Non-degenerate two-photon absorption in silicon waveguides: analytical and experimental study

Yanbing Zhang*, Chad Husko, Simon Lefrancois, Isabella H. Rey, Thomas F. Krauss, Jochen Schroeder, Benjamin J. Eggleton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

We theoretically and experimentally investigate the nonlinear evolution of two optical pulses in a silicon waveguide. We provide an analytic solution for the weak probe wave undergoing non-degenerate two-photon absorption (TPA) from the strong pump. At larger pump intensities, we employ a numerical solution to study the interplay between TPA and photo-generated free carriers. We develop a simple and powerful approach to extract and separate out the distinct loss contributions of TPA and free-carrier absorption from readily available experimental data. Our analysis accounts accurately for experimental results in silicon photonic crystal waveguides. (C) 2015 Optical Society of America

Original languageEnglish
Pages (from-to)17101-17110
Number of pages10
JournalOptics Express
Volume23
Issue number13
DOIs
Publication statusPublished - 29 Jun 2015

Keywords

  • ALL-OPTICAL MODULATION
  • PHASE-SENSITIVE AMPLIFICATION
  • REGENERATION
  • DISPERSION
  • CHIP

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