| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of manufacturing an optical coupling device, having low connection loss through fusion splicing a large diameter bridge fiber with a porous capillary, in which a plurality of optical fibers are inserted and integrated. <P>SOLUTION: A fused-quartz made porous capillary is prepared where a large number of holes for arraying optical fibers are drilled nearly in parallel, with an optical fiber inserted in each hole from one end of the porous capillary; the porous capillary is then heated to make it fuse/integrate with each of optical fibers; thereafter, the other end of the porous capillary is abutted against one end of the large diameter bridge fiber, with the contact part fusion spliced to obtain the optical coupling device. This manufacturing method of the optical coupling device is such that the porous capillary used therein is one with a dopant added for lowering the melting point, and that annealing is performed, when a heat source power is stopped, after the fusion/integration of the porous capillary and the large-diameter bridge fiber. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
