VCSELs-based Optoelectronics Transceiver for Free Space Photonics Packet Switching Network

For the realization of a large packet switch with throughput in the range of Tera-to-Petabits/s, an optoelectronics transceiver is one of the crucial modules in the free space photonics link. Here, a novel high speed and capacity free space optoelectronics communication transceiver of 850nm, single-moded and polarization-stable VCSELs, has been designed. The VCSELs transceiver with its driving interface system contain a dual operational amplifier with constant current source module and direct digital synthesizer (DDS) enabling high frequency signal generation module up to 500MHz and beyond, for the realization of the specification for an optoelectronic switching module suitable for a packet router. The designed module could be scaled up for a throughput of 500 Gb/s and act as the basic building block for a larger switch with a throughput of 131 Tb/s.