Optical waveguide

Details Optical waveguide Optical waveguide

2008-01-22

2008-01-22

Font, Frank F. (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing nonsolid core or cladding

C385S122000, C385S123000, C385S146000

Reexamination Certificate

active

07321712

ABSTRACT:
An elongate waveguide for guiding light includes a core having an elongate region of relatively low refractive index; a microstructured region around the core having elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index; and a boundary at the interface between the core and the microstructured region, the boundary including in the transverse cross-section, a region of relatively high refractive index, which is connected to the microstructured region at a plurality of nodes, at least one relatively enlarged region around the boundary (and excluding a boundary having twelve nodes and six enlarged regions substantially at a mid-point between six pairs of relatively more-widely-spaced apart neighboring nodes).

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