The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2026
Filed:
Mar. 17, 2023
Applicant:
Sterlite Technologies Limited, Gurugram, IN;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/036 (2006.01); G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
G02B 6/03694 (2013.01); G02B 6/02042 (2013.01); G02B 6/02338 (2013.01);
Abstract
The present invention relates to an optical fiber () comprising one or more cores (), a clad enveloping the one or more cores and a buffer clad layer () between the first clad layer and the second clad layer. Particularly, the clad includes a first clad layer () is made of silica with less than 0.1% metallic impurity and a second clad layer () is made of silica with greater than 0.1% of metallic impurity. Further, the first clad layer has less than 800 ppm OH content, less than 10 ppm aluminium and less than 2 ppm sodium and the second clad layer has less than 50 ppm OH content, more than 10 ppm aluminium and more than 2 ppm sodium.