Title:
SINTERING DEVICE AND SINTERING METHOD FOR OPTICAL FIBER PREFORM SOOT BODY
Document Type and Number:
WIPO Patent Application WO/2021/184713
Kind Code:
A1
Abstract:
The present application relates to a sintering device and a sintering method for an optical fiber preform soot body. The sintering device comprises a sintering box, a furnace core tube, a heating assembly, a lead rod, a preform feeding mechanism, a first pipe group, and a second pipe group. The furnace core tube and the heating assembly are arranged in the sintering box, the heating assembly forming a heating zone. The lead rod extends into the furnace core tube and is used to connect a preform soot body. The preform feeding mechanism is connected to the lead rod to drive the lead rod to move so that the preform soot body is heated in the heating zone. The first pipe group runs through the walls of the sintering box and the furnace core tube and communicates with an inner cavity of the furnace core tube, and comprises a first intake pipe and a first exhaust pipe. The second pipe group runs through the wall of the sintering box and communicates with an internal cavity of the sintering box, and comprises a second intake pipe and a second exhaust pipe. The present application integrates dehydroxylation, vitrification sintering, and deuteration, and can effectively eliminate a residual gas inside an optical fiber preform, reduce the amount of He used, and eliminate structural defects from the source of optical fiber preform manufacturing, thereby reducing the hydrogen sensitivity of an optical fiber.
Inventors:
CUI DONGMING (CN)
KONG MING (CN)
WU SHUJIAN (CN)
KONG MING (CN)
WU SHUJIAN (CN)
Application Number:
PCT/CN2020/115863
Publication Date:
September 23, 2021
Filing Date:
September 17, 2020
Export Citation:
Assignee:
FIBERHOME TELECOMMUNICATION TECH CO LTD (CN)
WUHAN FIBERHOME RUITUO TECH CO LTD (CN)
WUHAN FIBERHOME RUITUO TECH CO LTD (CN)
International Classes:
C03B37/014
Foreign References:
| CN111423106A | 2020-07-17 | |||
| CN107540209A | 2018-01-05 | |||
| CN101781087A | 2010-07-21 | |||
| CN105669019A | 2016-06-15 | |||
| CN109502962A | 2019-03-22 |
Attorney, Agent or Firm:
WUHAN ZHIQUAN PATENT AGENT, LLP. (CN)
Download PDF:
Previous Patent: SOFTWARE UPGRADING METHOD AND DEVICE
Next Patent: PRE-LOAD TECHNIQUES FOR IMPROVED SEQUENTIAL MEMORY ACCESS IN A MEMORY DEVICE
Next Patent: PRE-LOAD TECHNIQUES FOR IMPROVED SEQUENTIAL MEMORY ACCESS IN A MEMORY DEVICE