US Patent Issued to NTT on Feb. 17 for "Equipment and method for measuring loss and crosstalk that occur in optical fiber transmission line" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,793, issued on Feb. 17, was assigned to NTT Inc. (Tokyo).

"Equipment and method for measuring loss and crosstalk that occur in optical fiber transmission line" was invented by Tomokazu Oda (Musashino, Japan), Atsushi Nakamura (Musashino, Japan) and Yusuke Koshikiya (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure includes a light injecting unit that injects a frequency-swept probe light into one end of an optical fiber targeted for measurement, injects a pump light into the other end of the optical fiber targeted for measurement, with respect to the probe light, and thereby amplifies the probe light in the opti...