| 摘要 |
PURPOSE:To reduce distributing variance among terminals by making an incidence-side optical fiber thin at a prescribed taper ratio, connecting a columnar optical material to its tip, and connecting tapered thin-diameter end part of a plural-fiber bundle to the other end surface. CONSTITUTION:One incidence-side optical fiber 11 has a taper part 12 and is connected to the columnar optical material 14 at a connection part 13-1. Further, this is connected to the taper part of plural optical fibers 16 at a connection part 13-2. The optical distributor converts the light of the incidence-side optical fiber 11 to a clad mode, the columnar optical material 14 mixes the light, and the connection part 13-2 reduce light which is incident directly on a optical fiber core, thereby distributing the light almost uniformly. Then, the taper ratio R of the incidence-side fiber is specified as shown by an inequality to improve the reduction effect of variance of distributing. |
