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Novel monitoring technique for passive optical networks based on optical frequency domain reflectometry and fiber bragg gratings
(Optical Society of America, 2010-07)
An efficient monitoring method having a very short measurement time (a few seconds) is proposed. The equal-length branches can be effectively monitored, but also the information of temperature at any place in the network ...
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. ...