Share Email Print
cover

Proceedings Paper

A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure
Author(s): Ming Ding; Pengfei Wang; Junlong Wang; Heng Yuan; Gilberto Brambilla
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915781 (2 June 2014); doi: 10.1117/12.2059382
Show Author Affiliations
Ming Ding, BeiHang Univ. (China)
Univ. of Southampton (United Kingdom)
Pengfei Wang, Dublin Institute of Technology (Ireland)
Junlong Wang, Beijing Aerospace Times Optical-Electronic Technology Co. (China)
Heng Yuan, Beihang Univ. (China)
Gilberto Brambilla, Univ. of Southampton (United Kingdom)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

© SPIE. Terms of Use
Back to Top