Optical control element module

Patent metadata

Field	Value
Publication number	US-10348007-B2
Application number	US-201815906511-A
Country	US
Kind code	B2
Filing date	Feb 27, 2018
Priority date	Mar 30, 2017
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

There is provided an optical control element module including: an optical control element having an optical waveguide and a control electrode on a substrate and disposed in a housing; an electrical connection part which is electrically connected to the control electrode, extends along a direction intersecting a plane on which the control electrode of the substrate is disposed, and is disposed in the housing; and a wiring substrate which has an input signal line electrically connected to the electrical connection part, at least a part of which is disposed outside the housing, in which impedance of the electrical connection part is set to be smaller than impedance of the input signal line.

First claim

What is claimed is:

1. An optical control element module comprising:
an optical control element having an optical waveguide and a control electrode on a substrate and disposed in a housing;
an electrical connection part which is electrically connected to the control electrode, extends along a direction intersecting a plane on which the control electrode of the substrate is disposed, and is disposed in the housing; and
a wiring substrate which has an input signal line electrically connected to the electrical connection part, at least a part of which is disposed outside the housing,
wherein an impedance of the electrical connection part is set to be smaller than an impedance of the input signal line of the wiring substrate and greater than a characteristic impedance of the optical control element.

2. The optical control element module according to claim 1 , wherein the electrical connection part is formed of a lead pin.

3. The optical control element module according to claim 2 , wherein a diameter of an outer sheath conductor of the lead pin varies along an extension direction of the lead pin.

4. The optical control element module according to claim 1 , wherein the impedance of the electrical connection part is less than 50Ω.

5. The optical control element module according to claim 1 , further comprising:
a relay substrate having a relay signal line which electrically connects the control electrode and the electrical connection part, wherein a plane on which the relay signal line of the relay substrate is disposed is parallel to a plane on which the control electrode of the substrate is disposed.

6. The optical control element module according to claim 1 , wherein the wiring substrate is a flexible printed circuit substrate.

Assignees

• Sumitomo Osaka Cement Co Ltd

Inventors

• Kataoka Toshio
• Katou Kei

Classifications

• G02B6/4274

  Electrical aspects (G02B6/4263 and G02B6/4265 take precedence) · CPC title

• G02B6/4279

  Radio frequency signal propagation aspects of the electrical connection, high frequency adaptations · CPC title

• G02F1/011 Primary

  in optical waveguides, not otherwise provided for in this subclass · CPC title

• G02B6/4281

  the printed circuit boards being flexible (in general H05K1/147) · CPC title

• G02F2201/12

  electrode · CPC title