[1] H. J. Caulfield and S. Dolev, Nature Photon 4, 261 (2010).
[2] V. K. Srivastava and V. Priye, Optica Applicata 41, 157 (2011).
[3] E. A. J. Marcatili, Bell Labs Technical Journal 48, 2103 (1969).
[4] H. J. Caulfield, R. A. Soref and C. S. Vikram, Photon. Nanostruct. Fundam. Appl. 5, 14 (2007).
[5] A. I. Zavalin, H. J. Caulfield and C. S. Vikram, Optik 121, 1300 (2010).
[6] R. Soref, Advanced in Optoelectronics 2011, 627802 (2007).
[7] GU Guo-qiang, CAI Zhi-ping, XU Hui-ying, WANG Jin-zhang, XU Bin and YAN Yu, Journal of Optoelectronics · Laser 23, 2267 (2012). (in Chinese)
[8] L. Zhang, J. F. Ding, Y. H. Tian, R. Q. Ji, L. Yang, H. T. Chen, P. Zhou, Y. Y. Lu, W. W. Zhu and R. Min, Optics Express 20, 11605 (2012).
[9] Shiyun Lin, Yasuhiko Ishikawa and Kazumi Wada, Optics Express 20, 1378 (2012).
[10] YANG Jian, CHEN Wei-wei, WANG Wan-jun, WANG Ming-hua and YANG Jian-yi, Journal of Optoelectronics · Laser 24, 16 (2013). (in Chinese)
[11] Liangjun Lu, Linjie Zhou, Xinwan Li and Jianping Chen, Optics Letters 39, 1633 (2014).
[12] C. Qiu, X. Ye, R. Soref, L. Yang and Q. Xu, Optics Letters 37, 3942 (2012).
[13] J. Hardy and J. Shamir, Optics Express 15, 150 (2007).
[14] Yu Jin-zhong, Silicon Photonics, Beijing: Science Press, 227 (2011). (in Chinese)