Broadband optoelectronic switch for digital and analog signals

An optoelectronic matrix capable of routing broadband digital and analog signals is presented. Metal-semiconductor-metal (MSM) photodetectors are used as bias-switched analog crosspoints to provide a signal format independent routing path through the switch. Results are presented for digital signals up to a bit rate of 2.5 Gbps with CATV signals switched simultaneously through the same switch fabric. This optoelectronic switch architecture provides a unique signal format insensitive method of implementing broadband switch fabrics required for gigabit communication networks.