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中文摘要：
提出并设计了650 nm波段的全复合材料倒脊型马赫曾德尔热光开关，优化了该热光开关的主要参数，并利用COMSOL和Rsoft软件对器件传输效果进行了理论模拟。该有机无机复合材料为实验室自主合成。由于材料主体为Si-O-Ti刚性无机骨架，热稳定性效果得到提高，并具有较高的热光系数。改变材料中Ti的含量以改变材料的折射率，制得两种不同折射率的该材料，分别作为芯和包层。该材料具有好的成膜特性和可加工性，制作工艺简单。该器件损耗低，并且具有潜在的传感应用。对制作的热光开关进行了测试，得到了良好的近场输出光斑，插入损耗6.5 dB，传输损耗0.85 dB/cm，上升时间为190 μs，下降时间为350 μs，消光比8.5 dB。该热光开关在塑料光纤传输系统中具有广阔的应用前景。
英文摘要：
We propose and design a kind of 650 nm band all organic-inorganic hybrid material embedded Mach-Zehnder （MZ） thermo-optic switch. The main parameters of the thermo-optic switch are optimized, and theoretical transmission simulations of this device are carried out by COMSOL and Rsoft. The material is synthesized in our laboratory. The thermal stability of the material has been greatly improved, since the body of this material is a rigid inorganic backbone of Si-O-Ti chains, and the material has a higher thermo-optic coefficient. By altering the refractive index through changing the Ti cotent in the material, we get the core and clab materials respectively. The material has good film characteristic and workability, which make the production process simple. The device is low loss, and has potential sensing applications. The thermo-optic switch is tested and we get a good near-field output spot. The insertion loss of the device is 6.5 dB, the propagation loss is 0.85 dB/cm, the rise response time is 190 μs and the fall response time is 350 μs, the extinction ratio is 8.5 dB. The thermo-optic switch has broad application prospects in plastic optical fiber transmission system.
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