| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an optical fiber capable of wiring in a smaller bending diameter than that of a conventional one having the same outer diameter thereas.SOLUTION: An optical fiber 10 includes a core 11, an inner cladding 12 formed on an outer circumference of the core 11, and an outer cladding 13 formed on an outer circumference of the inner cladding 12. The outer cladding 13 is provided with a hole aggregate region 15 formed of a plurality of holes 14 which are concentrically distributed around the core 11.</p> |
