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DGD-1000 PMD Source

Product information "DGD-1000 PMD Source"

DGD Range 0-200, 0-44 ps; DGD Resolution 0.2 ps; Single Band C, L, O, Dual Band CL; Max. IL 3.5 dB; Max. PDL 0.3 dB; RL >50 dB

Polarization mode dispersion (PMD) can seriously degrade the quality of high-speed fiber-optic data transmission. High-speed transceivers must meet stringent standards for PMD tolerance.

General Photonics’ DGD-1000 PMD Source/Emulator accurately and repeatably generates both high and low values of differential group delay (DGD) or first-order PMD. Both the DGD and PDL are very stable over time and wavelength within the performance band.

The DGD-1000 PMD source/emulator is available in different versions to accommodate the need for different wavelengths and DGD ranges.

Key Features:

  • Generates Differential Group Delay DGD up to 400 ps
  • DGD Range: 0 to 200 ps, 0 to 400 ps
  • DGD Resolution: 0.2 ps
  • DGD Change Rate: Up to 64 ps/s
  • Wavelength Range Single Band: C Band, L Band or O Band
  • Wavelength Range Dual Band: CL Bands
  • Insertion Loss (IL): ≤3.5 dB
  • Very Low Insertion Loss (IL) Variation Over DGD Range: 0.1 dB typ.
  • Very Low Polarization Dependent Loss (PDL) Over DGD Generation Range: 0.3 dB max., 0.1 dB typ.
  • Return Loss: >50 dB
  • Slow SOP Variation: <1 rad/min
  • Small DGD Variation Over Time: <0.1 ps Over 8 Hours
  • Extended Version Can Cover up to 600 ps as Special Order

Applications: System PMD Tolerance Testing; 1st Order PMD Performance Simulation

Manufacturer "Luna"
Headquartered in Roanoke, VA, USA, Luna develops, manufactures and markets high-definition fiber optic sensing products and fiber optic test and measurement instrumentation . Luna's products are used to measure, monitor, protect and improve critical processes in the healthcare, telecommunications, energy and defense markets. Luna has become a recognized leader in transitioning science to solutions. Luna’s high-definition fiber optic sensing technology allows engineers to test, modify and qualify their designs; efficiently, effectively, and accurately. The HYPERION series of fiber optic sensing interrogators provide many of the advantages of fiber optic systems and distinguishes itself by virtue of high spatial resolution. On the test and measurement side, Luna provides diagnostic and test instrumentation that enables the complete characterization of optical components, assemblies and short-haul networks; providing substantial cost and time savings in the development, production, and maintenance of optical network equipment. Optical backscatter reflectometers (OBR series) enable ultra-high resolution reflectometry with backscatter level sensitivity, while lightwave component and optical vector analyzers extend Luna’s industry-leading optical frequency domain reflectometry (OFDR) platform to manufacturing test and quality control applications for passive optical components.
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PDL Dynamic Range 0.1-20 dB; PDL Resolution 0.1 dB; C-, L-Band; Max. IL 2 dB; PDL Switching Time ≤5 ms; Residual PDM <0.1 ps; RL >50 dB High-speed fiber optic transceivers, including those deploying coherent detection technology for 40 Gbit/s and 100 Gbit/s data transmission, must meet stringent PDL (polarization dependent loss) tolerance specifications. In addition, the PDL tracking speed and response time of the PDL mitigation algorithm of a coherent detection receiver must be quantified. General Photonics’ PDLE-101 PDL emulator is specially designed for such PDL-related tests. This PDL source/ emulator can generate individual PDL values between 0 and 20 dB, with a resolution of 0.1 dB for PDL tolerance testing. It can also generate variable PDL with user defined range, waveform, and speed for PDL tracking speed and recovery time tests. The PDLE-101 PDL emulator can be controlled via the front panel keypad or by remote control via USB, RS-232, GPIB, or Ethernet interfaces. The residual PMD of the unit is less than 0.1 ps. Key Features: High PDL (Polarization Dependent Loss) Resolution: 0.1 dB Wide PDL Dynamic Range: 0.1 to 20 dB High Speed, PDL Switching Time: 5 ms max., 1 ms typ. PDL Waveforms: Sine, Square, Triangle Random PDL Generation Wavelength Range: C-Band or L-Band Max. Insertion Loss (IL): 2 dB @ PDL = 0, Excluding Connectors Low Residual PMD: <0.1 ps @ PDL = 0 Return Loss: >50 dB Fiber Type: SMF-28 Fiber Connector Type: FC/PC, FC/APC, SC/PC, SC/APC Optical Power Handling: 500 mW Applications: PDL Tolerance Test; PDL Tracking Speed and Recovery Time Tests; PDL Emulation; Code Development for PDL Compensation in Coherent Systems; System PDL Response Test
Product number: SW11272
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