| 摘要 |
PURPOSE:To easily form the part of a housing where optical fibers are taken out as a hermetic part by providing a capillary on the side face of the housing and inserting the front end of the optical fiber in the housing and the front end of the optical fiber in the outside part into the capillary, then pressing these front ends to each other. CONSTITUTION:The capillary 25 having the inside diameter slightly larger than the outside diameter of the fibers 22a, 24a of the internal and external optical fibers 22, 24 is provided in a waveguide substrate 21 and the side face of the housing to house the optical fiber 22 to be coupled to the waveguide of this substrate. The front ends of the fibers 22a, 24a are inserted into this capillary and are pressed to each other, by which the optical fibers are optically connected. A cross hole 27 communicating the outer peripheral surface of the part of the capillary 25 projecting into the housing 23 and the hole 26 in the capillary 25 is bored in the peripheral wall of this part. The fibers 22a and 24a are pressed in the part of this cross hole 27. A resin 28 is packed near th4e cross hole 27. The fiber 24a is metallized and the capillary 26 is housed into a metallic pipe 29. Solder 30 is packed into the spacing between this metallic pipe 29 and the metallized part of the optical fiber 24, by which the inside part of the housing is surely formed hermetic. |
