Versatile waveguide polarizer incorporating an ultrathin discontinuous silver film
Versatile waveguide polarizer incorporating an ultrathin discontinuous silver film
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包含超薄不连续银膜的多功能波导偏振器
DOI：
10.1063/1.107512
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发表时间：
1992
影响因子：
4
通讯作者：
J. Haus
中科院分区：
文献类型：
--
作者：
M. Bloemer;J. Haus
我们展示了第一个横向磁（TM）通过波导偏振器适用于集成光学或光纤的几何形状。采用非连续银膜的波导的偏振特性是由于局部表面等离子体激元模式的激发。该偏振器具有大带宽（约100 nm）、高消光比，并且不依赖于敏感的相位匹配条件。我们说明了这些新的偏振特性的离子交换的平面波导覆盖有5纳米质量厚的银膜。在836 nm处测得的消光比为35 dB/mm，TM偏振损耗为2 dB/mm。薄膜特性和波导传输损耗的理论分析与实验进行了比较。
We demonstrate the first transverse magnetic (TM) pass waveguide polarizer suitable for integrated optic or fiber optic geometries. The polarizing properties of waveguides incorporating an ultrathin discontinuous silver film are due to excitation of a localized surface plasmon mode. The polarizers have a large bandwidth (≳100 nm), high extinction ratios, and do not rely on sensitive phase matching conditions. We illustrate these novel polarizing properties on ion‐exchanged planar waveguides overlayed with a 5‐nm‐mass thick silver film. The measured extinction ratio was 35 dB/mm at 836 nm with 2 dB/mm loss for the TM polarization. The theoretical analysis of the film properties and waveguide propagation losses is compared with the experiments.