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Optical Transmission, Switching, and Subsystems II
Currently existing dense wavelength division multiplexing (DWDM) networks start to migrate from numerous point-topoint links towards meshed, transparent, optical networks with dynamically routed light paths. This increases the need for appropriate network monitoring and supervision methods. Optical performance monitoring (OPM) has to be costeffective. Thus additional spendings for OPM have to be significantly smaller than the savings in OPEX due to increased reliability and ease of operation,doi:10.1117/12.579499 fatcat:kvwokna3jfeodlp5kho3v52kdm