| 摘要 |
A fiber optics device of this invention includes first and second optical members. The first optical member is obtained by integrating a plurality of optical fibers of the first type by bundling, and has first and second end faces formed obliquely to the optical axis of the optical fibers of the first type and parallel to each other. The second optical member is obtained by integrating a plurality of optical fibers of the second type by bundling, and has first and second end faces formed obliquely to the optical axis of the optical fibers of the second type and parallel to each other. The optical fibers of the second type have a larger numerical aperture than that of the optical fibers of the first type. The first end face of the second optical member is bonded to the second end face of the first optical member.
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