Optical amplifying apparatus

Details Optical amplifying apparatus Optical amplifying apparatus

1992-01-16

1993-04-13

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Particular pumping type

359187, 359194, 359239, H01L 3112, H01S 220

Patent

active

052027910

ABSTRACT:
An optical amplifying apparatus is disclosed which includes an optical amplifier for amplifying a signal light, a narrow-band optical filter for removing a spontaneous light emitted from the signal light, two photodetectors for detecting, transmitting and reflecting lights of the narrow-band optical filter, and a controller for controlling a gain of the optical amplifier by comparing intensities of the transmitting and reflecting lights in accordance with the detected signals supplied from the photodetectors.

REFERENCES:
patent: 4554510 (1985-11-01), Shaw et al.
patent: 4839614 (1989-06-01), Hill et al.
patent: 4856899 (1989-08-01), Iwaoka et al.
patent: 4947134 (1990-08-01), Olsson
patent: 5040033 (1991-08-01), Dutta et al.

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