Optical transceiver module

An optical transceiver module for electrical connection to an electrical circuit, for optical connection to an optical data network, and for mounting on a main printed circuit board, the transceiver comprising:

• an electro-optical transmission assembly having a connector portion for connection to an optical waveguide;
• an electro-optical receiving assembly having a connector portion for connection to an optical waveguide;
• a multiplexing device for converting received parallel electrical signals of a first Bit-rate to serial electrical signals of a second Bit-rate for said electro-optical transmission assembly, said first Bit-rate being lower than said second Bit-rate;
• a demultiplexing device for converting serial electrical signals of said second Bit-rate from said electro-optical receiving assembly to parallel electrical signals of said first Bit-rate for transmission;
• a printed circuit board having an electrical connector portion for receiving the parallel electrical signals for said multiplexing device and for transmitting the parallel electrical signals from said demultiplexing device, said printed circuit board carrying said electro-optical transmission assembly, said electro-optical receiving assembly, said multiplexing device, and said demultiplexing device;
• a transceiver housing for mounting on a main printed circuit board having a ground connection for a ground potential, said housing formed of an electromagnetically shielding material, said housing substantially enclosing said printed circuit board, said housing formed with a first optical connection opening, a second optical connection opening, and an electrical connection opening located adjacent said electrical connector portion of said printed circuit board, said connector portion of said electro-optical transmission assembly extending through said first optical connection opening, said connector portion of said electro-optical receiving assembly extending through said second optical connection opening, said housing having a top-shell, a bottom shell, and a material joining said top shell and said bottom shell, said material selected from the group consisting of a paste providing electromagnetically shielding features and a foil providing electromagnetically shielding features;
• a first gasket for reducing electromagnetic radiation emerging out of said housing through said first optical connection opening, said first gasket providing a low resistance connection between said housing and a first component extending through said first optical connection opening, said component including said connector portion of said electro-optical transmission assembly;
• a second gasket for reducing electromagnetic radiation emerging out of said housing through said second optical connection opening, said second gasket providing a low resistance connection between said housing and a second component extending through said second optical connection opening, said second component including said connector portion of said electro-optical receiving assembly;
• and
• a third gasket for reducing electromagnetic radiation emerging out of said housing through said electrical connection opening, said third gasket for providing a low resistance connection between said housing and the ground connection of the main printed circuit board.