Optics Engineering

Interferometric Fringe Contrast Degradation Due to Coherence Length Mismatch Calculator

Interferometric Fringe Contrast Degradation Due to Coherence Length Mismatch engineering calculator.

Quick Answer

Calculate Interferometric Fringe Contrast Degradation Due to Coherence Length Mismatch

Calculator

Fringe Visibility Loss (dimensionless)
—

Result Interpretation

Interferometric Fringe Contrast Degradation Due to Coherence Length Mismatch Calculator computes Fringe Visibility Loss in dimensionless using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Central Coherence Length = 1.0E-6
  • Optical Path Difference = 1.0E-6
  • Coherence Length Standard Deviation = 2.0E-7

Expected Result:

  • Fringe Visibility Loss = 0

Engineering Interpretation:

Under the given input conditions, the calculated result is: Fringe Visibility Loss = 0 dimensionless.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

fringe visibility loss = sqrt(1 - pow(exp(-0.5 * pow((optical path difference - central coherence length) / (sqrt(2) * coherence length standard deviation), 2)), 2))

Formula family: formula_optics_interferometric_fringe_contrast_vs_coherence_length_mismatch_diagnostic

Variables

SymbolLabelRoleDescription
OPD Optical Path Difference INPUT Optical Path Difference
Lc Central Coherence Length INPUT Central Coherence Length
sigma_Lc Coherence Length Standard Deviation INPUT Coherence Length Standard Deviation
fringe_visibility_loss Fringe Visibility Loss OUTPUT Fringe Visibility Loss
sqrt_2 sqrt_2 CONSTANT sqrt_2 = 1.4142135623731 dimensionless

Calculation Steps

  1. Enter the optical path difference in m.
  2. Enter the central coherence length in m.
  3. Enter the coherence length standard deviation in m.
  4. Step 1: Compute fringe visibility loss.
  5. Read the fringe visibility loss (dimensionless) from the results.

Engineering Summary

Calculate Interferometric Fringe Contrast Degradation Due to Coherence Length Mismatch

Frequently Asked Questions

What does this calculator calculate?

The Interferometric Fringe Contrast Degradation Due to Coherence Length Mismatch Calculator estimates Fringe Visibility Loss based on the input parameters you provide

Why is optical path difference important in this calculation?

optical path difference is directly proportional to fringe visibility loss. When you enter optical path difference in m, the calculator uses it in the engineering formula to compute the output

How should I interpret the result fringe visibility loss?

The calculator outputs fringe visibility loss in dimensionless. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Optical Path Difference (m), Central Coherence Length (m), Coherence Length Standard Deviation (m). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

Related Tools

Browse More Tools

Explore the full index of engineering calculators on this vertical site.