Graphene nanoribbon plasmonic waveguides: Fundamental limits and device implications

S. Rakheja, P. Sengupta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The 2D carbon material graphene exhibits strong light-matter interaction over a very wide wavelength range from the far infrared to the ultraviolet [1]. The tunability of the density-of-states and Fermi energy in graphene along with its excellent transport properties provide a path for graphene photonic applications such as quantum optics, photo-voltaics, photo-detectors, and biological sensing [2]. In this paper, we propose exploiting collective electron-light oscillations or plasmons in patterned graphene nano-ribbons (GNRs) for low energy, high-speed on-chip interconnects that can potentially overcome the latency and power constraints of the current copper/low-K on-chip interconnects [3-4]. The contributions of this paper are threefold. First, compact models for evaluating the plasmon-damping rate in GNRs are introduced. The models account for plasmon-damping pathways through phonons (intrinsic and substrate), substrate charged impurities, and edge-states in ribbons. The compact models introduced in this paper are also applicable to other photonic applications of graphene beyond just on-chip interconnects. Secondly, compact models for evaluating the propagation speed and energy consumption of plasmonic waveguides based on their shot-noise limits are introduced. Finally, the fundamental limits and device implications of on-chip plasmonic waveguides are quantified. In particular, propagation speed and energy consumption are compared with copper/low-K on-chip interconnects at advanced technology nodes.

Original languageEnglish (US)
Title of host publication72nd Device Research Conference, DRC 2014 - Conference Digest
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages105-106
Number of pages2
ISBN (Print)9781479954056
DOIs
StatePublished - Jan 1 2014
Externally publishedYes
Event72nd Device Research Conference, DRC 2014 - Santa Barbara, CA, United States
Duration: Jun 22 2014Jun 25 2014

Publication series

NameDevice Research Conference - Conference Digest, DRC
ISSN (Print)1548-3770

Other

Other72nd Device Research Conference, DRC 2014
CountryUnited States
CitySanta Barbara, CA
Period6/22/146/25/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Rakheja, S., & Sengupta, P. (2014). Graphene nanoribbon plasmonic waveguides: Fundamental limits and device implications. In 72nd Device Research Conference, DRC 2014 - Conference Digest (pp. 105-106). [6872319] (Device Research Conference - Conference Digest, DRC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DRC.2014.6872319