Title:
FAN-IN/FAN-OUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/145308
Kind Code:
A1
Abstract:
Provided is a FIFO device (10) comprising: an MCF (20); a first lens (30) which has a first optical axis that is parallel to the central axis of the MCF; a second lens group (40) which has second lenses (41 to 44) that have a second optical axis parallel to the first optical axis and that are the same in number as the cores of the MCF; and a single-core optical fiber group (50) which has single-core optical fibers (51 to 54) that are the same in number as the second lenses. The respective end faces (51a to 54a) of the single-core optical fibers are each obliquely polished so as to be inclined in a prescribed inclination direction by a prescribed polishing angle with respect to a surface orthogonal to the central axis thereof. The oblique polishing direction of peripheral single-core optical fibers (51 to 54) is set such that a corresponding second lens is positioned further in a direction approaching the first optical axis or further in a direction approaching the first lens as compared to a position if the peripheral single-core optical fibers were not obliquely polished.
Inventors:
KIRIYAMA TOMOAKI (JP)
IWASAKI KATSUHIRO (JP)
KITO KATSUYA (JP)
IWASAKI KATSUHIRO (JP)
KITO KATSUYA (JP)
Application Number:
PCT/JP2021/047563
Publication Date:
July 07, 2022
Filing Date:
December 22, 2021
Export Citation:
Assignee:
KOHOKU KOGYO KK (JP)
International Classes:
G02B6/32; G02B6/02
Foreign References:
| JP2016206294A | 2016-12-08 | |||
| JP2015219424A | 2015-12-07 | |||
| JP2019191260A | 2019-10-31 | |||
| JP2020091466A | 2020-06-11 | |||
| JPS57105607U | 1982-06-29 | |||
| JP2015114606A | 2015-06-22 | |||
| US20120300312A1 | 2012-11-29 |
Attorney, Agent or Firm:
PROSPEC PATENT FIRM (JP)
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