Using the weighted residual method, formulas for calculating the propagation constant and field distributions of diffused channel waveguides are derived. The results obtained are more accurate than those of Marcatili’s method and agree well with those of the finite-element method.
© 1988 Optical Society of America
Original Manuscript: September 18, 1987
Manuscript Accepted: November 23, 1987
Published: February 1, 1988
Li Qiao and Shouxian She, "Analysis of propagation characteristics of diffused channel waveguides: weighted residual method," Opt. Lett. 13, 167-168 (1988)