Characteristics of all-optical switch in photochromic films containing spirooxazines

被引：0

作者：

Ning, Xiao-Dan ^{[1
]}

Fu, Shen-Cheng ^{[1
,2
]}

Zheng, Mei-Ling ^{[1
]}

Xie, Xin ^{[1
]}

机构：

[1] School of Science, Changchun University of Science and Technology, Changchun,130022, China

[2] School of Physics, Northeast Normal University, Changchun,130024, China

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2016年 / 45卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Coatings - Optical films - Polymethyl methacrylates - Photochromism - Holography - Silica;

D O I：

10.3788/gzxb20164506.0631003

中图分类号：

学科分类号：

摘要：

The different matrices films containing the photochromic molecules of spirooxazine were prepared by the spin-coating method and the drop-coating method, which were further applied to all-optical switch. The photochromic characteristics of spriooxazine doped polymethyl methacrylate and silicon dioxide films were investigated, and their absorption spectra were compared with each other. The results show that the intensity of the transmitted signal for the spriooxazine doped polymethyl methacrylate film obviously decays after multiple switching cycles, and the intensity of transmission signal for the spriooxazine doped silicon dioxide film keeps constant. Therefore, the latter one has a relatively higher optical-reversibility and is more suitable for all-optical switch. For the spirooxazine doped silicon dioxide film, photo-erasure and thermal-erasure were applied to the experiment of holographic optical switch. Then, the decay kinetics of the output optical signal was investigated. It is found that a shorter response time is obtained in photo-erasure. Based on photo-erasure, the optical switching characteristics of 5 mW, 10 mW and 25 mW were studied. The results show that the optimized power appears at 10 mW, in which the contrast of grating, the first order diffraction light intensity and the contrast radio are all the highest. © 2016, Science Press. All right reserved.

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