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Optical sensors using chaotic correlation fiber loop ring down

Yang, Lingzhen, Yang, Jianjun, Yang, Yi, Zhang, Zongwei, Wang, Juanfen, Zhang, Zhaoxia, Xue, Pingping, Gong, Yongkang and Copner, Nigel 2017. Optical sensors using chaotic correlation fiber loop ring down. Optics Express 25 (3) , pp. 2031-2037. 10.1364/OE.25.002031

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We have proposed a novel optical sensor scheme based on chaotic correlation fiber loop ring down (CCFLRD). In contrast to the well-known FLRD spectroscopy, where pulsed laser is injected to fiber loop and ring down time is measured, the proposed CCFLRD uses a chaotic laser to drive a fiber loop and measures autocorrelation coefficient ring down time of chaotic laser. The fundamental difference enables us to avoid using long fiber loop as required in pulsed FLRD, and thus generates higher sensitivity. A strain sensor has been developed to validate the CCFLRD concept. Theoretical and experiment results demonstrate that the proposed method is able to enhance sensitivity by more than two orders of magnitude comparing to the existing FLRD method. We believe the proposed method could find great potential applications for chemical, medical, and physical sensing.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Optical Society of America
ISSN: 1094-4087
Date of Acceptance: 7 January 2017
Last Modified: 05 Aug 2022 01:46

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