Polarimetric fiber optical sensor with high sensitivity using a Fabry-Perot structure.

Area of Science:

• * Optics and Photonics
• * Sensor Technology
• * Materials Science

Background:

• * Optical fiber sensors offer non-intrusive measurement capabilities.
• * Fabry-Perot interferometers are sensitive to external perturbations.
• * Birefringence in optical fibers can be induced by applied stress.

Purpose of the Study:

• * To present a novel polarimetric Fabry-Perot sensor concept.
• * To demonstrate its application in static force measurement.
• * To achieve high sensitivity through stress-induced birefringence.

Main Methods:

• * Development of a polarimetric Fabry-Perot sensor.
• * Application of stress-induced birefringence in an optical fiber.
• * Laser diode frequency locking to a resonance peak.
• * Heterodyne detection for phase difference measurement of eigenpolarizations.

Main Results:

• * Successful measurement of static force using the proposed sensor concept.
• * Demonstrated high sensitivity in force detection.
• * Validated the effectiveness of phase detection of transmitted light.

Conclusions:

• * The novel polarimetric Fabry-Perot sensor is a viable tool for high-sensitivity static force measurement.
• * The sensor leverages stress-induced birefringence and advanced optical detection techniques.
• * This technology shows promise for various sensing applications requiring precise force monitoring.