Noise suppression of Rayleigh scattering enhanced Φ-OTDR sensing system

Kunbi Zhu; Meng Tian; Wenzhu Huang; Wentao Zhang

doi:10.1117/12.2691667

27 September 2023 Noise suppression of Rayleigh scattering enhanced Φ-OTDR sensing system

Kunbi Zhu, Meng Tian, Wenzhu Huang, Wentao Zhang

Proceedings Volume 12813, Asia-Pacific Optical Sensors Conference (APOS 2023); 1281305 (2023) https://doi.org/10.1117/12.2691667
Event: Asia Pacific Optical Sensors Conference 2023, 2023, Tianjin, China

Abstract

This paper reports a noise suppression technique for Φ-OTDR based on Rayleigh scattering enhanced points. Using femtosecond laser to write scattering-enhanced points (SEPs) in the sensing fiber of Φ-OTDR, each SEP is composed of three points spaced 4mm apart. Experimental results show that the SNR of Φ-OTDR based on scattering-enhanced fiber is improved by 24 dB, and the system phase noise is better than -80 dB (re: 1 rad/√Hz), the three-point structure has better stability and higher reinforcement effect. Compared with the unenhanced Φ-OTDR system, the noise is reduced by about 17 dB.

Citation Download Citation

Kunbi Zhu, Meng Tian, Wenzhu Huang, and Wentao Zhang "Noise suppression of Rayleigh scattering enhanced Φ-OTDR sensing system", Proc. SPIE 12813, Asia-Pacific Optical Sensors Conference (APOS 2023), 1281305 (27 September 2023); https://doi.org/10.1117/12.2691667

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