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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
High-sensitivity temperature sensor based on an alcohol-filled photonic crystal fiber loop mirror
Wenwen Qian1, Chun-Liu Zhao, Shaoling He
1Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China.
Optics Letters
|May 5, 2011
Summary
A novel compact temperature sensor uses a fiber loop mirror and alcohol-filled photonic crystal fiber. This sensor achieves a high temperature sensitivity of 6.6 nm/°C, offering precise temperature monitoring capabilities.
Area of Science:
- Optoelectronics
- Fiber optics sensing
- Nanotechnology
Background:
- Fiber loop mirrors (FLMs) are versatile optical devices.
- Photonic crystal fibers (PCFs) offer unique light manipulation properties.
- Temperature sensing is crucial in various scientific and industrial applications.
Purpose of the Study:
- To propose and demonstrate a compact temperature sensor.
- To leverage the properties of FLMs and alcohol-filled PCFs for enhanced temperature sensitivity.
- To investigate the performance of the proposed sensor design.
Main Methods:
- Constructing a fiber loop mirror (FLM) integrated with an alcohol-filled high-birefringence photonic crystal fiber (PCF).
- Analyzing the interference spectrum generated by the FLM, focusing on resonant dips.
- Conducting experimental measurements to determine temperature sensitivity.
Main Results:
- The FLM output exhibits an interference spectrum sensitive to the refractive index changes of the filled alcohol.
- Simulation analysis predicted a high temperature sensitivity.
- Experimental results demonstrated a temperature sensitivity of up to 6.6 nm/°C using a 6.1-cm-long PCF.
Conclusions:
- A compact and effective temperature sensor based on FLM and alcohol-filled PCF has been successfully demonstrated.
- The sensor exhibits high temperature sensitivity, making it suitable for precise temperature measurements.
- This technology holds potential for advanced optical sensing applications.
