Center Wavelength (CWL)
An optical bandpass filter is designed to transmit light within a specific range of wavelengths while blocking light outside this range. The center wavelength (CWL) is the midpoint of the transmission band where the filter achieves peak transmission.
Key Points:
- The center wavelength (CWL) is the midpoint between the two wavelengths where transmission drops to 50% of peak transmission
- It represents the nominal wavelength of the filter
