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Study on hollow-core photonic crystal fiber terahertz evanescent wave sensor in drug detection

XIA SHA1, REN GUANG-JUN1,* , JIANG DAO-LIAN1, YAO JIAN-QUAN2

Affiliation

  1. School of Electronics Information Engineering; Tianjin Key Lab. Of Film Electronic & Communication Devices; Engineering Research Center of Communication Devices and Technology, Ministry of Education;
  2. College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics; Key Laboratory of Optoelectric Information Science and Technology, Ministry of Education, Ti

Abstract

In order to find an efficient way in drug detection, a new measurement that based on the hollow-core photonic crystal fiber of terahertz (THz-PCF) evanescent wave sensor is proposed by the plane wave method (PWM) and the finite element method (FEM). Through constantly changing the size of the air hole and adjusting the distance between each hole to find out the optimum state. Results reveal that when the diameter of air hole is 92um and the distance between each hole is 100um, the THz wave can spread much more smoothly in PCF. Furthermore，when the confinement loss of hollow-core THz-PCF evanescent wave sensor is 0.18 dB/m, the relative sensitivity can reach 98.8561%. Therefore, the hollow-core THz-PCF evanescent wave sensor has good advantages in drug detection..

Keywords

THz, PCF, Evanescent wave, Drug, Relative sensitivity.

Submitted at: Feb. 16, 2013
Accepted at: Sept. 18, 2013

Citation

XIA SHA, REN GUANG-JUN, JIANG DAO-LIAN, YAO JIAN-QUAN, Study on hollow-core photonic crystal fiber terahertz evanescent wave sensor in drug detection, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 9-10, pp. 966-970 (2013)