Abstract
In this paper, a new approach for optical isolator based on the Plasmonic effect is proposed. Metallic nanoparticles of different sizes are used to realize the proposed idea. Metallic nanoparticles spin-coated on alumina thin layer that is coated on Silicon waveguide. We demonstrated that the proposed idea operates in a broadband spectral range (more than 800nm) as well as back-propagating wave attenuated more than 120dB. The proposed idea can enhance the isolation ratio and also can provide wider bandwidth for isolation. The proposed idea is based on solution process nanotechnology that is simple, low cost, and available.
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