Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10001693 | Light communication device, light module, and method for coupling | Masaki Sugiyama, Akira Ishii, Eiichi Kodera | 2018-06-19 |
| 9285650 | Optical modulating apparatus and optical transmitter | Masaki Sugiyama, Eiichi Kodera, Yoshinobu Kubota | 2016-03-15 |
| 7209284 | Optical amplifier using reflection-type variable optical attenuator for feedback | Norifumi Shukunami, Yuichi Suzuki, Takashi Ishiwada | 2007-04-24 |
| 6993217 | Optical switch device | Shinji Maruyama | 2006-01-31 |
| 6856455 | Light source apparatus, optical amplifier and optical communication system | Norifumi Shukunami | 2005-02-15 |
| 6829403 | Optical switch having an array of optical fibers with respective, removable disposed mirrors and a lens disposed away from an end surface of each corresponding optical fiber | — | 2004-12-07 |
| 6829396 | Wavelength characteristic control device, gain equalizer, and light amplifier | — | 2004-12-07 |
| 6807335 | Wavelength characteristic variable apparatus | Nobuaki Mitamura | 2004-10-19 |
| 6650797 | Wavelength characteristics control device, gain equalizer and light amplifier | — | 2003-11-18 |
| 6515776 | Optical device, terminal unit, and system for wavelength division multiplexing | — | 2003-02-04 |
| 6496619 | Method for gain equalization, and device and system for use in carrying out the method | — | 2002-12-17 |
| 6452720 | Light source apparatus, optical amplifier and optical communication system | Norifumi Shukunami | 2002-09-17 |
| 6370285 | Wavelength characteristic control device, gain equalizer, and light amplifier | — | 2002-04-09 |
| 6310717 | Optical amplifier and fiber module for optical amplification | Norifumi Shukunami | 2001-10-30 |
| 6295393 | Polarized light synthesizing apparatus, a polarized light splitting apparatus and a pump light outputting apparatus | — | 2001-09-25 |
| 6115178 | Optical device | Teruhiro Kubo | 2000-09-05 |
| 6101025 | Optical repeater having redundancy | — | 2000-08-08 |
| 6046813 | Wavelength detecting device | — | 2000-04-04 |
| 5905827 | Optical multiplexer/demultiplexer and wavelength division multiplexing module | Teruhiro Kubo, Nobuhiro Fukushima | 1999-05-18 |
| 5812307 | Optical device and optical amplifier | — | 1998-09-22 |
| 5801892 | Optical device having an optical film with an incident angle thereupon variable | Nobuhiro Fukushima | 1998-09-01 |
| 5796887 | Optical device for coupling and separating two light components | Hideki Noda | 1998-08-18 |
| 5739951 | Polarization independent optical device | — | 1998-04-14 |
| 5377040 | Polarization independent optical device | — | 1994-12-27 |
| 5223975 | Polarization beam coupler including a splitter for producing an output monitor beam | Hisashi Takamatsu, Kenichi Abe | 1993-06-29 |