US Patent Issued to NEC on April 29 for "Optical network management apparatus and method of allocating optical frequency band" (Japanese Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,568, issued on April 29, was assigned to NEC Corp. (Tokyo).

"Optical network management apparatus and method of allocating optical frequency band" was invented by Hitoshi Takeshita (Tokyo), Shinsuke Fujisawa (Tokyo), Tomoyuki Hino (Tokyo) and Akio Tajima (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "It is difficult to improve the usage efficiency of an optical communication network due to the passband narrowing effect in a wavelength selection process in an optical communication network using a wavelength division multiplexing system; therefore, an optical network management apparatus according to an exemplary aspect of the present invention ...