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oopt-gnpy/tests/test_equalization.py
EstherLerouzic 48e3f96967 add equalization per constant ratio power/slot_width 
Constant power per slot_width uses the slot width instead of
baud rate compared to PSD.

This is the equalization used in OpenROADM

add tests for constant power per slot width equalization

Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com>
Change-Id: Ie350e4c15cb6b54c15e418556fe33e72486cb134
2023-01-30 18:03:58 +01:00

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# @Author: Esther Le Rouzic
# @Date: 2019-05-22
"""
@author: esther.lerouzic
checks that new equalization option give the same output as old one:
"""
from pathlib import Path
import pytest
from numpy.testing import assert_allclose, assert_array_equal, assert_raises
from numpy import array
from gnpy.core.utils import lin2db, automatic_nch, dbm2watt, power_dbm_to_psd_mw_ghz, watt2dbm, psd2powerdbm
from gnpy.core.network import build_network
from gnpy.core.elements import Roadm
from gnpy.core.info import create_input_spectral_information, Pref, create_arbitrary_spectral_information, \
ReferenceCarrier
from gnpy.core.equipment import trx_mode_params
from gnpy.core.exceptions import ConfigurationError
from gnpy.tools.json_io import network_from_json, load_equipment, load_network, _spectrum_from_json, load_json
from gnpy.topology.request import PathRequest, compute_constrained_path, propagate
TEST_DIR = Path(__file__).parent
EQPT_FILENAME = TEST_DIR / 'data/eqpt_config.json'
NETWORK_FILENAME = TEST_DIR / 'data/testTopology_expected.json'
@pytest.mark.parametrize('degree, equalization_type, target, expected_pch_out_dbm, expected_si',
[('east edfa in Lannion_CAS to Morlaix', 'target_pch_out_db', -20, -20, [-20, -20, -20, -20, -20]),
('east edfa in Lannion_CAS to Morlaix', 'target_psd_out_mWperGHz', 5e-4, -17.9588,
[-17.9588, -16.7778, -14.9485, -16.7778, -17.9588]),
('east edfa in Lannion_CAS to Morlaix', 'target_out_mWperSlotWidth', 3e-4, -18.2390,
[-19.4885, -18.2390, -16.4781, -18.2390, -19.4885]),
('east edfa in Lannion_CAS to Corlay', 'target_pch_out_db', -20, -16, [-16, -16, -16, -16, -16]),
('east edfa in Lannion_CAS to Corlay', 'target_psd_out_mWperGHz', 5e-4, -16, [-16, -16, -16, -16, -16]),
('east edfa in Lannion_CAS to Corlay', 'target_out_mWperSlotWidth', 5e-4, -16, [-16, -16, -16, -16, -16]),
('east edfa in Lannion_CAS to Stbrieuc', 'target_pch_out_db', -20, -17.16699,
[-17.16698771, -15.98599459, -14.15668776, -15.98599459, -17.16698771]),
('east edfa in Lannion_CAS to Stbrieuc', 'target_psd_out_mWperGHz', 5e-4, -17.16699,
[-17.16698771, -15.98599459, -14.15668776, -15.98599459, -17.16698771]),
('east edfa in Lannion_CAS to Stbrieuc', 'target_out_mWperSlotWidth', 5e-4, -17.16699,
[-17.16698771, -15.98599459, -14.15668776, -15.98599459, -17.16698771])])
@pytest.mark.parametrize('delta_pdb_per_channel', [[0, 0, 0, 0, 0], [1, 3, 0, -5, 0]])
def test_equalization_combination_degree(delta_pdb_per_channel, degree, equalization_type, target,
expected_pch_out_dbm, expected_si):
"""Check that ROADM correctly computes power of thr reference channel based on different
combination of equalization for ROADM and per degree
"""
roadm_config = {
"uid": "roadm Lannion_CAS",
"params": {
"per_degree_pch_out_db": {
"east edfa in Lannion_CAS to Corlay": -16
},
"per_degree_psd_out_mWperGHz": {
"east edfa in Lannion_CAS to Stbrieuc": 6e-4
},
equalization_type: target,
"add_drop_osnr": 38,
"pmd": 0,
"pdl": 0,
"restrictions": {
"preamp_variety_list": [],
"booster_variety_list": []
}
}
}
roadm = Roadm(**roadm_config)
frequency = 191e12 + array([0, 50e9, 150e9, 225e9, 275e9])
slot_width = array([37.5e9, 50e9, 75e9, 50e9, 37.5e9])
baud_rate = array([32e9, 42e9, 64e9, 42e9, 32e9])
signal = dbm2watt(array([-20.0, -18.0, -22.0, -25.0, -16.0]))
ref_carrier = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
pref = Pref(p_span0=0, p_spani=0, ref_carrier=ref_carrier)
si = create_arbitrary_spectral_information(frequency=frequency, slot_width=slot_width,
signal=signal, baud_rate=baud_rate, roll_off=0.15,
delta_pdb_per_channel=delta_pdb_per_channel,
tx_osnr=None, ref_power=pref)
to_json_before_propagation = {
'uid': 'roadm Lannion_CAS',
'type': 'Roadm',
'params': {
equalization_type: target,
'restrictions': {'preamp_variety_list': [], 'booster_variety_list': []},
'per_degree_pch_out_db': {
'east edfa in Lannion_CAS to Corlay': -16},
"per_degree_psd_out_mWperGHz": {
"east edfa in Lannion_CAS to Stbrieuc": 6e-4
}
},
'metadata': {'location': {'latitude': 0, 'longitude': 0, 'city': None, 'region': None}}
}
assert roadm.to_json == to_json_before_propagation
si = roadm(si, degree)
assert roadm.ref_pch_out_dbm == pytest.approx(expected_pch_out_dbm, rel=1e-4)
assert_allclose(expected_si, roadm.get_per_degree_power(degree, spectral_info=si), rtol=1e-3)
@pytest.mark.parametrize('equalization_type', ["target_psd_out_mWperGHz", "target_out_mWperSlotWidth"])
def test_wrong_element_config(equalization_type):
"""Check that 2 equalization correcty raise a config error
"""
roadm_config = {
"uid": "roadm Brest_KLA",
"params": {
"per_degree_pch_out_db": {},
"target_pch_out_db": -20,
equalization_type: 3.125e-4,
"add_drop_osnr": 38,
"pmd": 0,
"pdl": 0,
"restrictions": {
"preamp_variety_list": [],
"booster_variety_list": []
}
},
"metadata": {
"location": {
"city": "Brest_KLA",
"region": "RLD",
"latitude": 4.0,
"longitude": 0.0
}
}
}
with pytest.raises(ConfigurationError):
_ = Roadm(**roadm_config)
def test_merge_equalization():
"""Check that if equalization is not defined default one is correctly take and
else that it is not overwritten
"""
json_data = {
"elements": [{
"uid": "roadm Brest_KLA",
"type": "Roadm"}],
"connections": []
}
equipment = load_equipment(EQPT_FILENAME)
network = network_from_json(json_data, equipment)
roadm = [n for n in network.nodes()][0]
assert roadm.target_pch_out_dbm == -20
delattr(equipment['Roadm']['default'], 'target_pch_out_db')
setattr(equipment['Roadm']['default'], 'target_psd_out_mWperGHz', power_dbm_to_psd_mw_ghz(-20, 32e9))
# json_data is changed (type is popped from json_data with network_from_json_function). Create a new one:
json_data = {
"elements": [{
"uid": "roadm Brest_KLA",
"type": "Roadm"}],
"connections": []
}
network = network_from_json(json_data, equipment)
roadm = [n for n in network.nodes()][0]
assert roadm.target_pch_out_dbm is None
assert roadm.target_psd_out_mWperGHz == 3.125e-4
assert roadm.target_out_mWperSlotWidth is None
json_data = {
"elements": [{
"uid": "roadm Brest_KLA",
"type": "Roadm",
"params": {"target_pch_out_db": -18}}],
"connections": []
}
network = network_from_json(json_data, equipment)
roadm = [n for n in network.nodes()][0]
assert roadm.target_pch_out_dbm == -18
assert roadm.target_psd_out_mWperGHz is None
assert roadm.target_out_mWperSlotWidth is None
json_data = {
"elements": [{
"uid": "roadm Brest_KLA",
"type": "Roadm",
"params": {"target_psd_out_mWperGHz": 5e-4}}],
"connections": []
}
network = network_from_json(json_data, equipment)
roadm = [n for n in network.nodes()][0]
assert roadm.target_pch_out_dbm is None
assert roadm.target_psd_out_mWperGHz == 5e-4
assert roadm.target_out_mWperSlotWidth is None
json_data = {
"elements": [{
"uid": "roadm Brest_KLA",
"type": "Roadm",
"params": {"target_out_mWperSlotWidth": 3e-4}}],
"connections": []
}
network = network_from_json(json_data, equipment)
roadm = [n for n in network.nodes()][0]
assert roadm.target_pch_out_dbm is None
assert roadm.target_psd_out_mWperGHz is None
assert roadm.target_out_mWperSlotWidth == 3e-4
@pytest.mark.parametrize('target_out, delta_pdb_per_channel, correction',
[(-20, [0, 1, 3, 0.5, -2], [0, 0, 5, 5.5, 0]),
(-20, [0, 0, 0, 0, 0], [0, 0, 2, 5, 0]),
(-20, [-2, -2, -2, -2, -2], [0, 0, 0, 3, 0]),
(-20, [0, 2, -2, -5, 4], [0, 0, 0, 0, 0]),
(-25.5, [0, 1, 3, 0.5, -2], [0, 0, 0, 0, 0]), ])
def test_low_input_power(target_out, delta_pdb_per_channel, correction):
"""check that ROADM correctly equalizes on small examples, assumes p_span_0 = 0
case of power equalisation
"""
frequency = 191e12 + array([0, 50e9, 150e9, 225e9, 275e9])
slot_width = array([37.5e9, 50e9, 75e9, 50e9, 37.5e9])
baud_rate = array([32e9, 42e9, 64e9, 42e9, 32e9])
signal = dbm2watt(array([-20.0, -18.0, -22.0, -25.0, -16.0]))
target = target_out + array(delta_pdb_per_channel)
ref_carrier = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
pref = Pref(p_span0=0, p_spani=-20, ref_carrier=ref_carrier)
si = create_arbitrary_spectral_information(frequency=frequency, slot_width=slot_width,
signal=signal, baud_rate=baud_rate, roll_off=0.15,
delta_pdb_per_channel=delta_pdb_per_channel,
tx_osnr=None, ref_power=pref)
roadm_config = {
"uid": "roadm Brest_KLA",
"params": {
"per_degree_pch_out_db": {},
"target_pch_out_db": target_out,
"add_drop_osnr": 38,
"pmd": 0,
"pdl": 0,
"restrictions": {
"preamp_variety_list": [],
"booster_variety_list": []
}
},
"metadata": {
"location": {
"city": "Brest_KLA",
"region": "RLD",
"latitude": 4.0,
"longitude": 0.0
}
}
}
roadm = Roadm(**roadm_config)
si = roadm(si, 'toto')
assert_allclose(watt2dbm(si.signal), target - correction, rtol=1e-5)
# in other words check that if target is below input power, target is applied else power is unchanged
assert_allclose((watt2dbm(signal) >= target) * target + (watt2dbm(signal) < target) * watt2dbm(signal),
watt2dbm(si.signal), rtol=1e-5)
@pytest.mark.parametrize('target_out, delta_pdb_per_channel, correction',
[(3.125e-4,
[0, 0, 0, 0, 0],
[0, 0, 2 + lin2db(64 / 32), 5 + lin2db(42 / 32), 0]),
(3.125e-4,
[1, 3, 0, -5, 0],
[1, 1 + lin2db(42 / 32), 2 + lin2db(64 / 32), 0 + lin2db(42 / 32), 0]), ])
def test_2low_input_power(target_out, delta_pdb_per_channel, correction):
"""check that ROADM correctly equalizes on small examples, assumes p_span_0 = 0
case of PSD equalisation
"""
frequency = 191e12 + array([0, 50e9, 150e9, 225e9, 275e9])
slot_width = array([37.5e9, 50e9, 75e9, 50e9, 37.5e9])
baud_rate = array([32e9, 42e9, 64e9, 42e9, 32e9])
signal = dbm2watt(array([-20.0, -18.0, -22.0, -25.0, -16.0]))
target = psd2powerdbm(target_out, baud_rate) + array(delta_pdb_per_channel)
ref_carrier = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
pref = Pref(p_span0=0, p_spani=-20, ref_carrier=ref_carrier)
si = create_arbitrary_spectral_information(frequency=frequency, slot_width=slot_width,
signal=signal, baud_rate=baud_rate, roll_off=0.15,
delta_pdb_per_channel=delta_pdb_per_channel,
tx_osnr=None, ref_power=pref)
roadm_config = {
"uid": "roadm Brest_KLA",
"params": {
"per_degree_pch_out_db": {},
"target_psd_out_mWperGHz": target_out,
"add_drop_osnr": 38,
"pmd": 0,
"pdl": 0,
"restrictions": {
"preamp_variety_list": [],
"booster_variety_list": []
}
},
"metadata": {
"location": {
"city": "Brest_KLA",
"region": "RLD",
"latitude": 4.0,
"longitude": 0.0
}
}
}
roadm = Roadm(**roadm_config)
si = roadm(si, 'toto')
assert_allclose(watt2dbm(si.signal), target - correction, rtol=1e-5)
def net_setup(equipment):
""" common setup for tests: builds network, equipment and oms only once
"""
network = load_network(NETWORK_FILENAME, equipment)
spectrum = equipment['SI']['default']
p_db = spectrum.power_dbm
p_total_db = p_db + lin2db(automatic_nch(spectrum.f_min, spectrum.f_max, spectrum.spacing))
build_network(network, equipment, p_db, p_total_db)
return network
def create_voyager_req(equipment, source, dest, bidir, nodes_list, loose_list, mode, spacing, power_dbm):
""" create the usual request list according to parameters
"""
params = {'request_id': 'test_request',
'source': source,
'bidir': bidir,
'destination': dest,
'trx_type': 'Voyager',
'trx_mode': mode,
'format': mode,
'spacing': spacing,
'nodes_list': nodes_list,
'loose_list': loose_list,
'path_bandwidth': 100.0e9,
'effective_freq_slot': None}
trx_params = trx_mode_params(equipment, params['trx_type'], params['trx_mode'], True)
params.update(trx_params)
params['power'] = dbm2watt(power_dbm) if power_dbm else dbm2watt(equipment['SI']['default'].power_dbm)
f_min = params['f_min']
f_max_from_si = params['f_max']
params['nb_channel'] = automatic_nch(f_min, f_max_from_si, params['spacing'])
return PathRequest(**params)
@pytest.mark.parametrize('power_dbm', [0, 1, -2, None])
@pytest.mark.parametrize('mode, slot_width', (['mode 1', 50e9], ['mode 2', 75e9]))
def test_initial_spectrum(mode, slot_width, power_dbm):
""" checks that propagation using the user defined spectrum identical to SI, gives same result as SI
"""
# first propagate without any req.initial_spectrum attribute
equipment = load_equipment(EQPT_FILENAME)
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
mode, slot_width, power_dbm)
network = net_setup(equipment)
path = compute_constrained_path(network, req)
infos_expected = propagate(path, req, equipment)
# then creates req.initial_spectrum attribute exactly corresponding to -spectrum option files
temp = [{
"f_min": 191.35e12 + slot_width,
"f_max": 196.15e12 - slot_width,
"baud_rate": req.baud_rate,
"slot_width": slot_width,
"roll_off": 0.15,
"tx_osnr": 40
}]
req.initial_spectrum = _spectrum_from_json(temp)
infos_actual = propagate(path, req, equipment)
print(infos_actual.frequency[0], infos_actual.frequency[-1])
print(infos_expected.frequency[0], infos_expected.frequency[-1])
assert_array_equal(infos_expected.frequency, infos_actual.frequency)
assert_array_equal(infos_expected.baud_rate, infos_actual.baud_rate)
assert_array_equal(infos_expected.slot_width, infos_actual.slot_width)
assert_array_equal(infos_expected.signal, infos_actual.signal)
assert_array_equal(infos_expected.nli, infos_actual.nli)
assert_array_equal(infos_expected.ase, infos_actual.ase)
assert_array_equal(infos_expected.roll_off, infos_actual.roll_off)
assert_array_equal(infos_expected.chromatic_dispersion, infos_actual.chromatic_dispersion)
assert_array_equal(infos_expected.pmd, infos_actual.pmd)
assert_array_equal(infos_expected.channel_number, infos_actual.channel_number)
assert_array_equal(infos_expected.number_of_channels, infos_actual.number_of_channels)
def test_initial_spectrum_not_identical():
""" checks that user defined spectrum overrides spectrum defined in SI
"""
# first propagate without any req.initial_spectrum attribute
equipment = load_equipment(EQPT_FILENAME)
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
'mode 1', 50e9, 0)
network = net_setup(equipment)
path = compute_constrained_path(network, req)
infos_expected = propagate(path, req, equipment)
# then creates req.initial_spectrum attribute exactly corresponding to -spectrum option files
temp = [{
"f_min": 191.4e12, # align f_min , f_max on Voyager f_min, f_mix and not SI !
"f_max": 196.1e12,
"baud_rate": 40e9,
"slot_width": 62.5e9,
"roll_off": 0.15,
"tx_osnr": 40
}]
req.initial_spectrum = _spectrum_from_json(temp)
infos_actual = propagate(path, req, equipment)
assert_raises(AssertionError, assert_array_equal, infos_expected.frequency, infos_actual.frequency)
assert_raises(AssertionError, assert_array_equal, infos_expected.baud_rate, infos_actual.baud_rate)
assert_raises(AssertionError, assert_array_equal, infos_expected.slot_width, infos_actual.slot_width)
assert_raises(AssertionError, assert_array_equal, infos_expected.signal, infos_actual.signal)
assert_raises(AssertionError, assert_array_equal, infos_expected.nli, infos_actual.nli)
assert_raises(AssertionError, assert_array_equal, infos_expected.ase, infos_actual.ase)
assert_raises(AssertionError, assert_array_equal, infos_expected.channel_number, infos_actual.channel_number)
assert_raises(AssertionError, assert_array_equal, infos_expected.number_of_channels, infos_actual.number_of_channels)
@pytest.mark.parametrize('equalization, target_value', [
('target_out_mWperSlotWidth', power_dbm_to_psd_mw_ghz(-20, 50e9)),
('target_psd_out_mWperGHz', power_dbm_to_psd_mw_ghz(-20, 32e9))])
@pytest.mark.parametrize('power_dbm', [0, 2, -0.5])
def test_target_psd_or_psw(power_dbm, equalization, target_value):
""" checks that if target_out_mWperSlotWidth or target_psd_out_mWperGHz is defined, it is used as equalization
and it gives same result if computed target is the same
"""
equipment = load_equipment(EQPT_FILENAME)
network = net_setup(equipment)
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
'mode 1', 50e9, power_dbm)
path = compute_constrained_path(network, req)
infos_expected = propagate(path, req, equipment)
# change default equalization to power spectral density
delattr(equipment['Roadm']['default'], 'target_pch_out_db')
setattr(equipment['Roadm']['default'], equalization, target_value)
# create a second instance with this roadm settings,
network2 = net_setup(equipment)
path2 = compute_constrained_path(network2, req)
infos_actual = propagate(path2, req, equipment)
# since baudrate is the same, resulting propagation should be the same as for power equalization
assert_array_equal(infos_expected.baud_rate, infos_actual.baud_rate)
assert_array_equal(infos_expected.slot_width, infos_actual.slot_width)
assert_array_equal(infos_expected.signal, infos_actual.signal)
assert_array_equal(infos_expected.nli, infos_actual.nli)
assert_array_equal(infos_expected.ase, infos_actual.ase)
assert_array_equal(infos_expected.roll_off, infos_actual.roll_off)
assert_array_equal(infos_expected.chromatic_dispersion, infos_actual.chromatic_dispersion)
assert_array_equal(infos_expected.pmd, infos_actual.pmd)
assert_array_equal(infos_expected.channel_number, infos_actual.channel_number)
assert_array_equal(infos_expected.number_of_channels, infos_actual.number_of_channels)
def ref_network():
""" Create a network instance with a instance of propagated path
"""
equipment = load_equipment(EQPT_FILENAME)
network = net_setup(equipment)
req0 = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
'mode 1', 50e9, 0)
path0 = compute_constrained_path(network, req0)
_ = propagate(path0, req0, equipment)
return network
@pytest.mark.parametrize('deltap', [0, +1.2, -0.5])
def test_target_psd_out_mwperghz_deltap(deltap):
""" checks that if target_psd_out_mWperGHz is defined, delta_p of amps is correctly updated
Power over 1.2dBm saturate amp with this test: TODO add a test on this saturation
"""
equipment = load_equipment(EQPT_FILENAME)
network = net_setup(equipment)
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
'mode 1', 50e9, deltap)
temp = [{
"f_min": 191.35e12, # align f_min , f_max on Voyager f_min, f_mix and not SI !
"f_max": 196.05e12,
"baud_rate": req.baud_rate,
"slot_width": 50e9,
"roll_off": 0.15,
"tx_osnr": 40
}]
req.initial_spectrum = _spectrum_from_json(temp)
path = compute_constrained_path(network, req)
_ = propagate(path, req, equipment)
# check that gain of booster is changed accordingly whereas gain of preamp and ila is not (no saturation case)
boosters = ['east edfa in Brest_KLA to Quimper', 'east edfa in Lorient_KMA to Vannes_KBE']
ila_preamps = ['east edfa in Quimper to Lorient_KMA', 'west edfa in Lorient_KMA to Quimper',
'west edfa in Vannes_KBE to Lorient_KMA']
for amp in boosters + ila_preamps:
expected_amp = next(n for n in ref_network() if n.uid == amp)
actual_amp = next(n for n in network.nodes() if n.uid == amp)
expected_gain = expected_amp.pout_db - expected_amp.pin_db
actual_gain = actual_amp.pout_db - actual_amp.pin_db
print(actual_amp)
if amp in boosters:
assert expected_gain + deltap == pytest.approx(actual_gain, rel=1e-3)
if amp in ila_preamps:
assert expected_gain == pytest.approx(actual_gain, rel=1e-3)
@pytest.mark.parametrize('equalization', ['target_psd_out_mWperGHz', 'target_out_mWperSlotWidth'])
@pytest.mark.parametrize('case', ['SI', 'nodes'])
@pytest.mark.parametrize('deltap', [0, +2, -0.5])
@pytest.mark.parametrize('target', [-20, -21, -18])
@pytest.mark.parametrize('mode, slot_width', (['mode 1', 50e9], ['mode 2', 75e9]))
def test_equalization(case, deltap, target, mode, slot_width, equalization):
"""check that power target on roadm is correct for these cases; check on booster
- SI : target_pch_out_db / target_psd_out_mWperGHz
- node : target_pch_out_db / target_psd_out_mWperGHz
- per degree : target_pch_out_db / target_psd_out_mWperGHz
for these cases with and without power from user
"""
equipment = load_equipment(EQPT_FILENAME)
setattr(equipment['Roadm']['default'], 'target_pch_out_db', target)
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Rennes_STA', False,
['east edfa in Brest_KLA to Quimper', 'roadm Lannion_CAS', 'trx Rennes_STA'],
['STRICT', 'STRICT', 'STRICT'],
mode, slot_width, deltap)
roadms = ['roadm Brest_KLA', 'roadm Lorient_KMA', 'roadm Lannion_CAS', 'roadm Rennes_STA']
# degree = {'roadm Brest_KLA': 'east edfa in Brest_KLA to Quimper',
# 'roadm Lorient_KMA': 'east edfa in Lorient_KMA to Loudeac'}
# boosters = ['east edfa in Brest_KLA to Quimper', 'east edfa in Lorient_KMA to Loudeac',
# 'east edfa in Lannion_CAS to Stbrieuc']
target_psd = power_dbm_to_psd_mw_ghz(target, 32e9)
ref = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
if case == 'SI':
delattr(equipment['Roadm']['default'], 'target_pch_out_db')
setattr(equipment['Roadm']['default'], equalization, target_psd)
network = net_setup(equipment)
elif case == 'nodes':
json_data = load_json(NETWORK_FILENAME)
for el in json_data['elements']:
if el['uid'] in roadms:
el['params'] = {equalization: target_psd}
network = network_from_json(json_data, equipment)
spectrum = equipment['SI']['default']
p_db = spectrum.power_dbm
p_total_db = p_db + lin2db(automatic_nch(spectrum.f_min, spectrum.f_max, spectrum.spacing))
build_network(network, equipment, p_db, p_total_db)
# check that nodes not in roadms have target_pch_out_db not None
pw_roadms = [r for r in network.nodes() if r.uid not in roadms and isinstance(r, Roadm)]
for roadm in pw_roadms:
assert roadm.target_psd_out_mWperGHz is None
assert roadm.target_pch_out_dbm == target
for roadm in [r for r in network.nodes() if r.uid in roadms and isinstance(r, Roadm)]:
assert roadm.target_pch_out_dbm is None
assert getattr(roadm, equalization) == target_psd
path = compute_constrained_path(network, req)
si = create_input_spectral_information(
f_min=req.f_min, f_max=req.f_max, roll_off=req.roll_off, baud_rate=req.baud_rate, power=req.power,
spacing=req.spacing, tx_osnr=req.tx_osnr, ref_carrier=ref)
for i, el in enumerate(path):
if isinstance(el, Roadm):
si = el(si, degree=path[i + 1].uid)
if case in ['SI', 'nodes', 'degrees']:
if equalization == 'target_psd_out_mWperGHz':
assert_allclose(power_dbm_to_psd_mw_ghz(watt2dbm(si.signal + si.ase + si.nli), si.baud_rate),
target_psd, rtol=1e-3)
if equalization == 'target_out_mWperSlotWidth':
assert_allclose(power_dbm_to_psd_mw_ghz(watt2dbm(si.signal + si.ase + si.nli), si.slot_width),
target_psd, rtol=1e-3)
else:
si = el(si)
print(el.uid)
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