US 7,609,977 B2
Optical transmission using semiconductor optical amplifier (SOA)
Yasuhiro Matsui, Lawrence, Mass. (US); Daniel Mahgerefteh, Somerville, Mass. (US); Xueyan Zheng, Andover, Mass. (US); Kevin McCallion, Charlestown, Mass. (US); and Parviz Tayebati, Boston, Mass. (US)
Assigned to Finisar Corporation, Sunnyvale, Calif. (US)
Filed on Aug. 20, 2007, as Appl. No. 11/894,509.
Application 11/894509 is a continuation in part of application No. 11/787163, filed on Apr. 13, 2007.
Application 11/787163 is a continuation in part of application No. 11/441944, filed on May 26, 2006, granted, now 7,492,976.
Application 11/441944 is a continuation in part of application No. 11/272100, filed on Nov. 08, 2005, granted, now 7,477,851.
Application 11/272100 is a continuation in part of application No. 11/084630, filed on Mar. 18, 2005, granted, now 7,406,266.
Application 11/084630 is a continuation in part of application No. 11/068032, filed on Feb. 28, 2005, granted, now 7,555,225.
Application 11/068032 is a continuation in part of application No. 11/037718, filed on Jan. 18, 2005, granted, now 7,536,113.
Application 11/037718 is a continuation in part of application No. 10/308522, filed on Dec. 03, 2002.
Claims priority of provisional application 60/838548, filed on Aug. 18, 2006.
Prior Publication US 2008/0159751 A1, Jul. 03, 2008
Int. Cl. H04B 10/04 (2006.01)
U.S. Cl. 398—201  [398/195] 20 Claims
OG exemplary drawing
 
1. A fiber optic communication system comprising:
an optical signal source adapted to receive a binary first signal and generate a binary second signal, wherein the binary first signal has an amplitude modulated component, wherein the binary second signal has an amplitude modulated component and a frequency modulated component, and further wherein the binary second signal is characterized in that the higher intensity 1 bits are red shifted relative to the lower intensity 0 bits;
a semiconductor optical amplifier (SOA) adapted to receive the binary second signal and generate a binary third signal, wherein the binary third signal has an amplitude modulated component and a frequency modulated component, and further wherein the semiconductor optical amplifier operates in saturation; and
an optical spectrum reshaper (OSR) adapted to reshape the binary third signal into a binary fourth signal, wherein the binary fourth signal has an amplitude modulated component and a frequency modulated component.