Patent 7621678 was granted and assigned to Finisar on November, 2009 by the United States Patent and Trademark Office.
In one example embodiment, an electromagnetic radiation (EMR) shield includes a disk, and a substantially centrally located opening defined in the disk. An outside perimeter of the disk is approximately the same as that of a flange of an associated optical subassembly (OSA). The disk defines a plurality of apertures.