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Light sensor based on carbon tetrachloride-infiltrated side-hole fiber
Optics Express
|June 14, 2025
Summary
A novel optical fiber sensor using carbon tetrachloride demonstrates high sensitivity for measuring infrared laser power. This cost-effective sensor offers precise laser manipulation and modulation capabilities.
Area of Science:
- Photonics
- Optical Sensors
- Fiber Optics
Background:
- Optical sensors are crucial for precise measurement in various scientific and industrial applications.
- Developing high-sensitivity, cost-effective sensors remains an active area of research.
Purpose of the Study:
- To propose and demonstrate a high-sensitivity light sensor based on side-hole optical fiber.
- To investigate the sensor's performance for infrared laser light intensity measurement.
Main Methods:
- Utilizing a side-hole optical fiber selectively filled with carbon tetrachloride.
- Employing a fusion splicer and selective glue coating for liquid filling.
- Analyzing resonant dips in the transmission spectrum caused by mode coupling.
Main Results:
- Achieved a temperature sensitivity of up to 46 nm/°C due to changes in carbon tetrachloride's refractive index.
- Measured infrared laser light intensity with a sensitivity of 0.114 nm/(mW/cm²).
Conclusions:
- The proposed sensor offers high sensitivity, ease of fabrication, and cost-effectiveness.
- It shows significant potential for high-precision laser power measurement, manipulation, modulation, and switching.
