论文标题
高灭绝比等离子体波导偏振层
A High Extinction Ratio Plasmonic Waveguide Polarizer
论文作者
论文摘要
在这项工作中已经研究了一种增加等离子波导偏振层偏振层灭绝比的新方法。将铝涂在SU-8波导顶部的20微米多链图案中，以激发表面等离子体。模拟和实验结果已显示，由于Al涂层区域和未涂层区域之间的耦合损失以及金属边缘的散射，多条纹偏振器的灭绝比比具有相同总铝涂层长度的单条带偏光层的灭绝比。该偏振器在各种波长范围内的表征，在1550 nm时显示出46 dB的高灭绝比在980 nm波长下的26.8 dB。
A novel method for increasing the extinction ratio of plasmonic waveguide polarizer has been investigated in this work. Aluminum was coated in a 20 microns multi-strips pattern on the top of a SU-8 waveguide to excite the surface plasmons. Simulation and experimental results have been shown the extinction ratio of the multi-strip polarizer is more than the single strip ones with the same total aluminum-coated length due to the coupling loss between Al coated and uncoated region and also the scattering at the edge of metal. This polarizer was characterized over a wide range of wavelengths and showed a high extinction ratio of 46 dB at 1550 nm and 26.8 dB at 980 nm wavelengths.
