ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,510, issued on April 21, was assigned to ANRITSU Corp. (Kanagawa, Japan).
"Optical spectrum analyzer" was invented by Maki Ueno (Kanagawa, Japan), Shinji Morimoto (Kanagawa, Japan) and Hajime Yoshino (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an optical spectrum analyzer capable of stably measuring a spectrum of pulsed light while suppressing a decrease in a sweep speed. An A/D conversion unit 17 has a plurality of inputs to which the outputs of a plurality of amplifiers Amp21 to Amp2m are connected. A control unit 12 selects one of the plurality of amplifiers Amp21 to Amp2m whose output is not saturated based on op...