[1] K. Okamoto, Fundamentals of Optical Waveguides (Elsevier, Burlington, 2006).
[2] A. Boudrioua, Photonic Waveguides Theory and Applications (ISTE, London, 2009).
[3] G. Lifante, Integrated Photonics: Fundamentals (John Willey & Sons, Chichester, 2003).
[4] W. Ling, Z. Sheng, C. Qiu, H. Li, A. Wu, X. Wang, S. Zou, and F. Gan, Chin. Opt. Lett. 11, 041301 (2013).
[6] A. Belghoraf, AMSE J. Mod. Meas. Control General Phys. 74, 51 (2001).
[7] R. G. Hunsperger, Integrated Optics: Theory and Technology (Springer, New York, 2009).
[8] J. M. Arnold, A. Belghoraf, and A. Dendane, IEE Proceedings J. 132, 314 (1985).
[9] A. Dendane and J. M. Arnold, IEEE J. Quantum Electron. QE-22, 1551 (1986).
[10] M. Bacha and A. Belghoraf, Int. Rev. Mod. Sim. 6, 1624 (2013).
[11] V. Prajzler, H. Tuma, J. Spirkova, and V. Jerabek, Radioengineering. 22, 233 (2013).
[12] K. Kawano and T. Kitoh, Introduction to Optical Waveguide Analysis (John Willey & Sons, New York, 2001).
[13] G. L. Yip, Integ. Opt. Cir. SPIE. 1583, 240 (1991).
[14] Y. T. Han, J. U. Shin, D. J. Kim, S. H. Park, Y. J. Park, and H. K. Sung, ETRI J. 25, 535 (2003).
[15] M. M. Ismail and M. N. Shah Zainuddin, Appl. Mech. Mater. 52-54, 2133 (2011).
[16] L. Virot, L. Vivien, J. F′ed′eli, Y. Bogumilowicz, J. Hartmann, F. Boeuf, P. Crozat, D. Marris-Morini, and E. Cassan, Photon. Res. 1, 140 (2013).
[17] R. Tao, X. Wang, H. Xiao, P. Zhou, and L. Si, Photon. Res. 1, 186 (2013).
[18] P. K. Tien, G. Smolinsky, and R. J. Martin, IEEE Trans.
[19] Microwave Theory Tech. MTT-23, 79 (1975).