Optical transmission systems, optical receivers and...

Details Optical transmission systems, optical receivers and... Optical transmission systems, optical receivers and...

2005-12-27

2005-12-27

Tweel, John (Department: 2636)

Optical communications

Multiplex

Wavelength division or frequency division

C398S147000, C398S148000

Reexamination Certificate

active

06980741

ABSTRACT:
Optical systems of the present invention include an electrical signal distortion compensator configured to electrically distort an electrical signal to offset optical distortion imposed by a Fabry-Perot filter on an optical signal corresponding to the electrical signal. The electrical signal distortion compensator can be used in an optical transmitter to distort the electrical signal prior to optical transmission, or in an optical receiver after optical transmission. The distortion compensation can be performed on a baseband signal or a modulated electrical carrier. Likewise, the distortion compensator can be deployed in combination with an optical receiver, which allows the use of the F-P filter-optical receiver combination with transmitters and receivers that do not include F-P filters or distortion compensators. For example, F-P filter/receivers can be used in receiver terminals or regenerators, at various signal monitoring points including amplifier sites, in add/drop devices, and as an optical spectrum analyzer at the monitoring points and optical nodes.

REFERENCES:
patent: 5343322 (1994-08-01), Pirio et al.
patent: 5642215 (1997-06-01), Suzuki et al.
patent: 6118566 (2000-09-01), Price
patent: 6317241 (2001-11-01), Marcerou
patent: 6577423 (2003-06-01), Price

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