[1] J. Wells, IEEE Microw. Mag. 10, 104 (2009).

[2] A. Hirata, T. Kosugi, H. Takahashi, R. Yamaguchi, F. Nakajima, T. Furuta, H. Ito, H. Sugahara, Y. Sato, and T. Nagatsuma, IEEE Trans. Microw. Theor. Technol. 54, 1937 (2006).

[3] B. B. Hu and M. C. Nuss, Opt. Lett. 20, 1716 (1995).

[4] Q. Wu, T. D. Hewitt, and X.-C. Zhang, Appl. Phys. Lett. 69, 1026 (1996).

[5] W. L. Chan, J. Deibel, and D. M. Mittleman, Rep. Prog. Phys. 70, 1325 (2007).

[6] S. Pan and J. Yao, Opt. Express 17, 5414 (2009).

[7] A. Wiberg, P. Perez-Millan, M. V. Andres, and P. O. Hedekvist, J. Lightw. Technol. 24, 329 (2006).

[8] Q. Wang, H. Rideout, F. Zeng, and J. Yao, IEEE Photon. Technol. Lett. 18, 2460 (2006).

[9] T. Wang, H. Chen, M. Chen, J. Zhang, and S. Xie, J. Lightw. Technol. 27, 2044 (2009).

[10] S. Fukushima, C. F. C. Silva, Y. Muramoto, and A. J. Seeds, J. Lightw. Technol. 21, 3043 (2003).

[11] M. Musha, A. Ueda, M. Horikoshi, K. Nakagawa, M. Ishiguro, K. Ueda, and H. Ito, Opt. Commun. 240, 201 (2004).

[12] H.-J. Song, N. Shimizu, T. Furuta, K. Suizu, H. Ito, and T. Nagatsuma, J. Lightw. Technol. 26, 2521 (2008).

[13] G. Qi, J. Yao, J. Seregelyi, S. Paquet, and C. Belisle, IEEE Trans. Microw. Theor. Technol. 53, 3090 (2005).

[14] J. Zhang, H. Chen, M. Chen, T. Wang, and S. Xie, IEEE Photon. Technol. Lett. 19, 1057 (2007).

[15] C.-T. Lin, P.-T. Shih, J. Chen, W.-Q. Xue, P.-C. Peng, and S. Chi, IEEE Photon. Technol. Lett. 20, 1027 (2008).

[16] S. Pan and J. Yao, IEEE Trans. Microw. Theor. Technol. 58, 1967 (2010).

[17] Y. Lu, Y. Xing, and Y. Dong, Chin. Opt. Lett. 8, 316 (2010).

[18] X. Zou, W. Pan, and J. Yao, Chin. Opt. Lett. 8, 468 (2010).

[19] J. Yu, M. Huang, Z. Jia, A. Chowdhury, H.-C. Chien, Z. Dong, W. Jian, and G.-K. Chang, in Proceedings of OFC/NFOEC 2010 OTuF2 (2010).

[20] R. Wu, V. R. Supradeepa, C. M. Long, D. E. Leaird, and A. M. Weiner, Opt. Lett. 35, 3234 (2010).