CN212335021U - Octagonal connector for optical fiber perform wire drawing - Google Patents
Octagonal connector for optical fiber perform wire drawing Download PDFInfo
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- CN212335021U CN212335021U CN202022085999.8U CN202022085999U CN212335021U CN 212335021 U CN212335021 U CN 212335021U CN 202022085999 U CN202022085999 U CN 202022085999U CN 212335021 U CN212335021 U CN 212335021U
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- optical fiber
- octagonal
- hole groove
- connector
- fiber perform
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Abstract
The utility model relates to a connector is used in octagonal optical fiber perform wire drawing, connector have a regular octagon hole groove for connect octagonal optical fiber perform, have a circular hole groove in addition and be used for the joint support stick. In the preform rod connecting process, the optical fiber preform rod processed into an octagonal shape is embedded into the octagonal hole groove at the front end, and the support rods are embedded into the circular hole groove to be sintered and connected on oxyhydrogen flame. The technical effect is that higher collimation degree has between two excellent, has reduced and has mixed ytterbium optical fiber perform eccentricity, reduces original technology and causes the prefabricated stick and supports the bubble that exists between excellent gap, is favorable to increasing the effective wire drawing length of optical fiber perform, has reduced because the optic fibre that the coating deviation leads to is scrapped the problem, promotes single prefabricated stick's optical fiber yield greatly.
Description
Technical Field
The utility model relates to an optical fiber perform preparation especially relates to an octagonal connector for optical fiber perform wire drawing.
Background
When the optical fiber perform advances to the wire drawing technology link, in order to utilize the perform to carry out the wire drawing to furthest, it is fixed to use the chuck simultaneously, needs to carry out the butt fusion extension with optical fiber perform and support stick. The support rod is made of pure quartz materials, and when the support rod is subjected to high-temperature fusion welding with the optical fiber perform, the support rod is slightly extruded to the fusion welding position, and the support rod can be fixed at one end of the perform. Because ytterbium doped fiber perform is the octagon, and the support stick generally chooses cylindrical pure quartz stick for use, and both geometric shape have certain size difference, consequently can produce the deviation when butt fusion perform, make perform can not be in same straight line with the support stick completely, influence the optical fiber geometry after the drawing. In addition, in the fusion process of the preform and the support rod, air is easily mixed into a gap between the two rods due to extrusion at the fusion joint, so that micro bubbles can be formed in the preform, and the mechanical strength and the light permeability during the drawing of the optical fiber are affected.
Disclosure of Invention
In view of the problem that prior art exists, the utility model provides an octagonal connector for optical fiber perform wire drawing can promote optical fiber perform rate of utilization, simplifies and connects excellent technology link, reduces the eccentric error of optic fibre.
The utility model adopts the technical proposal that: the utility model provides a connector for octagonal optical fiber perform wire drawing, includes the connector, its characterized in that: the connector is a quartz cylinder with the diameter of 34mm and the length of 7-8 cm, the two ends of the cylinder are respectively provided with a regular octagonal hole groove and a circular hole groove, the depth of the regular octagonal hole groove is 3cm, the diameter of an inscribed circle is larger than the diameter of an inscribed circle of the octagonal optical fiber perform rod by 0.05-0.15 mm, the depth of the circular hole groove is 2cm, and the diameter of the inscribed circle is larger than the outer diameter of the support rod by 0.05-0.15 mm.
The utility model discloses the beneficial effect who gains does, has promoted optical fiber perform and has supported excellent butt fusion degree of collimation, has increased perform and the firm degree of support excellent butt fusion, has avoided the microbubble that produces in the butt fusion in-process. On the other hand, reduced the excellent technology degree of difficulty of connecing, promoted operating efficiency, the optic fibre of drawing can keep intact geometric structure, and the optical fiber cladding has better concentricity with the coating, has reduced because the optic fibre that the coating deviation leads to is scrapped the problem, promotes single prefabricated excellent's optic fibre yield greatly, has reduced prefabricated excellent length loss.
Drawings
FIG. 1 is a sectional view of the structure of the present invention;
figure 2 is the utility model discloses connect prefabricated stick and support stick sketch map.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
Example one
As shown in fig. 1, a connector for drawing an octagonal optical fiber preform with an inscribed circle diameter of 28 mm, wherein the connector 1 is a quartz cylinder with a diameter of 34mm and a length of 7 cm, two ends of the cylinder are respectively provided with a regular octagonal hole groove 1-1 and a circular hole groove 1-2, the groove depth of the regular octagonal hole groove 1-1 is 3cm, the diameter of the inscribed circle is 28.1mm, and the groove depth of the circular hole groove 1-2 is 2cm, and the diameter of the inner circle is 28.1 mm.
As shown in fig. 2, the connection method is,
firstly, inserting one end of a support rod 3 into a circular hole groove 1-2 of a connector 1, fixing the other end of the support rod in a rotary chuck of an MCVD lathe, rotating the chuck at a constant speed, heating a joint area of the support rod and the connector (1) to a molten state by using oxyhydrogen flame on the MCVD lathe until the support rod and the connector are melted into a whole, and cooling to room temperature after the welding is completed.
And secondly, aligning and inserting the tail end of the optical fiber preform 2 into the octagonal hole groove 1-1 of the connector 1, rotating the chuck, heating the connection area to a molten state by oxyhydrogen flame, and cooling at room temperature after welding to complete the connection of the optical fiber preform 2 and the support rod 3.
The benefits are as follows:
the prefabricated stick passes through the connector butt joint with the support stick, has higher collimation degree between two sticks. With supporting rod vertical fixation on wire drawing tower anchor clamps, prefabricated stick can remain stable vertical state during the drawing optic fibre, therefore the optic fibre of drawing can keep intact geometric structure, and the optical fiber cladding has better concentricity with the coating, has reduced because the optic fibre that the coating deviation leads to is scrapped the problem, promotes single prefabricated stick's optical fiber yield greatly. Meanwhile, the rod connecting process details are simplified, and the time consumption of the preform rod straightening process is reduced. The time consumption of the rod connecting process is reduced from 25 minutes to 10 minutes, and the process efficiency is improved.
Specifically, the concentricity deviation of the optical fiber is improved, and the qualification rate of the 20/400 type ytterbium-doped optical fiber is improved from 60% to 100% and the qualification rate of the 50/400 type ytterbium-doped optical fiber is improved from 40% to 90% by taking the concentricity deviation smaller than 1.5 mu m as a standard. The test data is shown in table one.
Watch 1
Claims (1)
1. A connector for drawing an octagonal optical fiber preform comprises a connector (1) and is characterized in that: the connector (1) is a quartz cylinder with the diameter of 34mm and the length of 7-8 cm, a regular octagonal hole groove (1-1) and a circular hole groove (1-2) are respectively arranged at two ends of the cylinder, the groove depth of the regular octagonal hole groove (1-1) is 3cm, the diameter of an inscribed circle is larger than the diameter of an inscribed circle of the octagonal optical fiber preform by 0.05-0.15 mm, and the groove depth of the circular hole groove (1-2) is 2cm, and the diameter of the inscribed circle is larger than the outer diameter of the support rod by 0.05-0.15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022085999.8U CN212335021U (en) | 2020-09-22 | 2020-09-22 | Octagonal connector for optical fiber perform wire drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022085999.8U CN212335021U (en) | 2020-09-22 | 2020-09-22 | Octagonal connector for optical fiber perform wire drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212335021U true CN212335021U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022085999.8U Active CN212335021U (en) | 2020-09-22 | 2020-09-22 | Octagonal connector for optical fiber perform wire drawing |
Country Status (1)
| Country | Link |
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| CN (1) | CN212335021U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047620A (en) * | 2020-09-22 | 2020-12-08 | 中国电子科技集团公司第四十六研究所 | Connector for drawing octagonal optical fiber preform and connecting method |
| CN115072987A (en) * | 2022-08-22 | 2022-09-20 | 中国电子科技集团公司第四十六研究所 | Preparation method of active optical fiber with octagonal inner cladding structure |
-
2020
- 2020-09-22 CN CN202022085999.8U patent/CN212335021U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047620A (en) * | 2020-09-22 | 2020-12-08 | 中国电子科技集团公司第四十六研究所 | Connector for drawing octagonal optical fiber preform and connecting method |
| CN115072987A (en) * | 2022-08-22 | 2022-09-20 | 中国电子科技集团公司第四十六研究所 | Preparation method of active optical fiber with octagonal inner cladding structure |
| CN115072987B (en) * | 2022-08-22 | 2023-01-03 | 中国电子科技集团公司第四十六研究所 | Preparation method of active optical fiber with octagonal inner cladding structure |
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