A multilayer capacitor includes a unitary, net-shape molded dielectric ceramic body having first and second cavities molded into at least one side to divide the ceramic body into a plurality of ceramic layers disposed generally parallel to the top. In some examples, the electrode combinations of the set are arranged in the predetermined order such that adjacent electrode combinations in the order include at least one shared anode electrode or cathode electrode. The apparatus also includes a power storage element that stores at least a portion of the DC delivered from the converter elements. A combination of these two doped-fibers along with optical spectral filtering provides a broadband spectrum giving coherence length <7 \u03bcm, which is well suited for optical coherence imaging.