Share Email Print

Optical Engineering

Dual-parameter optical fiber sensor based on intermodal interferometer with an inline embedded fiber Bragg grating
Author(s): Panpan Luan; Zhengrong Tong; Ye Cao; Weihua Zhang
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

A dual-parameter optical fiber sensor is proposed and demonstrated. It is based on an intermodal interferometer (IMI) with an inline embedded fiber Bragg grating (FBG). The IMI is formed by cascading a taper structure and a spherical-shaped structure through a segment of a single-mode fiber. Due to the different wavelength shifts of the IMI and FBG to temperature and liquid level, simultaneous measurement can be achieved. Experimental results indicate a good linear relation between the wavelength shift and external parameters (temperature and liquid level). The sensitivities of 0.066  nm/°C and −0.133  nm/mm are achieved experimentally for temperature and liquid level, respectively. The interesting properties of the sensor include good operation linearity, compact size, and high sensitivity.

Paper Details

Date Published: 9 March 2015
PDF: 5 pages
Opt. Eng. 54(3) 036104 doi: 10.1117/1.OE.54.3.036104
Published in: Optical Engineering Volume 54, Issue 3
Show Author Affiliations
Panpan Luan, Tianjin Univ. of Technology (China)
Zhengrong Tong, Tianjin Univ. of Technology (China)
Ye Cao, Tianjin Univ. of Technology (China)
Weihua Zhang, Tianjin Univ. of Technology and Education (China)

© SPIE. Terms of Use
Back to Top