Simultaneous interrogation of interferometric and Bragg grating sensors

G. P. Brady; Kyriacos Kalli; David J. Webb; Laurence Reekie; Jean-Luc Archambault; David A. Jackson

doi:10.1117/12.219627

15 September 1995 Simultaneous interrogation of interferometric and Bragg grating sensors

G. P. Brady, Kyriacos Kalli, David J. Webb, Laurence Reekie, Jean-Luc Archambault, David A. Jackson

Proceedings Volume 2507, Distributed and Multiplexed Fiber Optic Sensors V; (1995) https://doi.org/10.1117/12.219627
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

A new method for the simultaneous interrogation of conventional two-beam interferometers and Bragg grating sensors is proposed and demonstrated. An unbalanced Mach-Zehnder interferometer illuminated by a low coherence source is used to act as a wavelength tunable source for the grating and as a path matched filter for a Fizeau cavity. The technique gives high phase resolution. The grating sensor gave a dynamic strain resolution of approximately equals 0.05 (mu) (epsilon) /(root)Hz at 20 Hz and the interferometric resolution was better than 1 mrad/(root)Hz at 20 Hz, corresponding to an rms mirror displacement of 0.08 nm.

Citation Download Citation

G. P. Brady, Kyriacos Kalli, David J. Webb, Laurence Reekie, Jean-Luc Archambault, and David A. Jackson "Simultaneous interrogation of interferometric and Bragg grating sensors", Proc. SPIE 2507, Distributed and Multiplexed Fiber Optic Sensors V, (15 September 1995); https://doi.org/10.1117/12.219627

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