{
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        {
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      "synchronization": [
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          }
        },
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        {
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        {
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        {
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        {
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        {
          "uid": "fiber (Dan → Alice)-",
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        },
        {
          "uid": "fiber (Bob → Alice)-",
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        {
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        {
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        {
          "uid": "fiber (Dan → Carol)-",
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        },
        {
          "uid": "east edfa in Alice to Bob",
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          },
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        },
        {
          "uid": "east edfa in Bob to Carol",
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          "uid": "east edfa in Bob1 to Carol1",
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        {
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        {
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        {
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        {
          "uid": "east edfa in Carol1 to Bob1",
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        },
        {
          "uid": "west edfa in Alice to Bob",
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        },
        {
          "uid": "west edfa in Bob to Carol",
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        {
          "uid": "west edfa in Bob1 to Carol1",
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              "city": "Bob",
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        },
        {
          "uid": "west edfa in Carol to Dan",
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          },
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              "city": "Carol",
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        },
        {
          "uid": "west edfa in Dan to Alice",
          "type": "Edfa",
          "type_variety": "std_medium_gain",
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            "gain_target": 13.0,
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          },
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              "city": "Dan",
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        },
        {
          "uid": "west edfa in Bob to Alice",
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        {
          "uid": "west edfa in Alice to Dan",
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        },
        {
          "uid": "west edfa in Carol to Bob",
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        },
        {
          "uid": "west edfa in Carol1 to Bob1",
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      ],
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          "to_node": "roadm Alice"
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        {
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        {
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        {
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        {
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        {
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        },
        {
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        },
        {
          "from_node": "roadm Alice",
          "to_node": "trx Alice"
        },
        {
          "from_node": "roadm Bob",
          "to_node": "east edfa in Bob to Alice"
        },
        {
          "from_node": "roadm Bob1",
          "to_node": "east edfa in Bob1 to Carol1"
        },
        {
          "from_node": "roadm Bob",
          "to_node": "east edfa in Bob to Carol"
        },
        {
          "from_node": "roadm Bob",
          "to_node": "trx Bob"
        },
        {
          "from_node": "roadm Bob1",
          "to_node": "trx Bob1"
        },
        {
          "from_node": "roadm Carol",
          "to_node": "east edfa in Carol to Bob"
        },
        {
          "from_node": "roadm Carol1",
          "to_node": "east edfa in Carol1 to Bob1"
        },
        {
          "from_node": "roadm Carol",
          "to_node": "east edfa in Carol to Dan"
        },
        {
          "from_node": "roadm Carol",
          "to_node": "trx Carol"
        },
        {
          "from_node": "roadm Carol1",
          "to_node": "trx Carol1"
        },
        {
          "from_node": "fiber (Alice → Bob)-",
          "to_node": "west edfa in Bob to Alice"
        },
        {
          "from_node": "fiber (Bob → Carol)-",
          "to_node": "west edfa in Carol to Bob"
        },
        {
          "from_node": "fiber (Bob1 → Carol1)-",
          "to_node": "west edfa in Carol1 to Bob1"
        },
        {
          "from_node": "fiber (Carol → Dan)-",
          "to_node": "east edfa in Dan to Alice"
        },
        {
          "from_node": "fiber (Dan → Alice)-",
          "to_node": "west edfa in Alice to Dan"
        },
        {
          "from_node": "fiber (Bob → Alice)-",
          "to_node": "west edfa in Alice to Bob"
        },
        {
          "from_node": "fiber (Carol → Bob)-",
          "to_node": "west edfa in Bob to Carol"
        },
        {
          "from_node": "fiber (Carol1 → Bob1)-",
          "to_node": "west edfa in Bob1 to Carol1"
        },
        {
          "from_node": "fiber (Dan → Carol)-",
          "to_node": "west edfa in Carol to Dan"
        },
        {
          "from_node": "fiber (Alice → Dan)-",
          "to_node": "west edfa in Dan to Alice"
        },
        {
          "from_node": "east edfa in Alice to Bob",
          "to_node": "fiber (Alice → Bob)-"
        },
        {
          "from_node": "east edfa in Bob to Carol",
          "to_node": "fiber (Bob → Carol)-"
        },
        {
          "from_node": "east edfa in Bob1 to Carol1",
          "to_node": "fiber (Bob1 → Carol1)-"
        },
        {
          "from_node": "east edfa in Carol to Dan",
          "to_node": "fiber (Carol → Dan)-"
        },
        {
          "from_node": "east edfa in Dan to Alice",
          "to_node": "fiber (Dan → Alice)-"
        },
        {
          "from_node": "east edfa in Bob to Alice",
          "to_node": "fiber (Bob → Alice)-"
        },
        {
          "from_node": "east edfa in Alice to Dan",
          "to_node": "fiber (Alice → Dan)-"
        },
        {
          "from_node": "east edfa in Carol to Bob",
          "to_node": "fiber (Carol → Bob)-"
        },
        {
          "from_node": "east edfa in Carol1 to Bob1",
          "to_node": "fiber (Carol1 → Bob1)-"
        },
        {
          "from_node": "west edfa in Alice to Bob",
          "to_node": "roadm Alice"
        },
        {
          "from_node": "west edfa in Bob to Carol",
          "to_node": "roadm Bob"
        },
        {
          "from_node": "west edfa in Bob1 to Carol1",
          "to_node": "roadm Bob1"
        },
        {
          "from_node": "west edfa in Bob1 to Carol1",
          "to_node": "roadm Bob1"
        },
        {
          "from_node": "west edfa in Carol to Dan",
          "to_node": "roadm Carol"
        },
        {
          "from_node": "west edfa in Dan to Alice",
          "to_node": "fiber (Dan → Carol)-"
        },
        {
          "from_node": "west edfa in Bob to Alice",
          "to_node": "roadm Bob"
        },
        {
          "from_node": "west edfa in Alice to Dan",
          "to_node": "roadm Alice"
        },
        {
          "from_node": "west edfa in Carol to Bob",
          "to_node": "roadm Carol"
        },
        {
          "from_node": "west edfa in Carol1 to Bob1",
          "to_node": "roadm Carol1"
        }
      ]
    },
    "equipment": {
      "Edfa": [
        {
          "type_variety": "high_detail_model_example",
          "type_def": "advanced_model",
          "gain_flatmax": 25,
          "gain_min": 15,
          "p_max": 21,
          "advanced_config_from_json": "std_medium_gain_advanced_config.json",
          "out_voa_auto": false,
          "allowed_for_design": false
        },
        {
          "type_variety": "Juniper_BoosterHG",
          "type_def": "advanced_model",
          "gain_flatmax": 25,
          "gain_min": 10,
          "p_max": 21,
          "advanced_config_from_json": "Juniper-BoosterHG.json",
          "out_voa_auto": false,
          "allowed_for_design": false
        },
        {
          "type_variety": "operator_model_example",
          "type_def": "variable_gain",
          "gain_flatmax": 26,
          "gain_min": 15,
          "p_max": 23,
          "nf_min": 6,
          "nf_max": 10,
          "out_voa_auto": false,
          "allowed_for_design": false
        },
        {
          "type_variety": "low_noise",
          "type_def": "openroadm",
          "gain_flatmax": 27,
          "gain_min": 12,
          "p_max": 22,
          "nf_coef": [
            -8.104e-4,
            -6.221e-2,
            -5.889e-1,
            37.62
          ],
          "allowed_for_design": false
        },
        {
          "type_variety": "standard",
          "type_def": "openroadm",
          "gain_flatmax": 27,
          "gain_min": 12,
          "p_max": 22,
          "nf_coef": [
            -5.952e-4,
            -6.250e-2,
            -1.071,
            28.99
          ],
          "allowed_for_design": false
        },
        {
          "type_variety": "std_high_gain",
          "type_def": "variable_gain",
          "gain_flatmax": 35,
          "gain_min": 25,
          "p_max": 21,
          "nf_min": 5.5,
          "nf_max": 7,
          "out_voa_auto": false,
          "allowed_for_design": true
        },
        {
          "type_variety": "std_medium_gain",
          "type_def": "variable_gain",
          "gain_flatmax": 26,
          "gain_min": 15,
          "p_max": 23,
          "nf_min": 6,
          "nf_max": 10,
          "out_voa_auto": false,
          "allowed_for_design": true
        },
        {
          "type_variety": "std_low_gain",
          "type_def": "variable_gain",
          "gain_flatmax": 16,
          "gain_min": 8,
          "p_max": 23,
          "nf_min": 6.5,
          "nf_max": 11,
          "out_voa_auto": false,
          "allowed_for_design": true
        },
        {
          "type_variety": "high_power",
          "type_def": "variable_gain",
          "gain_flatmax": 16,
          "gain_min": 8,
          "p_max": 25,
          "nf_min": 9,
          "nf_max": 15,
          "out_voa_auto": false,
          "allowed_for_design": false
        },
        {
          "type_variety": "std_fixed_gain",
          "type_def": "fixed_gain",
          "gain_flatmax": 21,
          "gain_min": 20,
          "p_max": 21,
          "nf0": 5.5,
          "allowed_for_design": false
        },
        {
          "type_variety": "4pumps_raman",
          "type_def": "fixed_gain",
          "gain_flatmax": 12,
          "gain_min": 12,
          "p_max": 21,
          "nf0": -1,
          "allowed_for_design": false
        },
        {
          "type_variety": "hybrid_4pumps_lowgain",
          "type_def": "dual_stage",
          "raman": true,
          "gain_min": 25,
          "preamp_variety": "4pumps_raman",
          "booster_variety": "std_low_gain",
          "allowed_for_design": true
        },
        {
          "type_variety": "hybrid_4pumps_mediumgain",
          "type_def": "dual_stage",
          "raman": true,
          "gain_min": 25,
          "preamp_variety": "4pumps_raman",
          "booster_variety": "std_medium_gain",
          "allowed_for_design": true
        },
        {
          "type_variety": "medium+low_gain",
          "type_def": "dual_stage",
          "gain_min": 25,
          "preamp_variety": "std_medium_gain",
          "booster_variety": "std_low_gain",
          "allowed_for_design": true
        },
        {
          "type_variety": "medium+high_power",
          "type_def": "dual_stage",
          "gain_min": 25,
          "preamp_variety": "std_medium_gain",
          "booster_variety": "high_power",
          "allowed_for_design": false
        }
      ],
      "Fiber": [
        {
          "type_variety": "SSMF",
          "dispersion": 1.67e-05,
          "gamma": 0.00127,
          "pmd_coef": 1.265e-15
        },
        {
          "type_variety": "NZDF",
          "dispersion": 0.5e-05,
          "gamma": 0.00146,
          "pmd_coef": 1.265e-15
        },
        {
          "type_variety": "LOF",
          "dispersion": 2.2e-05,
          "gamma": 0.000843,
          "pmd_coef": 1.265e-15
        }
      ],
      "RamanFiber": [
        {
          "type_variety": "SSMF",
          "dispersion": 1.67e-05,
          "gamma": 0.00127,
          "pmd_coef": 1.265e-15,
          "raman_efficiency": {
            "cr": [
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              4.88E-05,
              6.82E-05,
              8.31E-05,
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              0.000344,
              0.0002933,
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              7.14E-05,
              6.86E-05,
              8.5E-05,
              8.93E-05,
              9.01E-05,
              8.15E-05,
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              4.37E-05,
              3.28E-05,
              2.96E-05,
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              2.57E-05,
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              5.85E-05,
              6.63E-05,
              6.36E-05,
              5.5E-05,
              4.06E-05,
              2.77E-05,
              2.42E-05,
              1.87E-05,
              1.6E-05,
              1.4E-05,
              1.13E-05,
              1.05E-05,
              9.8E-06,
              9.8E-06,
              1.13E-05,
              1.64E-05,
              1.95E-05,
              2.38E-05,
              2.26E-05,
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              6.6E-06,
              4.7E-06,
              2.7E-06,
              1.9E-06,
              1.2E-06,
              4E-07,
              2E-07,
              1E-07
            ],
            "frequency_offset": [
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              1e12,
              1.5e12,
              2e12,
              2.5e12,
              3e12,
              3.5e12,
              4e12,
              4.5e12,
              5e12,
              5.5e12,
              6e12,
              6.5e12,
              7e12,
              7.5e12,
              8e12,
              8.5e12,
              9e12,
              9.5e12,
              10e12,
              10.5e12,
              11e12,
              11.5e12,
              12e12,
              12.5e12,
              12.75e12,
              13e12,
              13.25e12,
              13.5e12,
              14e12,
              14.5e12,
              14.75e12,
              15e12,
              15.5e12,
              16e12,
              16.5e12,
              17e12,
              17.5e12,
              18e12,
              18.25e12,
              18.5e12,
              18.75e12,
              19e12,
              19.5e12,
              20e12,
              20.5e12,
              21e12,
              21.5e12,
              22e12,
              22.5e12,
              23e12,
              23.5e12,
              24e12,
              24.5e12,
              25e12,
              25.5e12,
              26e12,
              26.5e12,
              27e12,
              27.5e12,
              28e12,
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              30e12,
              30.5e12,
              31e12,
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              32e12,
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            ]
          }
        }
      ],
      "Span": [
        {
          "power_mode": true,
          "delta_power_range_db": [
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            3,
            0.5
          ],
          "max_fiber_lineic_loss_for_raman": 0.25,
          "target_extended_gain": 2.5,
          "max_length": 150,
          "length_units": "km",
          "max_loss": 28,
          "padding": 10,
          "EOL": 0,
          "con_in": 0,
          "con_out": 0
        }
      ],
      "Roadm": [
        {
          "target_pch_out_db": -20,
          "add_drop_osnr": 38,
          "pmd": 0,
          "restrictions": {
            "preamp_variety_list": [],
            "booster_variety_list": []
          }
        }
      ],
      "SI": [
        {
          "f_min": 191.3e12,
          "baud_rate": 32e9,
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          "spacing": 50e9,
          "power_dbm": 0,
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          ],
          "roll_off": 0.15,
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          "sys_margins": 2
        }
      ],
      "Transceiver": [
        {
          "type_variety": "vendorA_trx-type1",
          "frequency": {
            "min": 191.35e12,
            "max": 196.1e12
          },
          "mode": [
            {
              "format": "mode 1",
              "baud_rate": 32e9,
              "OSNR": 11,
              "bit_rate": 100e9,
              "roll_off": 0.15,
              "tx_osnr": 40,
              "min_spacing": 37.5e9,
              "cost": 1
            },
            {
              "format": "mode 2",
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              "OSNR": 15,
              "bit_rate": 200e9,
              "roll_off": 0.15,
              "tx_osnr": 40,
              "min_spacing": 75e9,
              "cost": 1
            }
          ]
        },
        {
          "type_variety": "Voyager",
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            "max": 196.1e12
          },
          "mode": [
            {
              "format": "mode 1",
              "baud_rate": 32e9,
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              "bit_rate": 100e9,
              "roll_off": 0.15,
              "tx_osnr": 40,
              "min_spacing": 37.5e9,
              "cost": 1
            },
            {
              "format": "mode 3",
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              "OSNR": 18,
              "bit_rate": 300e9,
              "roll_off": 0.15,
              "tx_osnr": 40,
              "min_spacing": 62.5e9,
              "cost": 1
            },
            {
              "format": "mode 2",
              "baud_rate": 66e9,
              "OSNR": 21,
              "bit_rate": 400e9,
              "roll_off": 0.15,
              "tx_osnr": 40,
              "min_spacing": 75e9,
              "cost": 1
            },
            {
              "format": "mode 4",
              "baud_rate": 66e9,
              "OSNR": 16,
              "bit_rate": 200e9,
              "roll_off": 0.15,
              "tx_osnr": 40,
              "min_spacing": 75e9,
              "cost": 1
            }
          ]
        }
      ]
    }
  }
}