Fiber optic link amplitude stabilization circuit

Details Fiber optic link amplitude stabilization circuit Fiber optic link amplitude stabilization circuit

1993-01-19

1995-05-30

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359195, 359188, H04B 1012, H04B 1004, H04B 1006

Patent

active

054207118

ABSTRACT:
An amplitude stabilization circuit for fiber optic links that holds the RF gain of the link constant despite optical parameter variations. A voltage variable attenuator which attenuates DC and RF equally is placed between the link photodetector and a load resistor. The voltage on the resistor is compared with a reference voltage, and the comparison result is an error signal used in a feedback loop to control the attenuation of the attenuator.

REFERENCES:
patent: 5210633 (1993-05-01), Trisno

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