Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor

Jesse Zheng

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Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor

机译：Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor

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摘要

A practical double-sensor multiplexed fiber optic displacement sensor is reported. The sensor is based on the principles of optical frequency-modulated continuous-wave (FMCW) interference and frequency-division multiplexing. The beat signals from the individual sensors are assigned in the frequency domain and separated with different electrical bandpass filters. The displacements of the targets can be determined simultaneously by detecting the phase shifts of the corresponding beat signals. The cross talks between the individual sensors are analyzed algebraically and with a phasor diagram. An accuracy of 0.05 (mu)m in a dynamic range of 1000 (mu)m is achieved.

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来源
《Optical Engineering》 |2005年第8期|084401-1-084401-6-0|共6页
作者
Jesse Zheng;
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作者单位

Photon Tech 1980 E51 Avenue Vancouver, British Columbia V5P 1VP Canada;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
fiber optic sensors; interferometry; multiplexing; tunable lasers; signal processing;

Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor

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