Issued Patents 2003
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671431 | Optical transmission device and optical transmission system employing the same | Takayuki Suzuki, Hiroyuki Nakano | 2003-12-30 |
| 6671084 | Optical amplifier | — | 2003-12-30 |
| 6580550 | Filter with variable transmission character, optical transmission equipment and method of optical transmission | Daisuke Yoshida | 2003-06-17 |
| 6577438 | Method and apparatus for monitoring and controlling gain tilt in an optical amplifier | Toshiki Sugawara | 2003-06-10 |
| 6563978 | Optical transmission system and optical coupler/branching filter | Tadashi Matsuoka, Tetsushi Nakano | 2003-05-13 |
| 6532103 | Optical fiber amplifier and optical transmission system using the same | Shinji Sakano, Ichiro Yokota, Takayuki Suzuki | 2003-03-11 |
| 6525871 | Optical amplification apparatus | — | 2003-02-25 |