Distributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system

Zhang, Ziyi; Bao, Xiaoyi

doi:10.1364/oe.16.010240

Cited by 188 publications

(71 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the piezo-electric and the piezo-resistive accelerometers are widely used, different studies [1][2][3][4][5] have considered the use of optical fibers to measure dynamic accelerations. Optical fibers allow distributed and quasi-distributed measurements.…”

Section: Introductionmentioning

confidence: 99%

Design and test of a novel accelerometer made-up of an optical-fiber embedded within a polymer resin

Tihon

Verlinden

Kouroussis

et al. 2015

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. This paper presents a transducer for an optical-fiber accelerometer based on a polarization analysis. The transducer is made up of a fiber section embedded within a resin placed between two metallic pieces. Due to the acceleration, the resin is crushed between the metallic pieces, deforming the fiber section and inducing birefringence in the latter. This birefringence modifies the light polarization state, which can be used as an acceleration measurement. The sensor characteristics (sensitivity and resonance frequency) are numerically and experimentally determined. Sine accelerations at 120 Hz with amplitudes going from 5 m/s 2 to 13 m/s 2 have been successfully measured. The resonance frequency for the transducer crushing mode is above 5000 Hz, but low-frequency vibration modes exist, disturbing the measurements.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and test of a novel accelerometer made-up of an optical-fiber embedded within a polymer resin

Tihon

Verlinden

Kouroussis

et al. 2015

MATEC Web of Conferences

View full text Add to dashboard Cite

show abstract

“…The traditional OTDR, using incoherent light, can only measure intensity of vibrations along the fiber. A phase-sensitive OTDR(φ-OTDR) system can detect the vibrations of up to 1kHz with a resolution of 5m [14]. Narrowlinewidth technology is the key to φ-OTDR system to better responding to phase changes of light.…”

Section: Introductionmentioning

confidence: 99%

Distributed fiber-optic sensing using double-loop Sagnac interferometer

Zhu

2014

2014 9th IEEE Conference on Industrial Electronics and Applications

View full text Add to dashboard Cite

The significant advances of Fiber optic technology are making its comprehensive applications, including security monitoring, pipeline maintenance and communication cable protection, etc. Many of these applications operate in harsh environments over long distances. This leads to low SNR, making high-precision positioning a great challenge. In this paper, a distributed double-loop Sagnac interferometer system based fiber optic sensor is designed and validated in field for detecting and locating intruders. First, the double-loop structure is improved by adding a certain length of transmission fiber in the start and end of each loopwhich enhances the linear relationship between amplitude and distance. Second, in order to enhance the SNR, a spectral subtraction pre-processing method is provided. Through the above methods, precise location of a disturbance is guaranteed. Results of field tests show that the SNR is greatly improved and the system could achieve spatial resolution of ±15m per kilometer.

show abstract

“…These two features make such systems very complex to implement and greatly increases their cost. Polarization-based intrusion sensors have also been developed [6]- [8]. However, in [7] and [8], the measurement is also phase-sensitive.…”

Section: Introductionmentioning

confidence: 99%

“…However, in [7] and [8], the measurement is also phase-sensitive. In [6], the complexity principally comes from the signal processing technique, which requires to In this paper we propose a novel kind of intrusion sensor, based on the SOP and that uses a broadband source (commercially available OTDR) rather than a very high-cost narrow linewidth laser source. The set-up can be very easily implemented and is cost-effective.…”

Section: Introductionmentioning

confidence: 99%

Development of an Intrusion Sensor Based on a Polarization-OTDR System

2012

View full text Add to dashboard Cite

In this paper, we demonstrate the possibility of using a polarization optical time domain reflectometry (POTDR) system as an intrusion sensor. This system measures the evolution of the state of polarization (SOP) along the fiber length. In the typical application of fence monitoring, an intrusion leads to a modification of the SOP, which appears, after a temporal averaging, as a detectable flattening of the POTDR trace starting from the intrusion position. Experiments show that an intrusion leading to a 1.5 cm fiber displacement can be detected, using a 5 s averaging and 50 ns pulses with an error on the intrusion localization of the order of 5 m.

show abstract

Distributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system

Cited by 188 publications

References 7 publications

Design and test of a novel accelerometer made-up of an optical-fiber embedded within a polymer resin

Design and test of a novel accelerometer made-up of an optical-fiber embedded within a polymer resin

Distributed fiber-optic sensing using double-loop Sagnac interferometer

Development of an Intrusion Sensor Based on a Polarization-OTDR System

Contact Info

Product

Resources

About