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US 11,159,245 B2Granted
Methods and apparatus for cavity angle tuning for operating condition optimization
AssigneeRaytheon Company
InventorsAndrew Kowalevicz, Benjamin P. Dolgin, Gary M. Graceffo
Life of this patent
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Abstract
Apparatus, systems, and methods include leveraging the angular dependence of the angle of arrival of the incoming optical signal at an optical resonator and the output response signal to adjust the operating condition of the optical resonator. The optical resonator is dynamically tuned by rotating the optical resonator to optimize signal-to-noise ratio or other parameters for different modulation formats of the incoming optical signal or other different operating conditions.
Claims20
An optical receiver comprising:
- an optical resonator assembly including at least one optical resonator and at least one actuator coupled to the at least one optical resonator and configured to rotate the at least one optical resonator in response to a control signal, the at least one optical resonator being configured to receive an input optical signal, to accumulate optical signal energy inside the at least one optical resonator based at least in part on the input optical signal, and to produce an intensity modulated output optical signal, the intensity modulation of the output optical signal being representative of a modulation of the input optical signal;
- a detector configured to detect the intensity modulated output optical signal and to identify the modulation of the input optical signal based at least in part on the intensity modulation of the output optical signal;
- and
- a controller coupled to the detector and to the optical resonator assembly, the controller being configured to provide the control signal to control the at least one actuator to rotate the at least one optical resonator to tune the at least one optical resonator to a selected operating condition.
1 more element
A method of demodulating a modulated optical signal, the method comprising:
- receiving the modulated optical signal with at least one optical resonator;
- accumulating optical signal energy inside the at least one optical resonator based at least in part on the modulated optical signal to produce an intensity modulated output optical signal, an intensity modulation of the output optical signal being representative of the modulation of the modulated optical signal;
- rotating the at least one optical resonator to tune the at least one optical resonator to a selected operating condition, the intensity modulation of the output optical signal being dependent on the operating condition of the at least one optical resonator;
- detecting the intensity modulated output optical signal;
- and
- identifying the modulation of the modulated optical signal based at least in part on the intensity modulation of the output optical signal.
3 more elements
Dependencies are inferred from the claim text.