A fiber optic sensor system for measuring distrib uted forces is presented in this paper. A high-birefringent fiber is chosen as a sensing element. Based on the coupling effects of polarization modes in high-birefringence fibers, the distribution of the force points along the sensing fiber can be measured by detect ing mode couplings in the fiber which are caused by external force disturbance. The location and magnitude of the measured forces
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References
1.
Born, M. AND E. Wolf.1975. Principles of Optics. New York: Pergamon, pp. 491-544.
2.
Farries, M.C. AND A.J. Rogers.1984. "Distributed Sensing Using Stimulated Raman Interaction in a Monomode Optical Fiber", Proc. of the 2nd International Conference on Optical-Fiber Sensors, Stuttgart, pp. 121-132.
3.
Frands, R.B., W. Torruellas AND R.C. Youngquist .1985. "Birefringent Stress Location Sensor", Proc. SPIE, 586:84-89.
4.
Griffiths, R.W. AND R.C. Lamson.1987. "Adaption of an Electro-Optic Monitoring System to Aerospace Structures", Proc. SPIE , 838:173-181.
5.
Kinsley, S.A.1986. 'Advances in Distributed FODAR (Fiber Optic Detection and Ranging)", Proc. SPIE, 718:66-77.
6.
Okamoto, K., Y. Sasaki AND N. Shibata.1982. "Mode Coupling Effects in Stress—Applied Single Polarization Fibers", IEEE Journal of Quantum Electronics , QE-18(11):1890-1899.
7.
Rogers, A.J.1981. "Polarization-Optical Time Domain Reflectometry: A Technique for the Measurement of Field Distributions", Applied Optics , 20(6):1060-1074.
8.
Rogers, A.J.1987. "Distributed Sensor: A Review", Proc. SPIE, 798:26-35.
9.
Sakai, J. AND T. Kimura.1981. "Birefringence and Polarization Characteristics of Single-Mode Optical Fibers under Elastic Deformations", IEEE Journal of Quantum Electronics, QE-17(6):1041-1051.
10.
Tsubokawa, M., T. Higashi AND S. Sakai.1987. "Fiber-Optic Sensor for Measuring External Forces Distributed along a Fiber", Japanese Journal of Applied Physics, 26(5):587-589
