Analog compensation system for linear lasers

Coherent light generators – Particular beam control device – Having particular beam control circuit component

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372 31, 455610, H01S 310

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active

050124757

ABSTRACT:
An error compensation system is described which provides a linear laser signal. The error compensation system includes a first high power linear laser which is used to drive a signal onto an optical fiber. The signal on the optical fiber is tapped to provide a signal representative of the signal on the fiber. This tapped signal is compared with the original modulated signal to produce a control signal indicative of any error signal on the fiber. This control signal is inverted and used to drive a lower power laser which supplies an optical output indicative of the inverted error. By properly combining the original signal with an inverted error signal, a corrected signal may be detected from the fiber for distribution.

REFERENCES:
patent: 3202928 (1965-08-01), Prior
patent: 3457516 (1969-07-01), Blalock
patent: 4075474 (1978-02-01), Straus et al.
patent: 4165496 (1979-08-01), Di Domenico, Jr.
patent: 4611352 (1986-09-01), Fujito et al.
patent: 4672192 (1987-06-01), Muka et al.
patent: 4733398 (1988-03-01), Shibagaki et al.
Straus, Jozef, "Linearized Transmitters for Analog Fiber Links", Laser Focus, Oct. 1978, pp. 54-61.

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