Directional force measurement technology based on fiber optical laser heterodyning demodulation

Jingyi Gao; Han Wang; Xi Guo; Chengang Lyu

doi:10.1117/12.2178625

13 April 2015 Directional force measurement technology based on fiber optical laser heterodyning demodulation

Jingyi Gao, Han Wang, Xi Guo, Chengang Lyu

Proceedings Volume 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II; 95220E (2015) https://doi.org/10.1117/12.2178625
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China

Abstract

Distributed Bragg Reflector (DBR) polarimetric optical fiber laser sensors have been attracting great interests due to harsh environment capability and high signal-to-noise ratio .We demonstrate directional force measurement technology using dual-polarization DBR optical fiber laser as a sensor. The influences of external force (bending, current and ultrasonic signal) could be analyzed by inducing a DFB polarimetric laser sensor to detect the beating signals shifts when the cavity is perturbed. We present the analysis of sensing mechanism on the DBR geometric construction and demodulation of directional information by separating the dual orthogonal polarization modes. With loading angles at 35°, 45°, 55°with 10° interval, the DBR laser sensor has shown orientation recognization ability corresponding to beating signals shifts, offering a potential for vector force directional detection.

Citation Download Citation

Jingyi Gao, Han Wang, Xi Guo, and Chengang Lyu "Directional force measurement technology based on fiber optical laser heterodyning demodulation", Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95220E (13 April 2015); https://doi.org/10.1117/12.2178625

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