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Terahertz anti-resonant reflecting hollow waveguide sensor

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Abstract

A hollow-core anti-resonant reflecting terahertz waveguide is first demonstrated for refractive index sensing. Various dangerous vapors and micro-molecular-layer with 1%-concentration variation (corresponds to 0.01-index-variation) have been successfully identified. The sensitivity could reach up to 7.17×105nm/RIU.

© 2010 Optical Society of America

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