Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662317 | Method and apparatus for chromatic dispersion equalization | — | 2003-12-09 |
| 6654561 | Method and apparatus for measuring optical signal-to-noise ratio, and pre-emphasis method and optical communication system each utilizing the method | Takafumi Terahara, Takeshi Sakamoto, Motoyoshi Sekiya, Makoto Murakami, Kazuo Yamane +1 more | 2003-11-25 |
| 6639716 | Wavelength division multiplexing optical communication system and optical amplifying device | — | 2003-10-28 |
| 6600584 | Multiplex optical communication system | — | 2003-07-29 |
| 6570703 | Optical amplifying apparatus, optical amplifying method, and optical communication system | Makoto Murakami, Motoyoshi Sekiya, Hideto Saito, Takeshi Sakamoto, Kazuo Yamane | 2003-05-27 |