Fabrication of surface reliefs on facets of singlemode optical fibres using nanoimprint lithography

Reported is the fabrication and investigation of surface reliefs on cleaved facets of optical fibres using nanoimprint lithography. The prepared structures are diffractive elements and arrays of holes with sub-wavelength feature sizes. The results obtained indicate that nanoimprint lithography affords opportunity to miniaturise optical devices at low fabrication costs, replacing free-space optical elements.