In the weakly guiding approximation, we present an analysis describing the propagation in bent waveguides characterized by a separable profile (which may be graded) in the transverse direction. We then show how the recently developed matrix method can be used to calculate accurately the bending loss in such waveguides. We then suggest a novel refractive-index profile for which the bending losses can be made extremely small.
© 1987 Optical Society of America
Original Manuscript: September 17, 1986
Manuscript Accepted: December 29, 1986
Published: April 1, 1987
K. Thyagarajan, M. R. Shenoy, and A. K. Ghatak, "Accurate numerical method for the calculation of bending loss in optical waveguides using a matrix approach," Opt. Lett. 12, 296-298 (1987)