We present results of an experimental investigation of the optical losses produced by bending large core optical fibers, typical of those used in power beam delivery systems. Experiments have been conducted over a range of core diameters for both plastic clad silica and all-silica fibers as a function of bend radius. A theoretical model has been developed for predicting the magnitude of the bend loss, and agreement was obtained with the experimental results. The study thus yields design information for fiber beam delivery systems.
© 1991 Optical Society of America
Original Manuscript: April 18, 1990
Published: January 20, 1991
Alvaro A. P. Boechat, Daoning Su, D. R. Hall, and J. D. C. Jones, "Bend loss in large core multimode optical fiber beam delivery systems," Appl. Opt. 30, 321-327 (1991)