Topological optimization of electrically tunable silicon-organic metasurfaces

Rubio-Noriega R.E.; Soria-Pinedo F.; Clemente-Arenas M.; Urbina J.V.; Lakhtakia A.; Hernandez-Figueroa H.E. · Proceedings of SPIE - The International Society for Optical Engineering (2024) · DOI: 10.1117/12.3005180

Resumen

We present a non-intuitive but still practically implementable silicon meta-atom with strong electrical tunability. We used topological optimization on a 20×20-variable silicon-on-insulator grid and achieved tunability by using JRD1, a stable electrooptic polymer. The electric potential is applied on two ITO electrodes, and a peak shift of 0.6 nm V-1 is achieved in the optical communication E and S bands. The proposed device can be regarded as a demultiplexer or channel selector on a coarse wavelength-division-multiplexing system, with an extinction ratio between adjacent channels of ∼14 dB.

Instituciones: Universidad Nacional de Ingeniería; Universidad Nacional Tecnológica de Lima Sur