Gain equalizer and optical amplifying transmission line

Details Gain equalizer and optical amplifying transmission line Gain equalizer and optical amplifying transmission line

1998-03-06

1999-11-02

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Plural

385 27, 385 48, 385141, 372 70, 359333, G02B 628

Patent

active

059785292

ABSTRACT:
This invention provides the gain equalizer positioned to an optical amplifying transmission line for equalizing gains of said optical amplifying transmission line, comprising a plurality of first optical filters varying transmittance periodically in at least predetermined wavelength range, and one or more second optical filters that their transmittance peaks at a wavelength substantially coinciding to the predetermined transmittance bottom wavelength of the first optical filters and decreases in a predetermined range at both side of the predetermined transmittance bottom wavelength.

REFERENCES:
patent: 5276534 (1994-01-01), Olshansky
patent: 5436760 (1995-07-01), Nakabayashi

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