CN101777723A - High-power optical fiber side pumping coupler and manufacture method thereof - Google Patents
High-power optical fiber side pumping coupler and manufacture method thereof Download PDFInfo
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- CN101777723A CN101777723A CN201010103239A CN201010103239A CN101777723A CN 101777723 A CN101777723 A CN 101777723A CN 201010103239 A CN201010103239 A CN 201010103239A CN 201010103239 A CN201010103239 A CN 201010103239A CN 101777723 A CN101777723 A CN 101777723A
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Abstract
The invention relates to a high-power optical fiber side pumping coupler and a manufacture method thereof. The high-power optical fiber side pumping coupler comprises a double-cladding optical fiber and a multimode optical fiber or a plurality of multimode optical fibers, wherein the multimode optical fiber is a pumping input optical fiber. Firstly, one end of the pumping input optical fiber is pulled into a taper shape, then is spirally wounded on the side surface of the inner cladding of the double-cladding optical fiber and is only directly fused into a whole together with the inner cladding. In the invention, a pumping coupling system is formed without adding other optical components; and the pumping coupling system has simple structure, good reliability, small insertion loss and high coupling efficiency, thereby being suitable for high-power optical fiber lasers or optical fiber amplifiers.
Description
Technical field
The present invention relates to the pumped fiber technical field, relate in particular to a kind of high-power double cladding optical fiber side pumping coupler and preparation method thereof.
Background technology
In recent years, high-capacity optical fiber laser and fiber amplifier had become international research focus, and it has wide application prospect in fields such as laser processing, national defense and military, laser medicine, telecommunication.
In high-capacity optical fiber laser and fiber amplifier, key technology is exactly how the pumping laser power-efficient of tens watts even hundreds of watts to be coupled in the doubly clad optical fiber inner cladding that diameter has only hundreds of microns, therefore needs a kind of high-power fiber pumping coupler to achieve this end.Currently used pumping coupling technique mainly contains two kinds of end pumping and profile pumps.End pumping is because face area limits, and the efficient that pump light incides in the optical fiber inner cladding is lower, is not suitable for making high power laser.People adopt the optical fiber side-pumping coupling technique more, open V-shaped groove, implant microprism (as Fig. 1) etc. as angle grinding and polishing optical fiber gummed method, inner cladding.These method technologies are loaded down with trivial details, and it is fine to do manual work, and are difficult for making the also inaccessible requirement of product stability and tolerance.Domestic in recent years have a kind of multimode fiber pyrometric cone profile pump Study on Technology, and its obvious superiority is arranged, but because manufacture difficulty is big, does not still have the technology and the product of maturation, grasps the also few of this technology abroad, and technology holds in close confidence.
Summary of the invention
The present invention aims to provide a kind of high-power optical fiber side pumping coupler and preparation method thereof, and problems such as poor reliability, the coupling loss that solves side pump technology existence commonly used is big, inconvenience production are to satisfy high power fiber laser and amplifier needs.
The present invention is realized by the following technical programs: a kind of high-power optical fiber side pumping coupler, comprise metal tube, quartz cell, a doubly clad optical fiber and one or more pumping optical fiber, the optical fiber position that intercouples places quartz cell, and in quartz cell is packaged in metal tube.Described pumping optical fiber is one or more multimode fiber, and pumping optical fiber one end pulls into taper rear screw formula and is wound in doubly clad optical fiber inner cladding side, and only with the direct fusion one of the inner cladding of doubly clad optical fiber, and molten and and the damage doubly clad optical fiber fibre core.
The manufacture method of high-power optical fiber side pumping coupler is:
(1) at first the overlay of pumping optical fiber one end is peeled off, and at high temperature pulled into taper;
(2) doubly clad optical fiber is placed optical fiber draw on two chucks of awl machine, and the surrounding layer of its coupling part is peelled off, then the spiral inner cladding side that is wound in the doubly clad optical fiber coupling part of the pumping optical fiber conoid end that step (1) is prepared;
(3) the doubly clad optical fiber coupling part that is tied with pumping optical fiber is carried out heating and melting, carry out optical power monitoring simultaneously, when the pump light coupling efficiency is the highest, then stop heating and melting;
(4) the optical fiber coupling part is placed quartz cell, and be packaged in the metal tube.
The invention has the beneficial effects as follows that pumping optical fiber one end is pulled into taper and the spiral inner cladding that is wound in doubly clad optical fiber carries out direct fusion one, so not only can need not to add other optical element, optical cement, reduce and insert loss, and can improve the stability and the reliability of product.In addition, the pumping optical fiber spiral is wound in the inner cladding side of doubly clad optical fiber and carries out fusion, doubly clad optical fiber can be than large tracts of land or many places and pumping optical fiber welding coupling, because the efficient of side coupling depends primarily on the cross section of doubly clad optical fiber and multimode fiber and contacts, result of the test shows that coupling efficiency of the present invention can reach more than 93% even up to 95%.
It is simple that the present invention also has coupled structure, the characteristics that technology is easy to implement.
Description of drawings
Fig. 1 is that microprism is implanted the profile pump schematic diagram;
Fig. 2 is the schematic diagram that pumping optical fiber one end spiral twines doubly clad optical fiber inner cladding side in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Select one 105/125 μ m multimode fiber and one 5/130/250 μ m doubly clad optical fiber, wherein multimode fiber is as the pumping input optical fibre.At first the overlay of an end of multimode fiber (about 30mm is long) is peeled off, and at high temperature pulled into taper; Place optical fiber to draw on two chucks of awl machine doubly clad optical fiber, and the surrounding layer of its coupling part is peelled off, then with the spiral inner cladding side (see figure 2) that is wound in the doubly clad optical fiber coupling part of the pumping optical fiber conoid end for preparing; The double clad coupling part that is tied with pumping optical fiber is carried out the oxyhydrogen flame heating and melting, simultaneously multimode fiber is injected pump light, and to the luminous power of doubly clad optical fiber output is monitored, (general 93%～95%) then stops heating when the pump light coupling efficiency is the highest, note grasping manufacture crafts such as the duration and degree of heating, require pumping optical fiber only with the inner cladding fusion one of doubly clad optical fiber, and molten and and damage doubly clad optical fiber fibre core; At last the optical fiber coupling part is placed quartz cell, and be packaged in according to a conventional method in the stainless steel metal pipe.
Among the above embodiment, also can select multimode fiber and a doubly clad optical fiber more than 2 or 2, make high-power optical fiber side pumping coupler by above-mentioned same method step, during making, many root multimode fibers can be coupled in a place or the many places of doubly clad optical fiber side by side or respectively.
Claims (2)
1. high-power optical fiber side pumping coupler, comprise metal tube, quartz cell, a doubly clad optical fiber and one or more pumping optical fiber, the optical fiber coupling part places quartz cell, and in quartz cell is packaged in metal tube, it is characterized in that described pumping optical fiber is one or more multimode fiber, pumping optical fiber one end pulls into taper rear screw formula and is wound in doubly clad optical fiber inner cladding side, and only with the direct fusion one of the inner cladding of doubly clad optical fiber.
2. the manufacture method of a high-power optical fiber side pumping coupler as claimed in claim 1 is characterized in that comprising the steps:
(1) at first the overlay of pumping optical fiber one end is peeled off, and at high temperature pulled into taper;
(2) doubly clad optical fiber is placed optical fiber draw on two chucks of awl machine, and the surrounding layer of its coupling part is peelled off, then the spiral inner cladding side that is wound in the doubly clad optical fiber coupling part of the pumping optical fiber conoid end that step (1) is prepared;
(3) the doubly clad optical fiber coupling part that is tied with pumping optical fiber is carried out heating and melting, carry out optical power monitoring simultaneously, when the pump light coupling efficiency is the highest, then stop heating and melting;
(4) the optical fiber coupling part is placed quartz cell, and be packaged in the metal tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101032393A CN101777723B (en) | 2010-01-27 | 2010-01-27 | High-power optical fiber side pumping coupler and manufacture method thereof |
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| CN2010101032393A CN101777723B (en) | 2010-01-27 | 2010-01-27 | High-power optical fiber side pumping coupler and manufacture method thereof |
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| CN101777723A true CN101777723A (en) | 2010-07-14 |
| CN101777723B CN101777723B (en) | 2012-05-02 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050882A (en) * | 2012-12-07 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Solid laser beam amplifier using side pumping of optical fiber light guide and laser |
| CN103477258A (en) * | 2011-02-03 | 2013-12-25 | 3Sae科技公司 | Side pump fiber, method of making same, and optical devices using same |
| CN103913804A (en) * | 2013-01-08 | 2014-07-09 | 江苏天元激光科技有限公司 | Long-distance weak-coupling optical fiber coupler and application thereof |
| CN103926650A (en) * | 2013-01-15 | 2014-07-16 | 江苏天元激光科技有限公司 | Cladding optical power stripping method of double-cladding fiber |
| CN104297845A (en) * | 2014-10-13 | 2015-01-21 | 武汉锐科光纤激光器技术有限责任公司 | Laser fiber transmission system capable of monitoring cladding light and feedback light |
| CN109085677A (en) * | 2017-06-14 | 2018-12-25 | 福州高意光学有限公司 | A kind of high-power optical-fiber coupling structure of ultralow Insertion Loss |
| CN109239850A (en) * | 2018-10-15 | 2019-01-18 | 南京理工大学 | A kind of side-pumping bundling device and preparation method thereof |
| CN112713490A (en) * | 2020-12-28 | 2021-04-27 | 北京工业大学 | Intermediate infrared band continuous all-fiber oscillator |
-
2010
- 2010-01-27 CN CN2010101032393A patent/CN101777723B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477258A (en) * | 2011-02-03 | 2013-12-25 | 3Sae科技公司 | Side pump fiber, method of making same, and optical devices using same |
| CN103477258B (en) * | 2011-02-03 | 2016-12-21 | 3Sae科技公司 | Side pumping optical fiber, side pumping methods for optical fiber manufacture and use its Optical devices |
| CN103050882A (en) * | 2012-12-07 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Solid laser beam amplifier using side pumping of optical fiber light guide and laser |
| CN103050882B (en) * | 2012-12-07 | 2016-03-02 | 中国科学院西安光学精密机械研究所 | Adopt solid laser amplifier and the laser of optical fiber light-guiding laser diode-side-pumped |
| CN103913804A (en) * | 2013-01-08 | 2014-07-09 | 江苏天元激光科技有限公司 | Long-distance weak-coupling optical fiber coupler and application thereof |
| CN103926650A (en) * | 2013-01-15 | 2014-07-16 | 江苏天元激光科技有限公司 | Cladding optical power stripping method of double-cladding fiber |
| CN103926650B (en) * | 2013-01-15 | 2016-01-20 | 江苏天元激光科技有限公司 | A kind of cladding light power stripping means of doubly clad optical fiber |
| CN104297845A (en) * | 2014-10-13 | 2015-01-21 | 武汉锐科光纤激光器技术有限责任公司 | Laser fiber transmission system capable of monitoring cladding light and feedback light |
| CN109085677A (en) * | 2017-06-14 | 2018-12-25 | 福州高意光学有限公司 | A kind of high-power optical-fiber coupling structure of ultralow Insertion Loss |
| CN109239850A (en) * | 2018-10-15 | 2019-01-18 | 南京理工大学 | A kind of side-pumping bundling device and preparation method thereof |
| CN112713490A (en) * | 2020-12-28 | 2021-04-27 | 北京工业大学 | Intermediate infrared band continuous all-fiber oscillator |
| CN112713490B (en) * | 2020-12-28 | 2024-06-04 | 北京工业大学 | Mid-infrared band continuous all-fiber oscillator |
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| Publication number | Publication date |
|---|---|
| CN101777723B (en) | 2012-05-02 |
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