The optical system for injection and / or extraction of application in and out of the sheath of an optical fiber and advantages of the control of alignment of the two fibers abut

摘要

The present invention relates to an optical system for injecting and/or extracting light into and/or out of the cladding of an optical fibre, especially in a method for controlling the alignment of two butt-coupled optical fibres. The system comprises an optical element 200 having an index greater than the medium surrounding the cladding of the fibre and in contact with the latter, the index being adapted in order to define, at its exit, a beam of light rays which, in a meridional plane facing the axis of the fibre, are mutually parallel and have an angle of incidence alpha slightly less than the limiting optical-component/fibre-cladding angle of refraction. The invention also relates to a method for controlling the alignment of the butt-coupled optical fibres. IMAGE