Research of composite wide band gap of 2-D photonic crystal
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Received Date:
2008-09-08
Accepted Date:
2008-10-28
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Abstract
In order to study the characteristics of 2-D photonic crystal constructed with two different medium rods,a triangular lattice photonic crystal constructed with layer medium rods/bottom medium and air rods/bottom medium was studied.By means of finite difference time domain method the curves of transmission coefficients versus incident frequencies under different conditions were obtained.The calculated results showed that a wide gap from low to high frequency appeared in the composite photonic crystal,so the electromagnetic wave could be prohibited in a wide frequency range.The further study showed the width of band gap was influenced by the external radius of layer medium rods,while defect mode in the band gap was greatly influenced by the internal radius,dielectric constant and middle layer's dielectric constant.In fact,it is possible to produce very narrow-band optical filters and switches by regulating the photonic crystal structure parameters.
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References
|
[1]
|
YABLONOVITCH E.Inhibited spontaneous emission in solid-state physics and electronics[J].Phys Rev Lett,1987,58(20):2059-2062. |
|
[2]
|
JOHN S.Strong localization of photons in disordered dielectric superlattices[J].Phys Rev Lett,1987,58(23):2486-2489. |
|
[3]
|
MALDOVAN M,THOMAS E,CARTER C.Layer-by-layer diamond-like woodpile structure with a large photonicband gap[J].A P L,2004,84(3):362-364. |
|
[4]
|
FENG Sh Sh,SHEN L F,HE S L.A two-dimensional photonic crystal formed by a triangular lattice of squaredielectric rodswith a large absolute band gap[J].Acta Physica Sinica,2004,53(5):1540-1544(in Chinese). |
|
[5]
|
LI X Ch,LIANG H Y,YI X Y,et al.The study of two-dimensional composite materials with wide band gap[J].Acta Physica Sinica,2007,56(5):2784-2790(in Chinese). |
|
[6]
|
GUAN Ch Y,YUAN L B.Analysis of band gap in honeycomb photonic crystal heterostructure[J].Acta Physica Sinica,2006,55(3):1244-1248(in Chinese). |
|
[7]
|
QIU M.Effective index method in heterostructure slab waveguide based two-dimensional photonic crystals[J].A P L,2002,81(7):1163-1165. |
|
[8]
|
XIAO S Sh,SHEN L F,HE S L.Large complete band gap at low and high frequencies in a two-dimensional anisotropic photonic crystal[J].Acta Physica Sinica,2002,51(12):2858-2865(in Chinese). |
|
[9]
|
ZHAO M M,LÜ Y W,YU J X.Effect of rotation on photonic band gap of two-dimensional square lattice photonic crystal with hollow rod[J].Acta Physica Sinica,2008,57(2):1061-1066(in Chinese). |
|
[10]
|
FANG Y T,SHEN T G,TAN X L.Absolute photonic band gaps of 2-D cubic compound lattice[J].Laser Technology,2004,28(4):344-351(in Chinese). |
|
[11]
|
ANDERSON C M,GIAPIS K P.Larger two-dimenisional photonicband gaps[J].Phys Rev Lett,1996,77(4):2949-2952. |
|
[12]
|
LI Zh Y,GU B Y,YANG G Zh.Large absolute band gap in 2-D anisotropic photonic crystal[J].Phys Rev Lett,1998,81(12):2574-2578. |
|
[13]
|
WANG B Zh.Calculation electromagnetic[M].Beijing:SciencePress,2002:52-56(in Chinese). |
|
[14]
|
TANG B Sh,YIN G W,XU J L,et al.Study on the transmission spectra of two-dimension photonic crystals with layered composite medium cylinder[J].Laser Technology,2007,31(2):127-130(in Chinese). |
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