Positioning method for dual Mach-Zehnder interferometric submarine cable security system

Shangran Xie; Min Zhang; Shurong Lai; Yanbiao Liao

doi:10.1117/12.850115

23 April 2010 Positioning method for dual Mach-Zehnder interferometric submarine cable security system

Shangran Xie, Min Zhang, Shurong Lai, Yanbiao Liao

Proceedings Volume 7677, Fiber Optic Sensors and Applications VII; 76770A (2010) https://doi.org/10.1117/12.850115
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Dual Mach-Zehnder interferometric fiber sensor is one of the appropriate solutions to the application of submarine cable security. While the seabed environment makes the vibration output a narrow bandwidth lowpass interference signal and these property makes the correlation based event positioning algorithm hard to design. A preprocessing method intends to increase signal power spectral range before correlation is proposed. A bandpass filter is imposed to enhance the effect of high frequency components, despite the filtered signal is different from the original one. A post-integration SNR threshold is calculated to determine the proper center frequency and bandwidth of the filter. Experiment results show a good accordance with theoretical prediction.

Citation Download Citation

Shangran Xie, Min Zhang, Shurong Lai, and Yanbiao Liao "Positioning method for dual Mach-Zehnder interferometric submarine cable security system", Proc. SPIE 7677, Fiber Optic Sensors and Applications VII, 76770A (23 April 2010); https://doi.org/10.1117/12.850115

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