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论文类型：期刊论文

发表时间：2013-02-01

发表刊物：OPTICAL ENGINEERING

收录刊物：SCIE

卷号：52

期号：2

ISSN号：0091-3286

关键字：microwave frequency measurement; microwave photonics; optical delay line; tunable dispersive medium

摘要：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. (C) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.OE.52.2.025002]