| All-Optical Switching Based on Azo Polymer Material |
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| 作者姓名： | 邓燕 罗艳华 王沛 鲁拥华 明海 张其锦 |
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| 作者单位： | [1]Institute of Photonics, University of Science and Technology of China, Hefei 230026 [2]Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10474093, the National Basic Research Programme of China under Grant No 2006CB302905, and the Chinese Academy of Sciences （KJCX3.SYW.H02）
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| 摘 要： | Conventional all-optical switches based on azo polymer films and the all-optical switches based on the attenuated total reflection （ATR） geometry are investigated. A conventional switch system, including a pump beam of 532 nm and a probe beam of 650 nm, is based on the photoinduced birefringence effect of azo polymer. An ATR switch in a prism-multilayer configuration is achieved by changing the reflectance of the probe beam with an external pump beam. The ATR method provides the substantial improvement of the speed and the efficiency of the modulation over the conventional method. Although the azo polymer response still remains relatively slow, an enhanced nonlinear refractive index of the azo polymer film can effectively increase the modulation.
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| 关 键 词： | 含氮聚合材料 电子光学 开关系统 双折射 |
| 收稿时间： | 2007-6-15 |
| 修稿时间： | 2007-06-15 |
All-Optical Switching Based on Azo Polymer Material |
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| DENG Yan,LUO Yan-Hua,WANG Pei,LU Yong-Hua,MING Hai,ZhANG Qi-Jing.All-Optical Switching Based on Azo Polymer Material[J].Chinese Physics Letters,2007,24(10):2849-2851. |
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| Authors: | DENG Yan LUO Yan-Hua WANG Pei LU Yong-Hua MING Hai ZhANG Qi-Jing |
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| Institution: | 1. Institute of Photonics, University of Science and Technology of China, Hefei 230026; 2.Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | Conventional all-optical switches based on azo polymer films and the all-optical switches based on the attenuated total reflection (ATR) geometry are investigated. A conventional switch system, including a pump beam of 532nm and a probe beam of 650nm, is based on the photoinduced birefringence effect of azo polymer. An ATR switch in a prism-multilayer configuration is achieved by changing the reflectance of the probe beam with an external pump beam. The ATR method provides the substantial improvement of the speed and the efficiency of the modulation over the conventional method. Although the azo polymer response still remains relatively slow, an enhanced nonlinear refractive index of the azo polymer film can effectively increase themodulation. |
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| Keywords: | 42 65 Pc 42 70 -a 78 66 Qn |
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