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 in series in such a way that the obliquely oriented or curved longitudinal sides 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 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 , a light wave polarized initially parallel to the base sides of the converter elements is polarized perpendicularly to the base sides 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 a mode ( e 00 ) propagates whose polarization plane forms an angle different from 45° with the respective base side of the converter element . - 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 in series in such a way that the obliquely oriented or curved longitudinal sides 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 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 , a light wave polarized initially parallel to the base sides of the converter elements is polarized perpendicularly to the base sides 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 a mode ( e 00 ) propagates whose polarization plane forms an angle different from 45° with the respective base side of the converter element . <EOS>