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Updated: Jun 11, 2026
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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
Simulation of a localized surface-plasmon-resonance-based fiber optic temperature sensor.
Sachin K Srivastava1, Banshi D Gupta
1Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India.
Summary
This study presents a novel fiber optic temperature sensor utilizing gold nanoparticles and dielectric materials. The sensor demonstrates high sensitivity and a wide temperature range, with CdGeP(2) showing the best performance.
Area of Science:
- Photonics
- Nanotechnology
- Materials Science
Background:
- Fiber optic sensors offer remote and precise measurements.
- Localized surface plasmon resonance (LSPR) in metal nanoparticles is sensitive to refractive index changes.
Purpose of the Study:
- To analyze a fiber optic temperature sensor based on LSPR of gold nanoparticles.
- To evaluate various dielectric materials for enhanced temperature sensing.
Main Methods:
- Simulations were performed on a fiber optic sensor design incorporating gold nanoparticles in a dielectric layer.
- Spectral interrogation method was used to analyze the sensor's response.
- Sensitivity was determined for different dielectric materials, including CdGeP(2).
Main Results:
- The sensor's performance was analyzed using simulations.
- CdGeP(2) was identified as the optimal dielectric material, yielding maximum sensitivity.
- The sensor exhibits a wide temperature sensing range due to high melting point materials.
Conclusions:
- The proposed fiber optic temperature sensor is compact, lightweight, and highly sensitive.
- It offers a wide operational temperature range, making it suitable for various applications.
- The use of LSPR with gold nanoparticles and suitable dielectric materials enhances sensing capabilities.
