A Review on Different Optical Filters

Filters by its name suggests that it is a type of device which let some signal to pass and stop others depending on the properties of filters. Optical filters is a type of filter which filters light of different wavelengths. Absorptive filters, Dichroic filters, Fabry – Perot filters, neutral density filters, band pass filters and photonics based filters are some of the filters discussed in this paper along with their types and applications