Method and system for reducing intra-channel nonlinear...

Details Method and system for reducing intra-channel nonlinear... Method and system for reducing intra-channel nonlinear...

2006-06-06

2006-06-06

Pascal, Leslie (Department: 2633)

Optical communications

Transmitter

Including compensation

C398S025000, C398S029000, C398S081000, C398S147000, C398S148000, C398S199000

Reexamination Certificate

active

07058314

ABSTRACT:
A system and method for reducing timing and amplitude jitter in trnasmission of Retrun-to-Zero modulated pulses is described. In the reduction of amplitude jitter the modulated pulses must be phase coherent. The method comprises the steps of measuring a total dispersion of a transmission fiber link, computing an optimal amount of pre-chirp to be added at an input of said transmission fiber link, computing an optimal amount of pre-chirp to be added at an output of said transmission fiber link, adding said optimal amount of pre-chirp to said input of said tranmisssion fiber link and adding said optimal amount of pre-chirp to said output of said tranmisssion fiber link. The system for reducing timing jitter in transmission of Return-to-Zero modulated pulses comprises means for measuring a total dispersion of a transmission fiber link, means for computing an optimal amount of pre-chirp to be added at an input of said transmission fiber link, means for computing an optimal amount of pre-chirp to be added at an output of said transmission fiber link, means for adding said optimal amount of pre-chirp to said input of said transmission fiber link and means for adding said optimal amount of pre-chirp to said output of said transmission fiber link.

REFERENCES:
patent: 5870213 (1999-02-01), Ishikawa et al.
patent: 6320687 (2001-11-01), Ishikawa
patent: 6832050 (2004-12-01), Clausen et al.
patent: 2003/0194242 (2003-10-01), Miyauchi et al.

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