Source code for piel.models.frequency.photonic.mmi2x2

"""
Translated from https://github.com/flaport/sax or https://github.com/flaport/photontorch/tree/master
"""




def mmi2x2_50_50():
    import sax

    S = {
        ("o1", "o3"): (1 - 0.5) ** 0.5,
        ("o1", "o4"): 1j * 0.5**0.5,
        ("o2", "o3"): 1j * 0.5**0.5,
        ("o2", "o4"): (1 - 0.5) ** 0.5,
    }
    return sax.reciprocal(S)





def mmi2x2(splitting_ratio=0.5):
    import sax

    S = {
        ("o1", "o3"): (1 - splitting_ratio) ** 0.5,
        ("o1", "o4"): 1j * splitting_ratio**0.5,
        ("o2", "o3"): 1j * splitting_ratio**0.5,
        ("o2", "o4"): (1 - splitting_ratio) ** 0.5,
    }
    return sax.reciprocal(S)