Prefabricated fiber rod with several clad layers and its fabrication

A technology of an optical fiber preform and a manufacturing method, which is applied in the field of optical fiber manufacturing, can solve the problems of high optical fiber manufacturing cost, high proportion of high-purity raw materials, and high proportion of optical fiber manufacturing cost, and achieves the effect of reducing raw material cost and manufacturing cost.

Inactive Publication Date: 2003-02-26
YANGTZE OPTICAL FIBRE & CABLE CO LTD
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-clad optical fiber preform and its manufacturing method, which solves the problem that in the existing optical fiber manufacturing technology, the proportion of high-purity raw materials used in the outer cladding of the optical fiber preform is too large, resulting in high-purity raw materials Accounting for an excessively high proportion of the manufacturing cost of optical fiber, making the manufacturing cost of optical fiber high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Prefabricated fiber rod with several clad layers and its fabrication
  • Prefabricated fiber rod with several clad layers and its fabrication
  • Prefabricated fiber rod with several clad layers and its fabrication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] The ratio of the outer diameter B of the inner cladding layer b to the outer diameter A of the core layer a is 1.0;

[0049] The ratio of the outer diameter C of the low-hydroxyl high-purity cladding c to the outer diameter A of the core layer a is 2.0;

[0050] The ratio of the outer diameter D of the high-purity outer cladding layer d to the outer diameter A of the core layer a is 5.0;

[0051] The ratio of the outer diameter E of the sub-high purity outer cladding layer e to the outer diameter A of the core layer a is 13.5;

[0052] Among them, the high-purity outer cladding d is made of high-purity SiCl with a content of 99.99% 4 Prepared, the sub-high purity outer cladding e is made of SiCl with a content of 99.9% 4 It is prepared, and the outer diameter E of the sub-high purity outer cladding e is 60mm.

[0053] The present invention adopts following implementation mode to be preferred implementation mode:

[0054] The ratio of the outer diameter B of the inne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A multiclad layer optical fiber prefabricated rod includes core rod and outer clad layer; the core rod consists of core layer, inner clad layer and low-hydroxyl high-purity clad layer in sequence, and the outer clad layer includes a high-purity outer clad layer and a subhigh-purity outer clad layer. The fabrication process includes the successive steps of: making the core rod; the outside-pipe deposition of making high-purity outer clad layer on the surface of the core rod by using 99.99-99.999 % purity SiCl4 material to produce the prefabricated rod; and further making high-purity outer clad layer on the outer surface of the prefabricatd rod with 99-99.99% purity SiCl4 material by the same technological process. The present invention has low material cost, improved fiber performance, raised core rod making efficiency and capacity.

Description

technical field [0001] The invention relates to an optical fiber preform rod and a manufacturing method in the field of optical fiber manufacturing, in particular to a multi-clad optical fiber preform rod and a manufacturing method which are composed of several layers of quartz materials with slightly different purities and can be used for drawing silica optical fibers. technical background [0002] At present, the method for manufacturing commercial silica optical fiber preforms in the world is mainly chemical vapor deposition; wherein, typical manufacturing methods are OVD (outside vapor-phase deposition) technology and VAD (vapor-phase deposition) technology introduced in U.S. Pat. 3932162. axial deposition) process, the PCVD (plasma active chemical vapor-phase deposition) process described in Chinese patent 98813827.1 and the MCVD (modified chemical vapor-phase deposition) process as described in U.S. Patent U.S. Pat. 4217027. With the continuous...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C03B20/00C03B37/012C03B37/014G02B6/00
CPCC03B2203/23C03B37/01413
Inventor 何珍宝童维军
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap