Improving Signal-to-Noise Ratio
Signal-to-noise ratio (SNR or S/N) is a measure used in many disciplines, but is most common in analyzing electrical signals. SNR is the ratio of the power of a signal (desired input) to the power of the background noise (undesired input).
Typically, the signal power “is what it is” (that is, it can’t be controlled or increased). Therefore the path to improving the SNR is to reduce the background noise. This enables better discrimination of the desired information from the undesired background environment.
Iridian Spectral Technologies
Iridian Spectral Technologies Ltd is a diversified optical filter manufacturer that is an international leader in filter design and manufacture especially for application in the fields of fiber optic communications, biomedical optical spectroscopy, 3D entertainment, and aerospace. Iridian is a global supplier with distributors in many countries. Iridian draws on more than two decades of experience to provide:
- Bandpass filters
- Edge filters
- Gain flattening filters
- Notch filters
- Multi-zone filters (MZF)
- Custom filters
- Dichroic filters and beam splitters
- LaseReflect® LRG glasses
- Stray light (black) absorbers
- Linear transmittance filters (LTF)
- Tap couplers
To request more information or a quotation for Iridian products, contact IL Photonics.