Optical connection structure and method for manufacturing an optical connection structure
By using laser welding to connect multi-core optical fibers to lenses and fiber bundles, the problems of reliability and optical coupling loss in high temperature and high humidity environments were solved, and stable optical signal transmission was achieved.
CN122249755APending Publication Date: 2026-06-19SUMITOMO ELECTRIC INDUSTRIES LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUMITOMO ELECTRIC INDUSTRIES LTD
- Filing Date
- 2024-12-10
- Publication Date
- 2026-06-19
Smart Images
Figure CN122249755A_ABST
Abstract
In the optical connection structure (1), a first metal retainer (18) holds a multi-core optical fiber (12) and a first lens (15). A second metal retainer (24) is welded to the first metal retainer (18). The second metal retainer holds a second lens (22). A third metal retainer (48) holds an optical fiber bundle (41). A metal sleeve (30) is welded to the second metal retainer and the third metal retainer, respectively. The metal sleeve connects the second metal retainer and the third metal retainer. The arrangement shape of the multiple second optical fiber cores (71) at the second end face (42a) is similar to the arrangement shape of the multiple first optical fiber cores (61) at the first end face (12a). The focal lengths (f1, f2) of the first and second lenses, the pitches (P1, P2) of the first and second optical fiber cores, and the mode field diameters (MFD1, MFD2) satisfy the specified relationships.
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