Now showing items 1-4 of 4
Optical layer monitoring in passive optical networks (PONs): A review
Motivations, challenges and requirements of optical layer monitoring in PONs are discussed. An exhaustive review of monitoring systems is given considering both Time-Division Multiplexed PON (TDM-PON) and Wavelength-Division ...
Centralised optical monitoring of tree-structured passive optical networks using a raman-assisted OTDR
Monitoring of tree-structured Passive Optical Networks from a central office is difficult to achieve using a standard OTDR. Switchable reflective elements placed at the ONU can help to discriminate between the branches. ...
Rayleigh-based optical reflectometry techniques for distributed sensing applications
(Selcuk University, 2018-10)
In this paper, we discuss the operation principles, sensing mechanisms, challenges and application areas of the optical reflectometry techniques exploiting Rayleigh scattering phenomenon, considering both time- and ...
Laboratory evaluation of a phase-OTDR setup for railway monitoring applications
Phase-sensitive optical time-domain reflectometry (phase-OTDR) has recently drawn increased attention for applications within the railway transportation sector. In this paper we present a laboratory approach to demonstrate ...