Programmable Silicon Photonic Optical Thresholder

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

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We experimentally demonstrate an all-optical programmable thresholder on a silicon photonic circuit. By exploiting the nonlinearities in a resonator-Assisted Mach-Zehnder interferometer (MZI), the proposed optical thresholder can discriminate two optical signals with a power contract ratio as low as 1.13. We experimentally achieve a signal contrast enhancement of 40, which leads to a bit error rate (BER) improvement by 5 orders of magnitude and a receiver sensitivity improvement of 11 dB. We present the thresholding function of our device and validate the function with experimental data. Furthermore, we investigate potential device speed improvement by reducing the carrier lifetime.

Original languageEnglish (US)
Article number8879624
Pages (from-to)1834-1837
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number22
StatePublished - Nov 15 2019

All Science Journal Classification (ASJC) codes

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


  • Optical thresholder
  • nonlinear silicon photonics


Dive into the research topics of 'Programmable Silicon Photonic Optical Thresholder'. Together they form a unique fingerprint.

Cite this