Optical communications system employing fiber-optic amplifiers a

Details Optical communications system employing fiber-optic amplifiers a Optical communications system employing fiber-optic amplifiers a

1993-02-19

1994-07-26

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359160, H01S 3103

Patent

active

053330897

ABSTRACT:
An optical communications system includes an optical transmitter equipped with a semiconductor laser for generating a light signal and a light waveguide path for transmitting the generated light signal to an optical receiver in whose light waveguide path at least one fiber-optic amplifier is included. The fiber-optic amplifier is equipped with an amplifying light waveguide piece. The optical transmitter includes a control device having a reference waveguide piece, which regulates an emission wavelength of the semiconductor laser in dependence on absorption of the light signal in the reference light waveguide piece. The reference waveguide piece has a maximum in absorption at a wavelength at which the amplifying light waveguide piece of the at least one fiber-optic amplifier has a maximum in emission.

REFERENCES:
patent: 4307469 (1981-12-01), Casper et al.
patent: 5077816 (1991-12-01), Glomb et al.
patent: 5088095 (1992-02-01), Zirngibl
patent: 5128800 (1992-07-01), Zirngibl
patent: 5214524 (1993-05-01), Shigematsu et al.
Zirngibl, "All-Optical Remote Gain Switching in Er-Doped Fibre Amplifiers," Electronic Letters, vol. 27, No. 13, Jun. 20, 1991, pp. 1164-1166.
Giles, C. R., "Propagation of Signal and Noise in Concatenated Erbium-Doped Fiber Optical Amplifiers," Journal of Lightwave Technology, vol. 9, No. 2, Feb. 1991, pp. 147-154.
Giles, C. R., "Modeling Erbium-Doped Fiber Amplifiers", Journal of Lightwave Technology, vol. 9, No. 2, Feb. 1991, pp. 271-283.

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