%0 Journal Article
%T An Integrative Biosensor Based on Contra-Directional Coupling Two-dimensional Photonic Crystal Waveguides
%A MAO Xiao-Yu
%A YAO Di-Bi
%A ZHAO Ling-Yun
%A HUANG Yi-Dong
%A ZHANG Wei
%A PENG Jiang-De
%A <br>
%J 中国物理快报
%D 2008
%I 
%X We propose an integrative biochemical sensor utilizing the dip in the transmission spectrum of a normal single-line defect photonic crystal (PC) waveguide, which has a contra-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.
%K 42
%K 70
%K Qs
%K 78
%K 20
%K Bh<br>光波导
%K 二维光子晶体
%K 生物传感器
%K 反向耦合
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=3A2F201E7767A639982885C1155977F9&yid=67289AFF6305E306&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=A8DE7703CC9E390F&eid=475189FCB44F11F6&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=12