Optical waveguide module

Patent metadata

Field	Value
Publication number	US-9874705-B2
Application number	US-201715427557-A
Country	US
Kind code	B2
Filing date	Feb 8, 2017
Priority date	Feb 6, 2015
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

An optical waveguide module includes an optical waveguide sheet including multiple optical waveguides, and a light-emitting device and a light-receiving device each positioned over a surface of the optical waveguide sheet. At least one of the optical waveguides includes a first mirror, a second mirror, and a slit. The first mirror is configured to reflect light entering the corresponding optical waveguide from its first end to the light-receiving device or to reflect light emitted from the light-emitting device toward the first end of the corresponding optical waveguide. The second mirror is configured to reflect light entering the corresponding optical waveguide from its second end toward the surface of the optical waveguide sheet. The slit is provided between the second mirror and the second end of the corresponding optical waveguide. The corresponding optical waveguide is discontinuous across the slit.

First claim

What is claimed is:

1. An optical waveguide module, comprising:
an optical waveguide sheet including a plurality of optical waveguides;
a light-emitting device positioned over a surface of the optical waveguide sheet;
a light-receiving device positioned over the surface of the optical waveguide sheet; and
a mirror formed in at least one of the plurality of optical waveguides, the mirror being configured to reflect light propagating through the optical waveguide toward the surface of the optical waveguide sheet,
wherein the mirror includes a recognition mark and is configured to scatter the light propagating through the optical waveguide at the recognition mark.

2. The optical waveguide module as claimed in claim 1 , wherein
the plurality of optical waveguides includes a plurality of cores,
at least one core among the plurality of cores includes an inclined surface forming the mirror, and
the recognition mark is at a center of the inclined surface.

Assignees

• Fujitsu Component Ltd

Inventors

• Gappa Rie
• Daikuhara Osamu
• Akieda Shinichiro
• Moriyama Satoshi
• Zhang Hongfei
• Kanda Mitsuki

Classifications

• G02B6/422 Primary

  Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements (G02B6/4233, G02B6/4234 take precedence) · CPC title

• G02B6/4227

  Active alignment methods, e.g. procedures and algorithms · CPC title

• G02B2006/12104

  Mirror; Reflectors or the like · CPC title

• G02B6/4222

  by observing back-reflected light · CPC title

• G02B6/4214 Primary

  the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device (G02B6/4246 takes precedence) · CPC title