Upright beam expanding clamp

Abstract

The utility model discloses a vertical beam-expanding clamp, which belongs to the technical field of beam-expanding clamps and comprises a beam-expanding clamp adapter plate, a beam-expanding clamp and a fire head, the beam-expanding clamp adapter plate is a rectangular plate, the middle of one side of the beam-expanding clamp adapter plate extends outwards to be connected with a clamp mounting plate, and the clamp mounting plate is perpendicular to the beam-expanding clamp adapter plate; the beam expanding clamp is arranged on the clamp mounting plate and is consistent with the clamp mounting plate in size and shape, an optical fiber clamping groove is formed in the middle of the beam expanding clamp, and the optical fiber clamping groove linearly penetrates through the two ends of the beam expanding clamp; the fire head is arranged at the outer end of the beam expanding clamp, and the flame position of the fire head right faces the optical fiber clamping groove. The device is simple in structure and convenient to use, can shorten the length of a beam-expanding optical fiber, can manufacture a short-size beam-expanding tail fiber, avoids the problem that a coating layer is burnt by the edge of flame of a fire head, and plays a great role in producing small-size micro-optical devices.

Description

Technical Field

[0001] The utility model relates to the technical field of beam expansion clamps, in particular to an upright beam expansion clamp. Background Art

[0002] Optical fiber is the abbreviation of optical fiber, which is a fiber made of glass or plastic that can be used as a light transmission tool. According to the different modes of the transmission point, optical fiber can be divided into single-mode optical fiber and multi-mode optical fiber. The so-called "mode" refers to a beam of light entering the optical fiber at a certain angular velocity. Single-mode optical fiber uses a solid laser as a light source, while multi-mode optical fiber uses a light-emitting diode as a light source. Multi-mode optical fiber allows multiple beams of light to propagate simultaneously in the optical fiber, thus forming mode dispersion. Mode dispersion technology limits the bandwidth and distance of multi-mode optical fiber. Therefore, the core of multi-mode optical fiber is thick, the transmission speed is low, the distance is short, and the overall transmission performance is poor, but its cost is relatively low. It is generally used in buildings or in geographically adjacent environments. The core of single-mode optical fiber is relatively thin, the transmission frequency band is wide, the capacity is large, and the transmission distance is long, but because it requires a laser source, the cost is relatively high.

[0003] The mode field diameter is used to characterize the distribution state of the fundamental mode light in the core area of ​​a single-mode optical fiber. The fundamental mode has the highest light intensity at the axis of the core area, and gradually weakens as the distance from the axis increases. The size of the mode field diameter is related to the wavelength used. As the wavelength increases, the mode field diameter increases. In the optical fiber, the light energy is not completely concentrated in the core for transmission, and part of the energy is transmitted in the cladding. The core diameter cannot reflect the energy distribution in the optical fiber. Therefore, the concept of effective area is proposed. If the effective area is small, the density of the optical fiber cross section is large, and excessive density will cause nonlinear effects. Therefore, for transmission optical fibers, the larger the mode field diameter, the better. In order to increase the mode field diameter, the optical fiber can be locally heated and the expansion principle of the material can be used for beam expansion. However, most of the existing optical fiber beam expansion fixtures use horizontal fixtures to clamp the optical fiber, which is not suitable for short-sized optical fiber beam expansion, and the beam expansion length is limited by the width of the flame head, which is easy to burn the coating layer. Utility Model Content

[0004] The purpose of the utility model is to provide a vertical beam expansion fixture to solve the above problems, so as to manufacture short-sized optical fibers and improve production quality and efficiency.

[0005] Technical solution: The utility model provides an upright beam expansion fixture, including: a beam expansion fixture adapter plate, a beam expansion fixture, and a flame head. The beam expansion fixture adapter plate is a rectangular plate, and one side of the middle extends outward to connect the fixture mounting plate, and the fixture mounting plate is perpendicular to the beam expansion fixture adapter plate; the beam expansion fixture is set on the fixture mounting plate, and the size and shape are consistent with the fixture mounting plate. The middle of the beam expansion fixture is provided with an optical fiber clamping groove, and the optical fiber clamping groove passes through the two ends of the beam expansion fixture in a straight line; the flame head is set at the outer end of the beam expansion fixture, and the flame position of the flame head is opposite to the optical fiber clamping groove. The beam expansion fixture is erected by the beam expansion fixture adapter plate, which is convenient for shortening the length of the beam expansion optical fiber.

[0006] Furthermore, in the above-mentioned upright beam expansion fixture, two rows of positioning and mounting holes are symmetrically arranged on the adapter plate of the beam expansion fixture.

[0007] Furthermore, in the above-mentioned upright beam expansion fixture, magnet mounting holes are provided at the four corners of the fixture mounting plate, and magnets are arranged in the magnet mounting holes to adsorb the beam expansion fixture, so as to facilitate assembly and installation.

[0008] Furthermore, in the upright beam expansion fixture, the two sides of the middle of the fixture mounting plate are provided with fixture positioning pins, and the connecting surface between the beam expansion fixture and the fixture mounting plate is provided with positioning holes that cooperate with the fixture positioning pins. The positioning pins and the positioning holes cooperate to fix the beam expansion fixture, thereby improving the stability of the fixture.

[0009] Furthermore, in the above-mentioned upright beam expansion clamp, clamping magnet mounting holes are arranged on both sides of the optical fiber clamping groove in the middle of the beam expansion clamp.

[0010] Furthermore, a clamping magnet is installed on the clamping magnet installation hole to fix the optical fiber in the optical fiber clamping groove.

[0011] It can be seen from the above technical scheme that the utility model has the following beneficial effects: the upright beam expansion clamp described in the utility model has a simple structure, and adopts an upright clamp to expand the optical fiber, which can shorten the length of the expanded optical fiber and produce a short-sized beam expansion pigtail. It can avoid the problem of the edge of the flame burning to the coating layer, improve production quality and efficiency, and play a great role in the production of small-sized micro-optical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of an upright beam expansion fixture of the utility model;

[0013] Figure 2 This is a schematic diagram of the adapter plate of the beam expansion fixture of the utility model;

[0014] Figure 3 This is a schematic diagram of the beam expansion fixture of the utility model.

[0015] In the figure: beam expansion fixture adapter plate 1, beam expansion fixture 2, fire head 3, connection fixture mounting plate 11, positioning mounting hole 12, optical fiber clamp groove 21, clamping magnet mounting hole 22, magnet mounting hole 111, fixture positioning pin 112. DETAILED DESCRIPTION

[0016] Example 1

[0017] like Figure 1-3 The upright beam expansion fixture shown includes: a beam expansion fixture adapter plate 1, a beam expansion fixture 2, and a flame head 3. The beam expansion fixture adapter plate 1 is a rectangular plate, and one side of the middle extends outward to connect the fixture mounting plate 11, and the fixture mounting plate 11 is perpendicular to the beam expansion fixture adapter plate 1; the beam expansion fixture 2 is set on the fixture mounting plate 1, and the size and shape are consistent with the fixture mounting plate 11. The middle of the beam expansion fixture 2 is provided with a fiber clamping groove 21, and the fiber clamping groove 21 passes through the two ends of the beam expansion fixture 2 in a straight line; the flame head 3 is set at the outer end of the beam expansion fixture 2, and the flame position of the flame head 3 is opposite to the fiber clamping groove 21. The beam expansion fixture is erected by the beam expansion fixture adapter plate, which is convenient for shortening the length of the beam expansion optical fiber. The original length of the optical fiber after beam expansion is greater than 5mm, and now it can reach 3mm.

[0018] Example 2

[0019] On the basis of Example 1, in this example, Figure 2 The vertical beam expansion fixture shown in the figure has two rows of positioning and mounting holes 12 symmetrically arranged on the beam expansion fixture adapter plate 1; magnet mounting holes 111 are arranged at the four corners of the fixture mounting plate 11, and the beam expansion fixture 2 is adsorbed by magnets arranged in the magnet mounting holes 111; fixture positioning pins 112 are arranged on both sides of the middle of the fixture mounting plate 11. The adsorption of the beam expansion fixture facilitates assembly and installation, and improves the stability of the fixed beam expansion fixture 2.

[0020] like Figure 3 An upright beam expansion fixture is shown, wherein the connection surface between the beam expansion fixture 2 and the fixture mounting plate 11 is provided with a positioning hole that cooperates with the fixture positioning pin 112.

[0021] In this embodiment, clamping magnet mounting holes 22 are provided on both sides of the optical fiber clamping groove 21 in the middle of the beam expansion clamp 2 .

[0022] In this embodiment, a clamping magnet is installed on the clamping magnet installation hole 22 to fix the optical fiber in the optical fiber clamping groove 21. The optical fiber in the optical fiber clamping groove 21 is pressed to ensure stability during the beam expansion process and improve production quality.

[0023] It should be noted that the above is only a technical solution of the utility model and is not a limitation. Although the utility model is described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A vertical beam expansion fixture, characterized in that: include: A beam expansion fixture adapter plate (1), the beam expansion fixture adapter plate (1) being a rectangular plate, with the middle of one side extending outward to connect to a fixture mounting plate (11), the fixture mounting plate (11) being perpendicular to the beam expansion fixture adapter plate (1); A beam expansion fixture (2), the beam expansion fixture (2) being arranged on a fixture mounting plate (11), having the same size and shape as the fixture mounting plate (11), a fiber clamping groove (21) being arranged in the middle of the beam expansion fixture (2), and the fiber clamping groove (21) passing through two ends of the beam expansion fixture (2) in a straight line; A flame head (3), wherein the flame head (3) is arranged at the outer end of the beam expansion fixture (2), and the flame position of the flame head (3) is directly opposite to the optical fiber clamping groove (21).

2. The upright beam expansion fixture according to claim 1, characterized in that: Two rows of positioning and mounting holes (12) are symmetrically arranged on the beam expansion fixture adapter plate (1).

3. The upright beam expansion fixture according to claim 1, characterized in that: The fixture mounting plate (11) is provided with magnet mounting holes (111) at the four corners, and a magnet adsorption beam expansion fixture (2) is arranged in the magnet mounting holes (111).

4. The upright beam expansion fixture according to claim 1, characterized in that: Clamp positioning pins (112) are provided on both sides of the middle of the clamp installation plate (11).

5. The upright beam expansion fixture according to claim 4, characterized in that: The connection surface between the beam expansion clamp (2) and the clamp mounting plate (11) is provided with a positioning hole that cooperates with the clamp positioning pin (112).

6. The upright beam expansion fixture according to claim 1, characterized in that: The center of the beam expansion clamp (2) is provided with clamping magnet mounting holes (22) on both sides of the optical fiber clamping groove (21).

7. The upright beam expansion fixture according to claim 6, characterized in that: A clamping magnet is installed on the clamping magnet installation hole (22) to fix the optical fiber in the optical fiber clamping groove (21).

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