PDL Emulator

The PMD-1000 is a flexible, digital PMD source that deterministically generates precise 1st order PMD up to 180 ps and 2nd order PMD up to 8100 ps2. Its quasi-continuous operation mode enables independent generation of first order and wavelength independent second order PMD for uniform coverage of the PMD space.
The PMD-1000 uses high speed ternary magneto optic crystals to generate PMD. The PMD switching time is as little as one millisecond, making the PMD-1000 the fastest PMD generator on the market
Above, the video shows a high speed scan of a trace of PMD values. Additional videos in the gallery (below) demonstrate high speed point to-point scanning and quick manual selection of values.
Its automatic polarization controller combined with before and after polarimeters enhances the instrument’s flexibility. For example, if the polarization controller is used to align and maintain the input SOP at 45° from the principal axis of the DGD element, the instrument creates the worst-case first order PMD effect. Alternatively, the controller can adjust and maintain the input SOP using the feedback from the rear polarimeter to either minimize or maximize the output DOP for each PMD setting. Minimizing the output DOP enables testing of the worst-case total PMD effect, while maximizing the DOP turns the PMDPro™ into a PMD compensator, allowing the user to obtain optimized PMD values for PMD compensation.
PMDPro™ can also perform PMD emulation by generating statistical PMD distributions. Finally, the polarization controller and polarimeters enable variable rate scrambling and deterministic polarization control functions, including trace generation and polarization stabilization at any SOP. PMDPro­™ makes your PMD related systems testing simple, fast, and professional.


Verifying system PMD tolerance
Stress test of PMD compensation circuits
PMDC optimization
Calibration source for PMD instruments

Key Features

• All digital design - no motors
• High speed PMD switching: 1 ms
• 1st and 2nd order PMD source/emulator
• Polarization scrambling

PDLE 101

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