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Updated: May 8, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Channel dropping via bound states in the continuum in a system of two nonlinear cavities between two linear
Evgeny Bulgakov1, Konstantin Pichugin, Almas Sadreev
1L V Kirensky Institute of Physics, 660036, Krasnoyarsk, Russia.
Abstract:
We show that two nonlinear resonant cavities aligned between two parallel waveguides can support self-induced bound states in the continuum (BSCs). These BSCs are symmetrical relative to an inversion of the waveguides and to inversion of the transport axis. Due to this BSCs can drop an incident wave from one waveguide to another with very high efficiency. We show also that the frequency of the efficient channel dropping can be tuned by injecting power. All these results are in good agreement with numerical solutions of the Maxwell equations in a two-dimensional photonic crystal of GaAs rods holding two parallel waveguides and two defects made of a Kerr medium.
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