| 摘要 |
An apparatus and associated method for altering the propagation constant of a region of changeable propagation constant (190) in an optical waveguide (106). The method comprises positioning an electrode (120) of a prescribed electrode shape proximate the waveguide (106). An altered region of changeable propagation constant (190) is projected into the waveguides (106) that correspond, in shape, to the prescribed electrode shape by applying a voltage (202) to the shaped electrode (120). The propagation constant of the region of changeable propagation constant (190) is controlled by varying the voltage (202). |
