[1] M. Koshiba, J. Lightwave Technol. 19, 1970 (2001).
[2] S. Boscolo, M. Midrio and C. G. Someda, IEEE J. Quantum Electron. 38, 47 (2002).
[3] J. Smajic, C. Hafner and D. Erni, Opt. Express 11, 566 (2003).
[4] F. S. S. Chien, Y. J. Hsu, W. F. Hsieh and S. C. Cheng, Opt.Express 12, 1119 (2003).
[5] M. Y. Tekeste and J. M. Yarrison-Rice, Opt. Express 14, 7931(2006).
[6] Wanwen Huang, Yao Zhang and Baojun Li, Opt. Express 16,1600 (2008).
[7] Zhu Gui-Xin, Yu Tian-Bao, Chen Shu-Wen, Liao Qing-Hua,Liu Nian-Hua and Huang Yong-Zhen, Acta Photonica Sinica 39, 3450 (2010). (in Chinese)
[8] Huang Jingyun, Chen Zhong, Zhang Zesong, Zhu Chongyu,He Haiping, Ye Zhizhen, Qu Guangyuan and Tong Limin,Applied Physics Letters 98, 093102 (2011).
[9] M. P. Bernal, M. Roussey, F. Baida, S. Benchabane, A. Khelif and V. Laude, Photonic and Phononic Band Gap Properties of Lithium Niobate, Ferroelectric Crystals for Photonic Applications, Springer Series in Materials Science 91, 307(2009).
[10] Chen Feng, Journal of Applied Physics 106, 081101 (2009).
[11] Frederik Sulser, Gorazd Poberaj, Manuel Koechlin and PeterGünter, Opt. Express 17, 20291 (2009).
[12] H. Hu, R. Ricken and W. Sohler, Opt. Express 17, 24261 (2009).
[13] P. G. Luan and K. D Chang, Opt. Express 15, 4536 (2007).