| 摘要 |
PURPOSE:To obtain the interchangeability of a receptacle with a device having no built-in peripheral circuit component by a method wherein one of lead wires is extended to a part above the center of a board on which the peripheral circuit components are mounted and an optical semiconductor element is mounted on the upper surface of the lead wire. CONSTITUTION:One 15a of lead wires fixed to a bottom case 11 is extended to a part above the center of an insulating board 12 on which peripheral circuit components 13a and 13b are mounted and an optical semiconductor element 16 is mounted on the upper surface of the lead wire 15a. With this constitution, as the optical semiconductor element 16 can be provided most closely to a window glass 18, it is not necessary to expand a mutual distance L2 between the optical semiconductor element 16 and the window glass 18 in order to avoid the interference between the window glass 18 and the peripheral circuit components 13a and 13b, so that the mutual distance L2 can be determined freely. Therefore, the optical semiconductor device can be coupled with an optical fiber without degrading a light coupling efficiency by using a receptacle for an optical semiconductor device having no built-in peripheral circuit component. |
