초록 ▼

A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. Layers of glass, adjacent ones of which have different composition, are deposited on a substrate. A process is preferred whereby layers of glass soot are dep

A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. Layers of glass, adjacent ones of which have different composition, are deposited on a substrate. A process is preferred whereby layers of glass soot are deposited. The soot is consolidated and the resultant laminated glass structure is severed to form an elongated azimuthally asymmetric laminated core structure. A layer of cladding glass is added to the core structure, and the resultant preform is drawn into an optical fiber.

대표청구항 ▼

In a method of forming an optical fiber comprising the steps of providing an elongated core structure, applying a layer of cladding glass to said core structure, and forming an optical fiber from the resultant preform, the step of providing a core structure being such that it comprises (a) providing

In a method of forming an optical fiber comprising the steps of providing an elongated core structure, applying a layer of cladding glass to said core structure, and forming an optical fiber from the resultant preform, the step of providing a core structure being such that it comprises (a) providing a substrate, (b) forming on said substrate a laminated glass structure, adjacent glass lamina of the laminated glass structure having different refractive indices, and (c) removing one or more azimuthally asymmetric laminated core structures from the laminated glass structure.