Low noise, optical amplifier having post-amplification loss elem

Details Low noise, optical amplifier having post-amplification loss elem Low noise, optical amplifier having post-amplification loss elem

1991-12-19

1993-02-16

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359337, 372 33, A01S 305, G02B 626

Patent

active

051876108

ABSTRACT:
In an optical arrangement for amplifying an input lightwave signal by a predetermined amount to a desired output level, an optical amplifier is connected to a loss element. The optical amplifier is pumped by an amount exceeding a nominal amount wherein the nominal amount is the amount of pumping needed to attain the desired output level at the optical amplifier output. By attenuating the signal output from the optical amplifier, the loss element generates an output signal from the optical arrangement at the desired output level. This optical arrangement is characterized by an improved noise performance (noise figure) over standard optical amplifiers.

REFERENCES:
patent: 3317848 (1967-05-01), Keyes
patent: 3774120 (1973-11-01), Ross
patent: 3949315 (1976-04-01), Zeidler
patent: 4947134 (1990-08-01), Olssan
patent: 4954786 (1990-09-01), Yamakawa et al.
patent: 4971417 (1990-11-01), Krinsky et al.
patent: 5067789 (1991-11-01), Hall et al.
Habbab et al, J. Lightwave Technol., vol. 9, #10 pp. 1321-1329, Oct. 1991.
S. Kobayashi et al., IEEE Spectrum, May 1984, "Semiconductor Optical Amplifiers," pp. 26-33.
S. Saito et al., Electronics Letters, May 10, 1990, vol. 26, No. 10, "Coherent Transmission Experiment over . . . , " pp. 669-671.
P. C. Becker, Laser Focus World, Oct. 1990, "Erbium-doped Fiber Makes Promising Amplifiers," pp. 197-203.
P. Urquhart, IEE Proceedings, vol. 135, Pt. J., No. 6, Dec. 1988, "Review of rare earth doped fibre . . . , " pp. 385-407.

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