Method of wavelength conversion and wavelength converter

Optical communications – Optical repeater system – Regenerative

Reexamination Certificate

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Details

C398S175000, C398S152000, C398S141000, C398S158000, C398S159000, C398S157000, C398S147000, C398S148000, C398S149000, C398S150000, C359S332000, C359S326000, C359S333000, C359S344000, C359S327000, C359S328000, C359S329000, C385S001000, C385S122000, C385S123000, C385S004000, C385S005000, C385S011000, C385S014000, C385S015000

Reexamination Certificate

active

07379677

ABSTRACT:
The wavelength converter comprises (1) an optical multiplexer for multiplexing an amplitude-modulated first light and reference light, which is continuous light having a wavelength different from the wavelength of the first light, (2) an optical fiber for propagating the multiplexed light therethrough to generate a third light by a non-linear optical phenomenon, and (3) an optical filter having a pass wavelength range set such that a pulse time width of the third light is 20% or more narrower than a pulse time width of the first light after the third light has passed through the optical filter, or (3′) an optical filter having a pass wavelength range set such that a cross point of an eye pattern of the third light is lower than a cross point of an eye pattern of the first light after the third light has passed through the optical filter.

REFERENCES:
patent: 6043927 (2000-03-01), Islam
patent: 6330104 (2001-12-01), Kim et al.
patent: 6347174 (2002-02-01), Onishi et al.
patent: 6987607 (2006-01-01), Watanabe
patent: 2002-514322 (2002-05-01), None
patent: 2002-296630 (2002-10-01), None
patent: WO99/10770 (1999-03-01), None

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