Microwave-to-Optical Conversion in WGM Resonators
NASA’s Jet Propulsion Laboratory
Saturday, November 01 2008
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Three-wave mixing, resonance, and low loss would result in high efficiency.
Microwave-to-optical frequency converters based on whispering-gallery-mode (WGM) resonators have been proposed as mixers for the input ends of microwave receivers in which, downstream of the input ends, signals would be processed photonically. A frequency converter as proposed (see figure) would exploit the nonlinearity of the electromagnetic response of a WGM resonator made of LiNbO3 or another suitable ferroelectric material. Up-conversion would take place by three-wave mixing in the resonator.
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