Experimental demonstration of monitoring PDL value and location using DSP-based longitudinal power estimation with linear least squares
M Takahashi, Takeo Sasai, Etsushi Yamazaki, Yoshiaki Kisaka
Abstract
We experimentally demonstrate fiber-longitudinal monitoring that visualizes polarization-wise signal powers. The method is based on linear least squares and successfully estimates the position and amount of PDL in a multi-span optical link. Results show accurate PDL estimation with errors below 0.5 dB at 1-km granularity.
Topics & Concepts
Digital signal processingLeast-squares function approximationPower (physics)Value (mathematics)Non-linear least squaresComputer scienceStatisticsMathematicsEstimation theoryPhysicsComputer hardwareQuantum mechanicsEstimatorMicrowave and Dielectric Measurement TechniquesWireless Power Transfer SystemsAdvanced Electrical Measurement Techniques