.Analysis of photonic crystal fiber sensor character[J].Optoelectronics Letters,2007,3(3):199-202 Analysis of photonic crystal fiber sensor character GUO Xuan LIU Feng BI Wei-hong College of lnformation Science and Engineering, Yanshan University, Qinhuangdao 066004, China Abstract:       The special character of a PCF which is used as a gas or liquid sensor is discussed. The field distribution is analyzed when the solid core PCF is injected with different medium that has different relative dielectric constant (or refractive index). And the experiential formulas of the relation between refractive index of some kinds of liquid and their concentration are given,in order to measure the concentration of the relative liquid. At the same time, the effect of propagation constant on PCF sensor character is also discussed. Furthermore, the photonic band-gap (PBG) ofPCF (PBG-PCF) is calculated at different medium relative dielectric constant, when it is injected with different medium. That is the principle basis for this kind of PCF sensors. Hits: 3648 Download times: 207 View Full Text    Download reader