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Updated: Mar 14, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
Published on: November 7, 2016
D-Shaped Polarization Maintaining Fiber Sensor for Strain and Temperature Monitoring
Hummad Habib Qazi1, Abu Bakar Mohammad2, Harith Ahmad3
1Faculty of Electrical Engineering, Universiti Teknologi Malaysia, UTM, Skudai, 81310 Johor, Malaysia. hqhummad3@live.utm.my.
Abstract:
A D-shaped polarization-maintaining fiber (PMF) as fiber optic sensor for the simultaneous monitoring of strain and the surrounding temperature is presented. A mechanical end and edge polishing system with aluminum oxide polishing film is utilized to perform sequential polishing on one side (lengthwise) of the PMF in order to fabricate a D-shaped cross-section. Experimental results show that the proposed sensor has high sensitivity of 46 pm/µε and 130 pm/°C for strain and temperature, respectively, which is significantly higher than other recently reported work (mainly from 2013) related to fiber optic sensors. The easy fabrication method, high sensitivity, and good linearity make this sensing device applicable in various applications such as health monitoring and spatial analysis of engineering structures.
Related Concept Videos
Measurements of Strain
Thermal Strain
Design Example: Strain Gauge Bridge or Wheatstone Bridge
Strain and Elastic Modulus
Stress-Strain Diagram
Temperature Dependent Deformation

