Title :
Measurement of gas diffusion coefficient using photonic crystal fiber
Author :
Hoo, Y.L. ; Jin, W. ; Ho, H.L. ; Wang, D.N.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China
Abstract :
We report the use of photonic crystal fiber (PCF) for the measurement of gas diffusion constant. PCF has uniform airhole columns along the fiber length that provide the basis for the study of gas diffusion based on the capillary method. The gas concentration within the airhole columns is monitored by measuring the attenuation of light through the PCF caused by the evanescent wave absorption of light by the gas sample.
Keywords :
diffusion; fibre optic sensors; monitoring; photonic crystals; air-hole columns; airhole columns; capillary method; evanescent wave absorption; fiber length; fibre optic sensors; gas concentration; gas diffusion coefficient; gas sample; light attenuation measurement; monitored; photonic crystal fiber; Absorption; Attenuation measurement; Chemicals; Diffusion processes; Gases; Manufacturing; Monitoring; Optical attenuators; Optical fibers; Photonic crystal fibers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818241
