Bayesian optimization design method of metal-dielectric multilayer columnar optical nano antenna
A nano-antenna and optimization design technology, applied in the field of antennas, can solve the problems of long antenna design cycle time, easy to fall into local optimal solution, long calculation cycle, etc., to optimize antenna scattering efficiency, fast antenna scattering efficiency, improve design The effect of efficiency
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[0023] The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.
[0024] A Bayesian optimization design method for a metal-dielectric multilayer cylindrical optical nanoantenna, the optimization steps are as follows:
[0025] 1. According to the needs of antenna design, construct a candidate set of structural parameters.
[0026] 2. Determine the optimization objective function as the far-field directivity coefficient in is the scattered Poynting vector parallel to the propagation direction of the incident light at plus or minus infinity, and the constraint function is set at the same time.
[0027] 3. Set the initial training set and call the Comsol simulation software to obtain the corresponding optimization objective function value and constraint function value, and use the set of (x, y, z) as the training set, where x is the initial training parameter set, y is Optimizing the objective function...
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