Load Resistor Calculator

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C-V Actions of Optics Transmission

Fiber Optic Parameters

Optical Detectors

Transmission Measurements

✖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%
✖Capacitance of a photodiode refers to its ability to store electrical charge when subjected to an applied voltage or when exposed to light.ⓘ Capacitance [C]			+10% -10%

✖Load resistance refers to the resistance that is connected to the output of an electronic component or circuit.ⓘ Load Resistor [R_L]

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Formula

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Load Resistor

Formula

`"R"_{"L"} = 1/(2*pi*"B"*"C")`

Example

`"3.310211kΩ"=1/(2*pi*"8e6Hz"*"6.01pF")`

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Load Resistor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Load Resistance = 1/(2*pi*Post Detection Bandwidth*Capacitance)
R_L = 1/(2*pi*B*C)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Load Resistance - (Measured in Ohm) - Load resistance refers to the resistance that is connected to the output of an electronic component or circuit.
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.
Capacitance - (Measured in Farad) - Capacitance of a photodiode refers to its ability to store electrical charge when subjected to an applied voltage or when exposed to light.

STEP 1: Convert Input(s) to Base Unit

Post Detection Bandwidth: 8000000 Hertz --> 8000000 Hertz No Conversion Required
Capacitance: 6.01 Picofarad --> 6.01E-12 Farad (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_L = 1/(2*pi*B*C) --> 1/(2*pi*8000000*6.01E-12)

Evaluating ... ...

R_L = 3310.2109628098

STEP 3: Convert Result to Output's Unit

3310.2109628098 Ohm -->3.3102109628098 Kilohm (Check conversion here)

FINAL ANSWER

3.3102109628098 ≈ 3.310211 Kilohm <-- Load Resistance

(Calculation completed in 00.004 seconds)

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Credits

Created by Santhosh Yadav

Dayananda Sagar College Of Engineering (DSCE), Banglore

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

Verified by Passya Saikeshav Reddy

CVR COLLEGE OF ENGINEERING (CVR), India

Passya Saikeshav Reddy has verified this Calculator and 10+ 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

Load Resistor Formula

Load Resistance = 1/(2*pi*Post Detection Bandwidth*Capacitance)
R_L = 1/(2*pi*B*C)

How is Load Resistance useful?

Load resistance in a photodiode circuit is useful for converting the photocurrent generated by the photodiode into a voltage signal. By adjusting the value of the load resistance, you can control the amplification of the signal, making it easier to measure and process.

How to Calculate Load Resistor?

Load Resistor calculator uses Load Resistance = 1/(2*pi*Post Detection Bandwidth*Capacitance) to calculate the Load Resistance, Load Resistor is used in conjunction with the photodiode to create a photodiode amplifier or transimpedance amplifier circuit. Its primary purpose is to convert the photocurrent generated by the photodiode into an output voltage. Load Resistance is denoted by R_L symbol.

How to calculate Load Resistor using this online calculator? To use this online calculator for Load Resistor, enter Post Detection Bandwidth (B) & Capacitance (C) and hit the calculate button. Here is how the Load Resistor calculation can be explained with given input values -> 0.00331 = 1/(2*pi*8000000*6.01E-12).

FAQ

What is Load Resistor?

Load Resistor is used in conjunction with the photodiode to create a photodiode amplifier or transimpedance amplifier circuit. Its primary purpose is to convert the photocurrent generated by the photodiode into an output voltage and is represented as R_L = 1/(2*pi*B*C) or Load Resistance = 1/(2*pi*Post Detection Bandwidth*Capacitance). Post Detection Bandwidth refers to the bandwidth of the electrical signal after it has been detected and converted from an optical signal & Capacitance of a photodiode refers to its ability to store electrical charge when subjected to an applied voltage or when exposed to light.

How to calculate Load Resistor?

Load Resistor is used in conjunction with the photodiode to create a photodiode amplifier or transimpedance amplifier circuit. Its primary purpose is to convert the photocurrent generated by the photodiode into an output voltage is calculated using Load Resistance = 1/(2*pi*Post Detection Bandwidth*Capacitance). To calculate Load Resistor, you need Post Detection Bandwidth (B) & Capacitance (C). With our tool, you need to enter the respective value for Post Detection Bandwidth & Capacitance 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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