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13 May 2010 Design and performance of a mechanical strain optical sensor using a multimode fiber locally stressed by a periodical micrometric perturbation
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Abstract
We present a new kind of intrinsic intensity modulation optical fiber sensor. The sensitive effect is obtained by a mechanical perturbation of the fiber at the micrometric scale. The fiber diameter and the refractive indices are locally modified. The principle of this sensor is a losses modulation in this perturbed zone of the fiber due to different physical effects like thermo-optic or elasto-optic effects. The perturbation is obtained by clipping the fiber in two microstructured jaws. Mechanical and electromagnetic simulations are used to predict the response of the sensor. A strain test on the sensor is compared to the modeling.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Anthony Bichler, Bruno Serio, Sylvain Lecler, and Sylvain Fischer "Design and performance of a mechanical strain optical sensor using a multimode fiber locally stressed by a periodical micrometric perturbation", Proc. SPIE 7726, Optical Sensing and Detection, 77262B (13 May 2010); https://doi.org/10.1117/12.854955
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