2 June 2014 A photonic crystal fibre tip refractometer based on multimode interference
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91578F (2014) https://doi.org/10.1117/12.2059596
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
A compact singlemode-photonic crystal fibre-singlemode fibre tip (SPST) refractive index sensor is demonstrated in this paper. A CO2 laser cleaving is exploited to provide a clean-cut fibre tip which is then coated by a layer of gold to increase reflection. An average sensitivity of 39.1 nm/RIU and a resolvable index change of 2.56×10-4 are obtained experimentally with a ~3.2 µm diameter SPST. Because of its compactness, ease of fabrication, linear response, high sensitivity, easy connectivity to other fibreized optical components and low cost, this refractometer could find various applications in chemical and biological sensing.
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Pengfei Wang, Pengfei Wang, Ming Ding, Ming Ding, Lin Bo, Lin Bo, Yuliya Semenova, Yuliya Semenova, Gilberto Brambilla, Gilberto Brambilla, Gerald Farrell, Gerald Farrell, } "A photonic crystal fibre tip refractometer based on multimode interference", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91578F (2 June 2014); doi: 10.1117/12.2059596; https://doi.org/10.1117/12.2059596
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