Issued Patents All Time
Showing 76–100 of 181 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9071378 | Superimposed signal detection circuit and optical node equipment | — | 2015-06-30 |
| 9054814 | Front end device and superposing signal detecting device | Kazuo Hironishi | 2015-06-09 |
| 9031403 | Optical transmission system and method for monitoring polarization dependent characteristics of optical transmission line | Hisao Nakashima | 2015-05-12 |
| 9014575 | Sampling clock synchronizing apparatus, digital coherent receiving apparatus, and sampling clock synchronizing method | Hisao Nakashima | 2015-04-21 |
| 8989572 | Optical path establishing method and optical node apparatus | Takahito Tanimura, Hisao Nakashima | 2015-03-24 |
| 8965221 | Receiver and cross phase modulation reduction method | Kazuo Hironishi | 2015-02-24 |
| 8947767 | Excitation light source for raman amplification, raman amplifier, and optical transmission system | Shota Mori, Norifumi Shukunami | 2015-02-03 |
| 8942569 | Optical transmission/reception system, optical transmitter, optical receiver, and optical transmission/reception method | Takahito Tanimura, Hisao Nakashima | 2015-01-27 |
| 8942574 | Light receiving device and light receiving method | Hisao Nakashima | 2015-01-27 |
| 8935115 | Method and apparatus for compensating nonlinear damage | Weizhen Yan, Zhenning Tao | 2015-01-13 |
| 8886057 | Optical receiver, signal processor, and optical receiving method | Kazuo Hironishi | 2014-11-11 |
| 8886056 | Apparatus for self-phase modulation noise calculation, apparatus for self-phase modulation noise elimination and optical coherent receiver | Lei Li, Zhenning Tao | 2014-11-11 |
| 8879925 | Optical transmitter and optical transmission method | Yuichi Akiyama | 2014-11-04 |
| 8867927 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Yuichi Akiyama, Akira Miura, Yutaka Kai, Hiroki Ooi, Jens Rasmussen +5 more | 2014-10-21 |
| 8861557 | Wavelength-tunable light source and wavelength variation method | Goji Nakagawa | 2014-10-14 |
| 8849128 | Multi-wavelength light source | Shoichiro Oda, Toshiki Tanaka, Takahito Tanimura, Tomoo Takahara | 2014-09-30 |
| 8818207 | Optical transmitter | Toshiki Tanaka, Tomoo Takahara, Shoichiro Oda | 2014-08-26 |
| 8805207 | Distortion compensator, optical receiver, distortion compensator and optical receiver controlling methods, and optical transmission system | Takahito Tanimura, Hisao Nakashima, Shoichiro Oda | 2014-08-12 |
| 8773755 | Optical amplifier and multicore fiber | Masato Nishihara | 2014-07-08 |
| 8768173 | Optical receiver and optical transmission system | Takahito Tanimura | 2014-07-01 |
| 8744278 | Method for electric power supply of optical receiver, digital signal processing circuit, and optical receiver | Shoichiro Oda, Hisao Nakashima, Takahito Tanimura | 2014-06-03 |
| 8744276 | Optical receiving apparatus and digital receiving circuit | Hisao Nakashima, Takahito Tanimura, Lei Li, Ling Liu | 2014-06-03 |
| 8731411 | Polarization fluctuation compensation device and optical communication system | Shoichiro Oda, Toshiki Tanaka, Hiroyuki Irie, Hiroshi Nakamoto | 2014-05-20 |
| 8705981 | Driver circuit of optical modulator | Tomoo Takahara, Hisao Nakashima | 2014-04-22 |
| 8693891 | Optical modulation apparatus and optical modulation method | Masato Nishihara, Tomoo Takahara | 2014-04-08 |