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Improve doc to state when tilt is vs wavelength

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add some text in the docs to explain that tilt can be expressed
vs freq or lambda depending on context:
advanced_model expresses dgt as a function of frequency,
while tilt target is still defined vs wavelength (common usage).

Change the variable to have explicit name when it is per wavelength,
or add a comment to help identifyper wavelength or per frequency
variables.

Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com>
Change-Id: I7727f00b38244152b95954e981cc9da096bb3d1d
This commit is contained in:
EstherLerouzic
2024-04-26 10:12:25 +02:00
committed by Esther Le Rouzic
parent ce21609fec
commit ee9af69558
3 changed files with 11 additions and 10 deletions
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8
gnpy/core/elements.py
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@@ -757,7 +757,7 @@ class Edfa(_Node):
operational = {}
self.variety_list = kwargs.pop('variety_list', None)
super().__init__(*args, params=EdfaParams(**params), operational=EdfaOperational(**operational), **kwargs)
self.interpol_dgt = None # interpolated dynamic gain tilt
self.interpol_dgt = None # interpolated dynamic gain tilt defined per frequency on amp band
self.interpol_gain_ripple = None # gain ripple
self.interpol_nf_ripple = None # nf_ripple
self.channel_freq = None # SI channel frequencies
@@ -780,7 +780,7 @@ class Edfa(_Node):
self.delta_p = self.operational.delta_p
# self._delta_p contains computed delta_p during design even if power_mode is False
self._delta_p = None
self.tilt_target = self.operational.tilt_target
self.tilt_target = self.operational.tilt_target # defined per lambda on the amp band
self.out_voa = self.operational.out_voa
self.propagated_labels = [""]
@@ -792,7 +792,7 @@ class Edfa(_Node):
'operational': {
'gain_target': round(self.effective_gain, 6) if self.effective_gain else None,
'delta_p': self.delta_p,
'tilt_target': self.tilt_target,
'tilt_target': self.tilt_target, # defined per lambda on the amp band
'out_voa': self.out_voa
},
'metadata': {
@@ -1022,7 +1022,7 @@ class Edfa(_Node):
p = polyfit(self.channel_freq, self.interpol_dgt, 1)
dgt_slope = p[0]
# Calculate the target slope
# Calculate the target slope defined per frequency on the amp band
targ_slope = -self.tilt_target / (self.params.f_max - self.params.f_min)
# first estimate of DGT scaling