Multi-band hybrid SOA-raman amplifier for CWDM

Details Multi-band hybrid SOA-raman amplifier for CWDM Multi-band hybrid SOA-raman amplifier for CWDM

2008-01-14

2009-12-01

Bolda, Eric (Department: 3663)

Optical: systems and elements

Optical amplifier

Raman or brillouin process

C359S341300, C359S344000

Reexamination Certificate

active

07626757

ABSTRACT:
A multi-band hybrid amplifier is disclosed for use in optical fiber systems. The amplifier uses Raman laser pumps and semiconductor optical amplifiers in series to produce a relatively level gain across the frequency range of interest. Multiple Raman pumps are multiplexed before coupling into the fiber. The Raman amplified optical signal may be demultiplexed and separately amplified by the SOAs before remultiplexing. Gain profiles of the Raman pumps and the SOAs are selected to compensate for gain tilt and to alleviate the power penalty due to cross-gain modulation in the SOAs. The disclosed hybrid amplifier is especially useful in coarse wavelength division multiplexing (CWDM) systems.

REFERENCES:
patent: 6307668 (2001-10-01), Bastien et al.
patent: 6657778 (2003-12-01), Motoshima et al.
patent: 6657780 (2003-12-01), Choa
patent: 6747793 (2004-06-01), Flanders
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patent: 7075712 (2006-07-01), Kinoshita et al.
patent: 7126747 (2006-10-01), Lee
patent: 2003/0179440 (2003-09-01), Foursa et al.

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