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Intensity-Modulated Polymer Optical Fiber-Based Refractive Index Sensor: A Review
Chuanxin Teng1, Rui Min2, Jie Zheng3
1Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
Sensors (Basel, Switzerland)
|January 11, 2022
Summary
This review summarizes recent advancements in polymer optical fiber (POF) sensors for refractive index (RI) measurement. These intensity modulation-based sensors offer a cost-effective and flexible solution for optical instruments and biochemical sensing.
Area of Science:
- Optoelectronics
- Fiber Optics
- Chemical Sensing
Background:
- Refractive index (RI) measurement is crucial for optical instruments and biochemical sensing.
- Polymer optical fiber (POF) sensors offer advantages like low cost, flexibility, and ease of use.
Purpose of the Study:
- To review recent developments in intensity modulation-based POF RI sensors.
- To present and compare the performance of various POF sensor structures.
Main Methods:
- Summarizing recent literature on POF RI sensors.
- Introducing POF materials and intensity modulation principles.
- Detailing RI sensing performance of tapered, bent, and side-polished structures.
Main Results:
- Intensity modulation-based POF RI sensors are effective for liquid analysis.
- Different sensor structures (tapered, bent, side-polished) exhibit varying sensing performances.
- POF sensors are suitable for visible wavelength applications.
Conclusions:
- POF-based intensity modulation sensors are a promising technology for RI sensing.
- Structural modifications significantly impact sensor performance.
- These sensors have broad applicability in optical instrumentation and biochemical detection.
