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Proceedings Paper

Controlling the sensitivity of a non-adiabatic tapered optical fiber for measuring the refractive index using all fiber Sagnac loop interferometer
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Paper Abstract

A single-mode non-adiabatic tapered optical fiber (NATOF) sensor was inserted into a Sagnac loop interferometer allowing tuning its sensitivity to refractive index (RI) by use of polarization control. By adjusting any polarization controllers inserted in the Sagnac loop interferometer, various cladding modes are selectively excited in each arm of the interferometric taper resulting into different phase changes for the clockwise and counterclockwise beams. By this method, sensitivity of the sensor for RI in the range from 1.3380 to 1.3510 was tuned between 876.24 RIU/nm to 1233.07 RIU/nm.

Paper Details

Date Published: 26 July 2011
PDF: 6 pages
Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 800144 (26 July 2011); doi: 10.1117/12.892102
Show Author Affiliations
M. I. Zibaii, INESC Porto (Portugal)
Shahid Beheshti Univ. (Iran, Islamic Republic of)
P. A. S. Jorge, INESC Porto (Portugal)
O. Frazão, INESC Porto (Portugal)
H. Latifi, Shahid Beheshti Univ. (Iran, Islamic Republic of)


Published in SPIE Proceedings Vol. 8001:
International Conference on Applications of Optics and Photonics

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