Optical module

Patent metadata

Field	Value
Publication number	US-12248181-B2
Application number	US-202018005141-A
Country	US
Kind code	B2
Filing date	Aug 5, 2020
Priority date	Aug 5, 2020
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

An optical module is provided with a columnar protrusion over the entire pickup area (EP) for automatic suction by a mounting device at the center of the upper surface of a fiber holding carrier. The protrusion secures a dedicated pickup area (EP 1 ) on a top surface. When an extra length of an optical fiber extending from an optical device is routed and held between a pair of wall portions, the extra length including a tip portion is held in a storage area of the fiber holding carrier by a restoring force caused by being pressed against the wall portions.

First claim

The invention claimed is:

1. An optical module comprising:
an optical device including an optical waveguide chip;
an optical fiber being optically coupled to the optical waveguide chip; and
a fiber holding carrier being attached to the optical device, having a pickup area, and holding the optical fiber,
wherein the fiber holding carrier is provided with one or more protrusions to prevent the optical fiber from entering the pickup area; and
wherein the one or more protrusions further comprise a wall structure having a cylindrical shape with a hollow portion extending in a protruding direction, and comprise the pickup area at a bottom portion of the cylindrical shape.

2. The optical module according to claim 1 , wherein the one or more protrusions has the pickup area at a top in a protruding direction.

3. The optical module according to claim 1 , wherein the wall structure is provided with one or more cuts.

4. The optical module according to claim 1 , wherein the pickup area has a circular shape.

5. The optical module according to claim 1 , wherein
the fiber holding carrier is provided with a plurality of wall portions on a surface opposite to a surface to which the optical device is attached, and
the optical fiber is held in a storage area of the fiber holding carrier between the plurality of wall portions and the one or more protrusions by a restoring force caused by an extra length of the optical fiber being pressed against the plurality of wall portions, and a tip portion of the extra length is disposed along an outer periphery of the one or more protrusions.

6. The optical module according to claim 5 , wherein
the one or more protrusions further comprise, in a direction perpendicular to the pickup area, a height greater than a height of the area in which the extra length of the optical fiber is held.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Kawamura Yuriko
• Yamada Takashi
• Nasu Yusuke
• Ikuma Yuichiro

Classifications

• G02B6/444

  Systems or boxes with surplus lengths · CPC title

• G02B6/362

  Vacuum holders for optical elements · CPC title

• G02B6/30 Primary

  for use between fibre and thin-film device · CPC title