Mode Calculator

Calculation Parameters

Wavelength (nm)

Prism Code

Prism Index

Substrate Index

Prism Angle (°)

Using manual prism parameters.

Auto-calculate prism index and angle from prism code

Film Index

Film Thickness (μm)

Top-Layer Index n₁

Top-Layer Thickness w₁ (μm)

Bottom-Layer Index n₂

Bottom-Layer Thickness w₂ (μm)

Polarization

TE TM

Advanced Settings

Top-Cladding Index

Ambient Index

Sample Points

Bisection Iterations

Angles are in °; Kz is in μm⁻¹. Dual-layer branches are color-coded.

Structure

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Prism

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Mode Count

Runtime

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Top-layer guided: Beta > n₂

Leaky / lower-layer branch: Beta ≤ n₂

Mode Order	Angle (ext)	Beta	Angle (int)	Phi (bot)	Phi (top)	Kz
Enter parameters, then click “Calculate Modes”