[5] [5] Okamoto T, Yamamoto M, Yamaguchi. Optical waveguide absorption sensor using a single coupling prism ［J］. J. Opt. Soc. Am. A, 2000, 17(10): 1880-1886.

[6] [6] Wu Bin, Wang Qingkang. Optical waveguide sensor for on-line monitoring of bacteria ［J］. Opt. Lett., 2003, 28(14): 1233-1235.

[7] [7] Horvath R, Henrik C. Demonstration of reverse symmetry waveguide sensing in aqueous solutions ［J］. Appl. Phys. Lett., 2002, 81(12): 2166-2168.