Apparatus for regenerating all-optical signal and method...

Optical communications – Transmitter and receiver system – Including synchronization

Reexamination Certificate

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C398S159000, C385S024000

Reexamination Certificate

active

07085498

ABSTRACT:
Disclosed are an apparatus for regenerating a distorted optical signal through reamplification, regenerating, and retiming processes in an optical communication network and a method thereof. The apparatus includes an optical clock generation section for generating an optical clock signal of a specified frequency, an optical signal sampling section for sampling a distorted non-return-to-zero (NRZ) optical signal in synchronization with the clock signal from the optical clock generation section, an optical signal regenerating section for regenerating an output signal of the sampling section, and a return-to-zero (RZ)/NRZ conversion section for converting the optical signal reshaped by the optical signal regenerating section into an NRZ optical signal. The apparatus overcomes the limitations of the signal processing speed produced in the electric 3R type regenerator, and enable the signal regenerating to be performed without the necessity of an optical clock extraction apparatus.

REFERENCES:
patent: 6282007 (2001-08-01), Roberts
patent: 6396607 (2002-05-01), Cao
patent: 2003/0169473 (2003-09-01), Cotter et al.
patent: 2004/0208610 (2004-10-01), Grosz et al.
patent: 08496622 (1998-06-01), None
patent: 0901245 (1999-03-01), None
patent: WO 02/29981 (2002-04-01), None
Patent Application Publication No. US 2001/0050794; Publication Date: Dec. 13, 2001; “Device for Regenerating Optical Signals,” Patrick Brindel et al; 15 pages.

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