公开(公告)号：US20170276975A1

公开(公告)日：2017-09-28

申请号：US15468118

申请日：2017-03-24

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： KEI KATOU ,  NORIKAZU MIYAZAKI ,  RYO SHIMIZU

IPC: G02F1/03 ,  G02F1/225

CPC classification number: G02F1/0327 ,  G02F1/0322 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/58

Abstract: In an optical modulator, a light-receiving element (3a) that receives a light wave modulated in an optical modulation section (Ma) and a light-receiving element (3b) that receives a light wave modulated in an optical modulation section (Mb) are provided in a substrate. In addition, at least a part of an electrical line (4a) that guides a light-receiving signal output from the light-receiving element (3a) to an outer side of the substrate, and at least apart of an electrical line (4b) that guides a light-receiving signal form the light-receiving element (3b) to an outer side of the substrate are formed in the substrate. In addition, crosstalk suppression means (5), which suppress crosstalk between the electrical line (4a) and the electrical line (4b), is provided between the part of the electrical line (4a) and the part of the electrical line (4b) which are formed in the substrate.

公开(公告)号：US20170276972A1

公开(公告)日：2017-09-28

申请号：US15468115

申请日：2017-03-24

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： KEI KATOU ,  NORIKAZU MIYAZAKI ,  RYO SHIMIZU

IPC: G02F1/03 ,  G02F1/035

CPC classification number: G02F1/0327 ,  G02F1/035 ,  G02F2201/07 ,  G02F2201/58

Abstract: An optical modulator includes a substrate having an electro-optic effect, an optical waveguide that is formed in the substrate, and a modulation electrode (not illustrated) for modulating a light wave that propagates through the optical waveguide. In the optical modulator, a light-receiving element is disposed on the substrate, and the light-receiving element includes a light-receiving section that receives a light wave that propagates through the optical waveguide, and the light-receiving section is located on the downstream side of a center of the light-receiving element in a light wave propagating direction.

公开(公告)号：US20170276974A1

公开(公告)日：2017-09-28

申请号：US15468117

申请日：2017-03-24

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： KEI KATOU ,  NORIKAZU MIYAZAKI ,  RYO SHIMIZU

IPC: G02F1/03 ,  G02F1/225

CPC classification number: G02F1/0327 ,  G02F1/0316 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/58

Abstract: An optical modulator includes a first optical modulation section and a second optical modulation section which use modulation signals different from each other when applying a modulation signal to the modulation electrode and performing optical modulation. In addition, a light-receiving element is disposed on a substrate, and the light-receiving element has a first light-receiving section that detects optical signal propagating from a first waveguide which guides the optical signal output from the first optical modulation section. In addition, the light-receiving element also has a second light-receiving section that detects an optical signal propagating through a second waveguide which guides the optical signal output from the second optical modulation section.

公开(公告)号：US20170276973A1

公开(公告)日：2017-09-28

申请号：US15468116

申请日：2017-03-24

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： KEI KATOU ,  NORIKAZU MIYAZAKI ,  RYO SHIMIZU

IPC: G02F1/03 ,  G02F1/225 ,  G02F1/035

CPC classification number: G02F1/0327 ,  G02F1/0322 ,  G02F1/035 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/58

Abstract: In an optical modulator, a light-receiving element, and an output port are disposed in a substrate. In addition, at least a part of an electrical line, which electrically connects the light-receiving element and the output port to each other, is formed in the substrate. In addition, a plurality of the optical modulation sections are provided. In addition, among a plurality of the light-receiving elements which are provided to the optical modulation sections, at least one light-receiving element is disposed at a position different from positions of the other light-receiving elements in a light wave propagating direction. A plurality of the output ports are disposed in an arrangement in the light wave propagating direction in correspondence with an arrangement of the plurality of the light-receiving elements in the light wave propagating direction.