Home › Forums › SYSTEM › Compensation techniques › Reply To: Compensation techniques
Please find the attached files.
For the “Dispersion compensation pre post symmetrical.osd” example, when we compare the performance of NRZ and RZ, we normally set the input power of the fiber (launch power) to be the same. NRZ and RZ signals have different modulation efficiencies. Therefore, the modulated signals has different powers. My suggestion is adding an optical amplifier after the modulator and before the loop control, and set the power for both cases to be the same, as shown in the attached osd files. For the same launch power, RZ has a better performance than NRZ.
By the way RZ signal has a wider bandwidth than NRZ signal, therefore the bandwidth of the filter should be different for different cases.