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US 12,461,307 B2Granted
Waveguides
AssigneeThe University of Salford
InventorMaziar Nezhad
Life of this patent
Estimating the term…
Abstract
An optical waveguide apparatus for guiding optical radiation therein, comprising a spring defining an optical grating structure with a grating period which is mechanically variable to control the Bloch-mode effective refractive index and/or optical path of at least a part of the optical waveguide in respect of a given frequency of guided optical radiation.
Claims37
An optical waveguide apparatus for guiding optical radiation therein, comprising:
- a serpentine spring defining an optical grating structure via a plurality of spring periods which together form the serpentine spring, the optical grating structure thereby having a grating period with the same period as the spring period which is mechanically variable to control the Bloch-mode effective refractive index of, and/or optical path length in, at least a part of the optical waveguide in respect to optical radiation guided across the spring periods along the optical waveguide.
A plasmonic waveguide apparatus for guiding surface plasmons thereon, comprising:
- a serpentine spring made from plasmonic material, the serpentine spring defining an optical grating structure via a plurality of spring periods which together form the serpentine spring, the optical grating structure thereby having a grating period with the same period as the spring period which is mechanically variable to control the Bloch-mode effective refractive index of, and/or optical path length in, at least a part of the plasmonic waveguide in respect of a given frequency of surface plasmon guided across the spring periods along the optical waveguide.
Dependencies are inferred from the claim text.