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Application Gallery

Navigation: NanoPhotonics

Photonic Crystal and Diffractive Optics

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For nanophotonic structures that are comprised of periodic elements of different permittivity in one dimension (gratings) or two/three dimensions (photonic crystals), the periodic variation in the refractive index inhibits the propagation of electromagnetic waves of specific frequency, resulting in photonic band gaps corresponding to the band of frequencies over which radiation cannot propagate.

 

Bloch modes are the name given to optical modes which can propagate through the photonic crystal lattice. The corresponding photonic bandstructure for a particular photonic crystal structure illustrate photonic band gaps where Bloch modes do not exist, and where such Bloch modes can propagate.

 

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Features

FDTD Solutions is a high performance optical solver that can capture the effects of wavelength-scale photonic crystal patterning

and solve scientific issues related to the design, analysis and optimization of photonic crystal cavities, devices and components.

Optimize a wide variety of grating designs

Calculation of photonic crystal bandstructure and band gaps, waveguide Bloch mode profiles and photonic crystal cavity modes and quality factors for those modes in 2D and 3D

Propagation in photonic crystal waveguides without and with imperfections, including calculation of effective index, propagation constant, propagation loss, dispersion, bending loss, group velocity, group dispersion of photonic crystal waveguide components

Propagation in and performance of photonic crystal based devices including switches, splitters, bends, resonators, filters, cavities, and input/output couplers

Effect of photonic crystal patterning on the performance of devices including photonic crystal light emitting diodes (OLEDs), VCSELs, and photonic crystal enhanced solar cells

Lumerical’s conformal mesh technology can provide sub-mesh cell modeling accuracy important in photonic crystal modeling

Multi-Coefficient Materials (MCMs) can accurately model dispersive materials across wide wavelength ranges

Built-in parameter sweep and optimization algorithms make it easy to analyze and optimize parameterized designs

 

MODE Solutions can be used to analyze photonic crystal fiber and planar photonic crystal components.

For photonic crystal fiber and other microstructured optical fibers:

Photonic crystal fiber (PCF) mode profiles, effective index, propagation constant, propagation loss, dispersion, bending loss, group velocity, group dispersion

Sensitivity of PCFs to size and other environmental factors that result in changes in the refractive index profile

Photonic crystal fiber macrobending loss

Far field radiation profiles of photonic crystal fiber modes and modes of other microstructured optical fibers

Coupling efficiency between photonic crystal fiber modes and other waveguide modes

 

For planar photonic crystals:

Fast calculation of bandstructure, band gaps, waveguide Bloch mode profiles and photonic crystal cavity modes and quality factors using the 2.5D variational FDTD solver.

Propagation in photonic crystal line defect waveguides, including calculation of propagation constant, loss and other propagation characteristics

Propagation in and performance of photonic crystal based devices

Calculation of relevant input/output quantities, including far field radiation profiles, overlap quantities, and coupling efficiencies between different waveguide modes

Lumerical’s conformal mesh technology can provide sub-mesh cell modeling accuracy important in photonic crystal modeling

Multi-Coefficient Materials (MCMs) can accurately model dispersive materials across wide wavelength ranges

Built-in parameter sweep and optimization algorithms make it easy to analyze and optimize parameterized designs

Application examples

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