A mathematical model is presented that predicts birefringence changes in an optical fiber as the cladding is removed. This model approximates a highly elliptical fiber core with a rectangular dielectric waveguide. The birefringence calculations obtained with the model compare well with experimental evidence obtained with real-time birefringence monitoring during cladding removal by chemical etching. The information is used to control the amount of cladding removed from a D fiber to within ~ 0.05 μm for use in the production of passive optical fiber components.
© 1992 Optical Society of America
Original Manuscript: May 9, 1991
Published: April 20, 1992
M. A. Jensen and R. H. Selfridge, "Analysis of etching-induced birefringence changes in elliptic core fibers," Appl. Opt. 31, 2011-2016 (1992)