| 摘要 |
PURPOSE:To easily obtain an optical branching circuit which scacely generates a connecting loss, by embedding and butting a fiber into a guide groove having a branching circuit pattern, and after that, pouring transparent resin having a prescribed refractive index, into the groove of the branch coupling part, and hardening it. CONSTITUTION:Along a desired branching circuit pattern 1, a guide groove 2 is formed on a transparent resin substrate 3, and into its groove 2, a plastic fiber 4 is embedded and butted, and after that, the branch coupling part is made to adhere and hardened by pouring transparent resin 7 having a high refractive index. In this way, it is possible to obtain an optical branching circuit which scarcely generates a connecting loss. |
