Issued Patents 2003
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661974 | Optical transmitter and optical transmission system | Yuichi Akiyama, George Ishikawa, Hiroki Ooi | 2003-12-09 |
| 6647211 | 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 | Takafumi Terahara | 2003-11-11 |
| 6631026 | Optical amplifier, excitation light source control method for use in optical amplifier, and optical amplifier control method | Susumu Kinoshita | 2003-10-07 |
| 6583900 | Optical transmission apparatus, optical transmission system, and optical terminal station | Hiroshi Onaka, Hideyuki Miyata, Kazue Otsuka, Yutaka Kai, Tadao Nakazawa | 2003-06-24 |
| 6545784 | Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit | Kazue Okazaki, Hiroshi Onaka, Hideyuki Miyata, Yutaka Kai | 2003-04-08 |
| 6542291 | Optical amplifier excitation light source control method for use in optical amplifier and optical amplifier control method | Susumu Kinoshita | 2003-04-01 |
| 6538782 | Light branching/inserting apparatus and light branching apparatus using wavelength selection filter | Kazue Otsuka, Hiroshi Onaka | 2003-03-25 |
| 6507431 | Remotely pumping type multi-wavelength light transmission system | Yasushi Sugaya | 2003-01-14 |