CN203025420U

CN203025420U - Optical fiber beam combiner

Info

Publication number: CN203025420U
Application number: CN 201320002506
Authority: CN
Inventors: 于海鹰; 张永坚; 魏谦; 李琪
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2013-01-05
Filing date: 2013-01-05
Publication date: 2013-06-26
Anticipated expiration: 2023-01-05

Abstract

The utility model provides an optical fiber beam combiner. The optical fiber beam combiner comprises a thick optical fiber and a plurality of thin optical fibers, and is characterized in that the thick optical fiber is provided with a plurality of tapered cavities for arranging the thin optical fibers; one end of each thin optical fiber is provided with a tapered head part matched with each tapered cavity; and the other end of each thin optical fiber is provided with a semiconductor laser device. According to the optical fiber beam combiner disclosed by the utility model, laser beams generated by a plurality of the semiconductor laser devices can be effectively combined into the thick optical fiber, so that laser loss is reduced through a tapered face. According to the optical fiber beam combiner disclosed by the utility model, the laser emitted by a plurality of the semiconductor laser devices is coupled to conveniently form the laser with a large power, so that the requirements of national defense, industries and medical treatment on the high-power laser are easily met.

Description

Optical-fiber bundling device

Technical field

The utility model relates to a kind of optical-fiber bundling device, in particular, relates in particular to the optical-fiber bundling device that a kind of thickness optical fiber adopts circular conical surface to match.

Background technology

Laser has that divergence is minimum, brightness is high, the great characteristics of the extremely pure and mild energy density of color, high-octane laser can be widely used in the Precision Machining of metal solder, cutting, medicine equipment, and along with the development of laser technology, high-power laser also is widely used in modern national defense, modern industry and modern medical service.

Powerful laser instrument not only volume is large, and price is very expensive, with a plurality of low-power lasers particularly the laser that sends of cheap semiconductor laser synthesize, to obtain the laser of relatively high power, realize the purpose of using.

Summary of the invention

The utility model is in order to overcome the shortcoming of above-mentioned technical matters, the optical-fiber bundling device that provides a kind of thickness optical fiber to adopt circular conical surface to match.

Optical-fiber bundling device of the present utility model comprises jumbo fiber and a plurality of thin optic fibre that is arranged on jumbo fiber; Its special feature is: offer a plurality of conical cavities for the coupling thin optic fibre on described jumbo fiber, an end of each thin optic fibre is provided with the conical nose that matches with conical cavity, and the other end of thin optic fibre is provided with semiconductor laser.

A plurality of thin optic fibres are arranged on a jumbo fiber, and the laser that effectively a plurality of semiconductor lasers is sent is coupled, and makes the laser that jumbo fiber sends have larger energy, satisfies application demand.Because thin optic fibre is connected with the fit form of conical cavity by conical nose with jumbo fiber, effective reduced the loss of laser on surface of contact.

Optical-fiber bundling device of the present utility model also can be provided with N level optical fiber on described thin optic fibre, be provided with (N+1) level optical fiber on N level optical fiber; The array configuration of thin optic fibre and N level optical fiber, N level optical fiber and (N+1) level optical fiber is identical with the array configuration of jumbo fiber and thin optic fibre; Wherein, N 〉=3, and N is positive integer.N level optical fiber is set on thin optic fibre, and (N+1) level optical fiber is set on N level optical fiber, make whole optical-fiber bundling device form " tree-shaped " structure, be beneficial to multiple laser and be coupled.

Optical-fiber bundling device of the present utility model, described jumbo fiber is comprised of jumbo fiber fibre core and jumbo fiber covering, and thin optic fibre is comprised of thin optic fibre fibre core and thin optic fibre covering; Described jumbo fiber fibre core contacts with the thin optic fibre fibre core, and the jumbo fiber covering contacts with the thin optic fibre covering.Make jumbo fiber contact with fibre core with the fibre core of thin optic fibre, covering contacts with covering, has guaranteed that the index distribution of surface of contact can not change.

The beneficial effects of the utility model are: optical-fiber bundling device of the present utility model, by on same jumbo fiber, many thin optic fibres being set, and thin optic fibre matches with the form of conical cavity by conical nose with jumbo fiber, the laser power that can effectively a plurality of semiconductor lasers be produced merges in jumbo fiber, and the loss when having reduced by taper surface that laser enters jumbo fiber, can effectively synthesize powerful laser.Optical-fiber bundling device also can be " tree-shaped " structure simultaneously, can avoid can greatly improving the laser instrument number of closing bundle with respect to existing equipment in theory because the fiber lengths restriction causes number of fibers capable of being combined limited.Optical-fiber bundling device of the present utility model, at first the end with thin optic fibre utilizes hydrofluoric acid treatment, then produces conical nose under the lifting state; Then utilize machinery to process conical cavity on jumbo fiber, guaranteed the good fit of thin optic fibre and jumbo fiber, be convenient to form satisfactory bundling device.Can get inner conical on jumbo fiber by being machined in, can prevent effectively that the existing Refractive Index Profile o that causes in the thermal treatment of cone method of drawing from changing; The combination of pyramidal structure can make the final fibre core of optical fiber structure mutually merge, and guarantees that fibre core well merges the index distribution that does not make again structure and changes.

Description of drawings

Fig. 1 is the perspective view of the first embodiment of the utility model optical-fiber bundling device;

Fig. 2 is the cut-open view of the first embodiment of the utility model optical-fiber bundling device;

Fig. 3 is the second example structure schematic diagram of the utility model optical-fiber bundling device;

Fig. 4 is that the end tilts of thin optic fibre immerses the structural representation in corrosive liquids;

Fig. 5 is the structural representation of thin optic fibre after the corrosive liquids corrosion.

In figure: 1 jumbo fiber, 2 thin optic fibres, 3 conical cavities, 4 conical noses, 5 N level optical fiber, 6 jumbo fiber fibre cores, 7 jumbo fiber coverings, 8 thin optic fibre fibre cores, 9 thin optic fibre coverings, 10 corrosive liquids.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

Optical-fiber bundling device embodiment 1,As depicted in figs. 1 and 2, provided respectively stereographic map and the cut-open view of optical-fiber bundling device the first embodiment of the present utility model, it comprises jumbo fiber 1, thin optic fibre 2, conical cavity 3, conical head 4; Shown a plurality of thin optic fibres 2 are fixedly installed on jumbo fiber 1.Offer on jumbo fiber 1 for the fixing conical cavity 3 of thin optic fibre 2, an end of thin optic fibre 2 is provided with the conical nose 4 that matches with conical cavity 3; By conical nose 4 is inserted in conical cavity 3, can realize the good fit of thin optic fibre 2 and jumbo fiber 1.Shown jumbo fiber 1 is comprised of jumbo fiber fibre core 6 and jumbo fiber covering 7, and thin optic fibre 2 is comprised of thin optic fibre fibre core 8 and thin optic fibre covering 9; With after jumbo fiber 1 coordinates, should guarantee that jumbo fiber fibre core 6 contacts with thin optic fibre fibre core 8 when thin optic fibre 2, jumbo fiber covering 7 contacts with thin optic fibre covering 9, and this just has been equivalent to realize fusion thick, the thin optic fibre fibre core, the fusion of thick, thin optic fibre covering; Can not change with the index distribution of guaranteeing surface of contact.

The other end of thin optic fibre 2 is used for arranging semiconductor laser, the laser that a plurality of semiconductor lasers send enters in jumbo fiber 1 through thin optic fibre 2, effectively realized the stack of multiple laser energy, the laser that makes jumbo fiber 1 send has larger power, satisfies that the precision be applied to metal solder, cutting, medicine equipment adds, the demand of modern national defense and modern industry.

Optical-fiber bundling device embodiment 2,As shown in Figure 3, provided the structural scheme of mechanism of the second embodiment of optical-fiber bundling device of the present utility model, it comprises jumbo fiber 1, thin optic fibre 2, conical cavity 3, conical head 4 and N level optical fiber; All identical in shown thin optic fibre 2 and the structure of jumbo fiber 1 and fit form and embodiment 1.Different is also to be provided with N level optical fiber 5 on thin optic fibre 2; As same expansion, (N+1) level optical fiber can be set also on N level optical fiber.Wherein, the fit form of thin optic fibre 1 and N level optical fiber 5, N level optical fiber and (N+1) level optical fiber also all with embodiment 1 in the array configuration of thin optic fibre 2 and jumbo fiber 1 identical.Optical-fiber bundling device adopts this form, can more semiconductor laser be set on shorter jumbo fiber 1, is conducive to produce the laser of relatively high power.

The optical-fiber bundling device of this version should guarantee that not only jumbo fiber fibre core 6 contacts with thin optic fibre fibre core 8, and jumbo fiber covering 7 contacts with thin optic fibre covering 9; The fibre core that also should guarantee N level optical fiber 5 contacts with the fibre core of (N+1) level optical fiber, and the covering of N level optical fiber 5 contacts with the covering of (N+1) level optical fiber.

The method for making of optical-fiber bundling device of the present utility model, can adopt following steps:

A). at first the end tilts with thin optic fibre 2 immerses in the mordant liquid of optical fiber, as shown in Figure 4, the end tilts that has provided thin optic fibre immerses the structural representation in corrosive liquids, should guarantee that the angle that angle that thin optic fibre immerses liquid and last and jumbo fiber close when restrainting is consistent; Then at the uniform velocity upwards promote thin optic fibre under certain speed, in order to produce asymmetric conical nose 4 at the thin optic fibre end; Control the tapering of thin optic fibre end conical nose by controlling pulling speed; Wherein, can select hydrofluorite to the mordant liquid of glass;

B). utilize and with the micromachine of taper pin, jumbo fiber 1 is processed, process a plurality of conical cavities 3 on jumbo fiber;

C). the conical nose of thin optic fibre is inserted in the conical cavity of jumbo fiber; The conical nose of thin optic fibre and jumbo fiber joint portion are heated, and guarantee that the jumbo fiber fibre core contacts with the thin optic fibre fibre core, the jumbo fiber covering contacts with the thin optic fibre covering;

In this step, after thin optic fibre 2 was inserted in jumbo fiber 1, the angle of the axis of thin optic fibre and the axis of jumbo fiber was between 20～60 °;

D). in same jumbo fiber, carry out repeatedly a), b) and the c) processing of step, accessible many thin optic fibres, so that the end at every thin optic fibre arranges semiconductor laser, the power of semiconductor laser is synthesized to an optical fiber output, makes the jumbo fiber output power of closing after restrainting satisfy particular requirement.

Optical-fiber bundling device of the present utility model, by on same jumbo fiber, many thin optic fibres being set, and thin optic fibre matches with the form of conical cavity by conical nose with jumbo fiber, the laser coupled that can effectively a plurality of semiconductor lasers be produced is in jumbo fiber, and the loss when having reduced by taper surface that laser enters jumbo fiber, can effectively synthesize powerful laser.Optical-fiber bundling device also can be " tree-shaped " structure simultaneously.The method for making of optical-fiber bundling device of the present utility model, at first the end with thin optic fibre utilizes hydrofluoric acid treatment, then produces conical nose under the lifting state; Then utilize machinery to process conical cavity on jumbo fiber, guaranteed the good fit of thin optic fibre and jumbo fiber, be convenient to form satisfactory bundling device.

Claims

1. an optical-fiber bundling device, comprise jumbo fiber (1) and a plurality of thin optic fibre (2) that is arranged on jumbo fiber; It is characterized in that: offer a plurality of conical cavities (3) for the coupling thin optic fibre on described jumbo fiber, an end of each thin optic fibre is provided with the conical nose (4) that matches with conical cavity, and the other end of thin optic fibre is provided with semiconductor laser.

2. optical-fiber bundling device according to claim 1, is characterized in that: also be provided with N level optical fiber (5) on described thin optic fibre (2), be provided with (N+1) level optical fiber on N level optical fiber; The array configuration of thin optic fibre and N level optical fiber, N level optical fiber and (N+1) level optical fiber is identical with the array configuration of jumbo fiber and thin optic fibre; Wherein, N 〉=3, and N is positive integer.

3. optical-fiber bundling device according to claim 1, it is characterized in that: described jumbo fiber (1) is comprised of jumbo fiber fibre core (6) and jumbo fiber covering (7), and thin optic fibre (2) is comprised of thin optic fibre fibre core (8) and thin optic fibre covering (9); Described jumbo fiber fibre core contacts with the thin optic fibre fibre core, and the jumbo fiber covering contacts with the thin optic fibre covering.