Document Type

Article

Rights

This item is available under a Creative Commons License for non-commercial use only

Publication Details

IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 25, NO. 3, FEBRUARY 1, 2013

DOI: 10.1109/LPT.2012.2234449

Abstract

An optical microfiber coupler-based refractive index sensor is proposed and experimentally demonstrated in this letter. A microfiber coupler with a minimum diameter of 2.5 µm and a uniform waist with a length of 2 mm is fabricated and used for sensing surrounding refractive index. Both theoretical and experimental results have shown that the spectral response of the proposed microfiber coupler is highly sensitive to the surrounding refractive index over the range from 1.3340 to 1.3800. An average sensitivity of 2723 nm/RIU over this entire refractive index range has been achieved experimentally. Furthermore, for the refractive index range from 1.3340 to 1.3515,

DOI

10.1109/LPT.2012.2234449

Share

COinS