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Description of the LC polarization converter ARCoptix Switzerland – www.arcoptix.com
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Figure 6: LC Driver with two independent outputs that are computer controlled via USB. - Supplying the TN cell : When a bias of 5 V rms is applied the cell is switched on and the entrance polarization is not rotated. In this case at the output of the system presents a radial polarization distribution. When the TN cell is switched OFF, one obtains an azimuthal distribution. - Supplying the phase shifter: When a bias is applied a phase shift between the upper and lower part is produced. The dependency of the phase shift versus the bias (rms) is given in the graphic in the annex. Bias (rms) Frequency Function TN cell 0V off Min.5V ON ~ 1kHz
Switch between radial and azimuthal polarization Phaseshifter0-10V ~ 1kHz Homogenizethe phase
Figure 6: LC Driver with two independent outputs that are computer controlled via USB. - Supplying the TN cell : When a bias of 5 V rms is applied the cell is switched on and the entrance polarization is not rotated. In this case at the output of the system presents a radial polarization distribution. When the TN cell is switched OFF, one obtains an azimuthal distribution. - Supplying the phase shifter: When a bias is applied a phase shift between the upper and lower part is produced. The dependency of the phase shift versus the bias (rms) is given in the graphic in the annex. Bias (rms) Frequency Function TN cell 0V off Min.5V ON ~ 1kHz
Switch between radial and azimuthal polarization Phaseshifter0-10V ~ 1kHz Homogenizethe phase