US 2018/0121580 A1 · FULL WAVE SIMULATIONS OF PHOTONIC CRYSTALS AND METAMATERIALS USING THE BROADBAND GREEN'S FUNCTIONS

Abstract

Broadband Green's function computing technique that employs low wavenumber extraction, obtains fast frequency independent modal band solutions and achieves fast convergence of modal expansions, is used to model and design electromagnetic wave behavior of signals in artificial materials with periodic structures, including metamaterials, photonic crystals, and phononic crystals, which are used for smart microwave devices, photonic devices, and acoustic devices. The Broadband Green's function is a general response function for artificial materials and is used to model bandgaps, bandpasses, impurities, defects, displacements of scatterers, and to formulate integral equations for periodic scatters in a finite volume. Designs of metamaterials, photonic crystals, and phononic crystals enable controlling the waves through bandpasses, bandgaps, surface states, polarizations, defects, absorption, enhancement, refraction, substrates, and guidance. The Broadband Green's function technique is used in computer simulations to analyze wave behavior over a broad frequency range, which improves design optimization of smart microwave and photonic devices.

Claims19

Dependent claims

A computing device, comprising:

a memory that stores computer instructions;
a processor that executes the computer instructions to perform actions including:
receiving a map of a periodic structure of an object having a specified geometry with source locations of exciting waves, the source locations being either inside the periodic structure or outside the periodic structure;
computing Broadband Green's function for the specified geometry of the periodic structure with periodically embedded scatterers;
determining if the object meets at least one performance criteria based on the computed Broadband Green's function;
in response to the object not meeting the at least one performance criteria:
determining a modified periodic structure of the object by modifying the source locations and polarizations in the periodic structure based on the computed Broadband Green's function;
and
providing an instruction to another computing device to fabricate a new object with the modified periodic structure;
and
in response to the object meeting the at least one performance criteria, providing an indication that the object meets the at least one performance criteria.

8 more elements

Dependencies are inferred from the claim text.

Full wave simulations of photonic crystals and metamaterials using the broadband green's functions

Life of this patent

Full wave simulations of photonic crystals and metamaterials using the broadband green's functions

Life of this patent

Abstract

Claims19