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Phase Velocity in Optic Fiber Formula

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Phase velocity in optics refers to the velocity at which the phase of an electromagnetic wave propagates through a medium. Check FAQs

v ph = \frac{[c]}{η eff}

v_ph - Phase Velocity?η_eff - Effective Index of Mode?[c] - Light speed in vacuum?

Phase Velocity in Optic Fiber Example

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Here is how the Phase Velocity in Optic Fiber equation looks like with Values.

Here is how the Phase Velocity in Optic Fiber equation looks like with Units.

Here is how the Phase Velocity in Optic Fiber equation looks like.

2.3E+8 = \frac{3E+8}{1.29}

2.3E+8m/s = \frac{3E+8m/s}{1.29}

2.3E+8 = \frac{3E+8}{1.29}

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Phase Velocity in Optic Fiber Solution

Follow our step by step solution on how to calculate Phase Velocity in Optic Fiber?

FIRST Step Consider the formula

v ph = \frac{[c]}{η eff}

Next Step Substitute values of Variables

∴

v ph = \frac{[c]}{1.29}

Next Step Substitute values of Constants

∴

v ph = \frac{3E+8m/s}{1.29}

Next Step Prepare to Evaluate

∴

v ph = \frac{3E+8}{1.29}

Next Step Evaluate

∴

v ph = 232397254.263566m/s

LAST Step Rounding Answer

∴

v ph = 2.3E+8m/s

Phase Velocity in Optic Fiber Formula Elements

Variables

Constants

Phase Velocity

Phase velocity in optics refers to the velocity at which the phase of an electromagnetic wave propagates through a medium.

Symbol: v_ph

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Phase Velocity

Effective Index of Mode

Effective Index of Mode is a way to describe the propagation characteristics of a specific mode (or electromagnetic wave) within a waveguide.

Symbol: η_eff

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Effective Index of Mode

Light speed in vacuum

Light speed in vacuum is a fundamental physical constant representing the speed at which light propagates through a vacuum.

Symbol: [c]

Value: 299792458.0 m/s

Other formulas in Fiber Design Characteristics category

Go Numerical Aperture

NA = \sqrt{({η core}^{2}) - ({η clad}^{2})}

Go Refractive Index of Fiber Core

η core = \sqrt{{NA}^{2} + {η clad}^{2}}

Go Refractive Index of Cladding

η clad = \sqrt{{η core}^{2} - {NA}^{2}}

Go Ray Optics Critical Angle

θ = {\sin (\frac{η r}{η i})}^{- 1}

How to Evaluate Phase Velocity in Optic Fiber?

Phase Velocity in Optic Fiber evaluator uses Phase Velocity = [c]/Effective Index of Mode to evaluate the Phase Velocity, Phase Velocity in Optic Fiber of an optic wave is the speed at which a specific phase of the wave travels through a medium. In simple terms, it tells you how fast the "crests" or "troughs" of the wave move. Phase Velocity is denoted by v_ph symbol.

How to evaluate Phase Velocity in Optic Fiber using this online evaluator? To use this online evaluator for Phase Velocity in Optic Fiber, enter Effective Index of Mode (η_eff) and hit the calculate button.

FAQs on Phase Velocity in Optic Fiber

What is the formula to find Phase Velocity in Optic Fiber?

The formula of Phase Velocity in Optic Fiber is expressed as Phase Velocity = [c]/Effective Index of Mode. Here is an example- 2.3E+8 = [c]/1.29.

How to calculate Phase Velocity in Optic Fiber?

With Effective Index of Mode (η_eff) we can find Phase Velocity in Optic Fiber using the formula - Phase Velocity = [c]/Effective Index of Mode. This formula also uses Light speed in vacuum constant(s).

Can the Phase Velocity in Optic Fiber be negative?

No, the Phase Velocity in Optic Fiber, measured in Speed cannot be negative.

Which unit is used to measure Phase Velocity in Optic Fiber?

Phase Velocity in Optic Fiber is usually measured using the Meter per Second[m/s] for Speed. Meter per Minute[m/s], Meter per Hour[m/s], Kilometer per Hour[m/s] are the few other units in which Phase Velocity in Optic Fiber can be measured.

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