Module Interconnection by Optical Fibers
Original Publication Date: 1985-Jun-01
Included in the Prior Art Database: 2005-Feb-18
A signal distribution element (SDE) is used with an exchange network of optical fibers to interconnect four modules with integrated circuits (ICs) and to connect them to a common input/output port. The box-shaped SDE has four optical ports 2a to 2d connected to the optical interface of four IC modules 3a to 3d that incorporate electrooptical converters in the form of a transmitter TX and a receiver RX chip. Optical fiber bundles 4a, 4b link the RX and TX chips to ports 2. Lenses 5a, 5b are provided in each port to expand the output beams of the fibers, thus facilitating the alignment between the IC modules and the SDE when the latter is inserted into its socket. The signal paths within the SDE consist of optical fiber bundles 6a to 6c, by means of which each port 2 and all the other ports are interconnected.