ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,782, issued on March 24, was assigned to Shin-Etsu Chemical Co. Ltd. (Tokyo).
"Optical fiber preform" was invented by Yuhei Urata (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an optical fiber with improved optical properties such as zero dispersion wavelength by suppressing the volatilization of dopant materials such as germanium dioxide and optimizing the refractive index distribution by adjusting the setting position of the core portion burner for deposition in a larger optical fiber preform. An optical fiber preform includes a core portion with a relatively high refractive index and a clad portion...