White light interferometric fiber optic measurement systems

Kenneth Weir; Kenneth T. V. Grattan; Andrew W. Palmer

doi:10.1117/12.194354

15 November 1994 White light interferometric fiber optic measurement systems

Kenneth Weir, Kenneth T. V. Grattan, Andrew W. Palmer

Proceedings Volume 2248, Optical Measurements and Sensors for the Process Industries; (1994) https://doi.org/10.1117/12.194354
Event: Optics for Productivity in Manufacturing, 1994, Frankfurt, Germany

Abstract

The technique of white light interferometry (WLI) is a powerful method in optical measurement systems. It involves the combination of two interferometers, coupled in series, and a light source of short coherence length. The displacement that is induced by the measurand in the first `sensor' interferometer is then determined in the second `recovery' interferometer with the advantage of a large unambiguous measurement range. The theoretical basis of the technique and practical realizations of the signal processing are considered. The potential of the system is discussed in terms of the measurement of displacement, and the technique is then applied to the measurement of other physical parameters, indicating various potential configurations of sensor elements for use ine in WLI systems. Results are presented illustrating its application in vibration, pressure, and position measurement.

Citation Download Citation

Kenneth Weir, Kenneth T. V. Grattan, and Andrew W. Palmer "White light interferometric fiber optic measurement systems", Proc. SPIE 2248, Optical Measurements and Sensors for the Process Industries, (15 November 1994); https://doi.org/10.1117/12.194354

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