Absolute sapphire optical fiber sensor for high-temperature applications

Hai Xiao; Wei Zhao; Robert Lockhart; Jun Wang; Anbo Wang

doi:10.1117/12.298022

2 January 1998 Absolute sapphire optical fiber sensor for high-temperature applications

Hai Xiao, Wei Zhao, Robert Lockhart, Jun Wang, Anbo Wang

Proceedings Volume 3201, Sensors and Controls for Advanced Manufacturing; (1998) https://doi.org/10.1117/12.298022
Event: Intelligent Systems and Advanced Manufacturing, 1997, Pittsburgh, PA, United States

Abstract

This paper describes sapphire fiber-based EFPI sensors incorporated with wavelength scanning absolute signal demodulation. Silica-based optical fiber extrinsic Fabry- Perot interferometric (EFPI) sensors have been very successfully used in measuring a wide range of physical and chemical parameters. However, these fibers can only sustain temperatures of 800 degrees C because of germanium thermal diffusion affecting both the attenuation and waveguide multi-mode properties of the fiber. Since sapphire has a melting point above 2000 degrees C, sapphire optical fiber can be potentially used up to 2000 degrees C in an EFPI scheme. We obtain a resolution of 0.02 micrometers with a dynamic range of 27 micrometers for micro-displacement measurement.

Citation Download Citation

Hai Xiao, Wei Zhao, Robert Lockhart, Jun Wang, and Anbo Wang "Absolute sapphire optical fiber sensor for high-temperature applications", Proc. SPIE 3201, Sensors and Controls for Advanced Manufacturing, (2 January 1998); https://doi.org/10.1117/12.298022

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