Over the last decade significant progress in optoelectronic devices and their integration techniques have made Free-Space Optical Interconnects (FSOI) one of the few physical approaches that can potentially address the increasingly complex communication requirements at the board-to-board and chip-to-chip levels. In this paper, we review the recent advances made and discuss future research directions needed to bring FSOI to the realm of practice.
Sadik C. Esener, Philippe J. Marchand