Tuning an optical resonator using a feedback signal...

Details Tuning an optical resonator using a feedback signal... Tuning an optical resonator using a feedback signal...

2011-07-12

2011-07-12

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C398S095000

Reexamination Certificate

active

07977622

ABSTRACT:
Various embodiments of the present invention relate to systems and methods for monitoring and tuning detector and modulator resonators during operation. Aspects of the present invention use DC balanced coding of data in optical signals tune and monitor the performance of a resonator. Whether the resonator is being used as a modulator or a detector, the intensity of the light coupled into the resonator is DC balanced and varies as a function of the data being transmitted. Average intensity variations of the light scattered from the resonator are converted into an electronic feedback signal, which is used to determine appropriate levels of thermal and electronic tuning applied to the resonator.

REFERENCES:
patent: 4592043 (1986-05-01), Williams
patent: 4715028 (1987-12-01), McMahon et al.
patent: 5351252 (1994-09-01), Toyama et al.
patent: 6295272 (2001-09-01), Feldman et al.

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