Title:
OPTICAL FIBER CONNECTION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2022/004220
Kind Code:
A1
Abstract:
An optical fiber connection structure according to one embodiment is provided with: a multi-core fiber; a plurality of single-core fibers arranged in parallel in a direction orthogonal to a longitudinal direction; a first lens having a focal length of f1 (mm); and a second lens having a focal length of f2 (mm). The placement of the respective center positions of cores in a cross section orthogonal to the longitudinal direction of the multi-core fiber and the placement of the respective center positions of cores in cross sections orthogonal to the longitudinal direction of the plurality of single-core fibers are similar in shape. The pitch between the cores of the multi-core fiber is denoted by P1 (μm), the mode field diameter at a first end face of each of the cores is denoted by MFD1 (μm), the pitch between the cores of the plurality of single-core fibers is denoted by P2 (μm), the mode field diameter of light at a second end face of each of the cores is denoted by MFD2 (μm), and (P1/P2)×0.9 ≤ f1/f2 ≤ (P1/P2)×1.1 and (P1/P2)×0.9 ≤ MFD1/MFD2 ≤ (P1/P2)×1.1 are satisfied.
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Inventors:
SHIMAKAWA OSAMU (JP)
TAZAWA HIDEHISA (JP)
TANAKA MASATO (JP)
TAZAWA HIDEHISA (JP)
TANAKA MASATO (JP)
Application Number:
PCT/JP2021/020508
Publication Date:
January 06, 2022
Filing Date:
May 28, 2021
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G02B6/02; G02B6/32
Domestic Patent References:
| WO2009075168A1 | 2009-06-18 |
Foreign References:
| JP2016061941A | 2016-04-25 | |||
| JP2018136551A | 2018-08-30 | |||
| US8873909B1 | 2014-10-28 | |||
| JP2016224183A | 2016-12-28 | |||
| JP2007193006A | 2007-08-02 | |||
| JP2003167159A | 2003-06-13 | |||
| CN111290075A | 2020-06-16 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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