Waveguide-Type Optical Functional Devices Using Chiral and Nonlinear Polymers

在这项科学研究资助计划(C)下，研究了使用具有非线性的手性或抗磁性聚合物的新型和简单的光学功能器件。这些器件的工作原理是通过非线性掺杂染料的聚甲基丙烯酸甲酯(PMtMA)和MtMA/BzMA共聚体等手性聚合物介电张量中的非对角元进行TE-TM模转换。通过理论和实验分析，得到以下结果：(1)首次用聚合物(MtMA/BzMA)平板波导实现了隔离比约15db的聚合物波导型光调制器。(2)首次从理论和实验上综合了由非线性NPP或FMA染料掺杂PMMA平板光波导构成的聚合物波导型光调制器的基本工作原理。(3)为了提高调制效率，尝试了几种制作沟道型PMtMA波导的方法，这些结果发表在POF和PAT国际会议的两个期刊和三个论文集上。因此，研究人员对科学研究助学金表示诚挚的感谢。

New and simple optical functional devices using a chiral or diamagnetic polymer with nonlinearity has been studied under this Grant-in-Aid for Scientific Research (C). Operation principle in these devices is based on the TE-TM mode conversion through the off-diagonal element in dielectric tensor of the chiral polymers such as nonlinear dye-doped polymenthylmethacrylate (PMtMA) and coploymer of MtMA/BzMA.Through the theoretical and experimental analyses, the following results were obtained.(1) Polymer waveguide-type optical isoplator with an isolation ratio of about 15dB was demonstrated for the first time, using the Poly(MtMA/BzMA) slab waveguide.(2) Basic operation of the polymer waveguide-type optical modulators, which are consisting of the nonlinear NPP or FMA dye-doped PMtMA slab waveguides, were comfirmed thoretically and experimentally. The obtained moduration indeces were 25〜50%.(3) To improve the modulation efficiency, several methods to fabricate the channel-type PMtMA waveguide were attempted.These results were reported on the two journals and three proceedings of POF and PAT international conferences. So, the investigator would like to express his sincere thanks for this Grant-in-Aid for Science Research.