Method for producing a fluidic connection component for chromatography

A method for producing a fluidic connection component for chromatography, the fluidic component comprising a main body and at least one optical waveguide held in the main body, wherein the main body is prefabricated with at least one aperture for the at least one optical waveguide, the method comprising:

• connecting the at least one optical waveguide to the main body securely and fluidically tightly by purely a thermal expansion of the main body or the optical waveguide, in which the thermal expansion only occurs during a thermal process, wherein there is no initial or full melting of a contact region between the main body and the at least one optical waveguide, and
• after completion of the thermal process, retaining a thermally induced change in volume of the main body or of the optical waveguide to cause a radial clamping force between the main body and the optical waveguide to occur in a clamping region along a course of the aperture to form a secure and fluidically tight connection between the main body and the optical waveguide at temperatures within a working temperature range,
• wherein a material with a first coefficient of thermal expansion is used for the main body and a material with a second coefficient of thermal expansion is used for the at least one optical waveguide, the first coefficient of thermal expansion is at least twice the second coefficient of thermal expansion, or a material with a third coefficient of thermal expansion is used for the at least one optical waveguide and a material with a fourth coefficient of thermal expansion is used for the main body, the third coefficient of thermal expansion is at least twice the fourth coefficient of thermal expansion.