| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Highly Sensitive Refractive Index Sensor Based on a Cladding-Etched Thin-Core Fiber Sandwiched between Two Single-Mode Fibers |
| XU Ben**, LI Yi, DONG Xin-Yong, JIN Shang-Zhong, ZHANG Zai-Xuan |
| College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018 |
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| Cite this article: |
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XU Ben, LI Yi, DONG Xin-Yong et al 2012 Chin. Phys. Lett. 29 094203 |
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Abstract A refractive index (RI) sensor based on a cladding-etched thin-core single-mode fiber (TCSMF) sandwiched between two single-mode fibers is demonstrated. The experimental results show that the sensitivity, within the RI range of 1.333–1.340, is enhanced at least 6 times by etching. It increases with the surrounding RI and reaches 857.5 nm/RIU at RI of 1.3684, and it can be expected to be higher with the decrease of the cladding diameter of the TCSMF.
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Received: 14 February 2012
Published: 01 October 2012
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