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Published on: September 30, 2019
Robustness analysis of an intensity modulated fiber-optic position sensor with an image sensor readout system
Johan Jason1, Hans-Erik Nilsson, Bertil Arvidsson
1Fiberson AB, Hudiksvall, Sweden. johan.jason@miun.se
Applied Optics
|June 6, 2013
Summary
This study presents an intensity modulated fiber-optic position sensor that overcomes alignment issues. Accurate position sensing relies on understanding the coupled power distribution shape for optimal performance.
Area of Science:
- Optoelectronics
- Fiber Optics
- Sensor Technology
Background:
- Coupling-based fiber-optic sensors often face alignment challenges.
- Integrating detector electronics at the sensing point can be problematic.
Purpose of the Study:
- To present and analyze an intensity modulated fiber-optic position sensor.
- To eliminate alignment issues inherent in coupling-based fiber-optic sensors.
- To maintain a sensing point free from detector electronics.
Main Methods:
- Utilizing a fiber-to-bundle coupling mechanism.
- Employing a Complementary Metal-Oxide-Semiconductor (CMOS) image camera for readout.
- Implementing fast routines for position extraction and calibration.
- Characterizing system robustness via simulations and comparing with experimental results.
Main Results:
- The proposed system effectively eliminates alignment issues.
- Knowledge of the coupled power distribution shape is critical for high system performance.
- Position extraction error can be minimized to the theoretical limit.
Conclusions:
- The developed fiber-optic position sensor offers a robust and accurate solution.
- Accurate modeling of the coupled power distribution is key to achieving optimal sensor performance.
- The system demonstrates potential for advanced position sensing applications.
