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Proceedings Paper

Micro-displacement sensor using a Mach-Zehnder interferometer with long-period gratings
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Paper Abstract

We present the fabrication and characterization of a micro-displacement sensor using Mach-Zehnder interferometer in conventional optical fiber SMF28-e. The Mach-Zehnder interferometer uses a configuration of two long-period gratings (LPG) in series mechanically induced. The Mach-Zehnder interferometers were made to operate in the region of 1300 nm. As a result the interferometers were obtained with transmission bands with a bandwidth of 2 nm, extinction ratio of 12 dB and insertion loss of 2 to 3 dB. The characterization of the interferometer was found to be measured displacements up to 500 μm with a resolution of 7 microns, which envisions potential applications of micro-displacement sensor in the measurement of micro-deformations.

Paper Details

Date Published: 14 October 2011
PDF: 6 pages
Proc. SPIE 8287, Eighth Symposium Optics in Industry, 82870Z (14 October 2011); doi: 10.1117/12.913337
Show Author Affiliations
K. M. Salas-Alcántara, Ctr. de Investigaciones en Óptica A.C. (Mexico)
I. Torres-Gómez, Ctr. de Investigaciones en Óptica A.C. (Mexico)
D. Monzón-Hernández, Ctr. de Investigaciones en Óptica A.C. (Mexico)
A. Martínez-Ríos, Ctr. de Investigaciones en Óptica A.C. (Mexico)
Luis Armando García-de-la-Rosa, Ctr. de Investigaciones en Óptica A.C. (Mexico)

Published in SPIE Proceedings Vol. 8287:
Eighth Symposium Optics in Industry
Eric Rosas; Norberto Arzate; Ismael Torres; Juan Sumaya, Editor(s)

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