Shanghai Jiao Tong University

Zeyu Lei

Tian Yang

Provided are a metallic micro/nano-structure and an optical fiber having it on the end-facet. The metallic micro/nano-structure comprises of a metallic film and a micro/nano pattern in the metallic film. The micro/nano pattern divides the metallic film into a periodic structure and an embedded defect structure; the defect structure locally breaks the periodicity of the periodic structure; in at least one dimension, the periodic structure has a period T satisfying 0.75&#x3bb;&#x3c;T&#x3c;1.25&#x3bb;, &#x3bb; is a wavelength of a surface plasmon at an interface between the metallic film and a medium; and the surface plasmon resonates within the defect structure and its surrounding area. The optical fiber end-facet device takes the advantages of single-mode optical fiber systems, including stable optical transmission, compact systems and flexible configurations. It achieves high efficiency coupling between fiber guided lightwaves and surface plasmon resonance, using a metallic micro/nano-structure which is a distributed feedback resonant cavity.

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Shanghai, China

Zeyu Lei