Optical Multilevel Signaling for High Bandwidth and Power-Efficient On-Chip Interconnects

Tzyy Juin Kao, Ahmed Louri

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The scalability of high-performance computing systems is increasingly dependent on high-bandwidth and power-efficient communication between a growing number of processing cores on-and off-chip. Recent developments in silicon photonics technology can potentially alleviate many of the challenges associated with these stringent interconnection demands. In this letter, we propose the use of an optical multilevel signaling technique for on-chip interconnects in conjunction with wavelength division multiplexing to double the aggregate communication bandwidth without increasing the number of waveguides and wavelengths used, thereby reducing scaling costs.

Original languageEnglish (US)
Article number7134732
Pages (from-to)2051-2054
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number19
StatePublished - Oct 1 2015


  • Optical interconnections
  • amplitude shift keying
  • photonic integrated circuits

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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