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合成了一种新型有机-无机接枝改性聚甲基丙烯酸甲酯(PMMA)材料,基于材料良好的热稳定性以及光学特性,研制出一种工作于可见光650nm波段的全聚合物热光开关芯片。芯片设计采用倒脊型波导结构,可有效地实现红光信号的单模传输。在650nm波长下应用塑料光纤对热光开关进行测试,得到平均开关时间约为600μs,消光比为8.2dB,驱动功率为22.6mW。该器件可广泛用于高密度光集成系统,可见光通信及生化传感等领域。
A new type of organic-inorganic graft modified polymethylmethacrylate (PMMA) was synthesized. Based on the good thermal stability and optical properties of the material, a all-polymer thermo-optic switch operating in the 650 nm band of visible light chip. Chip design using inverted ridge waveguide structure, which can effectively achieve single-mode red light signal transmission. The application of plastic optical fiber to 650nm wavelength of the thermo-optic switch was tested. The average switching time was about 600μs, the extinction ratio was 8.2dB and the driving power was 22.6mW. The device can be widely used in high-density optical integration systems, visible light communications and biochemical sensors and other fields.