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Optics Letters

Optics Letters


  • Vol. 29, Iss. 5 — Mar. 1, 2004
  • pp: 501–503

Demonstration of a microwave spectrum analyzer based on time-domain optical processing in fiber

Robert E. Saperstein, Dmitriy Panasenko, and Yeshaiahu Fainman  »View Author Affiliations

Optics Letters, Vol. 29, Issue 5, pp. 501-503 (2004)

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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) Fourier optics and signal processing : Analog optical signal processing
(300.6370) Spectroscopy : Spectroscopy, microwave
(320.7090) Ultrafast optics : Ultrafast lasers

Robert E. Saperstein, Dmitriy Panasenko, and Yeshaiahu Fainman, "Demonstration of a microwave spectrum analyzer based on time-domain optical processing in fiber," Opt. Lett. 29, 501-503 (2004)

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