Optical sub assembly

摘要

This invention relates to an optical sub assembly for receiving an optical fibre transmission line for coupling to an optical device, to a receptacle for use in such a sub assembly and to a method of manufacture of such a sub assembly. In particular, this invention relates to an optical sub assembly which provides electrical isolation between a receptacle (1) having a nose (8) for receiving the optical fibre and a package (2) housing an optical device (3). The nose (8) houses a ferrule (10) containing a fibre stub (13) which may be optically aligned with an optical device (3) housed in a package (2) before securing the receptacle (1) to the package (2). In this invention electrical insulation is provided between the nose (8) and the package (2) by means of a sleeve (12) extending along a middle portion of the ferrule (10) and an insulating portion (15) positioned between the sleeve (12) and the nose (8).