SNR for a given NEP, Power
Calculate the Signal-to-Noise Ratio (SNR) for a provided NEP and input power.
Input Power (W)
Input Wavelength (μm)
Measurement Bandwidth (Hz)
NEP(W/√Hz)
Response Peak(μm)
Relative Response at Wavelength
SNR
NEP is a sensor figure of merit that incorporates the detector responsivity and noise to provide a way of comparing different detector materials or sizes.
This model uses the Linear Responsivity Relationship to correct for off-peak response. This is valid for wavelengths below the peak to within 10% percent.
This simplified model is valid for a monochromatic signal, such as from a laser.
To use this calculator
- Gather system inputs and enter into fields.
- Gather sensor specifications and enter into fields.
System Inputs Needed
- Input power
- Input wavelength
- Measurement bandwidth
From sensor specifications
- NEP
- Peak response wavelength
Power for given NEP, SNR
Calculate the required input power for a desired SNR with a provided NEP.
SNR
Input Wavelength (μm)
Measurement Bandwidth (Hz)
NEP(W/√Hz)
Response Peak(μm)
Relative Response at Wavelength
Input Power (W)
NEP is a sensor figure of merit that incorporates the detector responsivity and noise to provide a way of comparing different detector materials or sizes.
This model uses the Linear Responsivity Relationship to correct for off-peak response. This is valid for wavelengths below the peak to within 10% percent.
This simplified model is valid for a monochromatic signal, such as from a laser.
To use this calculator
- Gather system inputs and enter into fields.
- Gather sensor specifications and enter into fields.
System Inputs Needed
- Desired SNR
- Input wavelength
- Measurement bandwidth
From sensor specifications
- NEP
- Peak response wavelength