Flexible ultra-long surface plasmon polariton waveguide

Abstract

The invention relates to a flexible ultra-long surface plasmon polariton waveguide which comprises a photoelectric input end, a photoelectric output end, a flexible substrate and a flexible surface plasmon polariton waveguide line array, wherein the flexible surface plasmon polariton waveguide is manufactured on the flexible waveguide substrate, then a planar waveguide structure is bent, edges are further aligned for welding, and an ultra-long surface plasmon polariton waveguide structure with the independent photoelectric input end and the photoelectric output end is finally formed. The flexible surface plasmon polariton waveguide array comprises a flexible organic polymer cladding layer and a waveguide metal core layer, a selected metal material is gold, silver, copper, aluminum and other precious metal materials with surface plasmon resonance property in a light frequency wave band, and all light waveguide structures are made of an organic flexible polymer material, so that the flexible ultra-long surface plasmon polariton waveguide has great flexibility, can be bent arbitrarily and even folded, is small in volume and can further improve portability; and the surface plasmon polariton waveguide capable of simultaneously conducting photoelectric signals is adopted as a core layer, so that the obstacle that the photoelectric signals are not compatible is broken.

Description

technical field [0001] The invention belongs to the technical field of integrated optics, in particular to a surface plasmon ultra-long optical waveguide based on a flexible substrate. Background technique [0002] With the development of semiconductor and integrated optical technology, it has become a reality to prepare various waveguide devices with flexible substrates. Existing planar optical waveguide substrates are mainly inorganic materials such as glass and silicon wafers. This technology has disadvantages such as poor temperature stability, large weight, poor mechanical properties, and easy breakage, which can be overcome by using flexible organic polymer substrates instead. The above disadvantages, the flexible substrate of the same area is only about one tenth of the weight of the substrate of inorganic materials, and the excellent mechanical properties make it difficult for vibrations in general to affect the performance of the flexible waveguide. [0003] In rec...

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Problems solved by technology

Therefore, long-range surface plasmon waveguides are generally only used to prepare straight waveguide devices, and it is impossible to develop ultra-long curved waveguides or delay lines, etc.

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