Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9423559 | Multi-core amplification optical fiber | Yukihiro TSUCHIDA | 2016-08-23 |
| 9270076 | Optical amplifier, optical amplifying system, wavelength converter, optical amplification method, and optical communication system | Shigehiro Takasaka | 2016-02-23 |
| 9225141 | Multi-core amplification optical fiber and multi-core optical fiber amplifier | Yukihiro TSUCHIDA, Koichi Maeda, Hiroshi Matsuura, Kengo Watanabe, Tsunetoshi Saito +4 more | 2015-12-29 |
| 9140850 | Optical coupling structure and optical fiber amplifier | Hiroshi Matsuura | 2015-09-22 |
| 7869014 | System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber | Masateru Tadakuma, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2011-01-11 |
| 7809223 | Polarization-maintaining optical fiber, method of manufacturing polarization-maintaining optical-fiber connecting portion, and polarization-maintaining optical-fiber connecting portion | Ryo Miyabe | 2010-10-05 |
| 7679744 | Stokes parameter measurement device and method | Mieko Yamagaki, Kazuyou Mizuno, Takeshi Takagi | 2010-03-16 |
| 7529453 | Optical fiber and optical transmission medium | Ryo Miyabe | 2009-05-05 |
| 7502540 | Optical fiber and optical transmission medium | Ryo Miyabe | 2009-03-10 |
| 7424191 | System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber | Masateru Tadakuma, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2008-09-09 |
| 7369232 | Stokes parameter measurement device and method | Mieko Yamagaki, Kazuyou Mizuno, Takeshi Takagi | 2008-05-06 |
| 7190850 | PMD emulator | Kazuhiro Ikeda | 2007-03-13 |
| 7146085 | Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement | Masateru Tadakuma, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2006-12-05 |
| 7003202 | Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement | Masateru Tadakuma, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2006-02-21 |
| 6933001 | Optical filter and method of manufacturing the same | Abe Hiroyuki, Kazuyou Mizuno | 2005-08-23 |
| 6542666 | Optical component | Toshiaki Tsuda, Shigehito Yodo, Kazuyo Mizuno, Toshihiko Ohta, Yoshihiro Emori +1 more | 2003-04-01 |