Resonant-Wavelength Control of Nanocavities by Nanometer-Scaled Adjustment of Two-Dimensional Photonic Crystal Slab Structures

In this letter, we experimentally demonstrate resonant-wavelength control of a series of 16 nanocavities in a two-dimensional photonic crystal slab structure by nanometer-order variation of the lattice constants and air-holes sizes. The cavities show a linear dependence on these parameters, a 1-nm i...

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Bibliographic Details
Published in:IEEE photonics technology letters 2008-04, Vol.20 (7), p.532-534
Main Authors: Bong-Shik Song, Nagashima, T., Asano, T., Noda, S.
Format: Article
Language:English
Subjects:
Filters
Finite difference methods
Lattice parameters
Lattices
Mathematical analysis
Nanocavity
Nanomaterials
Nanostructure
Nanostructures
Optical control
optical filters
photonic crystal (PC)
Photonic crystals
Resonance
sensor
Size control
Slabs
Time domain analysis
Two dimensional
Wavelengths
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Summary:In this letter, we experimentally demonstrate resonant-wavelength control of a series of 16 nanocavities in a two-dimensional photonic crystal slab structure by nanometer-order variation of the lattice constants and air-holes sizes. The cavities show a linear dependence on these parameters, a 1-nm increase of lattice constant or air-hole size leading to 4.2-nm increase or 1.56-nm decrease of the resonant wavelength, respectively. These experimental results are in good agreement with the finite-difference time-domain calculations and have a small standard deviation of wavelength (~1 nm) between samples on a single chip. These results will stimulate development in areas such as ultrasmall and multichannel filters, sensors, and switches.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.918890