公开(公告)号：US20160033848A1

公开(公告)日：2016-02-04

申请号：US14780040

申请日：2014-03-13

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Toshio Kataoka ,  Katsutoshi Kondou ,  Junichiro Ichikawa

IPC: G02F1/225

CPC classification number: G02F1/225 ,  G02F1/0316 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/121

Abstract: An aspect of the present invention is an optical modulator including a substrate, a plurality of optical waveguides, and a plurality of modulation electrodes provided on the substrate in order to modulate light propagating through the optical waveguides. The modulation electrodes include signal electrodes, to which modulation signals are supplied, and ground electrodes. The signal electrodes include first and second signal electrodes. The ground electrodes include a first ground electrode provided between the first and second signal electrodes, a second ground electrode provided on the opposite side of the first signal electrode from the first ground electrode adjacent to the first signal electrode, and a third ground electrode provided on the opposite side of the second signal electrode from the first ground electrode adjacent to the second signal electrode. A concave groove is formed in each of the first to third ground electrodes.

Abstract translation: 本发明的一个方面是一种光调制器，其包括基板，多个光波导和设置在基板上的多个调制电极，以便调制通过光波导传播的光。 调制电极包括供给调制信号的信号电极和接地电极。 信号电极包括第一和第二信号电极。 接地电极包括设置在第一和第二信号电极之间的第一接地电极，设置在与第一信号电极相邻的第一接地电极的第一信号电极的相反侧的第二接地电极，以及设置在第一接地电极 第二信号电极的相对于与第二信号电极相邻的第一接地电极的相对侧。 在第一至第三接地电极中的每一个中形成凹槽。