公开(公告)号：US20210047224A1

公开(公告)日：2021-02-18

申请号：US16849848

申请日：2020-04-15

Applicant: Sterlite Technologies Limited

Inventor： Subhanshu Aggarwal ,  Chitra D ,  Janarthanan Balakrishnan ,  Hima Harode

IPC: C03B37/012

Abstract: The present disclosure provides a method for sintering of an optical fiber preform. The method includes preheating of the optical fiber preform in a sintering chamber. In addition, the method includes first downfeeding of the optical fiber preform into a sintering furnace in the presence of helium gas and chlorine gas. The first downfeeding of the optical fiber preform facilitates sintering of an outer layer of the optical fiber preform. Further, the method includes pulling out the optical fiber preform from the sintering furnace in presence of chlorine gas and at least one of nitrogen gas and helium gas. Further, the method includes second down feeding of the optical fiber preform in the sintering furnace in the presence of nitrogen gas and chlorine gas. The second downfeeding of the optical fiber preform facilitates sintering of the optical fiber preform.

公开(公告)号：US20210070647A1

公开(公告)日：2021-03-11

申请号：US16993209

申请日：2020-08-13

Applicant: Sterlite Technologies Limited

Inventor： Hima Harode ,  Rahul Prasad ,  Shubhanshu Agarwal

IPC: C03B37/012

Abstract: The present disclosure provides a method for sintering of an optical fibre preform. The method includes manufacturing of the optical fibre preform. In addition, the method includes drying and sintering of the optical fibre preform. In addition, drying and sintering of the optical fibre preform results into a sintered optical fibre preform. Further, the method includes preparation of a glass rod from the sintered optical fibre preform. Furthermore, the method includes insertion of the glass rod into a centreline hole of the silica soot preform. The centreline hole is created by removing mandrel from the silica soot preform. Moreover, the method includes drying and sintering of the silica soot preform. Also, drying and sintering of the silica soot results into a sintered silica soot preform. Also, the method includes drawing of a rod from the sintered silica soot preform.

公开(公告)号：US11634351B2

公开(公告)日：2023-04-25

申请号：US16993209

申请日：2020-08-13

Applicant: Sterlite Technologies Limited

Inventor： Hima Harode ,  Rahul Prasad ,  Shubhanshu Agarwal

IPC: C03B37/012

Abstract: The present disclosure provides a method for sintering of an optical fibre preform. The method includes manufacturing of the optical fibre preform. In addition, the method includes drying and sintering of the optical fibre preform. In addition, drying and sintering of the optical fibre preform results into a sintered optical fibre preform. Further, the method includes preparation of a glass rod from the sintered optical fibre preform. Furthermore, the method includes insertion of the glass rod into a centreline hole of the silica soot preform. The centreline hole is created by removing mandrel from the silica soot preform. Moreover, the method includes drying and sintering of the silica soot preform. Also, drying and sintering of the silica soot results into a sintered silica soot preform. Also, the method includes drawing of a rod from the sintered silica soot preform.