Analyzing Distributed Vibrating Sensing Technologies in Optical Meshes.

Saifur Rahman,Ammar Armghan,Muhammad Irfan,Salim Nasar Faraj Mursal,Mohammed Shahed Akond,Fazal Muhammad,Adam Glowacz,Fahad Salem Alkahtani,Farman Ali,Amjad Ali

doi:10.3390/mi13010085

Abstract

Hundreds of kilometers of optical fibers are installed for optical meshes (OMs) to transmit data over long distances. The visualization of these deployed optical fibers is a highlighted issue because the conventional procedure can only measure the optical losses. Thus, this paper presents distributed vibration sensing (DVS) estimation mechanisms to visualize the optical fiber behavior installed for OMs which is not possible by conventional measurements. The proposed technique will detect the power of light inside the optical fiber, as well as different physical parameters such as the phase of transmitted light inside the thread, the frequency of vibration, and optical losses. The applicability of optical frequency domain reflectometry (OFDR) and optical time-domain reflectometry (OTDR) DVS techniques are validated theoretically for various state detection procedures in optical fibers. The simulation model is investigated in terms of elapsed time, the spectrum of a light signal, frequency, and the impact of many external physical accidents with optical fibers.

Highlights

This declares that fiber cables applied for optical communications are disturbed in view of physical vibrations. These vibrations have the potential to identify the fault and its location [8]. Based on these properties of vibration, this paper investigates the development of distribution vibration sensing (DVS) technologies using optical time-domain reflectometry (OTDR) and optical frequency domain reflectometry (OFDR) procedures for evaluating the fault inside the optical fiber
When applying the optical cables for long-range transmission, the optical fiber may be disturbed by external physical loads
distributed vibration sensing (DVS) technologies based on OTDR and OFDR

Summary

Introduction

Several techniques to identify the dispersion and scattering issues inside optical fibers have been employed for a long-distance communication system, including their locations [1,2]. Out of these studied techniques, many researchers have addressed optical frequency domain reflectometry (OFDR) and optical time-domain reflectometry (OTDR). If an abnormality or failure occurs inside the optical fiber, these techniques are used to identify the losses and location with the help of optical power [4,5]. For measuring the dynamic strain of an optical fiber, a vibration procedure is employed on the optical fiber in terms of time variation estimations of the dispersed light waveform.

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Conclusion