Enhanced Refractive Index Sensor Using a Combination of a Long Period Fiber Grating and a Small Core Singlemode Fiber Structure

Authors

Qiang wu, Technological University DublinFollow
Hauping Chan, City University of Hong Kong
Jinhui Yuan, Beijing University of Posts and Telecommunications
Youqiao Ma, Technological University Dublin
Minwei Yang, Technological University Dublin
Yuliya Semenova, Technological University DublinFollow
Binbin Yan, Beijing University of Posts and Telecommunications
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

Measurement Science and Technology, 24 (2013) 094002

Abstract

An enhanced refractive index (RI) sensor based on a combination of a long period fiber grating (LPG) and a small core singlemode fiber (SCSMF) structure is proposed and developed. Since the LPG and SCSMF transmission spectra experience a blue and a red shift respectively as the surrounding RI (SRI) increases, the sensitivity is improved by measuring the separation between the resonant wavelengths of the LPG and SCSMF structures. Experimental results show that the sensor has a sensitivity of 1028 nm/SRI unit in the SRI range from 1.422 to 1.429, which is higher than individual sensitivities of either structure alone used in the experiment. Experimental results agree well with simulation results.

DOI

https://doi.org/10.1088/0957-0233/24/9/094002

Recommended Citation

Wu, Q., Chan, H., Yuan, J., Ma, Y., Yang, M., Semenova, Y., Yan, B., Wang, P., Yu, C., and Farrell, G. Enhanced refractive index sensor using a combination of a long period fiber grating and a small core singlemode fiber structure. Measurement Science and Technology, 24 (2013) 094002. doi:10.1088/0957-0233/24/9/094002