| US 7,492,976 B2 | ||
| Flat dispersion frequency discriminator (FDFD) | ||
| Daniel Mahgerefteh, Los Angeles, Calif. (US); Duncan John William Walker, Somerville, Mass. (US); and Roeland Nuyts, Utrecht (Netherlands) | ||
| Assigned to Finisar Corporation, Sunnyvale, Calif. (US) | ||
| Filed on May 26, 2006, as Appl. No. 11/441,944. | ||
| Application 11/441944 is a continuation of application No. 10/680607, filed on Oct. 06, 2003, granted, now 7,054,538. | ||
| Application 10/680607 is a continuation in part of application No. 10/289944, filed on Nov. 06, 2002, granted, now 6,963,685. | ||
| Claims priority of provisional application 60/416102, filed on Oct. 04, 2002. | ||
| Prior Publication US 2006/0274993 A1, Dec. 07, 2006 | ||
| Int. Cl. G02F 1/295 (2006.01) | ||
| U.S. Cl. 385—4 | 9 Claims |
| 1. A fiber optic communication system, comprising:
an optical signal source adapted to produce a frequency modulated signal; and
a filter adapted to receive the frequency modulated signal and output a substantially amplitude modulated signal where a spectral
profile of the filter is substantially similar to a gaussian profile near a transmission peak having a low frequency side
and a high frequency side;
where the filter has a substantially negative dispersion on the low frequency side of the transmission peak and a substantially
positive dispersion on the high frequency side of the transmission peak.
|