Publications by authors named "Janderson Rocha Rodrigues"
Complex non-local behavior makes designing high efficiency and multifunctional metasurfaces a significant challenge. While using libraries of meta-atoms provide a simple and fast implementation methodology, pillar to pillar interaction often imposes performance limitations. On the other extreme, inverse design based on topology optimization leverages non-local coupling to achieve high efficiency, but leads to complex and difficult to fabricate structures.
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- Fabrication imperfections like roughness and discontinuities in photonic wire waveguides can severely impact their performance, leading to high insertion losses and reduced production efficiency.
- The study focuses on a new platform using silicon nano-pillars to create a sub-wavelength grating waveguide that exhibits robustness to these types of discontinuities.
- Experimental results show that this innovative waveguide design experiences significantly lower transmission losses, measuring less than 2.2 dB for certain discontinuities, making it a promising solution for developing low-loss optical waveguides across the telecommunication spectrum.