US Patent Issued to VIAVI SOLUTIONS on Dec. 16 for "Elimination of optical ghosts in optical spectral analyzers through a scanning spectral filter" (Canadian, Portuguese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,268, issued on Dec. 16, was assigned to VIAVI SOLUTIONS INC. (Chandler, Ariz.).

"Elimination of optical ghosts in optical spectral analyzers through a scanning spectral filter" was invented by Driss Touahri (Nepean, Canada) and Luis Andre Neves Paiva Fernandes (Maia, Portugal).

According to the abstract* released by the U.S. Patent & Trademark Office: "A monochromator apparatus in a grating-based optical spectrum analyzer (OSA) includes a diffraction grating, a reflector element, and a tunable spectral filter. The tunable spectral filter may include a band-pass filter, a low-pass filter, a high-pass filter, or a linear variable filter, for example. A spectral window of the filter...