Photonic Crystal Fibers and Methods for Manufacturing the Same
AssigneeCorning Incorporated
InventorsNicholas Francis Borrelli, Karl William Koch, III, David John Mcenroe
Life of this patent
Estimating the term…
Abstract
Photonic crystal fibers include a plurality of extruded non-circular canes, each of the extruded non-circular canes comprising at least one hole. Methods for manufacturing photonic crystal fibers include hot-forming a glass material into a glass tube having a non-circular outer cross-section, drawing the glass tube to obtain a plurality of canes, stacking the canes to create a preform build and drawing the preform build to obtain a photonic crystal fiber.
Claims20
A method for manufacturing a photonic crystal fiber comprising:
- hot-forming a glass material into a glass tube having a non-circular outer cross-section;
- drawing the glass tube to obtain a plurality of canes;
- stacking the canes to create a preform build;
- and
- drawing the preform build to obtain a photonic crystal fiber.
A method for manufacturing a photonic crystal fiber comprising:
- extruding a precursor glass material having a composition, expressed in terms of weight percentages on an oxide basis, consisting essentially of:
- 55%-75% SiO2, 5%-10% Na2O, 20%-35% B2O3 and 0%-5% Al2O3, to obtain a glass tube having a plurality of channels extending along the axis of the tube;
- leaching the glass tube to obtain a porous glass tube comprising at least 90% by weight of silica;
- heating the porous glass tube such that the pores in the glass structure collapse to form densified glass to obtain a densified glass tube;
- drawing the densified glass tube to obtain a plurality of glass canes;
- forming a stack of the glass canes, each of the glass canes in direct contact with an adjacent glass cane in the stack;
- and
- drawing the stack to obtain a photonic crystal fiber.
A photonic crystal fiber preform build comprising a plurality of extruded non-circular glass canes, each of the extruded non-circular glass canes comprising at least one channel extending along the axis of the cane.
Dependencies are inferred from the claim text.