Filter coatings can be applied to both single and multi-mode fibres, with special consideration to the AOI distributions being taken for multi-mode. The coatings may be designed to work when coupled to another fibre or to air, and tips can be connectorised, bare, tapered or lenses.
Coated fibre tips have a wide range of applications including laser coupling, fibre Raman probes, fibre-based flow cytometry and fibre interferometers.