Abstract:
The long-term scaling disparity between CMOS processing capabilities (driven by Moore's Law and affording ~40%/year growth in processing capabilities) and high-speed comm...Show MoreMetadata
Abstract:
The long-term scaling disparity between CMOS processing capabilities (driven by Moore's Law and affording ~40%/year growth in processing capabilities) and high-speed communications technologies (electrical and optical transmission, affording only ~20%/year growth in per-lane interface rates) has led to rather worrisome technology scalability problems, from chip-to-chip interconnects to transoceanic fiber-optic cables. Massive parallelism in the form of space-division multiplexing (SDM) is the only long-term sustainable and techno-economically attractive solution, across all communications scenarios affected by scalability concerns. In its broadest sense, SDM can be defined as ‘the use of spatial multiplicity beyond the deployment of M individual systems for an M-fold capacity increase’ and includes aspects such as array integration, waveguide integration, power management in parallel systems, and logical channel partitioning/routing. In this tutorial, we review the scaling of optical communication systems from chip-to-chip interconnects to submarine cables, taking into account all available classical (and quantum) degrees of freedom. We combine basic Shannon (and Gordon) capacity scaling with technological and engineering limitations to arrive at practically relevant directions for SDM research and commercial product developments.
Date of Conference: 07-11 July 2019
Date Added to IEEE Xplore: 29 August 2019
ISBN Information: