Kate Cornick

Experimental comparison of PMD-induced system penalty models

We present experimental investigations of polarization-mode dispersion (PMD)-induced system penalties arising from an all-order PMD source, for amplified spontaneous emission and thermally limited systems. Further, we compare the experimental first-order PMD-induced penalties with predictions from both the string length model and the modified quadratic model. We show that the both models are in good agreement with the experimental data. The major difference between the two models is in the measurement requirements, which are less stringent for the string length method

Experimental comparison of system penalties due to 1/sup st/ order and multi-order polarization mode dispersion

Using vectorially resolved launch SOP, we show that high order PMD, present in real fibers, introduces a deterministic correction to the accepted first-order system penalty, and an additional uniformly distributed scatter, uncorrelated to the second order PMD vector.

MLSE receiver tolerance to all-order polarization mode dispersion

We experimentally characterize a maximum likelihood sequence estimation (MSLE) based receivers tolerance to first- and all-order polarization mode dispersion (PMD). We show that the response of the MLSE receiver to first-order PMD can be characterized in two ways depending on the differential group delay (DGD). In addition we show that first-order PMD-induced system penalties dominate those from high-order PMD. High-order PMD induces a large system penalty only when the first-order penalty is small, or the DGD exceeds a bit period.

Quantifying the Dependence of Degree of Polarization on Polarization Mode Dispersion and the Optical Spectrum

We derive a new, simple and exact DOP model that separates contributions from PMD and the optical spectrum. We use the model to derive two quantitative measures of spectral tolerance to PMD.

Experimental comparison of feedback signals for monitoring polarization mode dispersion

We experimentally compare four PMD monitoring signals for systems with and without forward error correction and show that the recently proposed string length technique compares favorably to other methods, and is also independent of OSNR.

A Framework for Evaluating the System Penalty From Polarization-Mode Dispersion Using Different Performance Monitoring Techniques

We present a theoretical framework relating system penalties from polarization-mode dispersion (PMD) to various monitoring techniques for non-return-to-zero systems. The framework includes models for string length, radio-frequency spectral power, eye opening, and degree of polarization. We validate the models experimentally and show that they are interrelated by common constants specific to the system under investigation.

Comparison of Methods for Monitoring PMD-Induced Penalty

We present and verify theoretical models relating PMD-induced penalty with four different monitoring techniques, and show they interrelate through system specific constants. We then assess the robustness of each monitoring technique to various optical impairments.

Metastable States of MLSE Receiver Induced by Extreme PMD Conditions

We have measured the performance of a 10 Gb/s receiver incorporating maximum-likelihood sequence estimation (MLSE) under conditions of severe polarization-mode dispersion (PMD). We find that certain trajectories of PMD evolution can lead to metastable states of receiver operation.

All-order PMD penalty prediction using SOP string lengths

We use an exact measure of the SOP string length that incorporates effects due to all-orders of PMD, to predict the PMD-induced penalty and compare the results to the equivalent first order prediction.