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Maximum Photodiode 3 dB Bandwidth Calculator

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✖Carrier Velocity in a photodiode refers to the speed at which charge carriers (either electrons or holes) move within the semiconductor material under the influence of an applied electric field.ⓘ Carrier Velocity [υ_d]			+10% -10%
✖The depletion Layer Width is the distance across the region near the p-n junction where mobile charge carriers (electrons and holes) have been significantly depleted or removed.ⓘ Depletion Layer Width [w]			+10% -10%

✖Maximum 3dB Bandwidth of the photodiode is the frequency at which the photodiode's response drops to -3 decibels (dB) or approximately 70.7% of its maximum response.ⓘ Maximum Photodiode 3 dB Bandwidth [B_m]

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Maximum Photodiode 3 dB Bandwidth

Formula

B m = \frac{υ d}{2 \cdot π \cdot w}

Example

13.01534 Hz = \frac{736 m/s}{2 \cdot π \cdot 9 m}

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Maximum Photodiode 3 dB Bandwidth Solution

STEP 0: Pre-Calculation Summary

Formula Used

Maximum 3db Bandwidth = Carrier Velocity/(2*pi*Depletion Layer Width)
B_m = υ_d/(2*pi*w)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Maximum 3db Bandwidth - (Measured in Hertz) - Maximum 3dB Bandwidth of the photodiode is the frequency at which the photodiode's response drops to -3 decibels (dB) or approximately 70.7% of its maximum response.
Carrier Velocity - (Measured in Meter per Second) - Carrier Velocity in a photodiode refers to the speed at which charge carriers (either electrons or holes) move within the semiconductor material under the influence of an applied electric field.
Depletion Layer Width - (Measured in Meter) - The depletion Layer Width is the distance across the region near the p-n junction where mobile charge carriers (electrons and holes) have been significantly depleted or removed.

STEP 1: Convert Input(s) to Base Unit

Carrier Velocity: 736 Meter per Second --> 736 Meter per Second No Conversion Required
Depletion Layer Width: 9 Meter --> 9 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

B_m = υ_d/(2*pi*w) --> 736/(2*pi*9)

Evaluating ... ...

B_m = 13.0153375684039

STEP 3: Convert Result to Output's Unit

13.0153375684039 Hertz --> No Conversion Required

FINAL ANSWER

13.0153375684039 ≈ 13.01534 Hertz <-- Maximum 3db Bandwidth

(Calculation completed in 00.004 seconds)

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Created by Santhosh Yadav

Dayananda Sagar College Of Engineering (DSCE), Banglore

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< Optical Detectors Calculators

Incident Photon Rate

Go Incident Photon Rate = Incident Optical Power/([hP]*Frequency Of Light Wave)

Long Wavelength Cutoff Point

Go Wavelength Cutoff Point = [hP]*[c]/Bandgap Energy

Quantum Efficiency of Photodetector

Go Quantum Efficiency = Number of Electrons/Number of Incident Photons

Electron Rate in Detector

Go Electron Rate = Quantum Efficiency*Incident Photon Rate

Maximum Photodiode 3 dB Bandwidth Formula

Maximum 3db Bandwidth = Carrier Velocity/(2*pi*Depletion Layer Width)
B_m = υ_d/(2*pi*w)

Why is Maximum Photodiode 3 dB Bandwidth required?

The maximum 3 dB bandwidth of a photodiode is crucial because it directly impacts the photodiode's ability to detect and respond to rapidly changing optical signals. This parameter is essential in applications such as optical communication, where it determines the data rate capacity and signal fidelity of the system.

How to Calculate Maximum Photodiode 3 dB Bandwidth?

Maximum Photodiode 3 dB Bandwidth calculator uses Maximum 3db Bandwidth = Carrier Velocity/(2*pi*Depletion Layer Width) to calculate the Maximum 3db Bandwidth, Maximum Photodiode 3 dB Bandwidth of the photodiode is the frequency at which the photodiode's response drops to -3 decibels (dB) or approximately 70.7% of its maximum response. Maximum 3db Bandwidth is denoted by B_m symbol.

How to calculate Maximum Photodiode 3 dB Bandwidth using this online calculator? To use this online calculator for Maximum Photodiode 3 dB Bandwidth, enter Carrier Velocity (υ_d) & Depletion Layer Width (w) and hit the calculate button. Here is how the Maximum Photodiode 3 dB Bandwidth calculation can be explained with given input values -> 0.282942 = 736/(2*pi*9).

FAQ

What is Maximum Photodiode 3 dB Bandwidth?

Maximum Photodiode 3 dB Bandwidth of the photodiode is the frequency at which the photodiode's response drops to -3 decibels (dB) or approximately 70.7% of its maximum response and is represented as B_m = υ_d/(2*pi*w) or Maximum 3db Bandwidth = Carrier Velocity/(2*pi*Depletion Layer Width). Carrier Velocity in a photodiode refers to the speed at which charge carriers (either electrons or holes) move within the semiconductor material under the influence of an applied electric field & The depletion Layer Width is the distance across the region near the p-n junction where mobile charge carriers (electrons and holes) have been significantly depleted or removed.

How to calculate Maximum Photodiode 3 dB Bandwidth?

Maximum Photodiode 3 dB Bandwidth of the photodiode is the frequency at which the photodiode's response drops to -3 decibels (dB) or approximately 70.7% of its maximum response is calculated using Maximum 3db Bandwidth = Carrier Velocity/(2*pi*Depletion Layer Width). To calculate Maximum Photodiode 3 dB Bandwidth, you need Carrier Velocity (υ_d) & Depletion Layer Width (w). With our tool, you need to enter the respective value for Carrier Velocity & Depletion Layer Width and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Maximum 3db Bandwidth?

In this formula, Maximum 3db Bandwidth uses Carrier Velocity & Depletion Layer Width. We can use 2 other way(s) to calculate the same, which is/are as follows -

Maximum 3db Bandwidth = 1/(2*pi*Transit Time)
Maximum 3db Bandwidth = 1/(2*pi*Transit Time*PhotoConductive Gain)

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