Optical laser amplifier combined with a spontaneous emission fil

Details Optical laser amplifier combined with a spontaneous emission fil Optical laser amplifier combined with a spontaneous emission fil

1994-12-30

1997-02-18

Hellner, Mark

Optical: systems and elements

Optical amplifier

Particular active medium

359337, 359108, 385 1, H01S 300, G02F 300

Patent

active

056046286

ABSTRACT:
Optical laser amplifier devices are formed integrally with spontaneous emission filters. The filtering function is accomplished by a laser amplifier whose output is employed to quench the signal generated by a laser. The quenching of the laser is performed in direct proportion to the stimulated emission component of the laser amplifier output signal. Since the stimulated emission component represents the output signal minus any spontaneous emission noise, the output signal generated by the laser is an amplified, inverted version of the input signal without the noise components. In the preferred embodiments, optical waveguides are employed to form the laser amplifier and the laser is either a horizontal cavity edge emitting laser or a vertical cavity surface emitting laser (VCSEL).

REFERENCES:
patent: 3431437 (1969-03-01), Kosonocky
patent: 4825442 (1989-04-01), Fitz
patent: 4902980 (1990-02-01), O'Meara
patent: 4945531 (1990-07-01), Suzuki
patent: 5155621 (1992-10-01), Takeda et al.
patent: 5218665 (1993-06-01), Grasso et al.
patent: 5283686 (1994-02-01), Huber
patent: 5283845 (1994-02-01), Ip
patent: 5309268 (1994-05-01), Nakamura et al.
patent: 5436759 (1995-07-01), Dijaili et al.

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