Abstract:
Apparatus is provided for effecting controlled alterations in the polarization of a multiwavelength beam of radiation. Plural stress responsive elements are arranged in cascade to receive the radiation from a source; the elements being arranged in differing predetermined directions with respect to the polarization of the radiation. Dependent on the stress applied to the elements, the apparatus is tunable for bandwidth response. When stress is applied, the apparatus operates to provide a second state of operation.
Abstract:
A LIGHT BEAM IS DIGITALLY DEFLECTED TO SELECTED ONES OF A PLURALITY OF DISCRETE POSITIONS IN ACCORDANCE WITH A LOGICAL FUNCTION WHICH CONTROLS THE OPERATION OF THE BEAM DEFLECTING MEANS. OPTICAL ENCODING MEANS UNIQUELY ENCODE A CHARACTERISTIC OF THE BEAM FOR EACH DISCRETE POSITION. WHEN THE LIGHT BEAM IS POLYCHROMATIC, THE LIGHT BEAM IS PASSED THROUGH A DIFFERENT COMBINATION OF FILTERS AT EACH DISCRETE POSITION SO THAT THE BEAM CONTAINS A UNIQUE COMBINATION OF WAVELENGTHS AT EACH POSITION. WHEN
THE LIGHT BEAM IS MONOCHROMATIC, THE BEAM MAY BE SPLIT INTO A UNIQUE COMBINATION OF PATHS FOR EACH DISCRETE POSITION AND THEN INTENSITY-ENDODED BY MASKS IN THE PATHS. A MONOCHROMATIC BEAM MAY ALSO BE DIRECTED TO A PROCESSED LIPPMANN FILM WHICH WILL REFLECT THE BEAM AT UNIQUE COMBINATIONS OF BRAGG ANGLES CORRESPONDING TO EACH DISCRETE POSITION.