Optics and Photonics Simulators

Airy Disk Simulator — Diffraction Limit and Rayleigh Resolution

Wave Optics & Interference

Simulate Airy disk diffraction patterns and Rayleigh resolution limits for telescopes and microscopes. Calculate diffraction angle, focal-plane radius, and energy fraction in real time.

Beer-Lambert Law Simulator — Absorbance, Transmittance & Concentration

Applied Optics & Photometry

Interactively visualize the Beer-Lambert law (A=εlc). A spectroscopic analysis simulator for learning absorbance, transmittance, calibration curves, and deviation factors.

Chromatic Aberration Simulator — Axial CA & Abbe Number

Geometrical Optics & Lenses

Visualize the axial chromatic aberration of a singlet lens with the lensmaker's equation and Abbe number.

Additive Color Mixing Simulator — RGB Light Superposition

Applied Optics & Photometry

Additive & subtractive color mixing simulator (RGB/CMY). Mix light with RGB and pigment with CMY in real time, with Venn diagrams, HSL conversion and ΔE calculation.

Daylight Factor Simulator

Applied Optics & Photometry

Free daylight factor calculator: vary window area, floor area, glass transmittance, visible-sky angle and surface reflectance to find a room's average daylight factor and estimated indoor illuminance using the BRE/CIBSE formula.

Depth of Field Simulator

Geometrical Optics & Lenses

Depth of Field Simulator: Calculate the "depth that looks in focus" in a photograph. Adjust the focal length, f-number, subject distance and sensor format to…

Diffraction Grating Simulator — Grating Equation, Angular Dispersion & White Light Rainbow

Wave Optics & Interference

Explore diffraction with our interactive simulator. Adjust grating parameters, wavelength, and angle to compute diffraction patterns, dispersion, and resolving power in real-time.

Diffraction & Young's Double-Slit Calculator

Wave Optics & Interference

Set wavelength, slit separation, slit width, and screen distance to visualize interference intensity I(θ) in real time.

EDFA Erbium-Doped Fiber Amplifier Noise Figure Simulator

Lasers & Fiber Optics

EDFA Erbium-Doped Fiber Amplifier Noise Figure Simulator: Design tool for the erbium-doped fiber amplifier (EDFA) that drives submarine cables and long-haul …

Fabry-Perot Interferometer Simulator — Finesse and Transmission

Wave Optics & Interference

Interactive Fabry-Perot simulator: compute free spectral range, finesse, FWHM, and Q from mirror spacing and reflectivity, with a real-time Airy transmission spectrum.

Optical Fiber Numerical Aperture Simulator

Lasers & Fiber Optics

Calculate the numerical aperture (NA) that tells you how much light an optical fiber can gather.

Fiber Optics Calculator

Lasers & Fiber Optics

Calculate fiber optic parameters: attenuation, pulse broadening, bandwidth, NA, V-number, and mode classification. for engineers.

Fresnel Diffraction Pattern Calculator — Near-Field Optics Simulator

Wave Optics & Interference

Calculate Fresnel diffraction patterns for slits, apertures, and edges. Visualize the Cornu spiral and compute near-field intensity with this tool.

Fresnel Equations Simulator — Polarization-Dependent Reflectance & Brewster Angle

Wave Optics & Interference

Fresnel Equations Simulator: compute polarization-dependent reflectance, Brewster angle, and s/p polarization from refractive indices and incidence angle.

Gaussian Beam Simulator — Laser Beam Propagation

Lasers & Fiber Optics

Gaussian beam propagation simulator: real-time beam radius, Rayleigh range, divergence half-angle, and beam diameter at 1 m from wavelength, waist, distance, and M-squared.

Holographic Interference Pattern Simulator — Coherent Light Fringe Visualization

Wave Optics & Interference

Explore hologram creation with a real-time simulator. Adjust laser sources and wavelength to see how interference patterns form.

Laser Cavity Design Calculator | Threshold Current, Slope Efficiency, Q-Factor

Lasers & Fiber Optics

Laser cavity design calculator. Compute threshold current, slope efficiency, mode spacing, Q-factor and photon lifetime in real time, with L-I and mode spectrum.

Laser Optics & Gaussian Beam Design Calculator

Lasers & Fiber Optics

Calculate Gaussian beam parameters instantly. Enter beam waist, wavelength, and M² factor to get Rayleigh length, divergence, and beam profile.

Lens Magnification Simulator — Ray Tracing & Image Formation

Geometrical Optics & Lenses

Lens Magnification & Ray Tracing Simulator: Change focal length and object distance to calculate image position, magnification, and real/virtual nature in re…

Lensmaker Equation Simulator — Thin Lens Imaging

Geometrical Optics & Lenses

Lensmaker equation simulator for thin lens imaging: compute focal length, image distance, and magnification from refractive index and surface radii.

Convex & Concave Lens Ray Tracing Simulator

Geometrical Optics & Lenses

Explore lens optics with our interactive simulator. Adjust focal length, object distance, and height to see real-time ray tracing and image formation.

Thin Lens Ray Tracer & Optics Simulator — Focal Length, Image Position, Magnification

Geometrical Optics & Lenses

Interactive optics simulator. Drag sliders to trace rays in real time, calculate image distance, magnification, and determine if the image is real or virtual.

LiDAR Time-of-Flight Distance Resolution Simulator

Lasers & Fiber Optics

A design tool for Time-of-Flight (TOF) LiDAR sensors used in autonomous vehicles, surveying and robotics.

Malus Law Simulator — Three-Polarizer Paradox

Wave Optics & Interference

Malus law simulator: real-time three-polarizer paradox intensity through P1, P2, P3 with I=I0 cos squared theta and extinction leakage, plus contribution of the middle plate.

Michelson Interferometer Simulator — Path Difference and Fringes

Wave Optics & Interference

A Michelson interferometer simulator. Adjust path difference, wavelength and mirror travel to see detected intensity, phase and fringe order in real time.

Modulation Transfer Function (MTF) Simulator

Geometrical Optics & Lenses

Modulation Transfer Function (MTF) Simulator: Calculate how faithfully a lens transmits the contrast of a scene. Adjust the spatial frequency, aperture, wave…

Monte Carlo Radiative Transfer (MCRT) Simulator

Applied Optics & Photometry

Monte Carlo Radiative Transfer (MCRT) Simulator: Track individual photons random-walking through an absorbing and scattering slab and read the diffuse reflec…

Optical Coherence Tomography (OCT) Resolution Simulator

Lasers & Fiber Optics

Optical Coherence Tomography (OCT) Resolution Simulator: Compute the axial resolution Δz and lateral resolution Δx of an OCT system in real time from center …

Optical Fiber Communication Simulator — NA, Attenuation, Dispersion

Lasers & Fiber Optics

Explore optical fiber physics with an interactive simulator. Adjust refractive indices, visualize total internal reflection, and calculate key parameters like NA and attenuation.

Optical Fiber Link Design Calculator

Lasers & Fiber Optics

Calculate optical link loss, power margin, and dispersion penalty. Supports SMF/MMF fibers and key wavelengths for accurate network design.

Optical Fiber Transmission

Lasers & Fiber Optics

Calculate received optical power, link margin, bandwidth, and maximum reach from fiber attenuation, length, transmit power, splices, connectors, and dispersion.

Optical Microscopy Resolution & Depth of Field Calculator

Geometrical Optics & Lenses

Optical microscopy resolution & depth-of-field calculator. Compute Rayleigh resolution, Abbe limit and DOF from NA, wavelength and magnification in real time.

Optical Resonator Design Tool — FSR, Finesse, Q-factor Calculator

Lasers & Fiber Optics

Design and analyze optical resonators in real time. Tune cavity parameters and instantly compute FSR, finesse, Q-factor, and photon lifetime with interactive charts.

Photodetector & Optical Sensor Calculator | Responsivity, NEP, D*, SNR

Applied Optics & Photometry

Calculate photodetector responsivity, NEP, D*, SNR, and noise in real time. Visualize noise contributions and optimize sensor performance with our free optical calculator.

Thin Lens Calculator — Ray Diagram, Focal Length & Image Formation

Geometrical Optics & Lenses

Interactive thin lens calculator. Adjust parameters to visualize ray diagrams, calculate image distance & magnification, and determine real/virtual image classification instantly.

Photodetector Design Calculator — SNR, NEP, Detectivity D*

Applied Optics & Photometry

Calculate photodetector performance for Si, InGaAs, APD, and PMT. Compute responsivity, SNR, NEP, D* and noise using key physics formulas.

Polarization Optics & Jones Vector Calculator

Wave Optics & Interference

Interactive tool to calculate polarization states. Input light and cascade optical elements to output Jones vectors, Stokes parameters, and Poincaré sphere visualization.

Prism Refraction Simulator

Geometrical Optics & Lenses

Simulate prism refraction and light dispersion using Snell's law on canvas.

Single-Slit Diffraction Simulator — Intensity Pattern & Minima Positions

Wave Optics & Interference

Visualize Fraunhofer single-slit diffraction in real time. Vary slit width a and wavelength λ to see I(θ), dark-fringe positions and a true-color rendering.

Snell's Law Simulator — Refraction & Total Internal Reflection

Geometrical Optics & Lenses

Adjust refractive indices and incident angle to see real-time ray diagrams.

Spherical Aberration Simulator — Paraxial vs Marginal Focus

Geometrical Optics & Lenses

Visualize third-order spherical aberration in a plano-convex lens. Adjust radius, index and ray height to compute the axial focus shift via the Seidel formula.

Stage LED Lighting Lumens & Efficacy Simulator

Applied Optics & Photometry

Stage LED Lighting Lumens & Efficacy Simulator: Pick a stage LED fixture — PAR, moving head, ellipsoidal, Fresnel or LED bar — and adjust power, beam angle, …

Thin Film Optics & Anti-Reflection Coating Simulator

Wave Optics & Interference

Simulate multi-layer thin film reflectance and anti-reflection coatings in real time. Adjust parameters and see the resulting color and optical performance.

Total Internal Reflection Simulator — Critical Angle and Evanescent Wave

Geometrical Optics & Lenses

When light goes from a high-index medium to a low-index medium and exceeds the critical angle, it totally reflects and an evanescent wave leaks across the interface. Var…

Young's Double-Slit Interference Simulator

Wave Optics & Interference

Visualize interference fringes in real time by adjusting wavelength, slit separation, and screen distance. Interactively explore Young's double-slit experiment for high school and university wave optics.