A stress optical fiber sensor was manufactured and tested. It uses light coupling between two parallel and laterally fused, all-silica multimode optical fibers along a cladding length of a few centimeters. This sensor is dedicated to the measurement of high values of stress. A theoretical model was developed using the mode coupling and the perturbation theory to calculate the global coupling coefficient of light. A serial optical fiber sensor network interrogated by the time-division multiplexing method was realized and tested. The major applications of this sensor are control and monitoring of civil engineering structures and concretes.
© 1998 Optical Society of America
Original Manuscript: October 8, 1997
Revised Manuscript: February 20, 1998
Published: June 1, 1998
Rachid Gafsi, Pierre Lecoy, and Abdelrafik Malki, "Stress optical fiber sensor using light coupling between two laterally fused multimode optical fibers," Appl. Opt. 37, 3417-3425 (1998)