Distributed fiber optic perturbation locating sensor based on dual Mach-Zehnder interferometer

Guangming Luo; Chunxi Zhang; Lijing Li; Zongfeng Ma; Tian Lan; Chen Li; Wentai Lin

doi:10.1117/12.790814

22 February 2008 Distributed fiber optic perturbation locating sensor based on dual Mach-Zehnder interferometer

Guangming Luo, Chunxi Zhang, Lijing Li, Zongfeng Ma, Tian Lan, Chen Li, Wentai Lin

Proceedings Volume 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology; 66220Z (2008) https://doi.org/10.1117/12.790814
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

This paper studies a distributed fiber optic perturbation locating sensor used for security system, which is based on dual Mach-Zehnder interferometers. This system consists of two Mach-Zehnder interferometers with the common sensing arm, reference arm, two couplers and one laser source. This kind of distributed fiber optic perturbation locating sensor is very suitable for the measurement of the phase shift induced by some perturbation such as strain and vibration. When perturbation exerts on the sensing arm, a time delay will generate between the two output signals of the dual Mach-Zehnder interferometers. From the time delay, the location of the perturbation can be obtained. Experimenting on the type disturbance's optic cable and forcing on the 18.46km long distance fiber, the system correctly shows the position for real time and the average error is 390m. The experiment shows that the system can be applicable for locating on 40km distance fiber cable when the power of the laser resource increases to 300μW.

Citation Download Citation

Guangming Luo, Chunxi Zhang, Lijing Li, Zongfeng Ma, Tian Lan, Chen Li, and Wentai Lin "Distributed fiber optic perturbation locating sensor based on dual Mach-Zehnder interferometer", Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 66220Z (22 February 2008); https://doi.org/10.1117/12.790814

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