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Enhancement of modulation depth of an all-optical switch using an azo dye-ethyl red film

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TN929.1[电子电信—通信与信息系统;电子电信—信息与通信工程] TQ613.1[化学工程—精细化工]
作者机构：[1]Physics Experimental Teaching Center, School of Physics, Nankai University, Tianjin 300071, China, [2]Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology Chinese Academy of Sciences, Guangzhou 510301, China, [3]Photonic Center, School of Physics, Nankai University, Tianjin 300072, China
相关基金：Project supported by the National Natural Science Foundation of China （Grant No. 10774152）, the Science and Technology Foundation of Guangzhou City, China （Grant No. 2008J1-C021）, and the Research Fund for the Doctoral Program of Higher Education of China （Grant No. 20070055103）.

作者：陆文强[1], 陈桂英[2], 郝召锋[3], 许京军[3], 田建国[3], 张春平[3]

关键词：全光开关, 偶氮染料, 调制深度, 乙基红, 红膜, 聚甲基丙烯酸甲酯, 垂直探测, 有机玻璃, all-optical switch, azo dye ethyl-red film, modulation depth

中文摘要：

<正>The polymethyl methacrylate(PMMA) film doped with an azo dye ethyl-red(ER) film is employed to demonstrate the properties of an all-optical switch by its photoinduced dichroism and birefringence.We show how to enhance remarkably the modulation depth of all-optical switches almost to 100%by using two linear polarization beams:one beam is inclined at 45°with respect to the probing beam and serves as a pumping beam,and the other beam is perpendicular to the probing beam and used as an erasing beam.Furthermore,a maximum-to-minimum output intensity ratio of 2000:1 is achieved in experiment,which is very useful and important for optical storages and image displays.

英文摘要：

The polymethyl methacrylate （PMMA） film doped with an azo dye ethyl-red （ER） film is employed to demonstrate the properties of an all-optical switch by its photoinduced dichroism and birefringence. We show how to enhance remarkably the modulation depth of all-optical switches almost to 100% by using two linear polarization beams： one beam is inclined at 45° with respect to the probing beam and serves as a pumping beam, and the other beam is perpendicular to the probing beam and used as an erasing beam. Furthermore, a maximum-to-minimum output intensity ratio of 2000：1 is achieved in experiment, which is very useful and important for optical storages and image displays.

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