | 2014-01-07 |
| 8331779 | Optical signal processing apparatus | Akira Miura, Tsuyoshi Yamamoto, Naoki Hashimoto | 2012-12-11 |
| 8320772 | Optical transmission apparatus | George Ishikawa, Daisuke Tanimura, Hirotoshi Kodaka | 2012-11-27 |
| 8306430 | Dispersion compensating apparatus and dispersion compensating method | Akira Miura, Kiyotoshi Noheji | 2012-11-06 |
| 8295703 | Optical transmission apparatus | Akira Miura, Takafumi Terahara | 2012-10-23 |
| 8265485 | Optical transmission system and method for chromatic dispersion compensation | Kantaro Nakamura, George Ishikawa | 2012-09-11 |
| 8213798 | Optical transmission apparatus, wavelength division multiplexing optical communication system and optical transmission method | Hiroshi Onaka, George Ishikawa | 2012-07-03 |
| 8131152 | Optical add/drop multiplexer | Yuichi Akiyama, Takafumi Terahara, Jens Rasmussen, Akira Miura, Akihiko Isomura | 2012-03-06 |
| 7983564 | Transmission system and transmission method | Akira Miura, Takeshi Hoshida, Kentaro Nakamura, Yasushi Sugaya, Ryosuke Goto | 2011-07-19 |
| 7945173 | Control apparatus and control method for optical modulator | Yuichi Akiyama | 2011-05-17 |
| 7936993 | Chromatic dispersion compensating apparatus | Takashi Iwabuchi, Takafumi Terahara, Junichi Kumasako, George Ishikawa, Tomoo Takahara | 2011-05-03 |
| 7933519 | Optical cross-connect using wavelength selective switches | Yuichi Akiyama, Takafumi Terahara | 2011-04-26 |
| 7925171 | Optical transmission apparatus | George Ishikawa, Daisuke Tanimura, Hirotoshi Kodaka | 2011-04-12 |
| 7885545 | Dispersion compensation method and compensation node | Akira Miura, Kentaro Nakamura, George Ishikawa | 2011-02-08 |
| 7869715 | Dispersion compensating apparatus and dispersion compensation control method | Hiroshi Onaka, Takeshi Hoshida | 2011-01-11 |
| 7853148 | Optical add/drop multiplexer | Yuichi Akiyama, Takafumi Terahara, Jens Rasmussen, Akira Miura, Akihiko Isomura | 2010-12-14 |