Controlling an optical source using a beat frequency

Details Controlling an optical source using a beat frequency Controlling an optical source using a beat frequency

2006-07-11

2006-07-11

Wong, Don (Department: 2821)

Coherent light generators

Particular beam control device

Optical output stabilization

C331S018000, C331S040000, C331S041000

Reexamination Certificate

active

07075957

ABSTRACT:
An apparatus and method of controlling an optical signal includes superimposing at least one optical reference signal and the optical signal to obtain at least one interference signal having an actual beat frequency, and pre-selecting one or more of the at least one interference signals using a predetermined bandwidth and a filter characteristic that is asymmetric with respect to an actual frequency of the optical signal, to determine a position of the optical signal relative to the at least one optical reference signal.

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“Wide-Span Optical Frequency Comb Generator For Accurate Optical Frequency Difference Measurement”, Motonobu Kourogi et al., IEEE Journal of Quantum Electronics, Vo. 29, No. 10, pp. 2693-2699, Oct. 29, 1993.

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