input.txt

{
    "flag": "output_sample",
    "freq": [ 0.0, 10.0, 1000 ],
    "materials": {
        "air": 1.0,
        "CNT": "./dielectrics/cnt/",
        "sapphire": "./dielectrics/sapphire/",
        "aluminium" : "./dielectrics/aluminium/"
    },
    "efields": {
        "x_pol": 1.0,
        "left_pol": [ 1.0, "left" ],
        "pulse": "./fields/pulse1/"
    },
    "geometries": {
        "setup1": {
            "layers": [ "air", "sapphire", "aluminium", "air" ],
            "angles": [ 0.0, 0.0, 0.0, 0.0 ],
            "thicks": [ 100.0, 10.0 ]
        },
        "setup2": {
            "layers": [ "air", "CNT", "air" ],
            "angles": [ 0.0, [ 0.0, 0.785398163, 20 ], 0.0 ],
            "thicks": [ [ 5.0, 5.0, 20 ] ]
        },
        "setup3": {
            "layers": [ "air", "sapphire", "CNT", "air" ],
            "angles": [ 0.0, 0.0, [ 0.785398163, 0.785398163, 20 ], 0.0 ],
            "thicks": [ 100.0, [ 5.0, 5.0, 20 ] ]
        }
    }
}