# Datasheet

# Overview

This powerful tool combines:

1. Measurement results from PMDS in the form (DGD, 2nd-order PMD, Penalty)

2. PMD dynamics corresponding to a mean fiber PMD, <τ>

3. Allowable system PMD margin.

The OPC is calculated by applying our PMD random-walk model, for a fiber with PMD <τ> to the PMDS-measured transponder tolerance data. Each time the

random walk enters the region beyond the PMD margin an outage is started (red arrows). The calculation simulates over 1,000,000 PMD steps (>100 years of PMD dynamics) to calculate:

1. Total Outage Probability (time/year)

2. Mean number of PMD Outages/year

3. PMD Outage Duration (statistics)

4. Time between PMD Outages (statistics)

# Key Applications & Benefits

# Key Applications & Benefits

– Simple, straightforward quantities for the performance degradation for any fiber <τ> .

– Quantitatively optimize PMD mitigation or EDC algorithm.

– Compare PMD tolerance of different modulation formats.

– Take the system data once, and use the NRT-OPC to calculate performance in any situation.

– Enables route engineering & span design for carriers.

– Enables system design by the equipment manufacturers by adjusting the allowable margins for each wavelength channel.