ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,388, issued on Dec. 2.
"Optical band-pass filter with blocked sidebands" was invented by Daniel Segura Garcia (Barcelona, Spain), David Cardador Maza (Barcelona, Spain) and Jordi Llorca Pique (Barcelona, Spain).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention proposes an optical band-pass filter with blocked sidebands. The filter comprises a photonic crystal structure based on macroporous silicon having a series of pores defined in the structure. The photonic crystal structure includes a resonator block (BR), comprising at least two periodicity groups (GR1, GR2) between which there is a resonant cavity (CR), wherein the resonant ca...