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- Title
Flying particle sensors in hollow-core photonic crystal fibre.
- Authors
Bykov, D. S.; Schmidt, O. A.; Euser, T. G.; Russell, P. St. J.
- Abstract
Optical fibre sensors make use of diverse physical effects to measure parameters such as strain, temperature and electric field. Here we introduce a new class of reconfigurable fibre sensor, based on a 'flying-particle' optically trapped inside a hollow-core photonic crystal fibre and illustrate its use in electric field and temperature sensing with high spatial resolution. The electric field distribution near the surface of a multi-element electrode is measured with a resolution of ∼100 μm by monitoring changes in the transmitted light signal due to the transverse displacement of a charged silica microparticle trapped within the hollow core. Doppler-based velocity measurements are used to map the gas viscosity, and thus the temperature, along a hollow-core photonic crystal fibre. The flying-particle approach represents a new paradigm in fibre sensors, potentially allowing multiple physical quantities to be mapped with high positional accuracy over kilometre-scale distances.
- Subjects
OPTICAL fiber detectors; PHOTONIC crystal fibers; OPTICAL properties of particles; ELECTRIC fields; TEMPERATURE sense
- Publication
Nature Photonics, 2015, Vol 9, Issue 7, p461
- ISSN
1749-4885
- Publication type
Article
- DOI
10.1038/nphoton.2015.94