Pamene voteji ndi anawonjezera kwa ma electro-optic crystal, ndi refractive index ndi zina kuwala katundu wa kristalo kusintha, kusintha polarization boma la yoweyula kuwala, kuti circularly polarized kuwala amakhala elliptically polarized kuwala, ndiyeno amakhala linearly polarized kuwala kudzera polarizer, ndi mphamvu kuwala ndi modulated. Panthawiyi, kuwala kowala kumakhala ndi mauthenga omveka ndipo kumafalikira mu danga laulere. Photodetector imagwiritsidwa ntchito kulandira chizindikiro chowoneka bwino pamalo olandirira, ndiyeno kutembenuka kwa dera kumachitika kuti asinthe chizindikiro cha kuwala kukhala chizindikiro chamagetsi. Chizindikiro cha phokoso chimabwezeretsedwa ndi demodulator, ndipo potsirizira pake kufalikira kwa kuwala kwa chizindikiro cha phokoso kumatsirizidwa. Mpweya wogwiritsidwa ntchito ndi chizindikiro chotumizira, chomwe chingakhale chotulutsa chojambulira cha wailesi kapena tepi drive, ndipo kwenikweni ndi chizindikiro chamagetsi chomwe chimasiyana ndi nthawi.