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Multi-channel drop filters using photonic crystal ring resonators

Authors
Journal
Optik - International Journal for Light and Electron Optics
0030-4026
Publisher
Elsevier
Publication Date
Volume
123
Issue
2
Identifiers
DOI: 10.1016/j.ijleo.2011.04.001
Keywords
  • Optical Devices
  • Photonic Integrated Circuits
  • Ring Resonators
  • Photonic Crystals
  • Heterostructure
  • Fdtd
Disciplines
  • Physics

Abstract

Abstract In this paper, we propose a photonic crystal multi-channel drop filter based on ring resonators and investigate its properties numerically by using the finite-difference time-domain (FDTD) method. This structure is constructed in a two-dimensional square lattice. Our multi-channel drop filter is composed of three waveguides and three ring resonators. These ring resonators are located in two different regions (heterostructure) which each region has specific dielectric constant. At resonance of each ring resonator, the power with certain wavelength transferred to one of the three drop waveguides is found to be more than 81%.

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