Optical amplifier

Details Optical amplifier Optical amplifier

1995-07-14

1996-11-05

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

372 6, H01S 300

Patent

active

055723560

ABSTRACT:
The present invention provide an optical amplifier that excites a rare earth element dopant in a light transmitting medium with exciting light generated from a semiconductor laser such that the light propagating through the light transmitting medium is amplified, wherein drive power being supplied to drive the semiconductor laser is modulated with an AC component having a higher frequency than the frequency corresponding to the lifetime of the excited state of the ion of the rare earth element, and the drive current from the drive power has an amplitude which is higher than the threshold value of the semiconductor laser.

REFERENCES:
patent: 5155779 (1992-10-01), Avramopoulos et al.
patent: 5245690 (1993-09-01), Aida et al.
patent: 5268786 (1993-12-01), Matsushita et al.
patent: 5299048 (1994-03-01), Suyama

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