Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1995-08-01
1998-03-03
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250205, 372 18, 359184, H01S 3098
Patent
active
057238561
ABSTRACT:
An electro-optical oscillator includes an electro-optical modulator having an electrical input port that accepts an electrical control signal and an optical output port. The electro-optical modulator is operable to generate at the optical output port an optical signal that oscillates at a frequency related to the electrical control signal. The oscillator also includes a photodetector that converts a portion of the optical signal from the optical output port of the electro-optical modulator to an electrical signal and provides the electrical signal to the electrical input port of the electro-optical modulator as the electrical control signal. An open loop gain of a feedback loop including the optical output port, the photodetector and the electrical input port is greater than one.
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Maleki Lutfollah
Yao Xiaotian Steve
California Institute of Technology
Lee John R.
Westin Edward P.
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