Nature Communications (Jan 2017)

Pushing the limits of CMOS optical parametric amplifiers with USRN:Si7N3 above the two-photon absorption edge

  • K. J. A. Ooi,
  • D. K. T. Ng,
  • T. Wang,
  • A. K. L. Chee,
  • S. K. Ng,
  • Q. Wang,
  • L. K. Ang,
  • A. M. Agarwal,
  • L. C. Kimerling,
  • D. T. H. Tan

DOI
https://doi.org/10.1038/ncomms13878
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 10

Abstract

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Typical CMOS materials in the telecommunications band suffer from two-photon absorption or possess weak Kerr nonlinearities. Here, Ooiet al. demonstrate 42.5 dB optical parametric amplification in ultra-silicon-rich nitride waveguides, designed to have strong nonlinearities with negligible losses.