Waveguide-Type Optical Functional Devices Using Chiral and Nonlinear Polymers

利用非线性的手性或抗磁性聚合物，研究了新的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染料掺杂聚甲基丙烯酸甲酯（PMtMA）和MtMA/BzMA共聚物等手性聚合物的介电张量中的非对角元进行TE-TM模式转换。通过理论和实验分析，得到了以下结果：(1)采用Poly（MtMA/BzMA）平板波导，首次实现了隔离比约为15dB的聚合物波导型光隔离器。(2)从理论上和实验上证实了由非线性NPP或FMA染料掺杂PMtMA平板波导组成的聚合物波导型光调制器的基本工作原理。得到的调制指数为25 ~ 50%。(3)为了提高调制效率，尝试了几种通道型PMtMA波导的制作方法。这些研究结果已发表在POF和PAT国际会议的两篇期刊和三篇论文集上。因此，研究者对此次科研资助表示衷心的感谢。

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.