Microfiber sagnac interferometer for sensing applications
Quyen Dinh, Xuan
Shum, Perry Ping
Rutkowska, Katarzyna A.
Wolinski, Tomasz R.
Date of Issue2012
School of Electrical and Electronic Engineering
Research Techno Plaza
In this paper we propose an optical fiber-based refractive index and temperature sensor using an MNF (micro/nano fiber) inserted in a Sagnac loop interferometer . A portion of the PMF is tapered into a micro/nano dimension to increase the interactions between a guided signal and the surrounding environment. Experimental tests have demonstrated low response to temperature and high sensitivity to refractive index change of a liquid surrounding the MNF. It has been shown that the sensitivity of the setup under test to temperature decreases when a longer MNF is used. The maximum sensitivity for a refractive index achieved equals to 1068nm/RIU, which was obtained by a 4.7-mm long MNF with a diameter of 30um.
DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Photonics letters of Poland
© 2012 The Authors (Photonics Letters of Poland). This paper was published in Photonics Letters of Poland and is made available as an electronic reprint (preprint) with permission of Photonics Letters of Poland. The paper can be found at the following official DOI: [http://dx.doi.org/10.4302/plp.2012.4.05]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.