Optical PMD Compensation Research Articles

PMD compensation up to second order by tracking the principle states of polarization using a two-section compensator

This paper presents a theoretical analysis of an optical polarization mode dispersion compensator comprised of two adjustable delay sections with a polarization controller in between. Not only the differential group delay of the fiber but also the rotation of the principle states of polarization within a bandwidth can be compensated by tracking the trajectory of the fiber output principle states of polarization around the carrier frequency. The theoretical analysis of the two-section compensator shows how to adjust its parameters. Based on numerical simulations applying a 10 Gbit/s NRZ transmission, we show the enlarged bandwidth of compensation in comparison to a simple first-order compensator.

Analysis of signal degree of polarization degradation used as control signal for optical polarization mode dispersion compensation

The basic property of degree of polarization (DOP) degradation of optical signal induced by polarization mode dispersion (PMD) in high-speed optical fiber transmission is investigated in detail. The DOP of the optical signal reflects the degree of waveform degradation caused by PMD, therefore, it is proposed to be used as the control signal judging the best compensation point for the optical adaptive PMD compensation techniques. However, the signal DOP is not only affected by PMD, but also by various factors, such as the modulation format, modulator chirp, fiber nonlinearity, amplified spontaneous emission (ASE), and so on. We use numerical simulations and experiments to explore the basic DOP property to detect PMD with these factors. We also show that using the signal DOP as control signal is especially useful for the optical duo-binary modulation because of its high sensitivity and wide PMD detection range.

Statistical study of dynamic polarization-mode dispersion (PMD) compensation based on degree of polarization monitoring

We experimentally and numerically assess the performance of an optical PMD compensator based on the degree of polarization measurement. Assuming a maximum 3 dB power penalty and 10−3% outage probability, we show that the maximum tolerable PMD value can be extended from 16 to 33% of the bit duration without and with compensation, respectively. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 26: 41–43, 2000.

Long Term Field Demonstration of Optical PMD Compensation on an lnstalled OC-192 Link

Long Term Field Demonstration of Optical PMD Compensation on an lnstalled OC-192 Link