PACKAGE FOR HOUSING OPTICAL SEMICONDUCTOR ELEMENT

摘要

PROBLEM TO BE SOLVED: To make the operation of an optical semiconductor element normal and stable for a long period of time by effectively preventing degradation of the transmission characteristics of high frequency signals, not increasing the height of an optical semiconductor package and effectively preventing the decline of the coupling of light by an environmental test further. SOLUTION: This package is provided with a plural electrode pads 6 arrayed and formed along two sides facing each other almost parallel to an optical fiber on the lower surface of a base body 1 for electrically connecting the optical semiconductor element 3 and the outside and a lid 2 attached to the upper surface of the base 1 so as to seal the optical semiconductor element 3. In an area immediately blow the substrate 4 for mounting the lower surface and the area extended in the optical axis direction of the optical fiber 5, the plural connection pads 8 of the width of 0.3 mm or more smaller than the electrodes pads 6 are provided with the array pitch of 0.5 mm or more.