A new derivation of the coupled-mode equations and coupling coefficient for the troublesome but important case of the Bragg reflection of TM guided waves in a corrugated, planar optical waveguide is presented. The technique solves the (approximate) wave equation directly and clarifies those features of the analysis that are essential to treat the problem correctly.
© 1990 Optical Society of America
Original Manuscript: December 4, 1989
Manuscript Accepted: March 16, 1990
Published: May 15, 1990
Dennis G. Hall, "Coupled-mode theory for corrugated optical waveguides," Opt. Lett. 15, 619-621 (1990)