{
  "elements": [
    {
      "uid": "Site_A",
      "type": "Transceiver",
      "metadata": {
        "location": {
          "latitude": 0.0,
          "longitude": 0.0,
          "city": "Site A",
          "region": ""
        }
      }
    },
    {
      "uid": "Span1",
      "type": "Fiber",
      "type_variety": "SSMF",
      "params": {
        "length": 80.0,
        "length_units": "km",
        "att_in": 0,
        "con_in": 0,
        "con_out": 0,
        "loss_coef": 0.25
      },
      "metadata": {
        "location": {
          "latitude": 1.0,
          "longitude": 0.0,
          "city": null,
          "region": ""
        }
      }
    },
    {
      "uid": "Edfa1",
      "type": "Edfa",
      "type_variety": "std_low_gain",
      "operational": {
        "gain_target": 20.5,
        "delta_p": 0.5,
        "tilt_target": 0,
        "out_voa": 0,
        "in_voa": 0
      },
      "metadata": {
        "location": {
          "latitude": 2.0,
          "longitude": 0.0,
          "city": null,
          "region": ""
        }
      }
    },
    {
      "uid": "Span2",
      "type": "Fiber",
      "type_variety": "SSMF",
      "params": {
        "length": 80.0,
        "length_units": "km",
        "att_in": 0,
        "con_in": 0,
        "con_out": 0,
        "loss_coef_per_frequency": [
          {
            "frequency": 186300000000000.0,
            "loss_coef_value": 0.29
          },
          {
            "frequency": 194000000000000.0,
            "loss_coef_value": 0.28
          },
          {
            "frequency": 197000000000000.0,
            "loss_coef_value": 0.29
          }
        ]
      },
      "metadata": {
        "location": {
          "latitude": 1.0,
          "longitude": 0.0,
          "city": null,
          "region": ""
        }
      }
    },
    {
      "uid": "Edfa2",
      "type": "Edfa",
      "type_variety": "std_low_gain",
      "operational": {
        "gain_target": 20.960832,
        "delta_p": -1.0,
        "tilt_target": 0,
        "out_voa": 0,
        "in_voa": 0
      },
      "metadata": {
        "location": {
          "latitude": 2.0,
          "longitude": 0.0,
          "city": null,
          "region": ""
        }
      }
    },
    {
      "uid": "Att_B",
      "type": "Fused",
      "params": {
        "loss": 16.0
      },
      "metadata": {
        "location": {
          "latitude": 2.0,
          "longitude": 1.0,
          "city": "Corlay",
          "region": "RLD"
        }
      }
    },
    {
      "uid": "Site_B",
      "type": "Transceiver",
      "metadata": {
        "location": {
          "latitude": 3.0,
          "longitude": 0.0,
          "city": "Site B",
          "region": ""
        }
      }
    }
  ],
  "connections": [
    {
      "from_node": "Site_A",
      "to_node": "Span1"
    },
    {
      "from_node": "Span1",
      "to_node": "Edfa1"
    },
    {
      "from_node": "Edfa1",
      "to_node": "Span2"
    },
    {
      "from_node": "Span2",
      "to_node": "Edfa2"
    },
    {
      "from_node": "Edfa2",
      "to_node": "Att_B"
    },
    {
      "from_node": "Att_B",
      "to_node": "Site_B"
    }
  ],
  "network_name": "EDFA Example Network - P2P"
}