Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 15, Issue 10, Pages 1434-1436Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2003.818241
Keywords
capillary tube; diffusion coefficient; diffusion processes; loss measurement; photonic crystal fiber (PCF)
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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.
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