[1] C. Chou, H.-T. Wu, Y.-C. Huang, Y.-L. Chen, and W.-C. Kuo, Opt. Express 14, 4307 (2006).
[2] W. Yuan, H. P. Ho, C. L. Wong, S. K. Kong, and C. Lin, IEEE Sensors Journal 7, 70 (2007).
[3] Z. Gu, S. Feng, P. Liang, and W. Zhang, Acta Opt. Sin. (in Chinese) 21, 83 (2001).
[4] G. Kong, S. E, W. Deng, H. Guo, D. Zhang, and C. Chen, Chinese J. Lasers (in Chinese) 36, 134 (2009).
[5] J. Zeng, D. Liang, Z. Zeng, and Y. Du, Acta Opt. Sin. (in Chinese) 27, 404 (2007).
[6] R. G. Heideman and P. V. Lambeck, Sens. Actuat. B 61, 100 (1999).
[7] B. Y. Shew, C. H. Kuo, Y. C. Huang, and Y. H. Tsai, Sens. Actuat. A 120, 383 (2005).
[8] J.-N. Yih, Y.-M. Chu, Y.-C. Mao, W.-H. Wang, F.-C. Chien, C.-Y. Lin, K.-L. Lee, P.-K. Wei, and S.-J. Chen, Appl. Opt. 45, 1938 (2006).
[9] N. Kinrot and M. Nathan, J. Lightwave Technol. 24, 2139 (2006).
[10] A. M. Armani and K. J. Vahala, Opt. Lett. 31, 1896 (2006).
[11] H. Ma, Z. Jin, C. Ding, and Y. Wang, Chinese J. Lasers (in Chinese) 32, 1330 (2005).
[12] R. W. Boyd and J. E. Heebner, Appl. Opt. 40, 5742 (2001).
[13] E. Krioukov, D. J. W. Klunder, A. Driessen, J. Greve, and C. Otto, Opt. Lett. 27, 1504 (2002).
[14] K. De Vos I. Bartolozzi, E. Schacht, P. Bienstman, and R. Baets, Opt. Express 15, 7610 (2007).
[15] J. Niehusmann, A. Vorckel, P. H. Bolivar, T. Wahlbrink, W. Henschel, and H. Kurz, Opt. Lett. 29, 2861 (2004).
[16] A. Yalcin, K. C. Popat, J. C. Aldridge, T. A. Desai, J. Hryniewicz, N. Chbouki, B. E. Little, O. King, V. Van, S. Chu, D. Gill, M. Anthes-Washburn, M. S. Unlü, and B. B. Goldberg, IEEE J. Sel. Top. Quantum Electron. 12, 148 (2006).
[17] C.-Y. Chao, W. Fung, and L. J. Guo, IEEE J. Sel. Top. Quantum Electron. 12, 134 (2006).
[18] C.-Y. Chao and L. J. Guo, J. Lightwave Technol. 24, 1395 (2006).
[19] X. Zhang, J. Zeng, D. Liang, and Z. Zhao, Acta Opt. Sin. (in Chinese) 28, (s2) 373 (2008).
[20] Z. Xia, Y. Chen, and Z. Zhou, IEEE J. Quantum Electron. 44, 100 (2008).
[21] M. Sumetsky, Opt. Lett. 32, 2577 (2007).
[22] W. Bogaerts, R. Baets, P. Dumon, V. Wiaux, S. Beckx, D. Taillaert, B. Luyssaert, J. Van Campenhout, P. Bienstman, and D. Van Thourhout, J. Lightwave Technol. 23, 401 (2005).
