Tuning out disorder-induced localization in nanophotonic cavity arrays

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Sokolov S., Lian J., YÜCE E., Combrie S., DE ROSSİ A., Mosk A. P.

OPTICS EXPRESS, vol.25, no.5, pp.4598-4606, 2017 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 5
  • Publication Date: 2017
  • Doi Number: 10.1364/oe.25.004598
  • Journal Name: OPTICS EXPRESS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4598-4606
  • Middle East Technical University Affiliated: Yes


Weakly coupled high-Q nanophotonic cavities are building blocks of slow-light waveguides and other nanophotonic devices. Their functionality critically depends on tuning as resonance frequencies should stay within the bandwidth of the device. Unavoidable disorder leads to random frequency shifts which cause localization of the light in single cavities. We present a new method to finely tune individual resonances of light in a system of coupled nanocavities. We use holographic laser-induced heating and address thermal crosstalk between nanocavities using a response matrix approach. As a main result we observe a simultaneous anticrossing of 3 nanophotonic resonances, which were initially split by disorder. (C) 2017 Optical Society of America