Fiber Bragg grating sensor for the simultaneous measurement of stress and temperature in high temperature environment

Fang Li; Yuesong Jiang

doi:10.1117/12.790731

22 February 2008 Fiber Bragg grating sensor for the simultaneous measurement of stress and temperature in high temperature environment

Fang Li, Yuesong Jiang

Author Affiliations +

Proceedings Volume 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology; 66220C (2008) https://doi.org/10.1117/12.790731
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

A novel fiber Bragg grating sensor operating in the environment of high temperature is studied. And the sensor can realize the simultaneous measurement of stress and temperature. The sensing head is comprised of one metal strip, one adiabatic strip and two FBGs with the same specification. The metal strip converts the measured temperature into the strain of the FBG2, and the temperature will be related to the peak wavelength shift of the FBG2 induced by the strain. The sensed stress in the environment of high temperature is transferred into the longitudinal strain applied into the FBG1 and FBG2 through the adiabatic strip and the metal strip, respectively, which will induced the peak wavelength shifts of the two fiber Bragg gratings. In this way, we can know the stress according to the center-wavelength shift of the FBG1, and the temperature from the difference of the peak wavelength between the FBG1 and FBG2. Finally, by a simple simulation we proved the physics feasibility of the sensor and found the fiber Bragg grating sensor has a stress sensitivity of about 0.15pm per N, and a temperature sensitivity of about 4pm per °C. A temperature dynamic range of 900°C can be obtained.

Citation Download Citation

Fang Li and Yuesong Jiang "Fiber Bragg grating sensor for the simultaneous measurement of stress and temperature in high temperature environment", Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 66220C (22 February 2008); https://doi.org/10.1117/12.790731

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Temperature metrology

Fiber Bragg gratings

Metals

Sensors

Environmental sensing

Head

Computer simulations

Show All Keywords

Keywords/Phrases

Search In:

Publication Years