Nanoscale structures on optical fiber for surface enhanced Raman scattering and methods related thereto
First Claim
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1. A method comprising:
- providing an optical fiber having a planar facet end;
attaching a ferrule to the optical fiber adjacent to the planar facet end;
fitting the optical fiber with the ferrule on a spin coater;
coating the planar facet end of the optical fiber with the ferrule with a photoresist;
producing a pattern in the photoresist for a nanoscale structure by interference lithography;
developing the photoresist;
removing the photoresist and a portion of the optic fiber unprotected by the photoresist, thus obtaining a nanoscale structure in the optic fiber; and
depositing a layer of metal on the nanoscale structure.
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Abstract
A nanoscale structure fabricated on a planar end facet of an optic fiber is described, to enable detection of molecules by surface-enhanced Raman scattering. The nanoscale structure may comprise an array of nanopillars. The nanoscale structure may also comprise a non periodic, or random, surface-relief structure. The nanoscale structure may be coated in a metal, comprising, for example, silver, gold, aluminum, iridium, platinum, palladium, copper, or a combination of the same. The nanoscale structure may be fabricated on a planar end facet of an optical fiber by interference lithography.
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Citations
14 Claims
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1. A method comprising:
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providing an optical fiber having a planar facet end; attaching a ferrule to the optical fiber adjacent to the planar facet end; fitting the optical fiber with the ferrule on a spin coater; coating the planar facet end of the optical fiber with the ferrule with a photoresist; producing a pattern in the photoresist for a nanoscale structure by interference lithography; developing the photoresist; removing the photoresist and a portion of the optic fiber unprotected by the photoresist, thus obtaining a nanoscale structure in the optic fiber; and depositing a layer of metal on the nanoscale structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification