Tunable Bulk Polymer Planar Bragg Gratings Electrified via Femtosecond Laser Reductive Sintering of CuO Nanoparticles

Abstract This contribution demonstrates and discusses electrically tunable polymer planar Bragg gratings based on bulk cyclic olefin copolymers. A lithographic single‐writing‐step method femtosecond laser reductive sintering of copper(II) oxide nanoparticles are subsequently employed in order to generate buried photonic structures copper conducting paths top the substrate. way, necessary number process steps for fabricating a polymer‐based electro‐optical device is greatly reduced. The response fully electrified grating structure follows temperature changes, induced by path, with sensitivities up −31 pm K −1 . Dilatometric measurements show that specimen's behavior correlated situationally reduced thermal expansion In consequence, tuning platform second polynomial, whereas direct current 30 mA, which correlates power consumption 18.3 mW, leads local increase residual wavelength shift 19.6 −547 pm, respectively. Moreover, outstanding flexibility proposed fabrication concept underlined demonstrating alternative path geometries, one additional designs adapted control spectral width grating's reflection peak.