US Patent Issued to SUMITOMO ELECTRIC INDUSTRIES on Aug. 11 for "Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,672, issued on Aug. 11, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method" was invented by Tetsuya Hayashi (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polarization-maintaining optical fiber includes at least one polarization maintaining core, a first cladding surrounding the at least one polarization maintaining core, and a second cladding surrounding the first cladding. The at least one polarization maintaining core includes a core and a pair of low-refractive-index portions each having a refractive index lower ...