Home Optical T&M Polarisation Control & Emulation General Photonics PMD-1000 – PMD Source

General Photonics PMD-1000 – PMD Source

Product Code:
PMD-1000
Manufacturer: General Photonics Corporation
  • All digital design - no motors
  • High speed PMD switching: 1 ms
  • 1st and 2nd order PMD source/emulator
  • Polarisation scrambling

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The General Photonics 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.

Its automatic polarisation controller combined with before and after polarimeters enhances the instrument’s flexibility. For example, if the polarisation 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 minimise or maximise the output DOP for each PMD setting. Minimising the output DOP enables testing of the worst-case total PMD effect, while maximising the DOP turns the PMDPro™ into a PMD compensator, allowing the user to obtain optimised PMD values for PMD compensation.

PMDPro™ can also perform PMD emulation by generating statistical PMD distributions. Finally, the polarisation controller and polarimeters enable variable rate scrambling and deterministic polarisation control functions, including trace generation and polarisation stabilisation at any SOP. PMDPro­™ makes your PMD related systems testing simple, fast, and professional.

 APPLICATIONS

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

Setting PMD with Cursor:

Rapid Scan of 4 Values of PMD:

Operating Wavelength Range1

C band or L band

Insertion Loss 

5.0 dB (90 ps version)
5.5 dB (180 ps version)

Input Power Range

-10 to 10 dBm

Return Loss

50 dB

PDL

0.45 dB typical (90 ps version)
0.5 dB typical (180 ps version)

1st Order PMD Range

90 ps range 180 ps range

Discrete mode

0.357ps

0.714 ps

Quasi-continuous
mode

0.1 ps 0.2 ps

2nd Order PMD Range 

2000 ps2 (90 ps range) or 8100 ps2 (180 ps range)

PMD Variation Time

1 ms min.

SOP Alignment Accuracy2 

± 2°

SOP Tracking Speed

10 π/s

DOP Accuracy2 

± 2%

Optical Power Handling 

300 mW min.

Operating Temperature

10 to 50 °C

Storage Temperature

-20 to 60 °C

Communications Interfaces 

USB, RS-232, Ethernet, and GPIB
Front Panel Display  2 x 20 character LCD

Power Supply

100 – 240 VAC, 50 – 60 Hz

Dimensions

2U, 3/4 of 19” rack width
14" (L) x 14" (W) x 3.5" (H)

Notes:

1 Standard option: C band.
2 At 23 ± 5°C. 
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