Photonic Crystal Waveguide Velocity Calculator
Integrated nanophotonics & slow light devices: Calculate group velocity ($v_g$), group index ($n_g$), group velocity dispersion ($GVD$), and optical buffer storage delay ($\Delta t$).
Photonic Crystal Lattice Parameters
Silicon membrane period (400 - 450 nm)
Telecom C-band center
Normalized slope at Brillouin zone edge
Slow Light & Optical Delay Metrics
Group Index n_g:
--
c / v_g (slowdown factor)
Group Velocity v_g:
--
km / s
Optical Delay Δt:
--
picoseconds (ps)
Speed Ratio:
--
% of c_vacuum
Dispersion GVD:
--
ps² / mm
Nonlinear Enhancement & Photonic Band
Nonlinear Enhancement Factor (n_g / n_Si)²:
-- ×
Normalized Frequency u = a / λ:
--
Slow Light Regime:
--
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