FIELD: electronic engineering. SUBSTANCE: polarization changer TRF1 with double beam refraction built around substrate material has great number of locations accommodating respective mode-transducer electrodes Eij, where I - 1, 2, :n, individually adjusted for more than two groups so that desired compensation of polarization mode dispersion is attained. EFFECT: provision for any desired frequency-dependent polarization changes within transmission band used. 22 cl, 13 dwg
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