Patent ID: 6947635

Claim:
A device for transmitting light through an optical fiber ( 1 ) between optical components (B 1 , B 2 ) of an optical arrangement provided at the input end (C) and the output end (R; K; O) of the optical fiber ( 1 ), and which includes a mode mixer having guidance means for curved, rigid guidance of at least a first subsegment (PQ; IJ; FGHI; FL; LM; MN) of the optical fiber ( 1 ), wherein the radius of curvature of the curved guide is less than a first threshold value, below which the light beam profile is homogenized by the optical fiber ( 1 ), characterized in that the guidance means is conformed in such manner that it guides an optical fiber ( 1 ) in the form of a thick core fiber and the device further includes a reinforcing means rigidly connected with the mode mixer for rigid guidance of a second subsegment (QR; JK; NO) of the thick core fiber ( 1 ), which is connected to the first subsegment (PQ FGHI; IJ; FL; LM; MN) and extends essentially as far as optical component (B 2 ) at output end (R; K; O), wherein the reinforcing means is rigidly connected at the output end with the optical component (B 2 ) during use in the optical arrangement and the overall length of the first and second subsegments together is at least such that the output end (R; K; O) of the thick core fiber ( 1 ) is mechanically stabilized.