Method of producing distributing reflectors, and reflectors provided by the method
AssigneeADC Telecommunications, Inc.
InventorUrban Eriksson
Life of this patent
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Abstract
A method of producing a distributed reflector that includes a grating, wherein regions (21) are provided in the grating material transversely to the longitudinal axis of the grating, wherein the refractive index in said regions is lower or higher than the refractive index in surrounding parts of the grating, and wherein the distance between mutually adjacent regions (22) is varied. The invention is characterised by giving the regions (21) mutually the same width, and determining the positions of the various regions along the longitudinal axis (X) of the grating in relation to the wavelengths to be reflected.
Claims10
A method of producing a distributed reflector that includes a grating, wherein regions (21) are provided in the grating material transversely to the longitudinal axis of the grating, wherein the refractive index in said regions is lower or higher than the refractive index in surrounding parts of the grating, and wherein the distance between mutually adjacent regions (22) is varied, characterised by giving the regions (21) mutually the same width, and determining the positions of the various regions along the longitudinal axis (X) of the grating in relation to the wavelengths to be reflected.
A distributed reflector which includes a grating and which is a multiple wavelength reflector, wherein the grating includes in the grating material regions (21) that lie transversely to the longitudinal axis of the grating and which have a refractive index which is lower or higher than the refractive index of the surrounding part of the grating and where the distance between mutually adjacent regions (22) is varied, characterised in that the regions, (21) have identical widths;
- and in that the various regions (21) have mutually different positions along the longitudinal axis (X) of the grating corresponding to the wavelengths to be reflected.
Dependencies are inferred from the claim text.