Production manner null of electric optical mixed loading

摘要

PURPOSE: To obtain an optical coupling structure with which the easy optical axis alignment in a height direction is assured and to improve the radiation characteristic of a mounted end face type optical element by specifying the structure of a mixed electrical and optical module. ;CONSTITUTION: High-density electric wiring is realized by using a mixed electrical and optical hybrid wiring board 10 formed by laminating and integrating polymer optical waveguides 14 on multilayered copper polyimide wiring layers 11'. The distance between the front surface of a solder layer 13" formed on an optical element installation region 13 and the optical axis of the optical waveguides 14 is set equal to the distance from the base of the end face type optical element 12 to the center 12' in the active part. As a result, the optical axis of the optical waveguides 14 in the height direction and the optical axis of the end face type optical element 12 are aligned simply by bringing the base of the end face type optical element 12 into contact with the front surface of the solder layer 13". Further, the rear surface of the metallic conductor layer 13' on the optical element installation region 13 and the multilayered ceramic substrate 11 are connected by columnar conductors 18 to lower the thermal resistance of the layers between the rear surface of the metallic conductor layer 13' and the multilayered ceramic substrate 11, by which the radiation characteristic of the end face type optical element 12 mounted in the optical element installation region 13 is improved.;COPYRIGHT: (C)1996,JPO