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  • Strain Sensitive Effect in a Triangular Lattice Photonic Crystal Hole-Modified Nanocavity

    Author(s)
    Bui, Thanh Tung
    Hoang, Minh Nguyen
    Dzung, Viet Dao
    Rogge, Sven
    Salemink, Huub WM
    Sugiyama, Susumu
    Griffith University Author(s)
    Dao, Dzung V.
    Year published
    2011
    Metadata
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    Abstract
    This paper reports the theoretical and experimental investigations of the strain-induced resonant wavelength shift effect of a modified single-defect 2-dimensional (2D) photonic crystal (PhC) nanocavity resonator. The nanocavity was created by modifying the geometry, i.e., the diameters and shapes, of some specific holes in the triangular-lattice 2D PhC. Structural and optical simulations were performed based on the finite element method (FEM) and finite difference time domain (FDTD), respectively, to theoretically determine the optical characteristics and the strain sensitive effect of the nanocavity. Simulation ...
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    This paper reports the theoretical and experimental investigations of the strain-induced resonant wavelength shift effect of a modified single-defect 2-dimensional (2D) photonic crystal (PhC) nanocavity resonator. The nanocavity was created by modifying the geometry, i.e., the diameters and shapes, of some specific holes in the triangular-lattice 2D PhC. Structural and optical simulations were performed based on the finite element method (FEM) and finite difference time domain (FDTD), respectively, to theoretically determine the optical characteristics and the strain sensitive effect of the nanocavity. Simulation results showed a linear relationship between strain and the shift of resonant wavelength of the nanocavity. The wavelength shifts due to longitudinal and transverse strains were theoretically determined to be 1.9 and 0.25pm/microstrain, respectively. The PhC nanocavity was also fabricated and the strain sensitive effect was measured. Experimental results confirmed the strain-induced resonant wavelength shift effect in the nanocavity. The resonant peak of the nanocavity was shifted about 100 pm to the longer wavelength when the nanocavity was stretched with a tensile strain of 300microstrain along the light-transmission direction. These results show a potential of using a PhC cavity to detect the strain by monitoring its resonant wavelength shift.
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    Journal Title
    IEEE Sensors Journal
    Volume
    11
    Issue
    11
    DOI
    https://doi.org/10.1109/JSEN.2011.2157122
    Subject
    Atomic, molecular and optical physics
    Mechanical engineering
    Engineering practice and education not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/44349
    Collection
    • Journal articles

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