A method for producing a polarization converter, comprising the following steps: - producing a first converter element which has a base side, an upper side extending parallel to the base side, and a longitudinal side oriented obliquely at an angle ε 1 to the base side or a curved longitudinal side; - producing a second converter element which has a base side, an upper side extending parallel to the base side, and a longitudinal side oriented obliquely at an angle ε 2 to the base side or a curved longitudinal side; - arranging the first and the second converter element (11, 12) in series in such a way that the obliquely oriented or curved longitudinal sides (114, 124, 1240) point in opposite directions, wherein - the first converter element has a length L 1 and its upper side has a width w 1 measured perpendicularly to the longitudinal direction of the first converter element; and - the second converter element has a length L 2 and its upper side has a width w 2 measured perpendicularly to the longitudinal direction of the second converter element, characterized in that the production of the first and the second converter element (11, 12) comprises a determination of such different lengths L 1 and L 2 as well as different widths w 1 and w 2 and/or different angles ε 1 and ε 2 that after passing through the first and the second converter element (11, 12), a light wave polarized initially parallel to the base sides (111, 121) of the converter elements (11, 12) is polarized perpendicularly to the base sides (111, 121) of the converter elements, wherein the widths w 1, w 2 and/or the angles ε 1, ε 2 are chosen such that in each the first and the second converter element (11, 12) a mode ( e 00) propagates whose polarization plane forms an angle different from 45° with the respective base side (111, 121) of the converter element (11, 12). - producing a first converter element which has a base side, an upper side extending parallel to the base side, and a longitudinal side oriented obliquely at an angle ε 1 to the base side or a curved longitudinal side; - producing a second converter element which has a base side, an upper side extending parallel to the base side, and a longitudinal side oriented obliquely at an angle ε 2 to the base side or a curved longitudinal side; - arranging the first and the second converter element (11, 12) in series in such a way that the obliquely oriented or curved longitudinal sides (114, 124, 1240) point in opposite directions, wherein - the first converter element has a length L 1 and its upper side has a width w 1 measured perpendicularly to the longitudinal direction of the first converter element; and - the second converter element has a length L 2 and its upper side has a width w 2 measured perpendicularly to the longitudinal direction of the second converter element, characterized in that the production of the first and the second converter element (11, 12) comprises a determination of such different lengths L 1 and L 2 as well as different widths w 1 and w 2 and/or different angles ε 1 and ε 2 that after passing through the first and the second converter element (11, 12), a light wave polarized initially parallel to the base sides (111, 121) of the converter elements (11, 12) is polarized perpendicularly to the base sides (111, 121) of the converter elements, wherein the widths w 1, w 2 and/or the angles ε 1, ε 2 are chosen such that in each the first and the second converter element (11, 12) a mode ( e 00) propagates whose polarization plane forms an angle different from 45° with the respective base side (111, 121) of the converter element (11, 12).