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With the rapid development of all-optical communication, the wavelength division multiplexing transmission system cannot meet the requirements of high capacity in optical networks, while mode division multiplexing uses the limited stability modes as independent channels to transmit information, improving the system capacity and spectrum efficiency, which is one of the key technologies in the construction of future optical network. In this paper, a mode division multiplexer of two-dimensional triangular lattice photonic crystal in 1.55 μm band based on the magneto-optic effect of Bi-doped compound rare earth iron garnet bulk single crystal is proposed. The defects of TbYbBiIG medium are introduced as mode splitting waveguides in photonic crystal, of which the permeability changes with the applied magnetic field in different polarization modes. Therefore, mode division multiplexing in 1.55 μm band can be achieved by controlling the propagations of TE and TM mode. The band and transmission characteristics of this device can be analyzed by using the plane wave expansion and finite difference time domain method. The results show that the transmission rates of TE and TM modes both exceed 92% and channel segregation degrees reach 19.7 dB and 42.1 dB respectively. These features indicate the important application prospect in the future high-capacity optical transmission system.
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Keywords:
- photonic crystal /
- magneto-optic effect /
- mode division multiplexing /
- 1.55 μm
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[2] Tamaki T, Kaneda H, Kawanmura N 1991 Appl. Phys. 70 4581
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[14] Yao S C, Fu S N, Zhang M M, Tang M, Shen P, Liu D M 2013 Acta Phys. Sin. 62 144215 (in Chinese) [姚殊畅, 付松年, 张敏明, 唐明, 沈平, 刘德明 2013 62 144215]
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[17] Zhou F, Fei H M, Yang Y B, Wu J J 2014 Infrared Millim. Waves 33 155 (in Chinese) [周飞, 费宏明, 杨毅彪, 武建加 2014 红外与毫米波学报 33 155]
[18] Chul S K, Jae E K, Hae Y P 2000 Phys. Rev. B 61 15523
[19] Pozar D M 2011 Microwave Engineering (4th Ed.) (Wiley: John Wiley & Sons, Inc.) p477
[20] Wang W, Lan Z W, Ji H, Wang H C 2002 Electron. Compon. Mater. 21 23 (in Chinese) [王巍, 兰中文, 姬洪, 王豪才 2002 电子元件与材料 21 23]
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[1] Scott G B, Laklison D E 1976 IEEE Trans. Magn. 12 292
[2] Tamaki T, Kaneda H, Kawanmura N 1991 Appl. Phys. 70 4581
[3] Matsuda K, Minemoto H, Kamada O 1987 IEEE Trans. Magn. 23 3479
[4] Li M, Xu Z C, Huang M, Yan M, Zhang Z L 2006 Infrared Millim. Waves 25 101 (in Chinese) [李淼, 徐志成, 黄敏, 严密, 张志良 2006 红外与毫米波学报 25 101]
[5] Ying J F, Yi S L, Sheng D L 2013 Opt. Lett. 38 4915
[6] Wang D, Cui K Y, Feng X, Huang Y D 2013 Chin. Phys. B 22 094209
[7] Jiang B, Zhang Y J, Zhou W J, Chen W, Liu A J, Zheng W H 2011 Chin. Phys. B 20 024208
[8] Zhao X X, Zhu Q F, Zhang Y 2009 Chin. Phys. B 18 2864
[9] Chen H M, Meng Q 2011 Acta Phys. Sin. 60 014202 (in Chinese) [陈鹤鸣, 孟晴 2011 60 014202]
[10] Chen H M, Su J, Wang J L, Zhao X Y 2011 Opt. Express 19 3599
[11] Zhang X Y, Hosseini A, Charkravarty S 2013 Opt. Lett. 38 4931
[12] Han J W, Zhang J, Zhao Y L, Gu W Y 2013 Optik 124 1287
[13] Guillaμme L C, Yves Q, Antoine L R 2013 Opt. Express 21 31646
[14] Yao S C, Fu S N, Zhang M M, Tang M, Shen P, Liu D M 2013 Acta Phys. Sin. 62 144215 (in Chinese) [姚殊畅, 付松年, 张敏明, 唐明, 沈平, 刘德明 2013 62 144215]
[15] Sun L L, Shen Y F, Wang J, Zhou J 2010 Acta Photon. Sin. 39 1796 (in Chinese) [孙露露, 沈义峰, 王娟, 周杰 2010 光子学报 39 1796]
[16] Fan F, Guo Z, Bai J J, Wang X H, Chang S J 2011 Acta Phys. Sin. 60 084219 (in Chinese) [范飞, 郭展, 白晋军, 王湘晖, 常胜江 2011 60 084219]
[17] Zhou F, Fei H M, Yang Y B, Wu J J 2014 Infrared Millim. Waves 33 155 (in Chinese) [周飞, 费宏明, 杨毅彪, 武建加 2014 红外与毫米波学报 33 155]
[18] Chul S K, Jae E K, Hae Y P 2000 Phys. Rev. B 61 15523
[19] Pozar D M 2011 Microwave Engineering (4th Ed.) (Wiley: John Wiley & Sons, Inc.) p477
[20] Wang W, Lan Z W, Ji H, Wang H C 2002 Electron. Compon. Mater. 21 23 (in Chinese) [王巍, 兰中文, 姬洪, 王豪才 2002 电子元件与材料 21 23]
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