Digital Backpropagation for Optical Path Monitoring: Loss Profile and Passband Narrowing Estimation
Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Shuto Yamamoto, Hideki Nishizawa, Yoshiaki Kisaka
Abstract
We propose an optical-path backpropagation algorithm that enables monitoring the loss profile along fibres and the individual frequency-detuning of cascaded optical filters in multi-span links. The method is based on the learning of backpropagation with complex-valued FIR filters and successfully identifies an anomaly optical filter.
Topics & Concepts
BackpropagationPassbandComputer sciencePath (computing)Optical filterFilter (signal processing)Propagation delayElectronic engineeringArtificial intelligenceArtificial neural networkOpticsBand-pass filterEngineeringComputer visionPhysicsComputer networkOptical Network TechnologiesAdvanced Photonic Communication SystemsAdvanced Optical Network Technologies