Patent ID: 6948863
Filing Date: 2005-09-27
Classification: G02B,H01L,H05K

Abstract:
1. An optical module comprising: a semiconductor optical device; a stem having a mounting surface on which said semiconductor optical device is mounted, and a back surface opposite to the mounting surface; a plurality of lead pins inserted into said stem, each lead pin having a first end portion which is exposed on said mounting surface, and a second end portion protruding from said back surface; a wiring board having an end portion located near said back surface and a plurality of wirings extending to said end portion of said wiring board, said second end portions of said plurality of lead pins being connected to said wirings; and a package for enclosing said wiring board, said package having a base and a lid, wherein one of said plurality of lead pins is a signal pin for transmitting an output signal from said semiconductor optical device or an input signal to said semiconductor optical device, wherein said wirings includes a signal wiring connected to said signal pin, and ground wirings provided on both sides of said signal wiring, and wherein said wiring board further includes an auxiliary wiring member for electrically connecting said ground wirings to said stem.