Optical sensors using chaotic correlation fiber loop ring down

Lingzhen Yang*, Jianjun Yang, Yi Yang, Zongwei Zhang, Juanfen Wang, Zhaoxia Zhang, Pingping Xue, Yongkang Gong, Nigel Copner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (SciVal)


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.

Original languageEnglish
Pages (from-to)2031-2037
Number of pages7
JournalOptics Express
Issue number3
Publication statusPublished - 06 Feb 2017
Externally publishedYes


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