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Laser characterization
T₀ Extraction Calculator
Fit the characteristic temperature T₀ and pre-exponential I₀ from threshold current vs. temperature data.
Interactive
Tools
Interactive calculators for common photonics math. Every tool runs entirely in your browser. Nothing you enter is uploaded or stored.
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Laser characterization
Wall-Plug Efficiency Calculator
Compute wall-plug efficiency from LIV data point-by-point and identify the peak operating current.
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Optical alignment
Fiber Coupling Efficiency Calculator
Estimate Gaussian beam to single-mode fiber coupling efficiency from beam waist, fiber MFD, and alignment offsets.
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PIC design
Bragg Wavelength Calculator
Convert between grating period and Bragg wavelength for DFB/DBR lasers and integrated photonic Bragg gratings.
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Optical coatings
AR Coating Thickness Calculator
Quarter-wave anti-reflection design: film thickness, ideal index, and residual reflectance with a live spectrum plot.
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Laser characterization
Junction Temperature Calculator
Extract junction temperature rise and thermal resistance from a DFB wavelength shift, or predict junction temperature from known R_th.
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PIC characterization
Q Factor to Propagation Loss Converter
Convert intrinsic Q to waveguide propagation loss for ring resonators, with platform presets for SOI, SiN, InP, and LNOI.