Control system for an optical modulator

Details Control system for an optical modulator Control system for an optical modulator

1981-10-06

1984-07-17

Sikes, William L.

Coherent light generators

Particular component circuitry

Optical pumping

372 26, 372 29, 372 28, 332 751, G02F 103

Patent

active

044602499

ABSTRACT:
A control system for a laser-intensity-modulator system to maintain the modulated component of the output beam at a constant amplitude. The electro-optical modulator has a resonant driving circuit supplied by a voltage controlled oscillator. A portion of the output beam is detected and a control signal representative of the amplitude of the modulated component is derived and supplied to the oscillator in addition to the normal bias voltage which sets the nominal frequency. This stabilizes the amplitude of the modulated component in the output beam.

REFERENCES:
patent: 3586997 (1971-06-01), Kinsel
patent: 3594660 (1971-07-01), Huggett
patent: 3743969 (1973-07-01), Hutchings
patent: 4068197 (1978-01-01), Yamazaki et al.
patent: 4071751 (1978-01-01), Waksberg
patent: 4221960 (1980-09-01), Maeda et al.

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