ASE Noise Power Calculator

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C-V Actions of Optics Transmission

Fiber Optic Parameters

Optical Detectors

Transmission Measurements

✖Mode Number in an optical fiber refers to the number of paths in which light can propagate.ⓘ Mode Number [m]			+10% -10%
✖Spontaneous Emission Factor is defined as the ratio of the rate of spontaneous emission coupled into the laser modes to the total spontaneous emission rate.ⓘ Spontaneous Emission Factor [n_sp]			+10% -10%
✖Single Pass Gain refers to the fractional increase in energy as light makes a single pass through a medium.ⓘ Single Pass Gain [G_s]			+10% -10%
✖Frequency of incident light is a measure of how many cycles (oscillations) of the electromagnetic wave occur per second.ⓘ Frequency Of Incident Light [f]			+10% -10%
✖Post Detection Bandwidth refers to the bandwidth of the electrical signal after it has been detected and converted from an optical signal.ⓘ Post Detection Bandwidth [B]			+10% -10%

✖ASE Noise Power refers to the noise effect in an optical amplifier, which arises from a quantum effect known as spontaneous emission.ⓘ ASE Noise Power [P_ASE]

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Formula

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ASE Noise Power

Formula

`"P"_{"ASE"} = "m"*"n"_{"sp"}*("G"_{"s"}-1)*("[hP]"*"f")*"B"`

Example

`"0.000434fW"="4.1"*"1000"*("1000.01"-1)*("[hP]"*"20Hz")*"8e6Hz"`

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ASE Noise Power Solution

STEP 0: Pre-Calculation Summary

Formula Used

ASE Noise Power = Mode Number*Spontaneous Emission Factor*(Single Pass Gain-1)*([hP]*Frequency Of Incident Light)*Post Detection Bandwidth
P_ASE = m*n_sp*(G_s-1)*([hP]*f)*B
This formula uses 1 Constants, 6 Variables

Constants Used

[hP] - Planck constant Value Taken As 6.626070040E-34

Variables Used

ASE Noise Power - (Measured in Watt) - ASE Noise Power refers to the noise effect in an optical amplifier, which arises from a quantum effect known as spontaneous emission.
Mode Number - Mode Number in an optical fiber refers to the number of paths in which light can propagate.
Spontaneous Emission Factor - Spontaneous Emission Factor is defined as the ratio of the rate of spontaneous emission coupled into the laser modes to the total spontaneous emission rate.
Single Pass Gain - Single Pass Gain refers to the fractional increase in energy as light makes a single pass through a medium.
Frequency Of Incident Light - (Measured in Hertz) - Frequency of incident light is a measure of how many cycles (oscillations) of the electromagnetic wave occur per second.
Post Detection Bandwidth - (Measured in Hertz) - Post Detection Bandwidth refers to the bandwidth of the electrical signal after it has been detected and converted from an optical signal.

STEP 1: Convert Input(s) to Base Unit

Mode Number: 4.1 --> No Conversion Required
Spontaneous Emission Factor: 1000 --> No Conversion Required
Single Pass Gain: 1000.01 --> No Conversion Required
Frequency Of Incident Light: 20 Hertz --> 20 Hertz No Conversion Required
Post Detection Bandwidth: 8000000 Hertz --> 8000000 Hertz No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_ASE = m*n_sp*(G_s-1)*([hP]*f)*B --> 4.1*1000*(1000.01-1)*([hP]*20)*8000000

Evaluating ... ...

P_ASE = 4.34239871131322E-19

STEP 3: Convert Result to Output's Unit

4.34239871131322E-19 Watt -->0.000434239871131322 Femtowatt (Check conversion here)

FINAL ANSWER

0.000434239871131322 ≈ 0.000434 Femtowatt <-- ASE Noise Power

(Calculation completed in 00.004 seconds)

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

Credits

Created by Vaidehi Singh

Prabhat Engineering College (P.E.C.), Uttar Pradesh

Vaidehi Singh has created this Calculator and 25+ more calculators!

Verified by Santhosh Yadav

Dayananda Sagar College Of Engineering (DSCE), Banglore

Santhosh Yadav has verified this Calculator and 50+ 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

ASE Noise Power Formula

ASE Noise Power = Mode Number*Spontaneous Emission Factor*(Single Pass Gain-1)*([hP]*Frequency Of Incident Light)*Post Detection Bandwidth
P_ASE = m*n_sp*(G_s-1)*([hP]*f)*B

What is the effect of ASE Noise Power?

ASE tends to limit the gain achievable in a single stage of a fiber amplifier to the order of 40–50 dB. Even if ASE in an amplifier is not strong enough to extract significant power, it can contribute significantly to the noise of the amplified signal. ASE noise may limit the effective amplification due to saturation effect and affects the receiver’s bit error ratio (BER).

How to Calculate ASE Noise Power?

ASE Noise Power calculator uses ASE Noise Power = Mode Number*Spontaneous Emission Factor*(Single Pass Gain-1)*([hP]*Frequency Of Incident Light)*Post Detection Bandwidth to calculate the ASE Noise Power, ASE Noise Power refers to the noise effect in an optical amplifier, which arises from a quantum effect known as spontaneous emission. ASE is usually an unwanted effect. ASE Noise Power is denoted by P_ASE symbol.

How to calculate ASE Noise Power using this online calculator? To use this online calculator for ASE Noise Power, enter Mode Number (m), Spontaneous Emission Factor (n_sp), Single Pass Gain (G_s), Frequency Of Incident Light (f) & Post Detection Bandwidth (B) and hit the calculate button. Here is how the ASE Noise Power calculation can be explained with given input values -> 4.3E+11 = 4.1*1000*(1000.01-1)*([hP]*20)*8000000.

FAQ

What is ASE Noise Power?

ASE Noise Power refers to the noise effect in an optical amplifier, which arises from a quantum effect known as spontaneous emission. ASE is usually an unwanted effect and is represented as P_ASE = m*n_sp*(G_s-1)*([hP]*f)*B or ASE Noise Power = Mode Number*Spontaneous Emission Factor*(Single Pass Gain-1)*([hP]*Frequency Of Incident Light)*Post Detection Bandwidth. Mode Number in an optical fiber refers to the number of paths in which light can propagate, Spontaneous Emission Factor is defined as the ratio of the rate of spontaneous emission coupled into the laser modes to the total spontaneous emission rate, Single Pass Gain refers to the fractional increase in energy as light makes a single pass through a medium, Frequency of incident light is a measure of how many cycles (oscillations) of the electromagnetic wave occur per second & Post Detection Bandwidth refers to the bandwidth of the electrical signal after it has been detected and converted from an optical signal.

How to calculate ASE Noise Power?

ASE Noise Power refers to the noise effect in an optical amplifier, which arises from a quantum effect known as spontaneous emission. ASE is usually an unwanted effect is calculated using ASE Noise Power = Mode Number*Spontaneous Emission Factor*(Single Pass Gain-1)*([hP]*Frequency Of Incident Light)*Post Detection Bandwidth. To calculate ASE Noise Power, you need Mode Number (m), Spontaneous Emission Factor (n_sp), Single Pass Gain (G_s), Frequency Of Incident Light (f) & Post Detection Bandwidth (B). With our tool, you need to enter the respective value for Mode Number, Spontaneous Emission Factor, Single Pass Gain, Frequency Of Incident Light & Post Detection Bandwidth and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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