Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Field test of a distributed fiber-optic intrusion sensor system for long perimeters

Not Accessible

Your library or personal account may give you access

Abstract

Field tests in desert terrain of a distributed sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (ϕ- OTDR) are described. The sensing element is a single-mode telecommunications fiber in a 4.5  mm diameter cable buried in a trench filled with loose sand. Light pulses from a continuous-wave Er:fiber Fabry–Perot laser with a narrow (<3  kHz) instantaneous linewidth and low (few kilohertz per second) frequency drift are injected into one end of the fiber, and the orthogonal polarizations of the backscattered light are monitored with separate receivers. Localized phase changes in the optical carrier are sensed by subtracting a ϕ- OTDR trace from an earlier stored trace. High sensitivity and consistent detection of intruders on foot and of vehicles traveling down a road near the cable line was realized over a cable length of 8.5  km and a total fiber path of 19 km in real time.

© 2007 Optical Society of America

Full Article  |  PDF Article
More Like This
Polarization discrimination in a phase-sensitive optical time-domain reflectometer intrusion-sensor system

Juan C. Juarez and Henry F. Taylor
Opt. Lett. 30(24) 3284-3286 (2005)

Automatic traffic monitoring by ϕ-OTDR data and Hough transform in a real-field environment

Ester Catalano, Agnese Coscetta, Enis Cerri, Nunzio Cennamo, Luigi Zeni, and A. Minardo
Appl. Opt. 60(13) 3579-3584 (2021)

Influences of laser source on phase-sensitivity optical time-domain reflectometer-based distributed intrusion sensor

Xiang Zhong, Chunxi Zhang, Lijing Li, Sheng Liang, Qin Li, Qiying Lü, Xiuxin Ding, and Qiaoyuan Cao
Appl. Opt. 53(21) 4645-4650 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved