An Integrative Biosensor Based on Contra-Directional Coupling Two-dimensional Photonic Crystal Waveguides  

作　　者：毛晓宇 姚荻笔 赵凌云 黄翊东 张巍 彭江得 

机构地区：[1]State Key Lab of Integrated Optoelectronics, Department of Electronics Engineering, Tsinghua University, Beijing 100084

出　　处：《Chinese Physics Letters》2008年第1期141-143,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 60537010, and the National Basic Research Programme of China under Grant No 2006CB302804.

摘　　要：We propose an integrative biochemical sensor utilizing the dip in the transmission spectrum of a normal singleline defect photonic crystal （PC） waveguide, which has a eontra-directional coupling with another PC waveguide. When the air holes in the PC slab are filled with a liquid analyte with different refractive indices, the dip has a wavelength shift. By detecting the output power variation at a certain fixed wavelength, a sensitivity of 1.2 × 10^-4 is feasible. This structure is easy for integration due to its plane waveguide structure and omissible pump source. In addition, high signal to noise ratio can be expected because signal transmits via a normal single-line defect PC waveguide instead of the PC hole area or analyte.We propose an integrative biochemical sensor utilizing the dip in the transmission spectrum of a normal singleline defect photonic crystal （PC） waveguide, which has a eontra-directional coupling with another PC waveguide. When the air holes in the PC slab are filled with a liquid analyte with different refractive indices, the dip has a wavelength shift. By detecting the output power variation at a certain fixed wavelength, a sensitivity of 1.2 × 10^-4 is feasible. This structure is easy for integration due to its plane waveguide structure and omissible pump source. In addition, high signal to noise ratio can be expected because signal transmits via a normal single-line defect PC waveguide instead of the PC hole area or analyte.

关 键 词：PULSARS x-ray spectra relativity and gravitation REDSHIFT 

分 类 号：TN252[电子电信—物理电子学]