A realistic approach for designing a single-mode Y-branch for weakly guiding material system using particle swarm algorithm
2020
We designed and optimized a realistic single-mode Y-branch made of a relatively weakly guiding material system, with the aid of particle swarm algorithm combined with a 2D finite-difference time-domain solver. Design fabricability within a 1 $$\upmu$$m-resolution standard lithography was enforced. The proposed design has a mean total insertion loss of 0.45 dB over wavelengths ranging from 1450 to 1580 nm with a footprint of around 40 by 10 $$\upmu$$m. Finally, we investigated the effects of the structure’s sidewalls angle on the fidelity of the simulation.
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