High-sensitivity fiber refractive index sensor formed by sandwiching a thinned taper between two abrupt tapers

Jinping Chen; Jun Zhou; Lei Shu; Yanan Ma; Haopeng Zhang

doi:10.1117/12.2038918

20 December 2013 High-sensitivity fiber refractive index sensor formed by sandwiching a thinned taper between two abrupt tapers

Jinping Chen, Jun Zhou, Lei Shu, Yanan Ma, Haopeng Zhang

Author Affiliations +

Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 90440D (2013) https://doi.org/10.1117/12.2038918
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

A fiber refractive index (RI) sensor based on a Mach–Zehnder interferometer (MZI) formed by sandwiching a thinned taper between two abrupt tapers. The abrupt tapers and the thinned taper are easily fabricated by a commercial fiber fusion splicer and a homemade tapering machine, respectively. The sensor has been experimentally demonstrated for RI sensing by monitoring its spectral shifts. The experimental results show that the sensor with a thinner taper has higher sensitivity due to the strong evanescent field interaction. A sensitivity of 3808.4 nm/RIU (refractive index unit) is obtained, which is about 100 times higher than that of the conventional taper-based MZI sensors.

Citation Download Citation

Jinping Chen, Jun Zhou, Lei Shu, Yanan Ma, and Haopeng Zhang "High-sensitivity fiber refractive index sensor formed by sandwiching a thinned taper between two abrupt tapers", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90440D (20 December 2013); https://doi.org/10.1117/12.2038918

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available