An accurate numerical simulation study of a polarization conversion phenomenon in deeply etched semiconductor electro-optic waveguide modulators is presented. Based on a powerful and versatile finite element package, the effect of various imperfect fabrication conditions on unwanted and unexpected polarization conversion in electro-optic semiconductor modulators is, for the first time to our knowledge reported and explained in terms of its origin.
© 2005 Optical Society of America
Original Manuscript: April 6, 2004
Revised Manuscript: October 5, 2004
Manuscript Accepted: October 19, 2004
Published: February 20, 2005
Salah S. A. Obayya, Shyqyri Haxha, B. M. Azizur Rahman, and Kenneth T. V. Grattan, "Numerical modeling of polarization conversion in semiconductor electro-optic modulators," Appl. Opt. 44, 1032-1038 (2005)