Issued Patents 2002
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501592 | Optical amplifier reflecting spontaneous emission back into the amplifier to improve efficiency | — | 2002-12-31 |
| 6493129 | Tunable optical filter | Nobuhiro Fukushima | 2002-12-10 |
| 6452701 | Wavelength division multiplexing communications network supervisory system | Takeo Osaka, Shin-ichirou Harasawa | 2002-09-17 |
| 6381064 | Method for gain equalization, and device and system for use in carrying out the method | — | 2002-04-30 |
| 6366379 | REMOTE CONTROL DEVICE OF ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING EQUALIZER USING ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING OPTICAL ADD/DROP MULTIPLEXER USING ACOUSTO-OPTIC TUNABLE FILTER | Terumi Chikama | 2002-04-02 |
| 6344914 | Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifier | Naomasa Shimojoh, Terumi Chikama | 2002-02-05 |
| 6339492 | Tunable optical filter | Nobuhiro Fukushima | 2002-01-15 |