Cart (Loading....) | Create Account
Close category search window
 

Sensitive linear electric current measurement using two metal-coated single-mode optical fibers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Ching-Tarng Shyu ; Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Wang, Likarn

A new fiber-optic sensing technique for electric current measurement is proposed in this paper. The technique is based on the use of the sensitive thermal detection in which two metal-coated single-mode fibers in an interferometer of Mach-Zehnder type are used. In the proposed method, a constant bias current with enough accuracy is employed to amplify the detected phase variation caused by the current to be measured. The experimental results prove that not only can the sensitivity of measurement be well enhanced, but also that a wide dynamic range and good linearity can be obtained using the proposed method. In the case of coating resistances of 60.6 and 60.56 Ω, the measurement sensitivity can be enhanced by more than 20 times if a bias current of 50 mA is used for measuring 4-mA dc current, compared to the traditional method in which only one fiber arm of the interferometer is coated with metal. In the linear measurement of electric current ranging from ~0.01 to ~10 mA the current-to-phase sensitivity is found to equal 1.13×104 rad/amp

Published in:

Lightwave Technology, Journal of  (Volume:12 ,  Issue: 11 )

Date of Publication:

Nov 1994

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.