1 February 2013 Optical approach for measuring unknown microwave frequency with improved sensitivity
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Abstract
We propose a novel photonic technique for unknown microwave frequency measurement by employing an optical group delay line. The 7-bit optical delay line composed of several magneto-optical switches and 1.6 km single-mode fiber is designed as a tunable dispersive medium in the measurement system. In our scheme, the measurable frequency range of 1 to 20 GHz with a measurement error less than ±40  MHz was demonstrated experimentally. Also, we studied the sensitivity of the whole measurement system, and the minimum detectable power reached −50  dBm .
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Shu Hu, Shu Hu, Xiuyou Han, Xiuyou Han, Pengsheng Wu, Pengsheng Wu, Yiying Gu, Yiying Gu, Jingjing Hu, Jingjing Hu, Mingshan Zhao, Mingshan Zhao, } "Optical approach for measuring unknown microwave frequency with improved sensitivity," Optical Engineering 52(2), 025002 (1 February 2013). https://doi.org/10.1117/1.OE.52.2.025002 . Submission:
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