W. Zhou, H. Shen, P. Cooke, J. Pamulapati, P. Newman, and M. Dutta, "Optical waveguide materials with voltage tunable polarization modes,"
in Conference on Lasers and Electro-Optics, J. Bowers, D. Miller, D. Scifres, and A. Weiner, eds.,
Vol. 9 of OSA Technical Digest
(Optical Society of America, 1996), paper CWD4.