Acoustic emission sensor based on biconical fiber micro-tapers

Yi Li; Xiaozhen Wang; Xiaoyi Bao

doi:10.1117/12.834882

5 October 2009 Acoustic emission sensor based on biconical fiber micro-tapers

Yi Li, Xiaozhen Wang, Xiaoyi Bao

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75032V (2009) https://doi.org/10.1117/12.834882
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

A fiber optic sensor to detect acoustic emission is reported, which is based on a fiber taper incorporated in a fiber Mach- Zehnder (M-Z) interferometer as the sensing arm. Benefited from their micrometer sizes in transverse dimension, fiber tapers have higher sensitivity to the environmental vibrations compared with standard single mode fibers (SMFs). Under the same conditions, the thinnest fiber taper in this report with a diameter of 1.7 μm shows 22dB improvement in the signal to noise ratio (SNR) comparing that in SMF28. We also calculated the phase change of a fiber taper under longitudinal strain and the variation of phase changes with different diameters.

Citation Download Citation

Yi Li, Xiaozhen Wang, and Xiaoyi Bao "Acoustic emission sensor based on biconical fiber micro-tapers", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032V (5 October 2009); https://doi.org/10.1117/12.834882

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