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Optomechanical sensing of hydrogen based on Brillouin scattering in gas in a hollow-core photonic crystal fiber

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Abstract

We demonstrate, for the first time to our knowledge, the detection of hydrogen by measuring the guided-wave Brillouin frequency shift in a gas-filled hollow-core photonic crystal fiber. Experiment with 4260-ppm hydrogen demonstrates a change of the guided-wave Brillouin frequency shift of 60.9 kHz with respective to pure nitrogen.

© 2018 The Author(s)

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