US Patent Issued to NTT on May 12 for "Device, method and system for calculating power coupling coefficients between cores" (Japanese Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,625,031, issued on May 12, was assigned to NTT Inc. (Tokyo).

"Device, method and system for calculating power coupling coefficients between cores" was invented by Atsushi Nakamura (Musashino, Japan), Yusuke Koshikiya (Musashino, Japan) and Nazuki Honda (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device according to the present disclosure: acquires a group delay time difference between eigenmodes, at a specific wavelength, in a coupled two-core fiber; acquires spatial mode dispersion between the eigenmodes, at the specific wavelength, in the coupled two-core fiber; and calculates an average power coupling coefficient between cores, ...