On-Chip Programmable Nonlinear Optical Signal Processor and Its Applications

Chaoran Huang, Aashu Jha, Thomas Ferreira De Lima, Alexander N. Tait, Alexander N. Tait, Bhavin J. Shastri, Bhavin J. Shastri, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We introduce an integrated device based on microring resonator (MRR) assisted Mach-Zehnder interferometer (MZI) preceded by a tunable MZ coupler for nonlinear optical signal processing. The novel structure of this device provides both high programmability and switching contrast. These desirable features suggest its potential use as a multi-purpose optical processor providing different high-performance functionalities. We experimentally demonstrate two functionalities using the same device fabricated on a silicon-on-insulator substrate. One functionality is an all-optical thresholder enabling 40× signal contrast improvement, and the other functionality is clock-less pulse carving technique that converts long-pulse signals to short-pulse signals. With these functionalities, we discuss system-level applications of our device in optical interconnects and photonic neural networks.

Original languageEnglish (US)
Article number9104002
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number2
StatePublished - Mar 1 2021

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


  • Neuromorphic photonics
  • nonlinear silicon photonics
  • optical pulse shaping
  • optical signal processing
  • optical switches


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