System, method, and computer program product for magneto-optic device display

[0219]FIG. 12 is a schematic diagram of a second specific implementation of the system shown in FIG. 38 including a partially conductively coated preform without a superficial helical cut. This second example is an alternative to the coated preform which is cut with a helical track as shown in FIG. 11, This second embodiment includes a partially coated preform 1200 that is twisted (shown by arrow 1205) and precessed in the direction of the Y-axis without a facilitating helical cut. A tool removes some of the coating to leave a helical conductive strip that wraps around the waveguiding structure. Preform 1200 is then drawn to produce a waveguiding structure 1210 and twisted using a first yoke 1215 and a second yoke 1220 while the material is above its vitreous temperature, such that the twist persists after cooling without need for a confining jacket material. In the preferred embodiment, the yokes are oppositely twisting structures to improve the number of twists per unit length. The r

[0222]FIG. 13 is a schematic diagram of a third specific implementation of the system shown in FIG. 38 including a conductive element 1300 embedded / applied into / onto a preform 1305. This third embodiment provides for conductive element (e.g., a wire, conductive polymer and the like) 1300 to be embedded in or disposed within a preform 1305 as the preform rotates and precesses along the Y-axis (which as depicted in FIG. 52 is downward in the drawing tower) to produce a longitudinally extending pre-coilform structure 1310. Conductive element 1300 is fed into or laid upon or otherwise disposed in connection with preform 1305. Rotation of preform 1305 (and any necessary precession along the Y-axis) containing conductive element 1310 produces the initial helical structure within preform 1305 prior to drawing. Preform 1305 is then drawn to produce a waveguiding structure 1315 and twisted using a first yoke 1320 and a second yoke 1325 while the material is above its vitreous temperature, s