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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 19, Iss. 3 — Mar. 1, 2001
  • pp: 358–

Studies on a Few-Mode Fiber-Optic Strain Sensor Based on LP01-LP 02 Mode Interference

Arun Kumar, Nitin K. Goel, and R. K. Varshney

Journal of Lightwave Technology, Vol. 19, Issue 3, pp. 358- (2001)


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Abstract

We studied a fiber-optic strain sensor based on interference between LP01-LP02 modes of a circularly symmetric few-mode fiber (FMF). A simple theoretical analysis for predicting the performance characteristics of such a sensor is developed. Fiber elongations producing differential phase shift of 2 ( l2) between the two modes are measured, which is found to be independent of sensing length of the fiber as predicted by theory. A good agreement between the experimental and theoretical values of l2 is observed. Theoretical calculations predict that the sensitivity of such a sensor is maximum for fibers with V = 4.82 and increases with the increase in the core cladding index difference n.

[IEEE ]

Citation
Arun Kumar, Nitin K. Goel, and R. K. Varshney, "Studies on a Few-Mode Fiber-Optic Strain Sensor Based on LP01-LP 02 Mode Interference," J. Lightwave Technol. 19, 358- (2001)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-19-3-358

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