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US 8,306,379 B2Granted
Hollow-core photonic crystal fibre
AssigneeGlophotonics
InventorsAbdel Fetah Benabid, Francois Yves Michel Denis Couny, Peter John Roberts
Life of this patent
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Abstract
A hollow core photonic crystal fiber (HCPCF) having a wavelength of operation, the HCPCF comprising: a core region having a first refractive index; a cladding region surrounding the core region and comprising a plurality of microcapillaries arranged in a transverse structure having a pitch, the pitch of the structure being at least five times larger than the wavelength of operation, the cladding region having a second refractive index higher than the first refractive index.
Claims12
A hollow core photonic crystal fibre (HCPCF) having a wavelength of operation, the HCPCF comprising:
- a core region having a first refractive index;
- a cladding region surrounding the core region and comprising a plurality of microcapillaries arranged in a transverse structure having a pitch, the pitch of the structure being at least five times larger than the wavelength of operation, the cladding region having a second refractive index higher than the first refractive index, wherein the structure comprises nodes having a thickness <10% of the pitch at its vertices and portions of microcapillary walls connecting the nodes having a thickness of <3% of the pitch in a transverse direction.
Dependencies are inferred from the claim text.