Wide-range temperature measurement using a right-angle plastic optical fiber SPR sensor
Abstract
This paper proposes a temperature sensor based on surface plasmon resonance (SPR) technology utilizing a right-angle plastic optical fiber (POF). The sensor is fabricated by hot pressing the fiber to form two planar surfaces with a right-angle cross-section, on which Ag/PDMS composite films are deposited. Experimental results demonstrate that the sensor achieves a temperature sensitivity of up to −1.371nm/ ∘ C within a broad temperature range from −40 ∘ C to 96°C, which is superior to most existing fiber-optic temperature sensors. It also exhibits good repeatability and cycling stability during cooling/heating processes. The sensor is cost-effective and features a straightforward fabrication process, making it suitable for wide-range temperature-monitoring applications.
Fields of Study & Subjects
Advanced Fiber Optic Sensors
Analytical Chemistry and Sensors
Mechanical and Optical Resonators
Publication details
- Journal / source
- Applied Optics
- Publisher
- Optica Publishing Group
- Volume
- 65
- Issue
- 8
- Pages
- 2566–2566
- Publication date
- 11 February 2026
- Language
- EN