Bias control and method for electro-optic modulators

Details Bias control and method for electro-optic modulators Bias control and method for electro-optic modulators

1991-11-15

1994-08-30

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359181, 359187, H04B 1004

Patent

active

053433246

ABSTRACT:
An electro-optical modulation system comprising an optical modulator for pulse-modulating an incoming light beam in response to a pulsed RF input signal and to a bias signal and for producing a pulse-modulated optical output which is characterized by a plurality of enveloped pulses, optical detector for producing an electrical signal which is representative of the output from the optical modulator, average detecting device for producing pulse envelope signals which are representative of the envelopes of the pulses, and a bias control circuit, using a plurality of pulse envelop signals, for producing the bias signal as a function of the pulse envelopes.

REFERENCES:
patent: 3780296 (1978-12-01), Waksberg et al.
patent: 4071751 (1978-01-01), Waksberg
patent: 4253734 (1981-03-01), Komurasaki et al.
patent: 4306142 (1981-12-01), Watanabe et al.
patent: 5003624 (1991-03-01), Terbrack et al.
R. H. Buckley, "A rugged twenty kilometer fiber optic link for 2 to 18 gigahertz communications", SPIE EO/Fiber-90, San Jose, Calif.
M. G. Lee et al., "New robust bias control method for optical communications," SPIE Proceedings, Optical and Digital GaAs Technologies for Signal-Processing Applications, vol. 1291, pp. 55-65, Apr. 1990.

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