四元异质结构光子晶体的双通道光学滤波特性
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摘要
为了设计高品质的光学滤波器,采用传输矩阵法研究四元异质结构光子晶体(ABC)~7D(CBA)~7的双通道光学滤波特性。结果表明,随着A(或C)介质薄膜光学厚度D_A(或D_C)的增大,滤波器短波通道的滤波品质因子降低,长波通道的滤波品质因子升高;随着B介质薄膜光学厚度D_B增大,滤波器短波通道和长波通道的滤波品质因子均下降;随着D介质薄膜光学厚度D_D增大,滤波器短波通道的滤波品质因子升高,而长波通道的滤波品质因子降低;随着各薄膜介质层光学厚度增大,滤波器双通道均向长波方向红移,但各滤波通道的光透射率均保持100%不变。该研究结果可为光子晶体设计新型光学滤波器件、光学开关等提供参考。
In order to design optical filter with high quality,dual-channel optical filter in quaternary-heterostructure photonic crystal(ABC)~7D(CBA)~7was constructed by using transfer matrix method and the characteristics were studied.The results show that,with the increasing of D_A(or D_C),the filtering quality factor of short wave channel decreases and quality factor of long wave channel increases.With the increasing of D_B,both the filtering quality factors of short and long wave channels decrease.With the increasing of D_D,quality factor of short wave channel increases and quality factor of long wave channel decreases.With the increasing of optical thickness,both channels of the filter are red shifted toward long wave.Optical transmittances of each filter channel remain constant perfectly.The study can provide the reference for the design of new optical filters and optical switches of photonic crystals.
In order to design optical filter with high quality,dual-channel optical filter in quaternary-heterostructure photonic crystal(ABC)~7D(CBA)~7was constructed by using transfer matrix method and the characteristics were studied.The results show that,with the increasing of D_A(or D_C),the filtering quality factor of short wave channel decreases and quality factor of long wave channel increases.With the increasing of D_B,both the filtering quality factors of short and long wave channels decrease.With the increasing of D_D,quality factor of short wave channel increases and quality factor of long wave channel decreases.With the increasing of optical thickness,both channels of the filter are red shifted toward long wave.Optical transmittances of each filter channel remain constant perfectly.The study can provide the reference for the design of new optical filters and optical switches of photonic crystals.
引文
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[2]JOHN S.Strong localization of photons in certain disordered dielectric superlattices[J].Physical Review Letters,1987,58(23):2486-2489.
[3]SU A,GAO Y J.Light propagation characteristics of one-dimensional photonic crystal with double-barrier quantum well[J].Acta Physica Sinica,2012,61(23):234208(in Chinese).
[4]ZOU J H,ZHANG J.Photonic bandgap compensation and extension for hybrid quasiperiodic heterostructures[J].Acta Physica Sinica,2016,65(1):014214(in Chinese).
[5]WEI J J,SU A,GAO Y J,et al.Degeneracy effect of defects on transmission spectrum band of photonic crystal[J].Laser Technology,2017,41(1):56-70(in Chinese).
[6]PENG J K,HAN Y L,WANG H,et al.Defect-mode splitting in 1-D mirror magneto-optical photonic crystal[J].Laser Technology,2016,40(1):78-81(in Chinese).
[7]LIU Y F,LIU B,CHEN J,et al.Study on filtering characteristics based on tooth-shaped photonic crystal waveguide[J].Laser Technology,2016,40(2):237-240(in Chinese).
[8]XU J Y,SU A,PAN J H,et al.Effect of double negative medium on the transmission spectra of onedimensional photonic crystal quantum well[J].Infrared and Laser Engineering,2013,42(8):2156-2161(in Chinese).
[9]ZHANG Zh X,XIAO J.Analysis of energy band structure of 1-D photonic crystal[J].Laser Technology,2015,39(4):525-527(in Chinese).
[10]LIU W K,SUN Y,DONG X W.Investigation on slow light in composite-structure photonic crystal coupled-cavity waveguide[J].Laser Technology,2017,41(4):591-595(in Chinese).
[11]LIU J,TIE Sh N,LU H D.Multi-channel drop filter based on twodimensional photonic crystal[J].Optic and Precision Engineering,2016,24(5):1021-1027(in Chinese).
[12]SU A,MENG Ch J,GAO Y J.Modulation of activated impurity on filter property of photonic crystal quantum well[J].Chinese Journal of Lasers,2014,41(3):0306001(in Chinese).
[13]SU A,MENG Ch J,GAO Y J.Filter with one-dimensional photonic crystal quantum well possessing high-quality filtering functions[J].Chinese Journal of Lasers,2013,40(10):1006001(in Chinese).
[14]MENG Ch J,SU A,GAO Y J.Photonic crystal quantum well with active impurity possessing high efficient optical filtering and amplifying functions[J].Infrared and Laser Engineering,2013,42(11):3207-3212(in Chinese).
[15]DENG L E,GONG L.Reflection characteristics of one-dimensional polybasic photonic crystals by using heterostructure[J].Acta Photonica Sinica,2016,45(5):516002(in Chinese).
[16]CHEN Y,WANG W Y,FAN H Q,et al.Achievement of multichannel simultaneous adjustable filtering using hetero-structure photonic crystal cavities[J].Infrared and Laser Engineering,2014,43(10):3399-3403(in Chinese).