Silicon photonics for compact, energy-efficient interconnects [Invited]
Abstract
The goal of the research program that we describe is to break the emerging performance wall in microprocessor development arising from limited bandwidth and density of on-chip interconnects and chip-to-chip (processor-to-memory) electrical interfaces. Complementary metal-oxide semiconductor compatible photonic devices provide an infrastructure for deployment of a range of integrated photonic networks, which will replace state-of-the-art electrical interconnects, providing significant gains at the system level. Scaling of wavelength-division-multiplexing (WDM) architectures using high-index-contrast (HIC) waveguides offers one path to realizing the energy efficiency and density requirements of high data rate links. HIC microring-resonator filters are well suited to support add-drop nodes in dense WDM photonic networks with high aggregate data rates because they support high Q's and, due to their traveling-wave character, naturally support physically separated input and drop ports. A novel reconfigurable, 'hitless' switch is presented that does not perturb the express channels either before, during, or after reconfiguration. In addition, multigigahertz operation of low-power, Mach-Zehnder silicon modulators as well as germanium-on-silicon photodiodes are presented.
- Publication:
-
Journal of Optical Networking
- Pub Date:
- January 2007
- DOI:
- 10.1364/JON.6.000063
- Bibcode:
- 2007JON.....6...63B
- Keywords:
-
- Photodiodes;
- Resonators;
- Integrated optoelectronic circuits;
- Waveguide modulators