Fiber Optic Displacement Sensor for Temperature Measurement
Document Type
Article
Publication Date
1-1-2012
Abstract
A simple design of a temperature sensor is proposed and demonstrated using a fiber optic displacement sensor based on an intensity modulation technique. The proposed sensor uses a plastic optical fiber (POF)-based coupler as a probe in conjunction with a flat surface aluminum rod as a target. The aluminum rod is placed within the linear range of the sensor's displacement curve, which is from 0 to 1400 μm. The sensor is capable of measuring the temperature of an aluminum rod ranging from 42 °C to 90 °C with a measured sensitivity of 0.0044 mV/°C, with a linearity of more than 98% and a resolution of 2.4°C. The proposed sensor also shows a high degree of stability and good repeatability. The simplicity of design, accuracy, flexible dynamic range, and the low cost of fabrication are favorable attributes of the sensor and beneficial for real-field applications.
Keywords
Fiber optic, Fiber optic displacement sensor, Temperature fiber sensor
Divisions
fac_eng,PHYSICS
Funders
University of Malaya: PPP Grant PV033/2011A,HIR-MOHE Grant D0000009-16001
Publication Title
IEEE Sensors Journal
Volume
12
Issue
5
Publisher
Institute of Electrical and Electronics Engineers (IEEE)