Highly Sensitive Refractive Index Sensor Based on a Cladding-Etched Thin-Core Fiber Sandwiched between Two Single-Mode Fibers

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2012 Chinese Physical Society and IOP Publishing Ltd
, , Citation Xu Ben et al 2012 Chinese Phys. Lett. 29 094203 DOI 10.1088/0256-307X/29/9/094203

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1 College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018

Dates

  1. Received 14 February 2012
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0256-307X/29/9/094203

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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