Abstract: The present invention relates to a method for connecting a solid core optical fiber (2) with another optical fiber (20), wherein the solid core optical fiber (2) comprises a joining device (10), which is created on one axial end of the solid core optical fiber (2) using a 3D printer and wherein the other optical fiber (20) is incorporated in the joining device (10) via an axial end of the other optical fiber (20), which is thus connected with the solid core optical fiber (2). In addition, the invention relates to a solid core optical fiber (2) with a joining device (10) created by a 3D-printer, and the relevant use of a 3D printer.

Abstract: Optical system and method for the provision of at least one high-frequency modulated light pulse having a pump light source for the provision of high-frequency pump light pulses; an optical resonator having a coupling element for coupling the pump light pulses into the resonator and a decoupling element for decoupling the at least one high-frequency modulated light pulse from the resonator and an optically non-linear frequency conversion medium arranged in the resonator for transforming the pump light pulses in each case into two conversion light pulses and one residual pump light pulse. The resonator comprises a feedback arm for at least one of the two conversion light pulses and/or the residual pump light pulse, in which an optically non-linear feedback medium is arranged for the optical modulation of the at least one conversion light pulse and/or the residual pump light pulse.

Abstract: The present invention relates to a method for connecting a solid core optical fiber (2) with another optical fiber (20), wherein the solid core optical fiber (2) comprises a joining device (10), which is created on one axial end of the solid core optical fiber (2) using a 3D printer and wherein the other optical fiber (20) is incorporated in the joining device (10) via an axial end of the other optical fiber (20), which is thus connected with the solid core optical fiber (2). In addition, the invention relates to a solid core optical fiber (2) with a joining device (10) created by a 3D-printer, and the relevant use of a 3D printer.

Abstract: Optical system and method for the provision of at least one high-frequency modulated light pulse having a pump light source for the provision of high-frequency pump light pulses; an optical resonator having a coupling element for coupling the pump light pulses into the resonator and a decoupling element for decoupling the at least one high-frequency modulated light pulse from the resonator and an optically non-linear frequency conversion medium arranged in the resonator for transforming the pump light pulses in each case into two conversion light pulses and one residual pump light pulse. The resonator comprises a feedback arm for at least one of the two conversion light pulses and/or the residual pump light pulse, in which an optically non-linear feedback medium is arranged for the optical modulation of the at least one conversion light pulse and/or the residual pump light pulse.