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    IQ OPTICAL MODULATOR
    1.
    发明公开
    IQ OPTICAL MODULATOR 审中-公开

    公开(公告)号：EP4030224A1

    公开(公告)日：2022-07-20

    申请号：EP19945236.8

    申请日：2019-09-13

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： OGISO, Yoshihiro ,  OZAKI, Josuke ,  HASHIZUME, Yasuaki ,  ISHIKAWA, Mitsuteru ,  NUNOYA, Nobuhiro

    IPC分类号： G02F1/01

    摘要： Provided is an IQ optical modulator including a nest-type MZ optical waveguide having optical modulation regions of I channel and Q channel. End portions of an input optical waveguide and an output optical waveguide of the IQ optical modulator are located on a same edge face of a chip of the IQ optical modulator, an optical cross waveguide is included in which an optical waveguide between a first optical combiner and a second optical combiner of the nest-type MZ optical waveguide and the input optical waveguide cross each other, a first optical divider is provided between the I-channel optical modulation region and the Q-channel optical modulation region, and a light propagation direction in the first optical divider and a light propagation direction in the optical modulation regions are opposite to each other.