公开(公告)号：US20240361622A1

公开(公告)日：2024-10-31

申请号：US18765418

申请日：2024-07-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoki HAMAMURA ,  Yasuhiro AIDA

IPC: G02F1/03 ,  G02F1/035 ,  G02F1/21

CPC classification number: G02F1/0316 ,  G02F1/035 ,  G02F1/212 ,  G02F2202/20

Abstract: An optical modulator includes an optical waveguide, a first electrode, a second electrode, and a low dielectric constant layer. The optical waveguide is made of a material having an electro-optic effect. The first and second electrodes generate a potential difference with each other. In a cross-sectional view in a direction perpendicular or substantially perpendicular to an extending direction of the optical waveguide, the first electrode is on first side of the optical waveguide in a width direction and on first side of the optical waveguide in a thickness direction, the second electrode is on the second side of the optical waveguide in the width direction and on the second side of the optical waveguide in the thickness direction, the low dielectric constant layer is interposed between the first electrode and the optical waveguide, and a portion of the first electrode adjacent to the optical waveguide is in the low dielectric constant layer.

公开(公告)号：US20240411200A1

公开(公告)日：2024-12-12

申请号：US18804528

申请日：2024-08-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoki HAMAMURA ,  Yasuhiro AIDA

IPC: G02F1/225 ,  G02F1/21

Abstract: An optical modulator includes an optical waveguide, first and second electrodes, and a first wiring electrode. The first electrode is on one side of the optical waveguide in a height direction of the optical modulator and extends along a portion of the optical waveguide. The second electrode is on another side of the optical waveguide in the height direction of the optical modulator. The first wiring electrode is on a side of the first electrode opposite to the optical waveguide in the height direction and is electrically connected to the first electrode. The first wiring electrode includes a wiring portion extending from an end portion in an extension direction of the first electrode when viewed along the height direction.

公开(公告)号：US20240361624A1

公开(公告)日：2024-10-31

申请号：US18768275

申请日：2024-07-10

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoki HAMAMURA ,  Yasuhiro AIDA

IPC: G02F1/035

CPC classification number: G02F1/035 ,  G02F2201/063 ,  G02F2202/06 ,  G02F2202/42

Abstract: An optical modulator includes an optical waveguide, a first electrode, a second electrode, and a first low dielectric constant layer. The optical waveguide includes a material having an electro-optic effect. The first electrode includes a semiconductor material and is spaced by a gap from the optical waveguide. The second electrode is positioned to provide a potential difference with the first electrode and apply an electric field to the optical waveguide. The first low dielectric constant layer has a refractive index smaller than that of the optical waveguide, and is provided in the gap between the first electrode and the optical waveguide.

公开(公告)号：US20240361623A1

公开(公告)日：2024-10-31

申请号：US18768269

申请日：2024-07-10

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoki HAMAMURA ,  Yasuhiro AIDA

IPC: G02F1/035

CPC classification number: G02F1/035 ,  G02F2201/12 ,  G02F2202/16

Abstract: An optical modulator includes an optical waveguide including a material having an electro-optic effect, a first electrode, and a second electrode. The first electrode includes a semiconductor material. The second electrode includes a metal material and is positioned to provide a potential difference with respect to the first electrode to apply an electric field to the optical waveguide.

公开(公告)号：US20240402522A1

公开(公告)日：2024-12-05

申请号：US18804533

申请日：2024-08-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoki HAMAMURA ,  Yasuhiro AIDA

IPC: G02F1/035

Abstract: An optical modulator includes an optical waveguide and first and second electrodes. The first electrode is located on one side in a height direction of the optical modulator with respect to the optical waveguide. The first electrode includes one end portion and another end portion overlapping with the optical waveguide in a view along the height direction. The second electrode is located on the other side in the height direction with respect to the optical waveguide and applies an electric field to the optical waveguide together with the first electrode. In the view along the height direction, a length of the first electrode is different from a length of the optical waveguide from a position of the one end portion to a position of the another end portion of the first electrode.

公开(公告)号：US20240361662A1

公开(公告)日：2024-10-31

申请号：US18765419

申请日：2024-07-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Satoki HAMAMURA ,  Yasuhiro AIDA

IPC: G02F1/225 ,  G02F1/21

CPC classification number: G02F1/225 ,  G02F1/212 ,  G02F2202/20

Abstract: An optical modulator includes an optical waveguide, a first electrode, two second electrodes, and a third electrode that generates a potential difference from the first electrode and the second electrodes. Each second electrode receives a voltage with an identical phase to a voltage applied to the first electrode. In a cross-sectional view perpendicular to a direction in which the optical waveguide extends, the first electrode is on a first side of the optical waveguide in a thickness direction, one second electrode is spaced apart from the first electrode on a first side of the first electrode in a width direction of the optical waveguide, the other second electrode is spaced apart from the first electrode on a second side of the first electrode in the width direction of the optical waveguide, and the third electrode is on a second side of the optical waveguide in the thickness direction.