We report the modeling results of an all-fiber gas detector that uses photonic crystal fiber (PCF). The relative sensitivity of the PCF as a function of the fiber parameters is calculated. Gas-diffusion dynamics that affect the sensor response time is investigated theoretically and experimentally. A practical PCF sensor aiming for high sensitivity gas detection is proposed.
© 2003 Optical Society of America
Yeuk L. Hoo, Wei Jin, Chunzheng Shi, Hoi L. Ho, Dong N. Wang, and Shuang C. Ruan, "Design and Modeling of a Photonic Crystal Fiber Gas Sensor," Appl. Opt. 42, 3509-3515 (2003)