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基于光子晶体的光子局域特性，并利用光子晶体的介观压光效应，提出了一种新型的双通道可调滤波器结构. 采用传输矩阵法对该滤波器的光学传输特性进行了理论推导，建立了透射谱与光子晶体结构参数的关系，讨论了介观压光效应对双缺陷光子晶体透射谱的影响，并对所设计的光子晶体结构进行了数值模拟. 结果表明：随着入射角度的增大，缺陷峰发生蓝移. 随着各介质层折射率或几何厚度的增加，缺陷峰发生红移. 当光子晶体发生轴向拉伸应变时，缺陷峰的位置向长波长移动，但缺陷峰的峰值大体不变，从而验证了此滤波器的可调节性. 该光子晶体滤波器结构紧凑，可调谐性好，为光子晶体激光器及传感器的设计提供了一定的理论参考.A dual channel tunable filter structure has been proposed based on the local characteristic of photonic crystals and the mesoscopic calender effect of photonic crystals. The optical transmission characteristics of the filter have been derived theoretically using the transfer matrix method, and the relationship between the transmission spectrum and structural parameters of photonic crystals has been established. Problems how the mesoscopic calender effect influences the transmission spectrum of photonic crystals with dual defects have been discussed and the structure of photonic crystals has been numerically simulated. The emulational results show that defect modes have a blue shift with the increase of the incident angle, while they have a red shift with the increase of dielectric layers' refractive index or geometrical thickness. When in photonic crystals occurs axial stretched strain, the locations of defect modes will move towards long wavelength side, but the values of defect peaks keep constant generally. Thereby, the filter's tunable property has been verified. This photonic crystal filter with good tunability has a compact structure, which may provide a certain theoretical reference for the design of photonic crystal lasers and sensors.
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Keywords:
- photonic crystal /
- mesoscopic calender effect /
- transfer matrix method /
- transmission spectrum
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[1] Yablonovitch E 1987 Phys. Rev. 58 2059
[2] [3] John S 1987 Phys. Rev. Lett. 58 2486
[4] [5] [6] Vipin Kumar, Suthar B, Arun Kumar, Singh Kh S, Bhargava A 2014 Silicon 6 73
[7] Liu Q N 2013 Chinese Journal of Lasers 40 0806001 (in Chinese) [刘启能 2013 中国激光 40 0806001]
[8] [9] [10] Fan C Z, Wang J Q, He J N, Ding P, Liang E J 2013 Chin. Phys. B 22 074211
[11] [12] Liu Y H, Dong L J, Liu L X, Shi Y L 2013 Acta Opt. Sin. 33 0823001 (in Chinese) [刘艳红, 董丽娟, 刘丽想, 石云龙 2013 光学学报 33 0823001]
[13] [14] Wu J J, Gao J X 2013 Acta Phys. Sin. 62 124102 (in Chinese) [武继江, 高金霞 2013 62 124102]
[15] Guan B L, Guo X, Zhang J L, Ren X J, Guo S, Li S, Chuai D X, Shen G D 2011 Acta Phys. Sin. 60 014209 (in Chinese) [关宝璐, 郭霞, 张敬兰, 任秀娟, 郭帅, 李硕, 揣东旭, 沈光地 2011 60 014209]
[16] [17] [18] Zhou P, You H Y, Wang S Y, Li H Y, Yang Y M, Chen L Y 2002 Acta Phys. Sin. 51 2276 (in Chinese) [周鹏, 游海洋, 王松有, 李合印, 杨月梅, 陈良尧 2002 51 2276]
[19] Bui Thanh Tung, Dzung Viet Dao, Taro Ikeda, Yoshiaki Kanamori, Kazuhiro Hane, Susumu Sugiyama 2011 Procedia Engineering 25 1357
[20] [21] [22] Fang Y T, Shen T G, Tan X L 2004 Acta Opt. Sin. 24 1557 (in Chinese) [方云团, 沈廷根, 谭锡林 2004 光学学报 24 1557]
[23] [24] Lu X K, Guo M T, Su J P, Gong Q X, Wu J K, Liu J L, Chen M, Ma F Y 2013 Acta Phys. Sin. 62 084208 (in Chinese) [卢小可, 郭茂田, 苏建坡, 弓巧侠, 武进科, 刘建立, 陈明, 马凤英 2013 62 084208]
[25] [26] Fan W L, Dong L F 2013 Chin. Phys. B 22 014213
[27] Zhang H Y, Gao Y, Zhang Y P, Wang S F 2011 Chin. Phys. B 20 094101
[28] [29] Li Q L, Wen T D, Xu L P, Wang Z B 2013 Acta Phys. Sin. 62 184212 (in Chinese) [李乾利, 温廷敦, 许丽萍, 王志斌 2013 62 184212]
[30] [31] Privorotskaya N L, Choi C J, Cunningham B T, King W P 2010 Sensors and Actuators A 161 66
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