Optical communication transmission system with optical control o

Details Optical communication transmission system with optical control o Optical communication transmission system with optical control o

1992-05-18

1993-09-21

Lee, John D.

Coherent light generators

Particular beam control device

Producing plural wavelength output

372 22, H01S 310

Patent

active

052475298

ABSTRACT:
An optical system includes an optical amplifier having a laser active substance and a first laser that generates pump light at a first wavelength for the laser active substance, a second laser which generates light a second wavelength selected so that the light of the second wavelength can be amplified in the optical amplifiers, a first coupler for coupling the light of the second wavelength into the optical amplifier, a third laser which generates light at a third wavelength, and a second coupler for coupling light of the third wavelength into the optical amplifier. The wavelength of the light generated by the third laser is selected so that amplification of the light of the second wavelength on the basis of the pump light can be controlled as a function of the intensity of the light generated by the third laser.

REFERENCES:
patent: 4726012 (1988-02-01), Amadieu et al.
patent: 5138483 (1992-08-01), Grasso et al.
patent: 5140456 (1992-08-01), Huber
patent: 5140598 (1992-08-01), Tagawa et al.
patent: 5161050 (1992-11-01), Grasso et al.
Wedding et al., "5 GBIT/S Transmission over 146 KM using Erbium-Doped Fibre Amplifier," ECOC '89, 15th European Conference on Optical Communication, Proceedings, vol. 1, 1989, Sweden, pp. 86-89.
Millar et al., "Efficient Up-Conversion Pumping at 800nm of an Erbium-Doped Fluoride Fibre Laser Operating at 850nm," Electronics Letters, vol. 26, No. 22, Oct. 25, 1990, pp. 1871-1873.
Miniscalco, "Erbium-Doped Glasses for Fiber Amplifiers at 1500nm," Journal of Lightwave Technology, vol. 9, No. 2, Feb. 1991, pp. 234-250.

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