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We resolved signal degradations due to DGD and OSNR from a single monitor source.We verified a precision of +/-0.2dB of Q-value experimentally with a monitor prototype and 160Gb/s signal.
Optical wiring conditions are investigated numerically and experimentally with a viewpoint of MPI induced transmission performance degradation. We reveal the impact of the interval of the bending port...
We studied an in-service signal quality estimation method by using wavelength resolved SOP vector trajectories on Poincare Sphere and successfully distinguished PMD induced signal degradation with suf...
We present a technique of using asynchronously generated constellation pattern to simultaneously monitor CD and first order PMD in DQPSK systems. By characterizing deformations in the patterns, the am...
A technique using artificial neural networks to simultaneously identify OSNR, CD, and PMD from eye-diagram parameters is demonstrated both via simulation and experimentally in 40 Gb/s OOK and DPSK sys...

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