Open AccessIdentification method of non-reflective faults based on index distribution of optical fibers
Author(s) -
Wonkyoung Lee,
Seung Il Myong,
Jyung Chan Lee,
Sang-Soo Lee
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.000325
Subject(s) - optical time domain reflectometer , optics , cable gland , optical fiber , fault (geology) , wavelength , materials science , optical fiber cable , upgrade , fiber , refractive index , graded index fiber , computer science , fiber optic sensor , telecommunications , physics , geology , seismology , composite material , operating system
This paper investigates an identification method of non-reflective faults based on index distribution of optical fibers. The method identifies not only reflective faults but also non-reflective faults caused by tilted fiber-cut, lateral connector-misalignment, fiber-bend, and temperature variation. We analyze the reason why wavelength dependence of the fiber-bend is opposite to that of the lateral connector-misalignment, and the effect of loss due to temperature variation on OTDR waveforms through simulation and experimental results. This method can be realized by only upgrade of fault-analysis software without the hardware change, it is, therefore, competitive and cost-effective in passive optical networks.