Now showing items 1-4 of 4
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. ...
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 ...
Optical Frequency Domain Reflectometry: A review
In this paper, we discuss the operation principles, challenges and application areas of optical frequency domain reflectometry technique. A review of OFDR systems is given considering both Incoherent-OFDR and Coherent- ...
Analysis and suppression of nonlinear frequency modulation in an optical frequency-domain reflectometer
(Optical Society of America, 2009-03)
A new method for monitoring the nonlinearities perturbing the optical frequency sweep in high speed tunable laser sources is presented. The swept-frequency monitoring system comprises a Mach-Zehnder interferometer and ...