研究目的
Investigating the reduction of core deformation in multi-core fiber fabrication using the over-cladding bundled rods method by applying hexagonal rods.
研究成果
The non-circularities of the inner cladding layers are approximately 1%, on average, for both fiber types when using different hexagonal rods. Thus, the core deformation was at the same level as those found using the SAD and the drilling process. With the proposed method, the trench deformation was also reduced using hexagonal rods.
研究不足
The study focuses on the reduction of core deformation using hexagonal rods in the OBR method, but does not address other potential fabrication challenges or the scalability of the method for mass production.
1：Experimental Design and Method Selection:
The study investigates the MCF fabrication technique using the OBR method by applying hexagonal rods for small core deformation.
2：Sample Selection and Data Sources:
Two types of hexagonal rods (types A and B) were fabricated and used in the experiment.
3：List of Experimental Equipment and Materials:
Core rods, spacers, hexagonal rods, triangular rods, and silica glass rods were used.
4：Experimental Procedures and Operational Workflow:
Core rods and spacers were bundled into a multi-core structure, a cladding layer was deposited using the OVD method, and the deposited soot was sintered to a transparent preform.
5：Data Analysis Methods:
The non-circularities of the inner cladding layers were measured as an indication of the core deformation.
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