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Telecominfraproject / oopt-gnpy

Optical Route Planning Library, Based on a Gaussian Noise Model
http://telecominfraproject.com
BSD 3-Clause "New" or "Revised" License
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EDFA Gain Tilt Profile Error #471

Open AndreaDAmico opened 12 months ago

AndreaDAmico commented 12 months ago

Bug Description The current implementation consider a given value of DGT for evaluating the Gain/Tilt profile along frequency, which provides roughly 1dB Tilt mismatch between expected and evaluated values.

To Reproduce the Bug Steps to reproduce the behavior:

  1. Consider one EDFA
  2. Evaluate the DGT measuring two gain profiles with distinct values of target tilt and a fixed value of target gain (see R. D. Muro, “The er3+-fiber gain coefficient derived from a dynamic gain tilt technique”, JLT, vol. 18, no. 3, pp. 343–347, 2000. DOI: 10. 1109/50.827506)
  3. Set the measured DGT in the EDFA input
  4. Compare the GNPy evaluated and the measured gain profiles

gain_profile

Proposed Solution An advanced implementation of EDFA gain profile evaluation is shown in the figure.