In-line special ratio polarization-maintaining fiber beam splitter

Abstract

The utility model discloses an online special ratio polarization-maintaining optical fiber beam splitter, comprising a lower shell and an optical fiber protection mechanism; the lower shell: a splitter is bonded to the left side of the upper surface of the lower shell by AB glue, a main optical fiber connector is arranged on the left side of the front side of the lower shell, the main optical fiber of the splitter is connected to the rear side of the main optical fiber connector, the right side of the front side of the lower shell is provided with evenly distributed auxiliary optical fiber connectors, the branch optical fibers of the splitter are respectively connected to the rear sides of the auxiliary optical fiber connectors, symmetrically distributed mounting columns are arranged at the four corners of the upper surface edge of the lower shell, the upper shell is connected between the upper ends of the mounting columns by bolts, the lower shell is plugged into the interior of the upper shell, and a limiting mechanism is arranged on the top wall of the upper shell; the optical fiber protection mechanism comprises an optical fiber separation groove and an arc-shaped protection seat, and the online special ratio polarization-maintaining optical fiber beam splitter separates and protects the branch optical fibers of the splitter to avoid violent shaking of the branch optical fibers.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber beam splitters, in particular to an online special-ratio polarization-maintaining optical fiber beam splitter. Background Art

[0002] As a passive optical component, the function of the polarization-maintaining fiber beam splitter is to achieve the splitting of light wave power while maintaining the original polarization state of the light wave. The polarization-maintaining fiber beam splitter is manufactured using micro-optics and mature glass tube technology, and has the advantages of low WDL, low PDL, wide operating temperature range and operating wavelength range.

[0003] The existing polarization-maintaining fiber optic beam splitter usually has a splitter inside the shell. The main fiber and the branch fiber of the splitter are connected to the fiber optic connector respectively. However, the branch fiber is placed randomly inside the shell. When the fiber optic beam splitter is shaken violently, the branch fiber will also shake and may be damaged. For this reason, we propose an online special ratio polarization-maintaining fiber optic beam splitter. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an online special ratio polarization-maintaining fiber optic splitter, which can effectively solve the problems in the background technology by separating and protecting the branch optical fibers of the splitter to avoid violent shaking of the branch optical fibers.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online special ratio polarization-maintaining optical fiber beam splitter, comprising a lower housing and an optical fiber protection mechanism;

[0006] Lower shell: A splitter is bonded to the left side of its upper surface by AB glue, a main optical fiber connector is provided on the left side of the front side of the lower shell, the main optical fiber of the splitter is connected to the rear side of the main optical fiber connector, and evenly distributed auxiliary optical fiber connectors are provided on the right side of the front side of the lower shell, and the branch optical fibers of the splitter are respectively connected to the rear sides of the auxiliary optical fiber connectors, symmetrically distributed mounting columns are provided at the four corners of the upper surface edge of the lower shell, the upper ends of the mounting columns are connected to the upper shell by bolts, the lower shell is plugged into the interior of the upper shell, and a limiting mechanism is provided on the top wall of the upper shell;

[0007] Fiber optic protection mechanism: It includes a fiber optic separation groove and an arc-shaped protection seat. The right side of the upper surface of the lower shell is bonded with the arc-shaped protection seat by AB glue. The upper surface of the arc-shaped protection seat is provided with evenly distributed fiber optic separation grooves. The branch optical fibers are respectively placed inside the fiber optic separation grooves. The branch optical fibers of the splitter are separated and protected to prevent the branch optical fibers from shaking violently.

[0008] Furthermore, the optical fiber protection mechanism also includes a dividing strip, a pressure plate 1 and a pressure plate 2. The front and rear ends of the arc-shaped protection seat are provided with evenly distributed dividing strips. The front and rear ends of the optical fiber separation groove are respectively located between two adjacent dividing strips. A pressure plate 1 is placed between the two adjacent dividing strips on the front side, and a pressure plate 2 is placed between the two adjacent dividing strips on the rear side. The pressure plate 1 is an iron pressure plate, and the pressure plate 2 is an arc-shaped iron pressure plate, which separates and limits the branch optical fibers.

[0009] Furthermore, the optical fiber protection mechanism also includes a magnetic strip, and a magnetic strip is arranged inside the lower surface of the arc-shaped protection seat. Both the first and second pressing plates are magnetically adsorbed to the magnetic strip to prevent the first and second pressing plates from separating.

[0010] Furthermore, the optical fiber protection mechanism also includes a partition plate. An evenly distributed partition plate is provided on the right side of the upper surface of the lower shell body. The partition plate is located between the arc-shaped protection seat and the secondary optical fiber connector. The branch optical fibers are respectively located between two adjacent partition plates. The upper ends of the partition plates are in contact with the top wall of the upper shell body to separate the optical fibers that are not in the optical fiber separation groove.

[0011] Furthermore, the limiting mechanism includes limiting plate 1, limiting plate 2, limiting plate 3 and limiting plate 4, the top wall of the upper shell is respectively provided with symmetrically distributed limiting plate 1 and symmetrically distributed limiting plate 4, the top wall of the upper shell is respectively provided with evenly distributed limiting plate 2 and limiting plate 3, the limiting plate 2 is located between the two limiting plates 1, the limiting plate 3 is located between the two limiting plates 4, the front dividing strips are clamped between the two limiting plates 4, the lower ends of the limiting plate 3 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 1, the rear dividing strips are clamped between the two limiting plates 1, the lower ends of the limiting plate 2 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 2, pressing the pressure plates 1 and 2.

[0012] Furthermore, the upper surface of the lower shell is provided with symmetrically distributed positioning blocks 1 and arc-shaped positioning blocks 2, the splitter is clamped between the two positioning blocks 1, and the arc-shaped protective seat is clamped between the two positioning blocks 2 to standardize the installation position.

[0013] Furthermore, evenly distributed mounting holes are provided on the left and right side wings of the upper shell to facilitate installation.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the online special ratio polarization-maintaining optical fiber beam splitter has the following advantages:

[0015] The workers apply AB glue to the bottom wall of the splitter and glue it between the two positioning blocks 1, and apply AB glue to the lower surface of the magnetic strip and glue it between the two positioning blocks 2, so that the installation of parts is more standardized and neat. After the glue dries, the main optical fiber of the splitter is connected to the back side of the main optical fiber connector, and the branch optical fibers of the splitter are connected to the back sides of the auxiliary optical fiber connectors respectively. Then the branch optical fibers are placed inside the optical fiber separation groove, and the branch optical fibers are placed between two adjacent separation plates respectively. After placing each branch optical fiber, the front and rear end pressure plates 1 and 2 are placed on the upper end of the corresponding optical fiber separation groove. Pressure plates 1 and 2 are magnetically adsorbed to the magnetic strip to prevent the branch optical fiber from jumping out of the optical fiber separation groove. After the placement of some optical fibers is completed, the upper shell is connected by installing column bolts, and the lower shell is inserted into the interior of the upper shell. The front dividing strips are all clamped between the two limit plates four, and the lower ends of the limit plates three are respectively in contact with the upper surfaces of the vertically adjacent pressure plates one. The rear dividing strips are all clamped between the two limit plates one, and the lower ends of the limit plates two are respectively in contact with the upper surfaces of the vertically adjacent pressure plates two, so that the pressure plates one and two are limited. No matter how the optical fiber splitter shakes, the pressure plates one and two will never move away from their original positions, and the branch optical fibers are always located inside the corresponding optical fiber separation grooves. Even if the branch optical fibers shake, the branch optical fibers will not be damaged under the limitation and protection of the optical fiber separation grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the lower shell structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the upper shell structure of the utility model;

[0019] Figure 4 It is a schematic cross-sectional view of the utility model after the upper shell is assembled.

[0020] In the figure: 1 lower shell, 2 optical fiber protection mechanism, 21 partition plate, 22 partition strip, 23 magnetic strip, 24 pressure plate 1, 25 optical fiber partition groove, 26 arc protection seat, 27 pressure plate 2, 3 splitter, 4 main optical fiber connector, 5 auxiliary optical fiber connector, 6 mounting column, 7 upper shell, 8 mounting hole, 9 limit mechanism, 91 limit plate 1, 92 limit plate 2, 93 limit plate 3, 94 limit plate 4, 10 positioning block 1, 11 positioning block 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , This embodiment provides a technical solution: an online special ratio polarization-maintaining optical fiber beam splitter, comprising a lower housing 1 and an optical fiber protection mechanism 2;

[0023] Lower shell 1: A splitter 3 is bonded to the left side of its upper surface by AB glue, a main optical fiber connector 4 is provided on the left side of the front side of the lower shell 1, the main optical fiber of the splitter 3 is connected to the rear side of the main optical fiber connector 4, and evenly distributed auxiliary optical fiber connectors 5 are provided on the right side of the front side of the lower shell 1. The branching optical fibers of the splitter 3 are respectively connected to the rear sides of the auxiliary optical fiber connectors 5. The four corners of the upper surface edge of the lower shell 1 are provided with symmetrically distributed mounting columns 6, and the upper ends of the mounting columns 6 are connected to the upper shell 7 by bolts. The lower shell 1 is inserted into the interior of the upper shell 7, and the top wall of the upper shell 7 is provided with a limiting mechanism 9, the limiting mechanism 9 includes a limiting plate 1 91, a limiting plate 2 92, a limiting plate 3 93 and a limiting plate 4 94, the top wall of the upper shell 7 is respectively provided with a symmetrically distributed limiting plate 1 91 and a symmetrically distributed limiting plate 4 94, the top wall of the upper shell 7 is respectively provided with a uniformly distributed limiting plate 2 92 and a limiting plate 3 93, the limiting plate 2 92 is located between the two limiting plates 1 91, the limiting plate 3 93 is located between the two limiting plates 4 94, the front partition bar 22 is clamped between the two limiting plates 4 94, and the lower end of the limiting plate 3 93 is respectively connected to the vertically adjacent pressure plate 1 24 The upper surface of the lower shell 1 is in contact with the upper surface, the rear partition strips 22 are all clamped between the two limit plates 91, the lower ends of the limit plates 92 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 27, the upper surface of the lower shell 1 is provided with symmetrically distributed positioning blocks 10 and arc-shaped positioning blocks 11, the splitter 3 is clamped between the two positioning blocks 10, the arc-shaped protection seat 26 is clamped between the two positioning blocks 11, and the side wings on the left and right sides of the upper shell 7 are provided with evenly distributed mounting holes 8. After all the branched optical fibers are placed, the upper shell 7 is connected by the mounting column 6 bolts, and the lower shell 1 is inserted Connected to the interior of the upper shell 7, the front partition strips 22 are all clamped between the two limit plates 94, the lower ends of the limit plates 93 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 1 24, and the rear partition strips 22 are all clamped between the two limit plates 1 91, and the lower ends of the limit plates 2 92 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 27, so as to limit the pressure plates 1 24 and 27. No matter how the optical fiber splitter shakes, the pressure plates 1 24 and 27 will never leave their original positions, and the branched optical fibers are always located inside the corresponding optical fiber separation grooves 25;

[0024] Fiber optic protection mechanism 2: It includes a fiber optic separation groove 25 and an arc-shaped protection seat 26. The right side of the upper surface of the lower shell 1 is bonded with the arc-shaped protection seat 26 by AB glue. The upper surface of the arc-shaped protection seat 26 is provided with evenly distributed fiber optic separation grooves 25. The branch optical fibers are respectively placed inside the fiber optic separation grooves 25. The fiber optic protection mechanism 2 also includes a separation strip 22, a pressure plate 1 24 and a pressure plate 2 27. The front and rear ends of the arc-shaped protection seat 26 are both provided with evenly distributed separation strips 22. The front and rear ends of the fiber optic separation groove 25 are respectively located between two adjacent separation strips 22. A pressure plate 1 24 is placed between the two adjacent separation strips 22 on the front side, and a pressure plate 27 is placed between the two adjacent separation strips 22 on the rear side. The pressure plate 1 24 is an iron pressure plate, and the pressure plate 2 27 is an arc-shaped iron pressure plate. The fiber optic protection mechanism 2 also includes a magnetic suction strip 23, an arc-shaped protection strip 24, and a pressure plate 27. A magnetic strip 23 is provided inside the lower surface of the protective seat 26, and the pressure plate 1 24 and the pressure plate 2 27 are both magnetically attracted to the magnetic strip 23. The optical fiber protection mechanism 2 also includes a partition plate 21. The right side of the upper surface of the lower shell 1 is provided with evenly distributed partition plates 21, and the partition plates 21 are located between the arc-shaped protective seat 26 and the auxiliary optical fiber connector 5. The branch optical fibers are respectively located between two adjacent partition plates 21, and the upper ends of the partition plates 21 are in contact with the top wall of the upper shell 7. The branch optical fibers are respectively placed inside the optical fiber separation groove 25, and the branch optical fibers are respectively placed between two adjacent partition plates 21. After each branch optical fiber is placed, the front and rear end pressure plates 1 24 and the pressure plate 2 27 are placed on the upper end of the corresponding optical fiber separation groove 25, and the pressure plates 1 24 and the pressure plates 2 27 are both magnetically attracted to the magnetic strip 23 to prevent the branch optical fiber from jumping out of the optical fiber separation groove 25.

[0025] The working principle of the online special ratio polarization-maintaining optical fiber splitter provided by the utility model is as follows: a worker applies AB glue to the bottom wall of the splitter 3 and then adheres it between the two positioning blocks 10, and applies AB glue to the lower surface of the magnetic strip 23 and then adheres it between the two positioning blocks 2 11, so that the installation of parts is more standardized and neat. After the glue is dry, the main optical fiber of the splitter 3 is connected to the rear side of the main optical fiber connector 4, and the branch optical fibers of the splitter 3 are respectively connected to the rear sides of the auxiliary optical fiber connector 5, and then the branch optical fibers are respectively placed in the interior of the optical fiber separation groove 25, and the branch optical fibers are respectively placed between two adjacent partition plates 21. After each branch optical fiber is placed, the front and rear end pressure plates 1 24 and 27 are placed on the upper end of the corresponding optical fiber separation groove 25, and the pressure plates 1 24 and 27 are placed on the upper end of the pressure plates 1 24 and 27. The plates 27 are all magnetically attracted to the magnetic strips 23 to prevent the branched optical fibers from jumping out of the optical fiber separation grooves 25. After all the branched optical fibers are placed, the upper shell 7 is connected by bolts through the mounting columns 6, and the lower shell 1 is inserted into the interior of the upper shell 7. The front dividing strips 22 are all clamped between the two limiting plates 4 94, and the lower ends of the limiting plates 3 93 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 1 24. The rear dividing strips 22 are all clamped between the two limiting plates 1 91, and the lower ends of the limiting plates 2 92 are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 27, so as to limit the pressure plates 1 24 and 27. No matter how the optical fiber splitter shakes, the pressure plates 1 24 and 27 will never leave their original positions, and the branched optical fibers are always located inside the corresponding optical fiber separation grooves 25.

[0026] It is worth noting that the splitter 3 disclosed in the above embodiment can be a PMPLC fiber splitter.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Online special ratio polarization-maintaining fiber beam splitter, characterized by: It comprises a lower housing (1) and an optical fiber protection mechanism (2); The lower shell (1) has a splitter (3) bonded to the left side of its upper surface by AB glue, a main optical fiber connector (4) is provided on the left side of the front side of the lower shell (1), the main optical fiber of the splitter (3) is connected to the rear side of the main optical fiber connector (4), evenly distributed auxiliary optical fiber connectors (5) are provided on the right side of the front side of the lower shell (1), the branching optical fibers of the splitter (3) are respectively connected to the rear sides of the auxiliary optical fiber connectors (5), symmetrically distributed mounting posts (6) are provided at the four corners of the upper surface edge of the lower shell (1), the upper ends of the mounting posts (6) are connected to the upper shell (7) by bolts, the lower shell (1) is plugged into the interior of the upper shell (7), and a limiting mechanism (9) is provided on the top wall of the upper shell (7); The optical fiber protection mechanism (2) comprises an optical fiber separation groove (25) and an arc-shaped protection seat (26); the arc-shaped protection seat (26) is bonded to the right side of the upper surface of the lower shell (1) by AB glue; the upper surface of the arc-shaped protection seat (26) is provided with evenly distributed optical fiber separation grooves (25); and the branch optical fibers are respectively placed inside the optical fiber separation grooves (25).

2. The in-line special ratio polarization-maintaining optical fiber beam splitter according to claim 1, characterized in that: The optical fiber protection mechanism (2) further comprises a partition bar (22), a first pressure plate (24) and a second pressure plate (27); the front and rear ends of the arc-shaped protection seat (26) are both provided with evenly distributed partition bars (22); the front and rear ends of the optical fiber separation groove (25) are respectively located between two adjacent partition bars (22); a first pressure plate (24) is placed between two adjacent partition bars (22) on the front side; a second pressure plate (27) is placed between two adjacent partition bars (22) on the rear side; the first pressure plate (24) is an iron pressure plate; and the second pressure plate (27) is an arc-shaped iron pressure plate.

3. The in-line special ratio polarization-maintaining optical fiber beam splitter according to claim 2, characterized in that: The optical fiber protection mechanism (2) further comprises a magnetic attraction strip (23), the lower surface of the arc-shaped protection seat (26) is provided with a magnetic attraction strip (23) inside, and the first pressing plate (24) and the second pressing plate (27) are both magnetically attracted to the magnetic attraction strip (23).

4. The in-line special ratio polarization-maintaining optical fiber beam splitter according to claim 1, characterized in that: The optical fiber protection mechanism (2) further comprises a partition plate (21), and the partition plates (21) are evenly distributed on the right side of the upper surface of the lower shell (1), the partition plates (21) are located between the arc-shaped protection seat (26) and the auxiliary optical fiber connector (5), the branch optical fibers are respectively located between two adjacent partition plates (21), and the upper ends of the partition plates (21) are in contact with the top wall of the upper shell (7).

5. The in-line special ratio polarization-maintaining optical fiber beam splitter according to claim 2, characterized in that: The limiting mechanism (9) comprises a limiting plate 1 (91), a limiting plate 2 (92), a limiting plate 3 (93) and a limiting plate 4 (94); the top wall of the upper shell (7) is respectively provided with a symmetrically distributed limiting plate 1 (91) and a symmetrically distributed limiting plate 4 (94); the top wall of the upper shell (7) is respectively provided with a uniformly distributed limiting plate 2 (92) and a limiting plate 3 (93); the limiting plate 2 (92) is located between the two limiting plates 1 (91) and the limiting plate 3 (93); The limiting plates 3 (93) are located between the two limiting plates 4 (94), the front dividing strips (22) are clamped between the two limiting plates 4 (94), the lower ends of the limiting plates 3 (93) are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 1 (24), the rear dividing strips (22) are clamped between the two limiting plates 1 (91), and the lower ends of the limiting plates 2 (92) are respectively in contact with the upper surfaces of the vertically adjacent pressure plates 2 (27).

6. The in-line special ratio polarization-maintaining optical fiber beam splitter according to claim 1, characterized in that: The upper surface of the lower shell (1) is provided with symmetrically distributed positioning blocks (10) and arc-shaped positioning blocks (11); the splitter (3) is clamped between the two positioning blocks (10); and the arc-shaped protection seat (26) is clamped between the two positioning blocks (11).

7. The in-line special ratio polarization-maintaining optical fiber beam splitter according to claim 1, characterized in that: Evenly distributed mounting holes (8) are provided on the side wings on the left and right sides of the upper shell (7).

Images