Optical amplification

Details Optical amplification Optical amplification

1988-07-15

1990-05-08

Arnold, Bruce Y.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

350401, 330 43, 372 27, 455609, 455616, G02B 530, G02F 100

Patent

active

049232916

ABSTRACT:
An optical amplification method or system for an optical communication system which transmits signal light from the transmitting side to the receiving side via an optical transmission medium formed by an optical fiber or space. In accordance with the present invention, the signal light entered a certain state of polarization in at least one part of the transmitting side, the receiving side and the optical transmission medium is separated into two orthogonal polarized waves by a polarizing beam coupler/splitter. The two polarized waves are amplified by optical amplifiers disposed in correspondence to their state of polarization, respectively. The amplified orthogonal polarized waves are combined together by another polarizing beam coupler/splitter.

REFERENCES:
patent: 4019151 (1977-04-01), Brueckner et al.
patent: 4186353 (1980-01-01), Boutineau
patent: 4364014 (1982-12-01), Gray
G. Grobkopf et al., "Optical Amplifier Configurations with Low Polarization Sensitivity", Electronic Letters, Dec. 3, 1987, vol. 23, No. 25, pp. 1387-1388.

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