US 11,733,459 B2
Method for modification of surface of optical fiber preform
Pramod Watekar, Aurangabad (IN); Annesha Maity, Aurangabad (IN); Manoj Mittal, Aurangabad (IN); Sandeep Gaikwad, Aurangabad (IN); Sham Nagarkar, Aurangabad (IN); Bhalchandra Pathak, Aurangabad (IN); and Sathis Ram, Aurangabad (IN)
Filed by Sterlite Technologies Limited, Aurangabad (IN)
Filed on Feb. 26, 2019, as Appl. No. 16/286,556.
Claims priority of application No. 201821050052 (IN), filed on Dec. 31, 2018.
Prior Publication US 2020/0209475 A1, Jul. 2, 2020
Int. Cl. C03B 37/014 (2006.01); G02B 6/13 (2006.01); G02B 6/02 (2006.01); C03B 19/14 (2006.01); C03B 29/00 (2006.01); C03C 25/002 (2018.01); C03C 25/64 (2006.01); G02B 6/12 (2006.01)
CPC G02B 6/13 (2013.01) [C03B 19/1453 (2013.01); C03B 29/00 (2013.01); C03B 37/01446 (2013.01); C03C 25/002 (2013.01); C03C 25/64 (2013.01); G02B 6/02052 (2013.01); G02B 6/02319 (2013.01); G02B 6/02342 (2013.01); G02B 2006/12197 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for modification of surface of an initial optical fiber preform, the method comprising:
treating the surface of the initial optical fiber preform with chlorine, wherein the surface of the initial optical fiber preform is treated with chlorine for modification of structure of silica cladding of the initial optical fiber preform by removing impure particles from the initial optical fiber preform; and
performing flame polishing on the surface of the initial optical fiber preform subsequently after chlorination, wherein the flame polishing is performed to convert the initial optical fiber preform into a modified optical fiber preform.