Lumerical 2015b Release: New Graphene Modeling Workflow
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Lumerical 2015b Release New Graphene Modeling Workflow MAY 2015 PROPRIETARY AND CONFIDENTIAL © LUMERICAL SOLUTIONS INC 1
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Transcript of Lumerical 2015b Release: New Graphene Modeling Workflow
Lumerical 2015b Release New Graphene Modeling Workflow
MAY 2015
PROPRIETARY AND CONFIDENTIAL© LUMERICAL SOLUTIONS INC
1
© LUMERICAL SOLUTIONS INC2
New Graphene Material ModelGraphene is now modeled using a surface conductivity
Treating graphene as a 2-D material leads to faster simulations
Two new components were added to the GUI in FDTD and MODE:
• New surface conductivity model was added to the material database
• Surface object was added to the list of geometric primitives
𝜎 𝜔, Γ, 𝜇𝑐 , 𝑇
© LUMERICAL SOLUTIONS INC3
New Surface Conductivity Model2015B ReleaseFDTD & MODE
new model
model parameters
© LUMERICAL SOLUTIONS INC4
New Surface PrimitiveFDTD 2015b Release
• The new 2D rectangle was specifically created for modeling graphene
© LUMERICAL SOLUTIONS INC5
Tunable THz Metamaterial
Transmitted Power Without Substrate Transmitted Power With Substrate
• The shown results were obtained using the FDTD solver
© LUMERICAL SOLUTIONS INC6
Electro-Optical Modulator
600 nm
graphene sheet
SiO2 (n = 1.44)
Si (n = 3.47)
Al2O3 (n = 1.746)
250 nm
7 nm
Based on the following waveguide configuration:
λ = 1.55 μm
Desired Mode
• The shown waveguide mode was obtained using the FDE solver.
© LUMERICAL SOLUTIONS INC7
Summary
Improved graphene workflow available in FDTD and MODE (2015b)
Graphene is now treated as a 2-D material
• A new surface conductivity model is being introduced. • A new geometric primitive specifically for graphene.
Treating graphene as a 2-D material leads to faster simulations
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PROPRIETARY AND CONFIDENTIAL© LUMERICAL SOLUTIONS INC
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