Fiber Refractometer Based on a Fiber Bragg Grating and Single-Mode–Multimode–Single-Mode Fiber Structure

Authors

Qiang wu, Technological University DublinFollow
Yuliya Semenova, Technological University DublinFollow
Binbin Yan, Beijing University of Posts and Telecommunications
Youqiao Ma, Technological University Dublin
Pengfei Wang, Technological University DublinFollow
Chongxiu Yu, Beijing University of Posts and Telecommunications
Gerald Farrell, Technological University DublinFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

Information Science

Publication Details

Optics Letters, vol. 36, no. 12, pp. 2197-2199, 2011

Abstract

A refractive index (RI) sensor based on a novel fiber structure that consists of a single-mode–multimode–singlemode (SMS) fiber structure followed by a fiber Bragg grating was demonstrated. The multimode fiber in the SMS structure excites cladding modes within output single-mode fiber (SMF) and recouple the reflected cladding Bragg wavelength to the input SMF core. By measuring the relative Bragg wavelength shift between core and cladding Bragg wavelengths, the RI can be determined. Experimentally we have achieved a maximum sensitivity of 7:33nm=RIU (RI unit) at RI range from 1.324 to 1.439.

DOI

https://doi.org/10.1364/OL.36.002197

Recommended Citation

Qiang Wu, Yuliya Semenova, Binbin Yan, Youqiao Ma, Pengfei Wang, Chongxiu Yu and Gerald Farrell, “Fiber refractometer based on a fiber Bragg grating and single-mode–multimode–single-mode fiber structure”, Optics Letters, vol. 36, no. 12, pp. 2197-2199, 2011. doi:10.1364/OL.36.002197