Other emulators arbitrarily vary couplers and birefringent sections to generate randomly changing PMD states. These emulators may reproduce PMD statistics but are indeterminate, incapable of calculating their PMD state. By contrast, only the NRT-PMDR, provides time series output of the emulated 1st and 2nd-order PMD states. The time series, including a time stamp, can be saved to a file for further analysis or correlation with bit-error rate degradations of the component/system undergoing PMD testing and characterization.
‘JPDF-walker’ emulates PMD dynamics and PMD statistics for both DGD and SOPMD
Emulation of a wide range of mean PMD values
Software enhancement/upgrade: compatible with all New Ridge Technologies’ PMD Sources
The only PMD emulator that calculates and ‘knows’ its PMD state at all times
- Uses NRT’s unique and patented Coherent PMD generation technology
- Simple Graphic User Interface
- Dynamically varies PMD state
- Displays all generated states and trajectory of recent states
- Displays times series of DGD vs time Displays times series of SOPMD vs time Generates PMD time series file
- Four dynamic PMD transition speeds
- Self-calibration to transponder wavelength
In the figures below the NRT-PMDR’s random walk distributions for 1st and 2nd-order PMD are compared to the theoretical distributions for several different mean fiber PMD values (on the NRT-40095A). The results for mean fiber PMD values of 1ps, 4ps, 6ps, 9ps and 12ps are shown in the figure, together with the theoretical model. These graphs prove the validity of the NRT random walk model and code accuracy.
New Ridge Technologies, the worldwide leader in PMD tolerance testing of transponders and systems