Graphene based tunable grating structure
Graphene based tunable grating structure
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DOI：
10.1088/2053-1591/aaea9a
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发表时间：
2018-11
影响因子：
2.3
通讯作者：
Shobhit K. Patel;Mayurkumar Ladumor;Vishal Sorathiya;T. Guo
中科院分区：
文献类型：
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作者：
Shobhit K. Patel;Mayurkumar Ladumor;Vishal Sorathiya;T. Guo
我们提出了石墨烯-硅混合可调谐光栅结构。石墨烯部分在硅波导中交错排列。周期性和啁啾光栅结构是本文提出的两种不同的设计。给出了两种结构的反射率、透射率、电场强度和费米能量结果。结果清楚地表明，滤光片的中心波长和带宽是通过改变石墨烯部分的化学势来调节的。还改变周期性光栅的周期以检查响应。结果表明，增加光栅周期可以降低电场强度，增加谱带。所提出的可调谐光栅结构预计将成为适用于滤波器、传感器和循环器的多种红外系统的构建块。
We propose graphene-silicon hybrid tunable grating structure. The graphene sections are interleaved in silicon waveguide. Periodic and chirped grating structures are the two different designs are presented in the paper. The reflectance, transmittance, electric field intensity and fermi energy results are presented for both the structures. The results clearly indicate that filter central wavelength and bandwidth is tuned by changing the graphene sections chemical potential. The period of periodic grating is also changed to check the response. Results show that electric field intensity is decreased and bands are increased by increasing the grating period. The proposed tunable grating structure is envisioned to become building blocks of several infrared systems that is applicable in filters, sensors and circulators.