Patent ID: 7660034
Filing Date: 2010-02-09
Classification: B82Y,C03B,C03C,G02B,H01S,Y10T

Abstract:
1. A method of producing an amplifying optical device comprising a first pump source, at least one pump optical fibre section and at least one amplifying optical fibre section, which amplifying optical device is such that: the pump optical fibre section and the amplifying optical fibre section are coated with a common coating material, and are in optical contact, along a portion of their length, and the pump optical fibre section and the amplifying optical fibre section are made substantially from glass, the method comprising: drawing a single composite fibre comprising a pump optical fibre and an amplifying optical fibre each defined by an outside longitudinally extending surface, and wherein the outside longitudinally extending surfaces are in optical contact with each other; coating the single composite fibre with the common coating material in a fibre drawing process; obtaining the amplifying optical fibre section and the pump optical fibre section from the single composite fibre; removing the coating material from two opposite end portions of each of the pump optical fibre section and the amplifying optical fibre section; separating each of the two end portions of the pump optical fibre section from the corresponding end portions of the amplifying optical fibre section; and connecting one of the separated end portions of the pump optical fibre section to the first pump source.