Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7986453 | Raman amplifier for amplifying signal light for optical communication, optical communication system equipped with Raman amplifier, and method for controlling Raman amplifier | — | 2011-07-26 |
| 7929201 | Multistage optical amplifier with gain control using pump ratio | Tatsuya Tsuzuki, Norifumi Shukunami, Yuji Tamura, Yoshio Shimano, Takashi Satou | 2011-04-19 |