Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7869014 | System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber | Masateru Tadakuma, Yu Mimura, Misao Sakano, Takeshi Nakajima, Katsutoshi Takahashi | 2011-01-11 |
| 7769298 | Light source in optical transmission system, waveform shaper, optical pulse train generator and optical reproduction system | Koji Igarashi, Yoshihiro Emori, Atsushi Oguri, Shu Namiki, Masateru Tadakuma | 2010-08-03 |
| 7447444 | Light source in optical transmission system, waveform shaper, optical pulse train generator, and optical reproduction system | Koji Igarashi, Yoshihiro Emori, Atsushi Oguri, Shu Namiki, Masateru Tadakuma | 2008-11-04 |
| 7424191 | System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber | Masateru Tadakuma, Yu Mimura, Misao Sakano, Takeshi Nakajima, Katsutoshi Takahashi | 2008-09-09 |
| 7408701 | Multi-frequency light source | Shunichi Matushita, Misao Sakano, Masateru Tadakuma | 2008-08-05 |
| 7155095 | Method for efficient four-wave mixing generation and short pulse generation equipment using the method | Masateru Tadakuma, Shu Namiki | 2006-12-26 |
| 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, Yu Mimura, Misao Sakano, Takeshi Nakajima, Katsutoshi Takahashi | 2006-12-05 |
| 7061664 | Wavelength converter and wavelength division multiplexing transmission method using the same | Shu Namiki, Kouki Sato, Hijiri Nimura | 2006-06-13 |
| 7054057 | Multi-frequency light source | Shunichi Matushita, Misao Sakano, Masateru Tadakuma | 2006-05-30 |
| 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, Yu Mimura, Misao Sakano, Takeshi Nakajima, Katsutoshi Takahashi | 2006-02-21 |
| 6920263 | Optical pulse generator | Masateru Tadakuma, Shunichi Matsushita, Misao Sakano, Shu Namiki | 2005-07-19 |
| 6892015 | Optical pulse waveform conversion | Masateru Tadakuma, Misao Sakano | 2005-05-10 |
| 6831775 | Method and apparatus for wavelength conversion | Shunichi Matsushita, Misao Sakano | 2004-12-14 |
| 6665113 | Wavelength converter and wavelength division multiplexing transmission method using same | Shu Namiki, Kouki Sato, Hijiri Nimura | 2003-12-16 |
| 6522818 | Method for efficient four-wave mixing generation and short pulse generation equipment using the method | Masateru Tadakuma, Shu Namiki | 2003-02-18 |
| 6459525 | Optical fiber type wide bandwidth wavelength converter and wavelength converting optical fiber used therefor | Shu Namiki | 2002-10-01 |
| 6384964 | Optical gain equalizer, and method for producing the optical gain equalizer, and applications of the optical gain equalizer | Kazuyo Mizuno, Shoichi Ozawa, Shu Namiki, Yuichiro Irie | 2002-05-07 |
| 6377390 | Optical gain equalizer, and optical amplifier and wavelength-division multiplex transmitter both comprising the optical gain equalizer | Kazuyo Mizuno, Shyoichi Ozawa, Shu Namiki, Ikuo Ohta, Yuichiro Irie | 2002-04-23 |
| 5965874 | Method and apparatus for measuring the polarization characteristics of optical transmission medium | Isamu Ohshima, Haruki Ogoshi | 1999-10-12 |