Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 130, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physe.2021.114711
Keywords
Ring resonator; Surface plasmon; Nano-interconnect; Optical filters
Funding
- DSTSERB, Government of India through the RD grant [SR/FTP/PS211/2012]
- DST-SERB
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A compact plasmonic metal-insulator-metal ring resonator is proposed in this article, which can function as an optical filter by adjusting structural parameters, showing different performance with various metal materials and channel designs. Three transmission peaks are observed for the first time in the near infrared regime, indicating a wide range of potential applications.
In this article, a compact plasmonic metal-insulator-metal ring resonator has been proposed and investigated. The proposed waveguide structure can be turned into a Plasmonic optical filter through alteration in various parameters of the structure geometry, such as radius of ring resonator, width of the waveguide channel, dielectric constant of insulating material and the shifting of the output channel. It is observed that the transmission peaks exhibit redshift with increased radius of the ring resonator and decreased channel width. Several metals have been successfully trialed, in which the silver metal shows high response with near 90% transmission. For the first time, three transmission peaks have been observed in the near infrared regime with air cavity over a wide range of bandwidth, which makes it strong candidate for the significant nano-interconnect and sensing applications.
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