Active polarization rotator realized based on mixed surface plasma groove waveguide
A surface plasmon and polarization rotator technology, applied in light guides, instruments, optics, etc., can solve the problems of large polarization conversion loss and complex structure
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[0029] Such as figure 1 and 2 As shown, an active polarization rotator based on hybrid surface plasmon trough waveguide, including power beam splitter 1 (50:50 power beam splitter), phase modulation unit 2, polarization rotation control unit 3 and beam combiner 4 , the polarization rotation control unit 3 consists of figure 2 The hybrid surface plasmon groove waveguide shown here has a certain groove width, and the two dielectric waveguides 301 of the hybrid surface plasmon groove waveguide have a certain width, and the Both sides of the mixed surface plasmon trough waveguide are provided with a material 302 having metal properties with a certain thickness, length and width at a certain distance. By rationally optimizing the structural design parameters of the material 302 with metallic properties, the conversion efficiency of the polarization state of the output light is the highest and the polarization-dependent loss is minimized; by changing the relative phase difference...
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