ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,877, issued on March 11, was assigned to FiSensGmbh (Braunschweig, Germany).

"Device for optical applications" was invented by Christian Waltermann (Goslar, Germany), Philip Erik Guhlke (Berlin), Jan Koch (Goslar, Germany) and Wolfgang Schippers (Braunschweig, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a device for optical applications, which has an optical waveguide (10), to which a light source (11) can be connected. The optical waveguide (10) is designed in such a way that light emitted by the connectable light source (11) propagates along a light propagation axis (12). A wavelength-sensitive grating structur...