Spliced joint between two optical fibers, and method for the production of such a spliced joint

Abstract

Disclosed is a spliced joint between two fibers, in which at least one of the fibers (2, 3) has a fiber core (4) comprising at least one inner signaling core (6) and a pumping core (7) that surrounds the signaling core (6), and a fiber cladding (5) which rests against the pumping core (7) and is used for guiding light within the pumping core. The fiber cladding (5) of the at least one fiber (2, 3) is removed at least in part in a radial direction in a connection zone (11, 14) extending from the spliced end (12, 13) of the fiber (2, 3) along a predetermined length in the longitudinal direction of the fiber. Furthermore, a supporting jacket (15) is provided, inside which the spliced ends (12, 13) of the two fibers (2, 3) are arranged and which extends along the entire connection zone (11, 14) and therebeyond. The supporting jacket (15) is mechanically connected to both fibers (2, 3) next to the connection zone (11, 14) while not being mechanically connected to and being at a distance from the respective fiber (2, 3) along the entire connection zone (11, 14).

Description

technical field [0001] The present invention relates to a joint between two optical fibers, wherein at least one of the fibers has a fiber core and a fiber sheath, the fiber core includes at least an inner signal core and a pump core surrounding the inner signal core, the fiber The outer sheath is attached to the pump core and is used to guide the light in the pump core. Furthermore, the invention relates to a method of manufacturing such joints. Background technique [0002] When the fiber is designed to guide high light power with high light beam quality, there may be difficulties with increased sensitivity to bending, for example, causing increased losses to occur that are very detrimental to the light guided in the fiber core, and / or Unexpected coupling occurs between the different modes guided in the fiber core. Both of these consequences can be very detrimental to unintended power losses for the desired mode. [0003] In order to reduce the sensitivity to bending, i...

AI Technical Summary

Problems solved by technology

[0006] If the method known from German Patent No. 35 30 963 A1 is applied to a joint between two optical fibers, wherein at least one fiber has a fiber core and a fiber sheath, the fiber core includes at least one inner signal core and surrounds the The pump core of the inner signal core, the fiber sheath abuts against the pump core and is used to guide the light in the pump core, the guiding properties in the connection end area are substantially impaired

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