VLSI

7 Design Space Exploration of Wavelength-Routed Optical Networks-on-Chip Topologies for 3D Stacked Multi- and Many-Core Processors

Luca Ramini and Davide Bertozzi

Contents

7.1 Introduction

7.2 Silicon Photonics as a Technology Enabler

7.2.1 Optical Links

7.2.2 Modulators

7.2.3 Photonic Switching Elements and Optical Routers for Optical Networks-on-Chip

7.2.4 Photodetectors

7.2.5 Laser Sources

7.3 Need for Pathfinding

7.4 Predictability–Critical Optical Networks-on-Chip Topologies

7.5 Design Space Exploration of Wavelength-Routed Topologies

7.5.1 Global Connectivity

7.5.2 Relative Topology Comparison

7.5.3 Comparison with an Optical Ring Topology

7.5.4 Network Partitioning

7.5.5 Logic Topologies

7.5.6 Physical Topologies

7.5.7 Power Efficiency ...