OPTICAL VARIABLE-GAIN AMPLIFIER Russian patent published in 2002 - IPC

Abstract RU 2191478 C2

FIELD: fiber-optic engineering. SUBSTANCE: amplifier designed for operation in wavelength multiplexing mode is made in the form of annular cavity wherein amplifying member output is coupled with series-connected optical circulator and phase grating. Narrow- band signal reflected from phase grating is supplied by means of circulator over feedback circuit through attenuation section to amplifying member input. EFFECT: preventing noise effects caused by nonlinearity of transmitting fiber. 10 cl, 2 dwg

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RU 2 191 478 C2

Authors

Krummrikh Peter

Dates

2002-10-20—Published

1998-08-27—Filed