A novel single-mode bend fiber-optic sensing principle is presented. The design makes use of the translucent protective sheath that encases a typical fiber as a means of locating the position of a small bend present on an otherwise straight fiber. We can simultaneously determine bend magnitude by measuring the reduction in the fiber’s core light. The theoretical model presented and the experimental results obtained are in excellent agreement, suggesting that a single-point sensor system is feasible with the proposed technique.
© 1997 Optical Society of America
Original Manuscript: February 19, 1997
Revised Manuscript: April 14, 1997
Published: September 1, 1997
R. C. Gauthier and C. Ross, "Theoretical and experimental considerations for a single-mode fiber-optic bend-type sensor," Appl. Opt. 36, 6264-6273 (1997)