ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,482, issued on April 21, was assigned to Heriot-Watt University (Edinburgh, Great Britain).
"Method of fabricating an optical fibre preform" was invented by Robert R Thomson (Edinburgh, Great Britain) and Calum Ross (Edinburgh, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of fabricating an optical fibre preform is disclosed comprising using a subtractive process on an optical monolith to define therein at least a transverse section of the optical fibre preform, wherein the transverse section comprises at least two regions with different refractive indexes. An optical fibre preform fabricated in accordance with the method is...