title: Identification method of non-reflective faults based on index distribution of optical fibers.
abstract: 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.
authors: Wonkyoung
authors: W
authors: Lee
authors: Seung Il
authors: SI
authors: Myong
authors: Jyung Chan
authors: JC
authors: Lee
authors: Sangsoo
authors: S
authors: Lee