Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624926 | Optical amplifier with pump light source control for raman amplification | Etsuko Hayashi, Yasushi Sugaya, Miki Onaka | 2003-09-23 |
| 6577437 | Optical amplification apparatus utilizing Raman amplification and controlling method thereof | Yasushi Sugaya, Etsuko Hayashi | 2003-06-10 |
| 6510000 | Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lights | Miki Onaka, Etsuko Hayashi, Yasushi Sugaya, Susumu Kinoshita | 2003-01-21 |