Optical amplifying apparatus

Details Optical amplifying apparatus Optical amplifying apparatus

1993-03-01

1994-03-15

Hellner, Mark

Optical: systems and elements

Optical amplifier

359337, 359110, H04J 1402

Patent

active

052950158

ABSTRACT:
An optical amplifying apparatus of the present invention has an optical amplifier for directly amplifying an input signal, and an optical splitter for reflecting a noise light which occurs in the amplifier and is supplied backward therefrom. An amount of the backward noise light is used to detect an S/N ratio of an output light or the like.

REFERENCES:
patent: 4918396 (1990-03-01), Halemave et al.
patent: 4945531 (1990-07-01), Suzuki
patent: 4947459 (1990-08-01), Nelson et al.

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