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Optical Engineering

Optical approach for measuring unknown microwave frequency with improved sensitivity
Author(s): Shu Hu; Xiuyou Han; Pengsheng Wu; Yiying Gu; Jingjing Hu; Mingshan Zhao
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Paper 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 .

Paper Details

Date Published: 1 February 2013
PDF: 6 pages
Opt. Eng. 52(2) 025002 doi: 10.1117/1.OE.52.2.025002
Published in: Optical Engineering Volume 52, Issue 2
Show Author Affiliations
Shu Hu, Dalian Univ. of Technology (China)
Xiuyou Han, Dalian Univ. of Technology (China)
Pengsheng Wu, Dalian Univ. of Technology (China)
Yiying Gu, Dalian Univ. of Technology (China)
Jingjing Hu, Dalian Univ. of Technology (China)
Mingshan Zhao, Dalian Univ. of Technology (China)

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