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Thermo-optically tuned photonic resonators with concurrent electrical connection and thermal isolation

United States Patent

June 14, 2016
View the Complete Patent at the US Patent & Trademark Office
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A photonic resonator system is designed to use thermal tuning to adjust the resonant wavelength of each resonator in the system, with a separate tuning circuit associated with each resonator so that individual adjustments may be made. The common electrical ground connection between the tuning circuits is particularly formed to provide thermal isolation between adjacent resonators by including a capacitor along each return path to ground, where the presence of the capacitor's dielectric material provides the thermal isolation. The use of capacitively coupling necessarily requires the use of an AC current as an input to the heater element (conductor/resistor) of each resonator, where the RMS value of the AC signal is indicative of the amount of heat that is generated along the element and the degree of wavelength tuning that is obtained.
Lentine; Anthony L. (Albuquerque, NM), Kekatpure; Rohan Deodatta (Sunnyvale, CA), Zortman; William A. (Albuquerque, NM), Savignon; Daniel J. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
14/ 869,482
September 29, 2015
STATEMENT OF GOVERNMENT INTEREST This invention was developed under contract DE-AC04-94AL85000 between Sandia Corporation and the U. S. Department of Energy. The U.S. Government has certain rights in this invention.