Benjamin J. Puttnam

Fast Equalizer Kernel Initialization for Coherent PDM-QPSK Burst-mode Receivers Based on Stokes Estimator

A novel algorithm for polarization estimation in Stokes space is proposed. We show that under high OSNR, four estimation points are enough to reliably initialize the CMA equalizer.

Supplementary transient suppression in a Burst-mode EDFA using optical feedback

We extend the performance investigation of a burst-mode EDFA to µs-ms timescales applicable full rang of dynamic optical networks and, in combination with optical gain-clamping, demonstrate superior performance compared to a conventional EDFA.

Spectral efficiency in crosstalk-impaired multi-core fiber links

We review the latest advances on ultra-high throughput transmission using crosstalk-limited single-mode multicore fibers and compare these with the theoretical spectral efficiency of such systems. We relate the crosstalkimposed spectral efficiency limits with fiber parameters, such as core diameter, core pitch, and trench design. Furthermore, we investigate the potential of techniques such as direction interleaving and high-order MIMO to improve the throughput or reach of these systems when using various modulation formats.