CN113671640B - Tail fiber fixing clamp and fixing method for light emission sub-module - Google Patents
Tail fiber fixing clamp and fixing method for light emission sub-module Download PDFInfo
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- CN113671640B CN113671640B CN202110807765.6A CN202110807765A CN113671640B CN 113671640 B CN113671640 B CN 113671640B CN 202110807765 A CN202110807765 A CN 202110807765A CN 113671640 B CN113671640 B CN 113671640B
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- groove
- tail fiber
- adapter
- crystal head
- fixing clamp
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- 239000000835 fiber Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000013078 crystal Substances 0.000 claims abstract description 50
- 238000005452 bending Methods 0.000 claims abstract description 14
- 239000003292 glue Substances 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims 3
- 230000003287 optical effect Effects 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 3
- 239000013307 optical fiber Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4239—Adhesive bonding; Encapsulation with polymer material
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4256—Details of housings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention belongs to the technical field of optical communication, and particularly relates to a tail fiber fixing clamp of an optical emission sub-module, which comprises a fixing clamp body, wherein a first adapter groove and a tail fiber groove are formed in the top surface of the fixing clamp body, and a crystal head placing table is arranged on the side surface of the fixing clamp body; one end of the tail fiber groove is communicated with the first adapter groove, and the other end of the tail fiber groove extends to the side face; the tail fiber groove is in a bending shape; the invention also provides a tail fiber fixing method, an adapter with a tail fiber is assembled on the tail fiber fixing clamp, then the adapter is integrally reversely buckled on the module shell, so that a crystal head and the adapter are respectively aligned with a crystal head groove and a second adapter groove on the module shell, the crystal head and the adapter are compressed and baked together to solidify glue, and finally the tail fiber fixing clamp is disassembled. The invention can automatically adapt to the length of the tail fiber, and ensure that the tail fiber maintains a fixed curvature after being assembled so as to absorb the tensile force of the tail fiber in the use process, and simultaneously ensure that the fiber is excessively bent, thereby avoiding the optical power drop caused by the excessive bending.
Description
Technical Field
The invention belongs to the technical field of optical communication, and particularly relates to a tail fiber fixing clamp and a tail fiber fixing method of an optical emission sub-module.
Background
With the increasing update of 5G communication technology, the demands on high-speed modules such as 25G, 100G, 200G, 400G and the like in the market are increasing, the competition in the market is also increasing, and the requirements on cost control and reliability of the high-speed modules are also increasing.
FIG. 1 is a schematic diagram of a typical pigtail light emitting sub-module. The device comprises a module shell, a device cavity arranged on the module shell, a laser in the device cavity, a collimating lens, a converging lens, an isolator and an adapter with a tail fiber. As shown in fig. 2, the pigtailed adapter includes a left-hand crystal head, a pigtail, and a right-hand adapter. In general, the adapter for fixing the pigtail is in a mode of naturally straightening or coiling the pigtail, and then the crystal head of the pigtail and the adapter are fixed by glue.
The conventional manner of fixing the pigtail has the following problems:
1. the mode of naturally straightening the tail fiber is adopted, the tail fiber is contracted under the action of tensile stress when the temperature is reduced, and the risk of breaking the tail fiber exists;
2. the mode of naturally straightening the tail fiber is adopted, when the adapter is connected with an external optical fiber, the adapter can slightly shake, the optical fiber can be subjected to the tensile force, and the risk of breaking the tail fiber also exists;
3. the tail fiber is assembled in a fiber coiling mode, and because the space of the fiber coiling is relatively narrow, the fiber can be bent more severely, and the risk of optical power drop caused by overlarge bending radius of the fiber exists.
Therefore, how to control the bending of the pigtail is a technical difficulty in securing the ribbon pigtail adapter. Therefore, it is necessary to design a novel tail fiber fixing clamp and fixing method for the light emitting sub-module to overcome the above-mentioned problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the tail fiber fixing clamp and the fixing method for the light emission sub-module, which can automatically adapt to the length of the tail fiber, ensure that the tail fiber maintains a fixed curvature after being assembled so as to absorb the tensile force of the tail fiber in the use process, ensure that the optical fiber is excessively bent, and avoid the optical power drop caused by excessive bending.
In order to achieve the above purpose, the technical scheme of the invention is that the tail fiber fixing clamp of the light emission sub-module comprises a fixing clamp body, wherein the fixing clamp body is provided with a top surface and a side surface connected with the top surface; the top surface is provided with a first adapter groove for placing an adapter and a tail fiber groove for placing a tail fiber, and the side surface is provided with a crystal head placing table for placing a crystal head; one end of the tail fiber groove is communicated with the first adapter groove, and the other end of the tail fiber groove extends to the side face; the tail fiber groove is in a bending shape.
Further, the bending radius of the tail fiber groove is 5-30mm.
Further, the end part of the tail fiber groove extending to the side surface is positioned right above the crystal head placing table.
Further, along the arrangement direction of the adapters with tail fibers, the first adapter groove is wide in the middle and narrow at two ends.
Further, an end of the first adapter groove facing away from the pigtail groove extends out of the fixing clamp body.
The invention also provides a tail fiber fixing method of the light emission sub-module, which comprises the following steps:
1) A crystal head groove for fixing the crystal head and a second adapter groove for fixing the adapter are formed in the module shell, and glue is dispensed in the crystal head groove and the second adapter groove;
2) Assembling an adapter with a tail fiber on the tail fiber fixing clamp, so that the tail fiber is placed in a tail fiber groove;
3) Reversely buckling a tail fiber fixing clamp provided with an adapter with a tail fiber on a module shell, enabling a crystal head and the adapter to be aligned with a crystal head groove and a second adapter groove respectively, and compacting;
4) Placing the module shell assembled with the adapter with the tail fibers and the tail fiber fixing clamp into an oven to be baked so as to solidify glue;
5) And taking out the product from the oven, and removing the tail fiber fixing clamp.
Further, an end of the crystal head groove adjacent to the second adapter groove is provided with an opening.
Further, the second adapter groove is identical in structure to the first adapter groove.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention designs a groove for fixing the crystal head and the adapter on the module shell, and adopts the fixture to assist in fixing the adapter with the tail fiber, and the crystal head can slide in the groove to adapt to the change of the length of the optical fiber;
(2) The invention designs the bent tail fiber groove on the clamp to place the tail fiber, so that the tail fiber of the adapter with the tail fiber can be ensured to maintain a fixed curvature after being assembled, the tail fiber can be ensured to maintain a certain curvature so as to absorb the tensile force of the tail fiber in the use process, and meanwhile, the excessive bending of the optical fiber can be ensured, and the optical power drop caused by the excessive bending is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an exemplary pigtail-carrying light emission sub-module according to the background of the invention;
FIG. 2 is a schematic diagram of an adapter with pigtail according to the background of the invention;
fig. 3 is a perspective view of a tail fiber fixing clamp of a light emitting sub-module according to an embodiment of the present invention;
fig. 4 is a front view of a tail fiber fixing fixture of a light emitting sub-module according to an embodiment of the present invention;
FIG. 5 is a side view of a fiber optic mounting clip for a light emitting sub-module according to an embodiment of the present invention;
FIG. 6 is a schematic view of an adapter with pigtail according to an embodiment of the present invention assembled to a pigtail fixture;
FIG. 7 is a schematic diagram of an adapter with a pigtail assembled to an optical module together with a pigtail fixture according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an adapter with pigtail mounted on a module housing according to an embodiment of the present invention;
in the figure: 1. an adapter with a pigtail; 11. an adapter; 12. tail fiber; 13. a crystal head; 2. a module housing; 3. a device cavity; 4. a fixing jig body; 41. a first adapter groove; 42. a pigtail groove; 43. a crystal head placing table; 5. a crystal head groove, 6, a second adapter groove; 7. a laser; 8. a collimating lens; 9. a converging lens; 10. an isolator.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 3-6, the present embodiment provides a fiber pigtail fixture of a light emission sub-module, which includes a fixture body 4, wherein the fixture body 4 has a top surface and a side surface connected to the top surface; the top surface is provided with a first adapter groove 41 for placing the adapter 11 and a tail fiber groove 42 for placing the tail fiber 12, and the side surface is provided with a crystal head placing table 43 for placing the crystal head 13; one end of the pigtail groove 42 is communicated with the first adapter groove 41, and the other end extends to the side face; the pigtail groove 42 is curved. In this embodiment, a curved pigtail groove 42 is designed on the fixing clamp body 4, and when the adaptor 1 with pigtail is assembled, the pigtail 12 is pre-fixed by using the pigtail groove 42, so that the pigtail 12 maintains a fixed curvature after being assembled, and the tensile force of the pigtail 12 in the use process is absorbed.
Optimally, the bending radius of the tail fiber groove 42 is 15mm, so that the excessive bending of the optical fiber can be ensured, and the optical power drop caused by the excessive bending can be avoided.
Further, the end of the pigtail groove 42 extending to the side face is located right above the crystal head placing table 43. In this embodiment, after the pigtail 12 is bent and arranged through the pigtail groove 42, the pigtail extends from the side surface and straightens along the crystal head placing table 43, and the crystal head 13 is placed on the crystal head placing table 43, so that the length change of the pigtail 12 can be adapted.
Further, the first adaptor groove 41 is wider at the middle and narrower at the two ends along the arrangement direction of the adaptor 1 with tail fiber. As shown in fig. 3 and 6, the first adaptor groove 41 of the present embodiment is wide at the middle and narrow at both ends, which matches the outer shape of the adaptor 11, and the middle wide portion can position the adaptor 11, ensuring accurate installation of the adaptor 11.
Further, an end of the first adapter groove 41 facing away from the pigtail groove 42 extends out of the fixing jig body 4. As shown in fig. 3, the end of the first adapter groove 41 facing away from the pigtail groove 42 is open to accommodate the adapter 11.
As shown in fig. 3 to 8, the present embodiment further provides a method for fixing a tail fiber of a light emitting sub-module, which includes the following steps:
1) A crystal head groove 5 for fixing a crystal head 13 and a second adapter groove 6 for fixing an adapter 11 are formed in the module shell 2, and black glue is added into the crystal head groove 5 and the second adapter groove 6; as shown in fig. 7, in this embodiment, a crystal head groove 5 for fixing a crystal head 13 and a second adapter groove 6 for fixing an adapter 11 are designed on a module housing 2, wherein the second adapter groove 6 is matched with the external shape of the adapter 11, and is wide in the middle and narrow at two ends so as to accurately position the adapter 11; the end of the crystal head groove 5, which is close to the second adapter groove 6, is provided with an open mouth, so that the crystal head 13 can slide in the crystal head groove 5 to adapt to the change of the length of the optical fiber;
2) The adapter 1 with the tail fiber is assembled on the tail fiber fixing clamp, so that the tail fiber 12 is placed in the corresponding tail fiber groove 42, as shown in fig. 6, and the tail fiber 12 can maintain a certain curvature after being assembled on the module shell 2, so as to absorb the tensile force born by the tail fiber 12 in the use process;
3) Reversely buckling a tail fiber fixing clamp of the adapter 1 with the tail fiber on the module shell 2, enabling the crystal head 13 and the adapter 11 to be aligned with the crystal head groove 5 and the second adapter groove 6 respectively, and compacting; as shown in fig. 7, the adaptor 11 is positioned in the second adaptor groove 6, and the crystal head 13 can partially or completely extend to the crystal head groove 5 according to the length of the tail fiber 12 to adapt to the tail fibers 12 with different lengths;
4) The module shell 2 of the adapter 1 assembled with the tail fibers and the tail fiber fixing clamp are put into an oven to be baked to solidify glue, wherein the baking temperature is 120 ℃ and the baking time is 1h;
5) Taking out the product from the oven and removing the tail fiber fixing clamp as shown in fig. 3; and then proceeds to the next operation.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A tail fiber fixing clamp of a light emission sub-module is characterized in that: the fixing clamp comprises a fixing clamp body, wherein the fixing clamp body is provided with a top surface and a side surface connected with the top surface; the top surface is provided with a first adapter groove for placing an adapter and a tail fiber groove for placing a tail fiber, and the side surface is provided with a crystal head placing table for placing a crystal head; one end of the tail fiber groove is communicated with the first adapter groove, and the other end of the tail fiber groove extends to the side face; the tail fiber groove is in a bending shape; the end part of the tail fiber groove extending to the side surface is positioned right above the crystal head placing table, after the tail fiber is bent and arranged through the tail fiber groove, the tail fiber extends out of the side surface and straightens along the crystal head placing table, and the crystal head is placed on the crystal head placing table, so that the tail fiber length change can be adapted.
2. The pigtail retention clip for a light emitting sub-module of claim 1, wherein: the bending radius of the tail fiber groove is 5-30mm.
3. The pigtail retention clip for a light emitting sub-module of claim 1, wherein: the first adapter groove is wide in the middle and narrow at two ends along the arrangement direction of the adapters with tail fibers.
4. The pigtail retention clip for a light emitting sub-module of claim 1, wherein: one end of the first adapter groove, which is away from the tail fiber groove, extends out of the fixing clamp body.
5. The tail fiber fixing method of the light emission sub-module is characterized by comprising the following steps of:
1) A crystal head groove for fixing the crystal head and a second adapter groove for fixing the adapter are formed in the module shell, and glue is dispensed in the crystal head groove and the second adapter groove;
2) Assembling an adapter with a pigtail onto the pigtail fixture according to any one of claims 1-4, so that the pigtail is placed in the pigtail groove;
3) Reversely buckling a tail fiber fixing clamp provided with an adapter with a tail fiber on a module shell, enabling a crystal head and the adapter to be aligned with a crystal head groove and a second adapter groove respectively, and compacting;
4) Placing the module shell assembled with the adapter with the tail fibers and the tail fiber fixing clamp into an oven to be baked so as to solidify glue;
5) And taking out the product from the oven, and removing the tail fiber fixing clamp.
6. The method for fixing the tail fiber of the light emitting sub-module according to claim 5, wherein: the end of the crystal head groove, which is close to the second adapter groove, is provided with an open mouth.
7. The method for fixing the tail fiber of the light emitting sub-module according to claim 5, wherein: the second adapter groove is identical in structure to the first adapter groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807765.6A CN113671640B (en) | 2021-07-16 | 2021-07-16 | Tail fiber fixing clamp and fixing method for light emission sub-module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807765.6A CN113671640B (en) | 2021-07-16 | 2021-07-16 | Tail fiber fixing clamp and fixing method for light emission sub-module |
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| Publication Number | Publication Date |
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| CN113671640A CN113671640A (en) | 2021-11-19 |
| CN113671640B true CN113671640B (en) | 2023-04-28 |
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| CN202110807765.6A Active CN113671640B (en) | 2021-07-16 | 2021-07-16 | Tail fiber fixing clamp and fixing method for light emission sub-module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201628783U (en) * | 2009-12-31 | 2010-11-10 | 武汉优信光通信设备有限责任公司 | Tail-fiber type optical sub-module |
| CN109116482A (en) * | 2018-09-29 | 2019-01-01 | 深圳市亚派光电器件有限公司 | Four-way optical module |
| CN111913258A (en) * | 2019-05-09 | 2020-11-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102047163A (en) * | 2008-05-30 | 2011-05-04 | 康宁股份有限公司 | Fiber assembly employing photonic band-gap optical fiber |
| CN206470440U (en) * | 2014-07-11 | 2017-09-05 | 古河电气工业株式会社 | Bending fiber built-in connector |
| US9715071B1 (en) * | 2016-09-12 | 2017-07-25 | Yottahn, Inc. | Bending type optical module and method of manufacturing the same |
| US10012808B2 (en) * | 2016-12-01 | 2018-07-03 | Cyntec Co., Ltd. | Optical fiber strip, active optical module and active optical cable |
| CN111045147B (en) * | 2019-11-29 | 2021-08-06 | 武汉英飞光创科技有限公司 | AWG assembly fixing structure and method of optical module |
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2021
- 2021-07-16 CN CN202110807765.6A patent/CN113671640B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201628783U (en) * | 2009-12-31 | 2010-11-10 | 武汉优信光通信设备有限责任公司 | Tail-fiber type optical sub-module |
| CN109116482A (en) * | 2018-09-29 | 2019-01-01 | 深圳市亚派光电器件有限公司 | Four-way optical module |
| CN111913258A (en) * | 2019-05-09 | 2020-11-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| CN113671640A (en) | 2021-11-19 |
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