| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-core optical fiber which allows positions of respective cores to be easily identified and allows the positions to be easily fixed.SOLUTION: An optical fiber 101 is a multi-core optical fiber including a plurality of cores 10 and a clad 21 surrounding the plurality of cores. In a cross section of the optical fiber, at least one linear part exists in an outer profile of the clad. |
