Optical amplifying repeater

Details Optical amplifying repeater Optical amplifying repeater

1988-09-01

1989-12-12

Sikes, William L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455616, 350 9616, G02B 600

Patent

active

048863343

ABSTRACT:
In an optical amplifying repeater, an input signal light which is propagated through a first transmission optical fiber is divided by an optical divider into a plurality of signal lights. Each of the signal lights is amplified in a corresponding optical amplifier among a plurality of optical amplifiers. The signal lights thus amplified are combined in an optical coupler to supply a second transmission optical fiber with a combined signal light. At least one of the optical amplifiers are controlled in its amplification gain so that a level of the combined signal light is held to be a predetermined value.

REFERENCES:
patent: 4752120 (1988-06-01), Shimizu
Y. Iwamoto & H. Fukinuki, "Recent Advances in Submarine Optical Fiber Cable Transmission Systems in Japan", Journal of Lightwave Technology, vol. LT-3, No. 5, Oct. 1985, pp. 1005-1016.
J. C. Simon, "Semiconductor Laser Amplifier for Single Mode Optical Fiber Communications", J. Opt. Commun. 4 (1983)2, pp. 51-62.
"Optical System with Two Packaged 1.5 um Semiconductor Laser Amplifier Repeaters", Electronics Letters, Feb. 27, 1986, vol. 22, No. 5, pp. 253-255.

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