Demonstration of a microwave spectrum analyzer based ontime-domain optical processing in fiberRobert E. Saperstein, Dmitriy Panasenko, and Yeshaiahu Fainman
نویسندگان
چکیده
We demonstrate a novel method for spectral analysis of microwave signals that employs time-domain processing in fiber. We use anomalous dispersion in single-mode fiber to perform a Fresnel transform followed by a matched amount of dispersion-compensating fiber to perform an inverse Fresnel transform of an ultrashort pulse. After the Fresnel-transformed waveform is modulated by the microwave signal, the waveform at the output of the dispersion-compensating fiber represents the ultrashort pulse convolved with the microwave spectrum. An experimental system for spectral analysis of microwave signals in the range 6–21 GHz is demonstrated. © 2004 Optical Society of America OCIS codes: 070.1170, 320.7090, 300.6370.
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