Transponder and wavelength division-multiplexing optical...

Details Transponder and wavelength division-multiplexing optical... Transponder and wavelength division-multiplexing optical...

2006-03-28

2006-03-28

Phan, Hanh (Department: 2638)

Optical communications

Optical repeater system

Regenerative

C398S176000, C398S173000, C398S155000, C398S154000, C398S202000, C375S376000, C375S374000, C375S375000, C327S156000, C327S159000, C331S00100A, C331S017000, C331S025000, C331S00100A

Reexamination Certificate

active

07020401

ABSTRACT:
A wavelength converter and a wavelength division-multiplexing optical communication apparatus automatically generate clock signals of a specified frequency that match send/receive digital signals and regenerates timing for the send/receive digital signals. The wavelength converter includes: optical/electrical signal converters (2A,2B) that convert input optical signals into electric digital signals; clock generator circuits (4A,4B) that automatically identify the transmission mode for digital signals and generate phase-synchronized clocks of a specified frequency that match the signal transmission mode; timing regeneration circuits (6A,6B) that regenerate clock timing for the digital signals based upon the phase-synchronized clocks from the clock generator circuits; and electric/optical converters (3A,3B) that convert the digital signals from the timing regeneration circuits into optical signals of a specified wavelength.

REFERENCES:
patent: 5987085 (1999-11-01), Anderson
patent: 6476953 (2002-11-01), Morkel
patent: 6501582 (2002-12-01), Chiou et al.
patent: 6804468 (2004-10-01), Ukaji et al.

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