Broadband silicon core photonics crystal fiber polarization filter based on surface plasmon resonance effect
Broadband silicon core photonics crystal fiber polarization filter based on surface plasmon resonance effect
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DOI：
10.1016/j.optcom.2020.126587
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发表时间：
2021-03
影响因子：
2.4
通讯作者：
Yi-Lin Yu;H. Kishikawa;S. Liaw;Munkhbayar Adiya;N. Goto
中科院分区：
文献类型：
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作者：
Yi-Lin Yu;H. Kishikawa;S. Liaw;Munkhbayar Adiya;N. Goto
本文提出了一种基于熊猫硅芯的光子晶体光纤，并将其应用于偏振滤波器。空气孔周围的Au膜涂层充当等离子体激元活性金属。利用有限元法对光纤的限制损耗和消光比进行了研究。通过调节光纤长度，可使光纤的工作波长范围达到1 μ m。因此，当长度增加到6mm时，也获得了覆盖光纤通信频带的波长带。结果表明，所设计的硅芯光子晶体光纤在近红外波段实现了良好的滤波效果，甚至可以扩展到中红外波段。此外，所提出的光纤装置可以容易地与现有的光纤通信和传感系统集成。
In this article, a panda-like silicon core based photonics crystal fiber was proposed and applied onto a polarization filter. Au film coating surrounding the air holes acted as a plasmonic active metal. Using the Finite element method, the quality of the proposed fiber was investigated, including confinement loss and extinction ratio. By adjusting the length of the proposed fiber, the applicable operating wavelength region could reach up to 1 μ m easily. Thus when the length increased to 6 mm, the wavelength band covered fiber communication band was also obtained. As a result, the proposed silicon core photonics crystal fiber achieved a good filtering effect in the near-infrared, even extending to mid-infrared. Moreover, the proposed fiber device can easily integrate with the existing optical fiber communication and sensing system.