2 June 2014 A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure
Author Affiliations +
Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915781 (2014) https://doi.org/10.1117/12.2059382
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
A compact fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure is demonstrated. Focused ion beam (FIB) is exploited to cut the fiber tip to obtain a flat end-face and then a layer of gold is coated on the tip surface, to increase its reflection. An average sensitivity of 265 nm/RIU is obtained experimentally with a ~2.94 μm diameter singlemode-multimode-singlemode fiber tip (SMST). Because of several advantages, including compactness, ease of fabrication, linear response, high sensitivity, easy connection with other fiberized optical components and low cost, this refractive index sensor could find various applications in chemical and biological area.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ming Ding, Ming Ding, Pengfei Wang, Pengfei Wang, Junlong Wang, Junlong Wang, Heng Yuan, Heng Yuan, Gilberto Brambilla, Gilberto Brambilla, } "A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915781 (2 June 2014); doi: 10.1117/12.2059382; https://doi.org/10.1117/12.2059382
PROCEEDINGS
4 PAGES


SHARE
Back to Top