US Patent Issued to NTT on Nov. 3 for "Process for manufacturing single-crystal fiber" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,390, issued on Nov. 3, was assigned to NTT Inc. (Tokyo).

"Process for manufacturing single-crystal fiber" was invented by Shigeo Ishibashi (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a method for manufacturing a Nd:YAG single crystal fiber exhibiting a radial concentration distribution where the Nd concentration reaches a maximum at a central axis of the single crystal fiber. The method for manufacturing a Nd:YAG single crystal fiber according to the present disclosure involves: preparing a source material having a rod shape and containing a YAG single crystal or polycrystal, Nd, and Ca; melting an...