Liquid-crystal bandpass filter based on the optical rotatory dispersion effect.
A bandpass spectral filter and the test measurement results are presented and described. The filter is developed and constructed by use of a ferroelectric liquid-crystal polarization rotator in combination with dispersive quartz optical rotators, and its wavelength selection is mechanically tunable and electrically switchable.
Measurement and Sensor Laboratory, University of Oulu, Technology Park 127, Fin-87400, Kajaani, Finland. chun.ye@oulu.fi
Chun
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