CN219370043U

CN219370043U - Energy homogenizing optical fiber device

Info

Publication number: CN219370043U
Application number: CN202320386849.1U
Authority: CN
Inventors: 康志京
Original assignee: Suzhou Feiboschuang Photoelectric Technology Co ltd
Current assignee: Suzhou Feiboschuang Photoelectric Technology Co ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-07-18
Anticipated expiration: 2033-03-03

Abstract

The utility model provides an energy homogenizing optical fiber device, which comprises an optical fiber and a sleeve sleeved outside the optical fiber, wherein a core layer of the optical fiber is circular, two ends of the sleeve are opened, a macrobend tunnel which is continuously bent and spirally arranged is arranged between an access end and a penetrating end of the sleeve, and the macrobend tunnel is opened, so that the problem of higher cost of square core uniform light optical fiber is solved.

Description

Energy homogenizing optical fiber device

Technical Field

The utility model relates to the technical field of energy-transmitting optical fibers, in particular to an energy homogenizing optical fiber device.

Background

The energy conducted by the energy-transmitting optical fiber follows a Gaussian distribution mode, the energy in the center of a light spot is concentrated, the peripheral energy is weak, and in the application fields of the energy-transmitting optical fiber such as medical treatment, laser processing and the like, in order to realize the function of uniform output energy, the energy conduction is generally carried out by using a uniform light optical fiber, so that the uniformity of the light spot output by the energy-transmitting optical fiber is optimized. The light homogenizing optical fiber generally refers to a special optical fiber with a rectangular, hexagonal or octagonal optical fiber core layer. Currently, as in chinese patent CN111983748B, an energy homogenizing optical fiber and a method for preparing the same, which comprises: the cross section of the fiber core is regular polygon, and a first chamfer is arranged between two adjacent sides of the cross section of the fiber core; and the first cladding layer is coated outside the fiber core. The cross section of the fiber core is designed into a regular polygon, so that the circularly symmetric structure of the cross section of the fiber core is damaged, more high-order modes can be excited, the energy at the center of the fiber core can be dispersed to the periphery, the effect of homogenizing light spots is achieved, and the circularly symmetric structure of the cross section of the fiber core can be further damaged by arranging the first chamfer between two adjacent edges, so that the capability of homogenizing the light spots of the optical fiber is further enhanced. However, in the technical scheme, the square-core uniform-light optical fiber is used for replacing the round core-layer optical fiber with similar core area, so that the cost is easily increased by 3-5 times, and the popularization and application of the uniform-light optical fiber in the field of energy transmission optical fibers are not facilitated.

Disclosure of Invention

The utility model provides an energy homogenizing optical fiber device, which aims to solve the problem of higher cost of square-core homogenizing optical fibers.

The utility model provides an energy homogenizing optical fiber device, which adopts the following technical scheme:

the utility model provides an energy homogenization fiber device, includes the optic fibre, still includes the sleeve pipe of cover at the optic fibre outside, the sandwich layer of optic fibre is circular, sheathed tube access end and wearing out the open setting of end, sheathed tube access end is used for accessing optic fibre, the macrobend tunnel that continuous bending and spiral set up has been seted up between sheathed tube access end and the wearing out end, the macrobend tunnel is opened and is set up.

Preferably, the diameter of the screw thread of the macrobend tunnel is 7mm, and the pitch of the macrobend tunnel is 30mm.

Preferably, the optical fiber has a core diameter of 400 μm and a light transmission area of 0.126mm ² 。

Preferably, the access end of the sleeve is provided with an interface with the diameter wider than that of the macrobend tunnel.

Compared with the prior art, the utility model has the beneficial technical effects that:

1. according to the energy homogenizing optical fiber device, through arranging the macrobend tunnel which is provided with the continuous bending and spiral arrangement, after the optical fiber with the circular core layer penetrates into the tunnel, continuous macrobend can be naturally formed, after light is transmitted, the propagation angle formed at the boundary of the bent part is larger than a critical value, so that the total reflection condition is not met, namely, a part of light overflows from the core layer of the optical fiber, namely, continuous macrobend overflow loss can be generated, through the analysis of light beam quality, the Gaussian distribution mode of output light spots can be improved to be approximately flat-topped distribution mode by the design of the macrobend tunnel, the uniformity of the light spot energy is effectively improved, and compared with a Fang Xinyun optical fiber, only the optical fiber with the circular core layer is adopted, so that the selectable type is rich, and the cost is low.

2. The energy homogenizing optical fiber device provided by the utility model has the advantages that the core diameter is 400 mu m, and the light transmission area is 0.126mm ² On the premise of ensuring that the wave transmittance is more than 85%, the light spot energy difference can be controlled within +/-15%.

3. According to the energy homogenizing optical fiber device provided by the utility model, the interface with the diameter being wider than that of the macrobend tunnel is arranged at the access end of the sleeve, so that the protection tube for cladding the optical fiber can be accessed into the sleeve for reinforcement.

Drawings

FIG. 1 is a schematic diagram of an energy homogenizing fiber optic apparatus provided by the present utility model;

FIG. 2 is a schematic diagram of an energy-homogenizing optical fiber device according to the present utility model;

FIG. 3 is a beam quality analysis chart of the present utility model;

reference numerals: 1. an optical fiber; 2. a sleeve; 21. an access terminal; 22. a penetrating end; 23. an interface; 3. macrobend tunnel.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses an energy homogenizing optical fiber device.

According to fig. 2, an energy homogenizing optical fiber device comprises an optical fiber 1, and further comprises a sleeve 2 sleeved outside the optical fiber 1, wherein a core layer of the optical fiber 1 is circular, two ends of the sleeve 2 are opened, a macrobend tunnel 3 which is continuously bent and spirally arranged is arranged between an access end 21 and a penetrating end 22 of the sleeve 2, and the macrobend tunnel 3 is opened. Through setting up the macrobend tunnel 3 that has continuous bending and spiral setting, after the optic fibre of circular sandwich layer penetrated this tunnel, can naturally form continuous macrobend, can produce continuous macrobend after the light is led out and spill over the loss, obtain through figure 3 light beam quality analysis, this macrobend tunnel 3's design will be can be with the Gaussian distribution mode improvement of output facula for approximately flat-topped distribution mode, effectively promoted the homogeneity of facula energy, compared with the optic fibre of square sandwich layer, only adopt the optic fibre of general circular sandwich layer, the optional type is abundant, the cost is lower.

The diameter of the screw thread of the macrobend tunnel 3 is 7mm, the pitch of the macrobend tunnel 3 is 30mm, the diameter of the screw thread and the pitch size are determined according to the parameters of the optical fibers, and different optical fibers 1 correspond to different diameters and pitches of the macrobend tunnel 3.

The optical fiber 1 had a core diameter of 400 μm and a light transmission area of 0.126mm ^2， By setting the core diameter to 400 mu m, the light transmission area is 0.126mm ² On the premise of ensuring that the wave transmittance is more than 85%, the light spot energy difference can be controlled within +/-15%.

The access end 21 of the sleeve 2 is provided with an interface 23 with a diameter wider than that of the macrobend tunnel 3, so that the protection tube of the coated optical fiber 1 can be connected into the sleeve 2 for reinforcement.

The optical fiber 1 adopts an infrared quartz optical fiber, and the sleeve 2 is manufactured by 3D printing.

The scheme of the utility model is compared with the parameters of the existing square-core uniform-light optical fiber in the following table;

TABLE 1 comparison of fiber parameters

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides an energy homogenization fiber device, includes optic fibre (1), its characterized in that still includes sleeve pipe (2) of cover at optic fibre (1) outside, the sandwich layer of optic fibre (1) is circular, the open setting of access end (21) and the wearing out end (22) of sleeve pipe (2), the access end (21) of sleeve pipe (2) are used for accessing optic fibre (1), continuous bending and spiral setting's macrobend tunnel (3) have been seted up between the access end (21) and the wearing out end (22) of sleeve pipe (2), macrobend tunnel (3) open the setting.

2. An energy homogenizing optical fiber arrangement according to claim 1, wherein the macrobend tunnel (3) has a thread diameter of 7mm and the macrobend tunnel (3) has a pitch of 30mm.

3. An energy homogenizing optical fiber arrangement according to claim 1, wherein the core diameter of the optical fiber (1) is 400 μm, and the light transmission area of the optical fiber (1) is 0.126mm ² 。

4. An energy homogenizing fiber arrangement according to claim 1, wherein the access end (21) of the ferrule (2) is provided with an interface (23) of a tunnel (3) of a diameter of a width Yu Hongwan.