ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,438,332, issued on Oct. 7, was assigned to Fujikura Ltd. (Tokyo).
"Laser device" was invented by Takashi Hasunuma (Sakura, Japan), Shinichi Sakamoto (Sakura, Japan), Yasuto Chiba (Sakura, Japan), Wataru Kiyoyama (Sakura, Japan) and Yutaka Yamaguchi (Sakura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser device includes at least one light source; a delivery fiber configured to propagate laser light launched from the light source; a monitor fiber optically coupled to the delivery fiber and configured to propagate a part of the light propagating in a direction opposite to a propagation direction of the laser light in the delivery fiber, and a ...