ALEXANDRIA, Va., April 7 -- United States Patent no. 12,596,224, issued on April 7.
"Multi-clad optical fibers" was invented by Saurabh Kapoor (Gurugram, India), Ranjith Balakrishnan (Gurugram, India) and Anand Pandey (Gurugram, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an optical fiber (100, 200, 300, 400) comprising one or more cores (102), a clad enveloping the one or more cores and a buffer clad layer (202, 302, 402) between the first clad layer and the second clad layer. Particularly, the clad includes a first clad layer (104) is made of silica with less than 0.1% metallic impurity and a second clad layer (106) is made of silica with greater than 0.1% of metal...