公开(公告)号：EP1020754A1

公开(公告)日：2000-07-19

申请号：EP99937008.3

申请日：1999-08-10

申请人： SUMITOMO OSAKA CEMENT CO., LTD.

发明人： SUGAMATA, Tohru, New Techn. Res. Lab. ,  MIYAMA, Yasuyuki, New Techn. Res. Lab. ,  HASHIMOTO, Yoshihiro, New Techn. Res. Lab.

IPC分类号： G02F1/035

CPC分类号： G02F1/0356 ,  G02F2201/066 ,  G02F2201/07

摘要： An optical waveguide modulator 40 according to the present invention has a substrate 1 made of a material with an electrooptic effect, an optical waveguide 2 to guide a lightwave 2, a travelling wave-type signal electrode 3 and the ground electrodes 4 to control the lightwave. Moreover, it has a buffer layer 6, at least a part thereof being embedded in the superficial layer of the substrate 1, having a larger width "W" than a width "ω" of the travelling wave-type signal electrode 3 only under the signal electrode 3 and its nearby part.

摘要翻译： 根据本发明的光波导调制器40具有由具有电光效应的材料制成的基板1，用于引导光波2的光波导2，行波型信号电极3和接地电极4以控制光波 。 此外，它具有缓冲层6，其至少一部分嵌入在衬底1的表面层中，具有比行波信号电极3的宽度“ω”更大的宽度“W”，仅在 信号电极3及其附近部分。

公开(公告)号：EP1020754B1

公开(公告)日：2006-10-18

申请号：EP99937008.3

申请日：1999-08-10

申请人： SUMITOMO OSAKA CEMENT CO., LTD.

发明人： SUGAMATA, Tohru, New Techn. Res. Lab. ,  MIYAMA, Yasuyuki, New Techn. Res. Lab. ,  HASHIMOTO, Yoshihiro, New Techn. Res. Lab.

IPC分类号： G02F1/035

CPC分类号： G02F1/0356 ,  G02F2201/066 ,  G02F2201/07

摘要： A light modulator of waveguide type (40) comprises electrooptic substrate (1), an optical waveguide (2) for guiding light wave, a traveling wave type signal electrode (3) for controlling the guided light, and a grounding electrode (4). A buffer layer (6), having a width W greater than the width omega of the traveling wave type signal electrode (3), is formed only under traveling wave type signal electrode (3), and the buffer layer is buried at least in part into the surface portion of the substrate (1).