[1] [1] Y. F. Xue, C. H. Wang, G. J. Zhang, and B. Cao, Opt. Commun. 284, 501 (2011).

[2] [2] X. C. Xu, H. Subbaraman, J. Covey, D. Kwong, A. Hosseini, and R. T. Chen, Appl. Phys. Lett. 101, 031109 (2012).

[3] [3] H. Honma, K. Takahashi, M. Ishida, and K. Sawada, Jpn. J. Appl. Phys. 51, 11PA01 (2012).

[4] [4] D. L. Brundrett, T. K. Gaylord, and E. N. Glytsis, Appl. Opt. 37, 2534 (1998).

[5] [5] A. J. Liu, F. Y. Fu, Y. F. Wang, B. Jiang, and W. H. Zheng, Opt. Express 20, 14991 (2012).

[6] [6] T. Ansbaek, I. S . Chung, E. S. Semenova, and K. Yvind, IEEE Photon. Technol. Lett. 25, 365 (2013).

[7] [7] M. C. Y. Huang, Y. Zhou, and C. J. Chang-Hasnain, Nat. Photon. 1, 119 (2007).

[8] [8] I. S. Chung, V. Iakovlev, A. Sirbu, A. Mereuta, A. Caliman, E. Kapon, and J. Mork, IEEE. J .Quantum Electron. 25, 2297 (1989).

[9] [9] Y. Zhou, M. C. Y. Huang, C. Chase, V. Karagodsky, M. Moewe, B. Pesela, F. G. Sedgwick, and C. J. Chang-Hasnian, IEEE J. Sel. Top. Quantum 15, 1485 (2009).

[10] [10] E. Popov, J. Hoose, B. Frankel, C. Keast, M. Fritze, T.Y. Fan, D. Yost, and S. Rabe, Opt. Express 12, 269 (2004).

[11] [11] H. M. Wu, W. Q. Mo, J. Hou, D. S. Gao, R. Hao, H. Jiang, R. M. Guo, W. H. Wu, and Z. P .Zhou, J. Opt. 12, 045703 (2010).

[12] [12] M. A. Ordal, R. J. Bell, R.W. Alexander, Jr., L. L. Long, and M. R. Querry, Appl. Opt. 24, 4493 (1985).

[13] [13] M. G. Moharam and T. K. Gaylord, J. Opt. Soc. Am. 71, 811 (1981).

[14] [14] W. Peng, L. Xi, X. Weng, X. Zhang, D. Zhao, and X. Zhang, Chin. Opt. Lett. 11, 080604 (2013).

[15] [15] J. Wu, C. Zhou, H. Cao, A. Hu, W. Sun, and W. Jia, Chin. Opt. Lett. 11, 060501 (2013).

[16] [16] C. J. Chang-Hasnain, Y. Zhou, M. C. Y. Huang, and C. Chase, IEEE J. Sel. Top. Quantum Electron. 15, 869 (2009).

[17] [17] C. F. R. Mateus, M. C. Y. Huang, Y. F. Deng, A. R. Neureuther, and C. J. Chang-Hasnain, IEEE. Photon. Technol. Lett. 16, 518 (2004).