Noise Equivalent Power Calculator

↳

Electronics

Chemical Engineering

Civil

Electrical

Electronics and Instrumentation

Materials Science

Mechanical

Production Engineering

⤿

C-V Actions of Optics Transmission

Fiber Optic Parameters

Optical Detectors

Transmission Measurements

✖Charge Of Particles can have several values depending on the type of particle we are dealing with.ⓘ Charge Of Particles [e]			+10% -10%
✖Dark current is the electric current that flows through a photosensitive device, such as a photodetector, even when there is no incident light or photons striking the device.ⓘ Dark Current [I_d]			+10% -10%
✖Quantum Efficiency represents the probability that a photon incident on the photodetector will generate an electron-hole pair, leading to a photocurrent.ⓘ Quantum Efficiency [η]			+10% -10%
✖Wavelength of Light refers to the distance between two consecutive peaks or troughs of an electromagnetic wave in the optical spectrum.ⓘ Wavelength of Light [λ]			+10% -10%

✖Noise Equivalent Power measures the minimum detectable power or intensity of radiation, taking into account the inherent noise in the detector system.ⓘ Noise Equivalent Power [NEP]

⎘ Copy

👎

Formula

✖

Noise Equivalent Power

Formula

`"NEP" = "[hP]"*"[c]"*sqrt(2*"e"*"I"_{"d"})/("η"*"e"*"λ")`

Example

`"1.7E^-23W"="[hP]"*"[c]"*sqrt(2*"14.02C"*"11nA")/("0.3"*"14.02C"*"1.55μm")`

Calculator

LaTeX

Reset

👍

Download Electronics Formula PDF PDF Image

Noise Equivalent Power Solution

STEP 0: Pre-Calculation Summary

Formula Used

Noise Equivalent Power = [hP]*[c]*sqrt(2*Charge Of Particles*Dark Current)/(Quantum Efficiency*Charge Of Particles*Wavelength of Light)
NEP = [hP]*[c]*sqrt(2*e*I_d)/(η*e*λ)
This formula uses 2 Constants, 1 Functions, 5 Variables

Constants Used

[hP] - Planck constant Value Taken As 6.626070040E-34
[c] - Light speed in vacuum Value Taken As 299792458.0

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Noise Equivalent Power - (Measured in Watt) - Noise Equivalent Power measures the minimum detectable power or intensity of radiation, taking into account the inherent noise in the detector system.
Charge Of Particles - (Measured in Coulomb) - Charge Of Particles can have several values depending on the type of particle we are dealing with.
Dark Current - (Measured in Ampere) - Dark current is the electric current that flows through a photosensitive device, such as a photodetector, even when there is no incident light or photons striking the device.
Quantum Efficiency - Quantum Efficiency represents the probability that a photon incident on the photodetector will generate an electron-hole pair, leading to a photocurrent.
Wavelength of Light - (Measured in Meter) - Wavelength of Light refers to the distance between two consecutive peaks or troughs of an electromagnetic wave in the optical spectrum.

STEP 1: Convert Input(s) to Base Unit

Charge Of Particles: 14.02 Coulomb --> 14.02 Coulomb No Conversion Required
Dark Current: 11 Nanoampere --> 1.1E-08 Ampere (Check conversion here)
Quantum Efficiency: 0.3 --> No Conversion Required
Wavelength of Light: 1.55 Micrometer --> 1.55E-06 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

NEP = [hP]*[c]*sqrt(2*e*I_d)/(η*e*λ) --> [hP]*[c]*sqrt(2*14.02*1.1E-08)/(0.3*14.02*1.55E-06)

Evaluating ... ...

NEP = 1.69223668588226E-23

STEP 3: Convert Result to Output's Unit

1.69223668588226E-23 Watt --> No Conversion Required

FINAL ANSWER

1.69223668588226E-23 ≈ 1.7E-23 Watt <-- Noise Equivalent Power

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electronics » Fiber Optic Transmission » C-V Actions of Optics Transmission » Noise Equivalent Power

Credits

Created by Santhosh Yadav

Dayananda Sagar College Of Engineering (DSCE), Banglore

Santhosh Yadav has created this Calculator and 50+ more calculators!

Verified by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has verified this Calculator and 600+ more calculators!

< 17 C-V Actions of Optics Transmission Calculators

Noise Equivalent Power

Go Noise Equivalent Power = [hP]*[c]*sqrt(2*Charge Of Particles*Dark Current)/(Quantum Efficiency*Charge Of Particles*Wavelength of Light)

Passband Ripple

Go Passband Ripple = ((1+sqrt(Resistance 1*Resistance 2)*Single Pass Gain)/(1-sqrt(Resistance 1*Resistance 2)*Single Pass Gain))^2

ASE Noise Power

Go ASE Noise Power = Mode Number*Spontaneous Emission Factor*(Single Pass Gain-1)*([hP]*Frequency Of Incident Light)*Post Detection Bandwidth

Noise Figure given ASE Noise Power

Go Noise Figure = 10*log10(ASE Noise Power/(Single Pass Gain*[hP]*Frequency Of Incident Light*Post Detection Bandwidth))

Output Photo Current

Go Photocurrent = Quantum Efficiency*Incident Optical Power*[Charge-e]/([hP]*Frequency Of Incident Light)

Peak Parametric Gain

Go Peak Parametric Gain = 10*log10(0.25*exp(2*Fiber Non Linear Coefficient*Pump Signal Power*Fiber Length))

Responsivity with reference of Wavelength

Go Responsivity of Photodetector = (Quantum Efficiency*[Charge-e]*Wavelength of Light)/([hP]*[c])

Total Shot Noise

Go Total Shot Noise = sqrt(2*[Charge-e]*Post Detection Bandwidth*(Photocurrent+Dark Current))

Responsivity in relation to Photon Energy

Go Responsivity of Photodetector = (Quantum Efficiency*[Charge-e])/([hP]*Frequency Of Incident Light)

Thermal Noise Current

Go Thermal Noise Current = 4*[BoltZ]*Absolute Temperature*Post Detection Bandwidth/Resistivity

Gain Coefficient

Go Net Gain Coefficient Per Unit Length = Optical Confinement Factor*Material Gain Coefficient-Effective Loss Coefficient

Junction Capacitance of Photodiode

Go Junction Capacitance = Permittivity of Semiconductor*Junction Area/Depletion Layer Width

Dark Current Noise

Go Dark Current Noise = 2*Post Detection Bandwidth*[Charge-e]*Dark Current

Load Resistor

Go Load Resistance = 1/(2*pi*Post Detection Bandwidth*Capacitance)

Optical Gain of Phototransistor

Go Optical Gain of Phototransistor = Quantum Efficiency*Common Emitter Current Gain

PhotoConductive Gain

Go PhotoConductive Gain = Slow Carrier Transit Time/Fast Carrier Transit Time

Responsivity of Photodetector

Go Responsivity of Photodetector = Photocurrent/Incident Power

Noise Equivalent Power Formula

Noise Equivalent Power = [hP]*[c]*sqrt(2*Charge Of Particles*Dark Current)/(Quantum Efficiency*Charge Of Particles*Wavelength of Light)
NEP = [hP]*[c]*sqrt(2*e*I_d)/(η*e*λ)

How Noise Equivalent Power is helpful?

Noise Equivalent Power (NEP) is crucial in photodetection as it determines the minimum optical power a photodetector can reliably detect while maintaining an acceptable signal-to-noise ratio. NEP is essential for selecting the right photodetector, comparing its performance to other detectors, and ensuring accurate signal detection in various applications.

How to Calculate Noise Equivalent Power?

Noise Equivalent Power calculator uses Noise Equivalent Power = [hP]*[c]*sqrt(2*Charge Of Particles*Dark Current)/(Quantum Efficiency*Charge Of Particles*Wavelength of Light) to calculate the Noise Equivalent Power, Noise Equivalent Power (NEP) is a measure of the minimum detectable optical power or intensity for a photodetector or photodetector system. It quantifies the sensitivity of the detector by expressing the level of incident optical power required to produce a signal-to-noise ratio of 1. Noise Equivalent Power is denoted by NEP symbol.

How to calculate Noise Equivalent Power using this online calculator? To use this online calculator for Noise Equivalent Power, enter Charge Of Particles (e), Dark Current (I_d), Quantum Efficiency (η) & Wavelength of Light (λ) and hit the calculate button. Here is how the Noise Equivalent Power calculation can be explained with given input values -> 1.7E-23 = [hP]*[c]*sqrt(2*14.02*1.1E-08)/(0.3*14.02*1.55E-06).

FAQ

What is Noise Equivalent Power?

Noise Equivalent Power (NEP) is a measure of the minimum detectable optical power or intensity for a photodetector or photodetector system. It quantifies the sensitivity of the detector by expressing the level of incident optical power required to produce a signal-to-noise ratio of 1 and is represented as NEP = [hP]*[c]*sqrt(2*e*I_d)/(η*e*λ) or Noise Equivalent Power = [hP]*[c]*sqrt(2*Charge Of Particles*Dark Current)/(Quantum Efficiency*Charge Of Particles*Wavelength of Light). Charge Of Particles can have several values depending on the type of particle we are dealing with, Dark current is the electric current that flows through a photosensitive device, such as a photodetector, even when there is no incident light or photons striking the device, Quantum Efficiency represents the probability that a photon incident on the photodetector will generate an electron-hole pair, leading to a photocurrent & Wavelength of Light refers to the distance between two consecutive peaks or troughs of an electromagnetic wave in the optical spectrum.

How to calculate Noise Equivalent Power?

Noise Equivalent Power (NEP) is a measure of the minimum detectable optical power or intensity for a photodetector or photodetector system. It quantifies the sensitivity of the detector by expressing the level of incident optical power required to produce a signal-to-noise ratio of 1 is calculated using Noise Equivalent Power = [hP]*[c]*sqrt(2*Charge Of Particles*Dark Current)/(Quantum Efficiency*Charge Of Particles*Wavelength of Light). To calculate Noise Equivalent Power, you need Charge Of Particles (e), Dark Current (I_d), Quantum Efficiency (η) & Wavelength of Light (λ). With our tool, you need to enter the respective value for Charge Of Particles, Dark Current, Quantum Efficiency & Wavelength of Light and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search