Multi-channel single-mode optical fiber attenuator

Abstract

The utility model discloses a multi-channel single-mode optical fiber attenuator. The multi-channel single-mode optical fiber attenuator comprises an attenuator and a limiting mechanism, the limiting mechanism comprises sliding columns, arc-shaped clamping plates, pull blocks, limiting protrusions, sliding rails and avoiding pieces, fixing blocks are arranged on the left side and the right side of the upper surface of the attenuator, the sliding columns are slidably connected into sliding openings formed in the side faces of the fixing blocks, and the arc-shaped clamping plates are arranged at the ends, close to the center of the attenuator, of the sliding columns; the ends, away from the center of the attenuator, of the sliding columns are each provided with a pull block, the lower ends of the arc-shaped clamping plates are each provided with a limiting protrusion, the left side and the right side of the upper surface of the attenuator are each provided with a sliding rail, the limiting protrusions are slidably connected to the interiors of the sliding rails on the same side, and the upper ends of the arc-shaped clamping plates are each provided with a receding piece. The single-mode optical fiber and the attenuator are fixed together through the limiting mechanism, and the situation that the attenuation process is affected due to the fact that the single-mode optical fiber falls off is avoided when the attenuation work of the single-mode optical fiber is carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber attenuator technical field, concretely to a kind of multi-channel single-mode optical fiber attenuator. BACKGROUND

[0002] Optical fiber attenuator is a kind of optical device that can reduce optical signal energy, used to attenuate input optical power, avoid distortion due to input optical power overstrength, optical fiber attenuator has multiple types, among them, multi-channel single-mode optical fiber attenuator can independently attenuate control to multiple single-mode optical signal channels, can simultaneously process the optical signal attenuation demand of multiple different optical paths, improve system integration and flexibility;

[0003] The existing multi-channel single-mode optical fiber attenuator is usually inserted by workers multiple single-mode optical fibers into multiple input ports, and then optical signals are transmitted from input ports to output ports through transmission channels, and the attenuation of optical signals is completed by passing through attenuation film in transmission channel.

[0004] The existing multi-channel single-mode optical fiber attenuator has the following problems: since the single-mode optical fiber is directly inserted into the input port, the single-mode optical fiber may fall off during the attenuation work of the single-mode optical fiber, which affects the attenuation process of the single-mode optical fiber, therefore, we propose a kind of multi-channel single-mode optical fiber attenuator. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem of overcoming the defects of the prior art, and provides a kind of multi-channel single-mode optical fiber attenuator, which is fixed together with attenuator by limiting mechanism, avoids the occurrence of the condition that attenuation process is affected due to single-mode optical fiber falling off during the attenuation work of single-mode optical fiber, and can effectively solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of multi-channel single-mode optical fiber attenuator, including attenuator and limiting mechanism.

[0007] The limiting mechanism includes slide column, arc-shaped clamping plate, pull block, limiting protrusion, slide rail and avoiding piece, the upper surface of the attenuator is provided with fixed block on left and right sides, the slide column is slidably connected in the slide opening of the side surface of fixed block, the end of slide column near the center of attenuator is provided with arc-shaped clamping plate, the end of slide column away from the center of attenuator is provided with pull block, the lower end of arc-shaped clamping plate is provided with limiting protrusion, the upper surface of attenuator is provided with slide rail on left and right sides, limiting protrusion is slidably connected in the inside of slide rail on the same side, the upper end of arc-shaped clamping plate is provided with avoiding piece, single-mode optical fiber is fixed together with attenuator by limiting mechanism, avoids the occurrence of the condition that attenuation process is affected due to single-mode optical fiber falling off during the attenuation work of single-mode optical fiber.

[0008] Further, the limiting mechanism further comprises springs one, outer surfaces of the slide columns movably sleeved with the springs one, and the springs one located between the adjacent arc-shaped clamping plates and the fixed blocks away from the center of the attenuator, facilitating fixing the single-mode optical fiber.

[0009] Further, the attenuator is provided with sliding grooves on left and right sides, the sliding grooves are internally connected with the insertion columns in a sliding mode, the insertion columns are provided with pull plates away from the center of the attenuator, the outer surfaces of the insertion columns are fixedly sleeved with limiting rings, and the limiting rings are located in the sliding grooves, facilitating combination of the attenuator into a multi-channel attenuator.

[0010] Further, the outer surfaces of the insertion columns are movably sleeved with springs two, and the springs two are located between the adjacent limiting rings and the side walls of the sliding grooves away from the center of the attenuator, facilitating fixing of the attenuators.

[0011] Further, the attenuator is provided with insertion grooves on left and right sides of the lower surface, the insertion grooves are in communication with the sliding grooves on the same side, the upper surface of the attenuator is provided with insertion blocks corresponding to the insertion grooves, and the side surfaces of the insertion blocks are provided with insertion ports, facilitating combination of the attenuator.

[0012] Further, the attenuator is provided with an input port on the front side, an output port on the rear side, and a transmission channel in the attenuator, facilitating transmission of optical signals.

[0013] Further, the attenuator is provided with an installation groove on the left side, the installation groove is in communication with the transmission channel, the installation groove is internally connected with an installation frame in a sliding mode, and the installation frame is internally provided with an attenuating film, facilitating attenuation of optical signals.

[0014] Further, the attenuator is provided with evenly distributed anti-skid protrusions on left and right sides, facilitating workers to hold the attenuator.

[0015] Compared with the prior art, the multi-channel single-mode optical fiber attenuator has the following advantages:

[0016] The single-mode optical fiber is pressed from the upper direction of the limiting mechanism to the lower direction, the single-mode optical fiber is moved downward while pushing the arc-shaped clamping plates along the slide rails to the two sides through the avoiding pieces until the single-mode optical fiber is moved between the two arc-shaped clamping plates, at this time, the single-mode optical fiber is coaxial with the input port, the springs one drive the arc-shaped clamping plates to move along the slide rails to fix the single-mode optical fiber and the attenuator together, and when the attenuation work of the single-mode optical fiber is performed, the attenuation process is not affected by the single-mode optical fiber falling off. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is a structural schematic view of the utility model;

[0018] Figure 2The structure schematic view of the utility model is shown in the figure;

[0019] Figure 3 The structure schematic view of the utility model is shown in the figure;

[0020] Figure 4 The structure schematic view of the utility model is shown in the figure;

[0021] Figure 5 The structure schematic view of the utility model is shown in the figure;

[0022] Figure 6 The structure schematic view of the utility model is shown in the figure.

[0023] In the figure: 1 attenuator, 2 fixed block, 3 limiting mechanism, 31 slide column, 32 arc-shaped clamping plate, 33 spring one, 34 pull block, 35 limiting protrusion, 36 slide rail, 37 avoiding piece, 4 sliding groove, 5 insertion column, 6 insertion block, 7 insertion slot, 8 insertion port, 9 pull plate, 10 limiting ring, 11 spring two, 12 input port, 13 output port, 14 transmission channel, 15 installation slot, 16 installation frame, 17 attenuating film, 18 anti-skid protrusion. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-6The embodiment provides a technical scheme: a kind of multi-channel single-mode fiber attenuator, including attenuator 1 and limiting mechanism 3, the left and right sides of attenuator 1 are all set with sliding slot 4, sliding slot 4 is slidably connected with the plug post 5 in the inside, the end of plug post 5 away from the center of attenuator 1 is all equipped with pull plate 9, the outer surface of plug post 5 is all fixedly equipped with limiting ring 10, limiting ring 10 is all located in the inside of sliding slot 4, the outer surface of plug post 5 movably is equipped with spring two 11, spring two 11 is all located between the side of adjacent limiting ring 10 away from the center of attenuator 1 and the side wall of sliding slot 4, the left and right sides of attenuator 1 lower surface are all set with insertion slot 7, insertion slot 7 is all communicated with the same side sliding slot 4, the upper surface of attenuator 1 is equipped with the insertion block 6 corresponding with insertion slot 7, the side of insertion block 6 is all set with insertion port 8, the front side of attenuator 1 is equipped with input port 12, the rear side of attenuator 1 is equipped with output port 13, the inside of attenuator 1 is set with transmission channel 14, the left side of attenuator 1 is set with installation slot 15, installation slot 15 is communicated with transmission channel 14, the inside of installation slot 15 is slidably connected with installation frame 16, the inside of installation frame 16 is equipped with attenuating film 17, (attenuating film 17 and the center axis of transmission channel 14 coincide, attenuating film is usually made of material with different optical constants, such as metal attenuating film, dielectric attenuating film, etc., when light is incident on attenuating film, part of light will be reflected on the surface of attenuating film, part of light will be transmitted through attenuating film, the optical properties of attenuating film, such as refractive index, thickness, etc., determine the reflection and transmission ratio of optical signal. By accurately controlling the material and thickness of attenuating film, attenuating film can have specific reflectivity and transmissivity for specific wavelength of light, so as to realize the attenuation of light), the left and right sides of attenuator 1 are all equipped with evenly distributed anti-skid convex 18, staff selects corresponding number of attenuator 1 according to the number of single-mode optical fiber, then pulls the pull plate 9 on one attenuator 1, the pull plate 9 moves the plug post 5 by the plug post 5, then the insertion block 6 on another attenuator 1 is aligned with the insertion slot 7 on the attenuator 1 (the attenuator 1 of the pull plate 9 is pulled), then the insertion block 6 is inserted into the insertion slot 7, (at this time, the center axis of plug post 5 and insertion port 8 coincides), until two attenuators 1 are adhered, then release the pull plate 9, under the action of the resilience of spring two 11, spring two 11 drives plug post 5 to insert into the inside of adjacent insertion port 8 through limiting ring 10, to fix two attenuators 1 together, repeat the operation to assemble the required multiple attenuators 1 into multi-channel attenuator, optical signal is transmitted from input port 12 to output port 13 through transmission channel 14, and attenuation is completed in transmission channel 14 by passing through attenuating film 17, staff can pull out installation frame 16 from installation slot 15, to control the attenuation degree of single-mode optical fiber by replacing attenuating film 17 in installation frame 16;

[0026] The limiting mechanism 3 comprises a slide post 31, an arc-shaped clamping plate 32, a pulling block 34, a limiting protrusion 35, a slide rail 36 and an avoiding piece 37. The upper surface of the attenuator 1 is provided with a fixed block 2 on the left and right sides. The slide post 31 is slidably connected to the slide opening in the side surface of the fixed block 2. The end of the slide post 31 close to the center of the attenuator 1 is provided with the arc-shaped clamping plate 32. The end of the slide post 31 away from the center of the attenuator 1 is provided with the pulling block 34. The lower end of the arc-shaped clamping plate 32 is provided with the limiting protrusion 35. The upper surface of the attenuator 1 is provided with the slide rail 36 on the left and right sides. The limiting protrusion 35 is slidably connected to the inside of the slide rail 36 on the same side. The upper end of the arc-shaped clamping plate 32 is provided with the avoiding piece 37. The limiting mechanism 3 further comprises a spring 33. The outer surface of the slide post 31 is movably sleeved with the spring 33. The spring 33 is located between the side of the adjacent arc-shaped clamping plate 32 away from the center of the attenuator 1 and the fixed block 2. Then the single-mode optical fiber is pressed from the upper surface of the limiting mechanism 3 to the lower surface. Because of the existence of the avoiding piece 37, the single-mode optical fiber is pushed to the left and right sides along the slide rail 36 by the arc-shaped clamping plate 32 through the avoiding piece 37 while moving downward. At this time, the spring 33 is compressed. Until the single-mode optical fiber moves between the two arc-shaped clamping plates 32, the single-mode optical fiber is coaxial with the input port 12. Then the single-mode optical fiber is inserted into the input port 12. Under the action of the spring-back force of the spring 33, the spring 33 drives the arc-shaped clamping plate 33 to move along the slide rail 36 to fix the single-mode optical fiber with the attenuator 1. When it is needed to take down the single-mode optical fiber, the pulling block 34 is pulled to drive the slide post 31 on the left and right sides to drive the arc-shaped clamping plate 32 to move away from each other along the slide rail 36. Then the optical fiber can be taken down.

[0027] The working principle of the multi-channel single-mode optical fiber attenuator is as follows: the staff selects the corresponding number of attenuators 1 according to the number of single-mode optical fibers, then pulls the pull plate 9 on one attenuator 1, the pull plate 9 drives the insertion column 5 to move through the insertion column 5, then the insertion block 6 on the other attenuator 1 is aligned with the insertion slot 7 on the attenuator 1 (the attenuator 1 pulled by the pull plate 9), then the insertion block 6 is inserted into the insertion slot 7, (at this time, the central axes of the insertion column 5 and the insertion port 8 coincide), until the two attenuators 1 are attached, then the pull plate 9 is loosened, under the action of the rebound force of the spring two 11, the spring two 11 drives the insertion column 5 to insert into the inside of the adjacent insertion port 8 through the limiting ring 10, so as to fix the two attenuators 1 together, the required multiple attenuators 1 are assembled into a multi-channel attenuator through repeated operation, then the single-mode optical fiber is pressed from the upward direction of the limiting mechanism 3, due to the existence of the avoiding piece 37, under the limitation of the limiting protrusion 35 and the sliding rail 36, the single-mode optical fiber is pushed along the sliding rail 36 to the two sides through the avoiding piece 37 while moving downward, at this time, the spring one 33 is compressed, until the single-mode optical fiber moves between the two arc-shaped clamping plates 32, (at this time, the single-mode optical fiber is coaxial with the input port 12, then the single-mode optical fiber is inserted into the input port 12), under the action of the rebound force of the spring one 33, the spring one 33 drives the arc-shaped clamping plate 33 to move along the sliding rail 36 to fix the single-mode optical fiber and the attenuator 1 together, when it is needed to take down the single-mode optical fiber, the pull block 34 is pulled, so that the sliding columns 31 on the two sides drive the arc-shaped clamping plates 32 to move away from each other along the sliding rail 36, then the optical fiber can be taken down, the optical signal is transmitted from the input port 12 to the output port 13 through the transmission channel 14, the optical signal passes through the attenuation film 17 in the transmission channel 14 to complete attenuation, the staff can take out the mounting frame 16 from the mounting groove 15, and the attenuation degree of the single-mode optical fiber can be controlled by replacing the attenuation film 17 in the mounting frame 16.

[0028] The above merely describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A multi-channel single-mode fiber attenuator, characterized by: Including attenuator (1) and limit mechanism (3); The limit mechanism (3) further includes spring one (33), and the outer surfaces of the slide columns (31) are movably sleeved with the spring one (33), and the spring one (33) is located between the side, away from the center of the attenuator (1), of the adjacent arc-shaped clamping plates (32) and the fixed block (2).

2. A multi-channel single-mode fiber attenuator according to claim 1, characterized in that: The left and right sides of the attenuator (1) are provided with sliding grooves (4), and the sliding grooves (4) are slidably connected with plug columns (5); the outer surfaces of the plug columns (5) are fixedly sleeved with limiting rings (10), and the limiting rings (10) are located in the sliding grooves (4).

3. A multi-channel single-mode fiber attenuator according to claim 1, characterized in that: The outer surfaces of the plug columns (5) are movably sleeved with spring two (11), and the spring two (11) is located between the side, away from the center of the attenuator (1), of the adjacent limiting rings (10) and the side wall of the sliding groove (4).

4. A multi-channel single-mode fiber attenuator according to claim 3, characterized in that: The left and right sides of the attenuator (1) are provided with sliding grooves (4), and the sliding grooves (4) are slidably connected with plug columns (5); the outer surfaces of the plug columns (5) are fixedly sleeved with limiting rings (10), and the limiting rings (10) are located in the sliding grooves (4).

5. A multi-channel single-mode fiber attenuator according to claim 3, wherein: The left and right sides of the attenuator (1) are provided with sliding grooves (4), and the sliding grooves (4) are slidably connected with plug columns (5); the outer surfaces of the plug columns (5) are fixedly sleeved with limiting rings (10), and the limiting rings (10) are located in the sliding grooves (4).

6. A multi-channel single-mode fiber attenuator as recited in claim 1, wherein: The front side of the attenuator (1) is provided with an input port (12), the rear side of the attenuator (1) is provided with an output port (13), and the inside of the attenuator (1) is provided with a transmission channel (14).

7. A multi-channel single-mode fiber attenuator according to claim 6, characterized in that: The left side of the attenuator (1) is provided with a mounting groove (15) which is in communication with the transmission channel (14), and the inside of the mounting groove (15) is slidably connected with a mounting frame (16); the inside of the mounting frame (16) is provided with an attenuating film (17).

8. A multi-channel single-mode fiber attenuator as recited in claim 1, wherein: The left and right sides of the attenuator (1) are provided with evenly distributed anti-skid protrusions (18).

Images