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Refractive Index Difference Formula

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Difference Refractive Index is the difference between refractive indices caused due to fringe displacements. Check FAQs

δn = \frac{q \cdot λ}{x}

δn - Difference Refractive Index?q - Fringe Displacements Number?λ - Wavelength of Light?x - Slab Thickness?

Refractive Index Difference Example

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Here is how the Refractive Index Difference equation looks like with Values.

Here is how the Refractive Index Difference equation looks like with Units.

Here is how the Refractive Index Difference equation looks like.

0.0581 = \frac{60000 \cdot 1.55}{1.6}

0.0581 = \frac{60000 \cdot 1.55μm}{1.6m}

0.0581 = \frac{60000 \cdot 1.55}{1.6}

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Refractive Index Difference Solution

Follow our step by step solution on how to calculate Refractive Index Difference?

FIRST Step Consider the formula

δn = \frac{q \cdot λ}{x}

Next Step Substitute values of Variables

∴

δn = \frac{60000 \cdot 1.55μm}{1.6m}

Next Step Convert Units

∴

δn = \frac{60000 \cdot 1.6E-6m}{1.6m}

Next Step Prepare to Evaluate

∴

δn = \frac{60000 \cdot 1.6E-6}{1.6}

Next Step Evaluate

∴

δn = 0.058125

LAST Step Rounding Answer

∴

δn = 0.0581

Refractive Index Difference Formula Elements

Variables

Difference Refractive Index

Difference Refractive Index is the difference between refractive indices caused due to fringe displacements.

Symbol: δn

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Difference Refractive Index

Fringe Displacements Number

Fringe Displacements Number also referred as fringe shift defines the number of times the fringe displacement has occurred.

Symbol: q

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Fringe Displacements Number

Wavelength of Light

Wavelength of Light refers to the distance between two consecutive peaks or troughs of an electromagnetic wave in the optical spectrum.

Symbol: λ

Measurement: LengthUnit: μm

Note: Value should be greater than 0.

Formulas to find Wavelength of Light

Slab Thickness

Slab Thickness is the measurement of how thick the slab of fiber is.

Symbol: x

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Slab Thickness

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t c = \frac{t 2 - t 1}{\ln (T ∞ - T t1) - \ln (T ∞ - T t2)}

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α sc = (\frac{4.343 \cdot 10^{5}}{l}) \cdot (\frac{V sc}{V opt})

How to Evaluate Refractive Index Difference?

Refractive Index Difference evaluator uses Difference Refractive Index = (Fringe Displacements Number*Wavelength of Light)/Slab Thickness to evaluate the Difference Refractive Index, Refractive Index Difference refers to the change in the refractive index of a medium as measured by observing shifts in the interference fringes in an interferometric setup. Difference Refractive Index is denoted by δn symbol.

How to evaluate Refractive Index Difference using this online evaluator? To use this online evaluator for Refractive Index Difference, enter Fringe Displacements Number (q), Wavelength of Light (λ) & Slab Thickness (x) and hit the calculate button.

FAQs on Refractive Index Difference

What is the formula to find Refractive Index Difference?

The formula of Refractive Index Difference is expressed as Difference Refractive Index = (Fringe Displacements Number*Wavelength of Light)/Slab Thickness. Here is an example- 0.058125 = (60000*1.55E-06)/1.6.

How to calculate Refractive Index Difference?

With Fringe Displacements Number (q), Wavelength of Light (λ) & Slab Thickness (x) we can find Refractive Index Difference using the formula - Difference Refractive Index = (Fringe Displacements Number*Wavelength of Light)/Slab Thickness.

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Refractive Index Difference Formula

Refractive Index Difference Example

Refractive Index Difference Solution

Refractive Index Difference Formula Elements

Other formulas in Transmission Measurements category

How to Evaluate Refractive Index Difference?

FAQs on Refractive Index Difference

Variable Name