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Proceedings Paper

Characteristics of gas breakdown in hollow-core fibers
Author(s): X. Shi; X. B. Wang; W. Jin; M. S. Demokan
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Paper Abstract

We succeeded in obtaining gas discharge in 250, 150, and 50μm bore-diameter hollow-core fibers by using longitudinal DC excitation. Stable glow discharges of at least several minutes were observed for these hollow-core fibers, and a flash glow was also observed for a hollow-core capillary with a diameter of ~20μm. Breakdown of helium and argon gases in a 26.2cm-length 250μm-inner-diameter hollow-core fiber was achieved with a voltage of less than 30kV. Breakdown voltages of helium and argon gases were measured for various bore-sizes, fiber-lengths, and a pressure range of from below 1 to 50 Torr. Experimental results deviated from previous theoretical models and further theoretical and experimental investigations are needed to understand the unique characteristics of gas-discharge in miniature capillaries with bore-diameter below 250μm.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70042E (16 May 2008); doi: 10.1117/12.785973
Show Author Affiliations
X. Shi, The Hong Kong Polytechnic Univ. (Hong Kong China)
X. B. Wang, Huazhong Univ. of Science and Technology (China)
W. Jin, The Hong Kong Polytechnic Univ. (Hong Kong China)
M. S. Demokan, The Hong Kong Polytechnic Univ. (Hong Kong China)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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