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提出了一种基于六角格子光子晶体波导微腔和Fabry-Perot(FP)腔非对称耦合的全光二极管结构, 它由一个包含非线性Kerr介质的高Q值微腔与一个光子晶体波导中的FP腔组成. 通过有限时域差分方法对其传输特性进行了仿真, 发现通过两腔的非对称耦合可以实现在特定光强度下的正向传输、反向截止的功能. 在靠近微腔方向光入射时, 特定强度的光可以激发非线性微腔的Kerr效应, 改变了Fano腔的共振频率, 从而变成透射状态. 而远离微腔方向光入射, 由于这个不对称的结构造成场局域的分布不对称, 激发微腔Kerr效应的光强还不够, 所以光不能透射. 所设计的全光二极管结构具有良好的性能参数: 最大透射率高和高透射比、光强阈值低和易于集成等.A high efficiency all-optical diode based on 2D hexagonal lattice photonic crystal (PC) waveguide is proposed. The structure is asymmetrically coupled by a high Q factor micro-cavity-containing nonlinear Kerr medium and a F-P cavity in PC waveguide. The transmission properties are numerically investigated by finite-difference time-domain (FDTD) method. Because of interference between the two cavities, the structure can achieve the function of forward transmission and backward cut-off under a suitable light intensity. For light incidence close to the direction of micro-cavity, nonlinear Kerr effect of micro-cavity can be excited by a certain light intensity. Then the resonant frequency of Fano cavity will change and forward incidence becomes transmission from reflective state. But for light incidence away from the direction of micro-cavity, the field distribution is asymmetric due to the asymmetric structure, so backward incidence needs stronger incidence light to excite Kerr effect and keeps reflective state. This design of all-optical diode has many advantages, including high maximum transmittance, high transmittance contrast ratio, low power threshold, and ease of integration, and so on.
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Keywords:
- all-optical devices /
- photonic crystal waveguides /
- all-optical diode
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[2] John S 1987 Phys. Rev. Lett. 58 2486
[3] Ho K M, Chan C T, Soukoulis C M 1990 Phys. Rev. Lett. 65 3152
[4] Yang Q Q, Hou L T 2009 Acta Phys. Sin. 58 8345 (in Chinese) [杨倩倩, 侯蓝田 2009 物理学报 58 8345]
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[12] Li Z J, Zhang Y, Li B J 2006 Opt. Express 14 3887
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[20] Chen Y, Wang W Y, Yu N 2014 Acta Phys. Sin. 63 034205 (in Chinese) [陈颖, 王文跃, 于娜 2014 物理学报 63 034205]
[21] Zhuang Y Y, Zhou W, Ji K, Chen H M 2015 Acta Phys. Sin. 64 224202 (in Chinese) [庄煜阳, 周雯, 季珂, 陈鹤鸣 2015 物理学报 64 224202]
[22] Scalora M, Dowling J P, Bowden C M, Bloemer M J 1994 Appl. Phys. 76 2023
[23] Tocci M D, Bloemer M J, Scalora M, Dowling J P, Bowden C M 1995 Appl. Phys. Lett. 66 2324
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[25] Lin X S, Wu W Q, Zhou H, Zhou K F, Lan S 2006 Opt. Express 14 2429
[26] Zhou H, Zhou K F, Hu W, Guo Q, Lan S, Lin X S, Gopal A V 2006 Appl. Phys. 99 123111
[27] Feise M W, Shadrivov I V, Kivshar Y S 2005 Phys.Rev. E 71 037602
[28] Hu X Y, Chin X, Li Z Q, Gong Q H 2010 New J. Phys. 12 023029
[29] Xue C H, Jiang H T, Chen H 2010 Opt. Express 18 7479
[30] Khanikaev A B, Steel M J 2009 Opt. Express 17 5265
[31] Callo K, Assanto G 2001 Appl. Phys. Lett. 79 314
[32] Philip R, Anija M, Yelleswarapu C S, Rao D 2007 Appl. Phys. Lett. 91 141118
[33] Konorov S O, Biryukov D A S, Bugar I, Beloglazov M J, Skibina N B, Chorvat jr D, Chorvat D, Scalora M, Zheltikov A M 2004 Appl. Phys. B: Lasers Opt. 34 1417
[34] Hwang J, Song M H, Park B, Nishimura S, Toyooka T, Wu J W, Takanishi Y, Ishikawa K, Takezoe H 2005 Nat. Mater. 4 383
[35] Song M H, Park B, Takanishi Y, Ishikawa K, Nishimura S, Toyooka T, Takezoe H 2006 Thin Solid Films. 509 49
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[1] Yablonovitch E 1987 Phys. Rev.Lett. 58 2059
[2] John S 1987 Phys. Rev. Lett. 58 2486
[3] Ho K M, Chan C T, Soukoulis C M 1990 Phys. Rev. Lett. 65 3152
[4] Yang Q Q, Hou L T 2009 Acta Phys. Sin. 58 8345 (in Chinese) [杨倩倩, 侯蓝田 2009 物理学报 58 8345]
[5] Russell P 2003 Science 299 358
[6] Lou S Q, Wang Z, Ren G B, Jian S S 2004 Chin. Phys. 13 1052
[7] Wang C X, Xu X S, Li F, Du W, Xiong G G, Liu Y L, Chen H D 2006 Chin. Phys. Lett. 23 2472
[8] Zhu X G, Yu T B, Chen S W, Shi Z, Hu S J, Lai Z Q, Liao Q H, Huang Y Z 2009 Acta Phys. Sin. 58 1014 (in Chinese) [朱桂新, 于天宝, 陈淑文, 石哲, 胡淑娟, 赖珍荃, 廖清华, 黄永箴 2009 物理学报 58 1014]
[9] Lu H, Tian H P, Li C H, Yue J F 2009 Acta Phys. Sin. 58 2049 (in Chinese) [鲁辉, 田慧平, 李长红, 纪越峰 2009 物理学报 58 2049]
[10] Zhao Y H, Qian C J, Qiu K S, Gao Y N, Xu X L 2015 Opt. Express 23 9211
[11] Chen H M, Wang G D 2011 Acta Opt. Sin. 31 0323006 (in Chinese) [陈鹤鸣, 王国栋 2011 光学学报 31 0323006]
[12] Li Z J, Zhang Y, Li B J 2006 Opt. Express 14 3887
[13] Zhou X P, Shu J 2013 Acta Opt. Sin. 33 0423002 (inChinese) [周兴平, 疏静 2013 光学学报 33 0423002]
[14] Sesay M, Jin X, Ouyang Z B 2013 J. Opt. Soc. Am. B 30 2043
[15] Ren H L, Qin Y L, Liu K, Wu Z F, Hu W S, Jiang C, Jin Y H 2010 Chin. Opt. Lett. 8 749
[16] Ren H L, Qin Y L, Wen H, Cao Q J, Guo S Q, Chang L P, Hu W S, Jiang C, Jin Y H 2012 IEEE Photon. Tech. Lett. 24 332
[17] Fasihi K, Mohammadnejad S 2009 Opt. Express 17 8983
[18] Wu Y D, Hsu K W, Shih T T, Lee J J 2009 J. Opt. Soc. Am. B 26 640
[19] Yang C Y, Xu X M, Ye T, Miao L P 2011 Acta Phys. Sin. 60 017807 (in Chinese) [杨春云, 徐旭明, 叶涛, 缪路平 2011 物理学报 60 017807]
[20] Chen Y, Wang W Y, Yu N 2014 Acta Phys. Sin. 63 034205 (in Chinese) [陈颖, 王文跃, 于娜 2014 物理学报 63 034205]
[21] Zhuang Y Y, Zhou W, Ji K, Chen H M 2015 Acta Phys. Sin. 64 224202 (in Chinese) [庄煜阳, 周雯, 季珂, 陈鹤鸣 2015 物理学报 64 224202]
[22] Scalora M, Dowling J P, Bowden C M, Bloemer M J 1994 Appl. Phys. 76 2023
[23] Tocci M D, Bloemer M J, Scalora M, Dowling J P, Bowden C M 1995 Appl. Phys. Lett. 66 2324
[24] Zhao N S, Zhou H, Guo Q, Hu W, Yang X B, Lan S, Lin X S 2006 Opt. Soc. Am. B 23 2434
[25] Lin X S, Wu W Q, Zhou H, Zhou K F, Lan S 2006 Opt. Express 14 2429
[26] Zhou H, Zhou K F, Hu W, Guo Q, Lan S, Lin X S, Gopal A V 2006 Appl. Phys. 99 123111
[27] Feise M W, Shadrivov I V, Kivshar Y S 2005 Phys.Rev. E 71 037602
[28] Hu X Y, Chin X, Li Z Q, Gong Q H 2010 New J. Phys. 12 023029
[29] Xue C H, Jiang H T, Chen H 2010 Opt. Express 18 7479
[30] Khanikaev A B, Steel M J 2009 Opt. Express 17 5265
[31] Callo K, Assanto G 2001 Appl. Phys. Lett. 79 314
[32] Philip R, Anija M, Yelleswarapu C S, Rao D 2007 Appl. Phys. Lett. 91 141118
[33] Konorov S O, Biryukov D A S, Bugar I, Beloglazov M J, Skibina N B, Chorvat jr D, Chorvat D, Scalora M, Zheltikov A M 2004 Appl. Phys. B: Lasers Opt. 34 1417
[34] Hwang J, Song M H, Park B, Nishimura S, Toyooka T, Wu J W, Takanishi Y, Ishikawa K, Takezoe H 2005 Nat. Mater. 4 383
[35] Song M H, Park B, Takanishi Y, Ishikawa K, Nishimura S, Toyooka T, Takezoe H 2006 Thin Solid Films. 509 49
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