Magnetic suspension optical fiber attenuation mechanism
By using a magnetic levitation fiber attenuator in the optical fiber attenuator and using magnetic control components to control the movement of the magnetic levitation optical attenuator, the problems of manual adjustment switch lax and increase in volume of the existing optical fiber attenuator are solved, and the precise adjustment of optical signal energy and the reduction of equipment volume are achieved.
Patent Information
- Application Number
- CN202422186009.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The existing fiber attenuators are not closed tightly when manually adjusting the switch, causing light energy to leak from the connection, and mechanical components are required to achieve adjustment, resulting in an increase in the volume of the equipment.
The magnetic levitation fiber attenuation mechanism is adopted to control the up and down movement of the magnetic levitation optical attenuation device through magnetic control components to achieve accurate adjustment of the optical signal energy, avoiding the light leakage problem of manual adjustment switch, and reducing mechanical components inside the equipment and reducing volume.
Accurate adjustment of the energy of the light signal is achieved, avoiding the defect of over-adjustment and blocking all light, reducing the size of the equipment, and improving the flexibility and practicality of the equipment.
Smart Images
Figure CN222965429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical communication equipment, in particular to a magnetic levitation optical fiber attenuation mechanism. Background Art
[0002] An optical fiber attenuator is an optical device used to reduce the energy of an optical signal. It is usually small in size and light in weight, and has the characteristics of high attenuation accuracy, low additional loss, and good stability. It is widely used in the detection and debugging of optical fiber communication systems, equipment, and instruments during the research, development, and production processes.
[0003] Currently, the common optical fiber attenuators on the market mainly include fixed type, male-female type, and adjustable type. The fixed type is mainly flange type, and both sides of the flange optical fiber attenuator are female heads (the female head and male head refer to two different interface forms of the optical fiber attenuator connector); one side of the male-female optical fiber attenuator is a male head and the other side is a female head; there is a spiral nut in the middle of the adjustable optical fiber attenuator, and the parameter of its attenuation value can be adjusted. No matter which type of optical fiber attenuator, in order to achieve the purpose of optical attenuation, generally a light blocking plate or a semiconductor for attenuating light is arranged in the internal closed space, and the purpose of weakening light is achieved by pushing the light blocking plate or moving the attenuation material, but the light blocking effect is not ideal, and there are still the following defects:
[0004] 1. The adjustment switch usually still directly inserts a metal rod into the internal closed space of the optical fiber attenuator housing and rotates to achieve the effect. In order to achieve the adjustable effect, manual adjustment of the switch is required, and this switch directly communicating with the internal closed space may cause some light to leak from the connection.
[0005] 2. In order to achieve manual adjustment, mechanical components cooperating with the adjustment switch need to be embedded inside the housing of the optical fiber attenuator, which requires ensuring sufficient space inside the optical fiber attenuator, resulting in an increase in the volume of the optical fiber attenuator.
[0006] Therefore, it is urgent to improve the structure of the optical fiber attenuator in this field to solve the defects existing in the prior art. Content of the Utility Model
[0007] The purpose of the utility model is to provide a magnetic levitation optical fiber attenuation mechanism, which has a simple structure and is easy to implement. It can achieve precise adjustment of the optical signal energy, avoid the defect of over-adjustment and blocking all light, and has good flexibility and strong practicability.
[0008] The technical solution adopted to achieve the purpose of the utility model is:
[0009] A magnetic levitation optical fiber attenuation mechanism includes an optical attenuation housing. An enclosed optical attenuation cavity is formed inside the optical attenuation housing, and an input fiber collimator and an output fiber collimator are provided on the optical attenuation housing. A magnetic levitation optical attenuation device is provided in the optical attenuation cavity, and a magnetic control component matching the magnetic levitation optical attenuation device is further included. The magnetic control component is used to control the up and down movement of the magnetic levitation optical attenuation device, so as to realize the adjustment of the attenuation degree of the optical signal.
[0010] Further, the magnetic levitation optical attenuation device includes an optical attenuation main body, an upper magnet and a lower magnet that cooperate with the magnetic control component; the optical attenuation main body is a gradient transparent structure, and the transparency gradually changes from completely transparent to completely opaque uniformly from bottom to top. The upper magnet and the lower magnet are respectively fixed at the top and bottom of the optical attenuation main body.
[0011] Further, the magnetic control component includes a top electromagnet and a bottom electromagnet, and the top electromagnet attracts the magnetic levitation optical attenuation device, while the bottom electromagnet repels the magnetic levitation optical attenuation device.
[0012] Further, the top electromagnet includes a first iron core and a first coil. The first iron core is fixed at the top of the inner wall of the optical attenuation cavity, the first coil is wound around the first iron core, and both ends of the first coil are also connected to a first power supply;
[0013] The bottom electromagnet includes a second iron core and a second coil. The second iron core is fixed at the bottom of the inner wall of the optical attenuation cavity, the second coil is wound around the second iron core, and both ends of the second coil are also connected to a second power supply.
[0014] Further, a first voltage control device cooperating with the first power supply in the top electromagnet and a second voltage control device cooperating with the second power supply in the bottom electromagnet are further included.
[0015] Further, a protective housing is further included, and the optical attenuation housing, the first power supply and the second power supply are all placed in the protective housing.
[0016] Further, both the optical attenuation housing and the magnetic levitation optical attenuation device are of a cube structure.
[0017] The beneficial effects of the present utility model are as follows:
[0018] 1. The present utility model cancels the manual adjustment switch of the traditional optical attenuator, and uses a magnetic levitation attenuation material to cooperate with the control component to adjust the movement of the attenuation material. By adopting this control method, the problem of the traditional optical attenuator when the manual adjustment switch is not tightly closed is solved, and the defect that light energy leaks from the connection of the manual adjustment switch is overcome; and after removing the corresponding parts of the manual adjustment switch, the space in the optical attenuation cavity is greatly saved, and the volume of the entire optical attenuator can be further reduced.
[0019] 2. In the present utility model, the optical attenuation main body has a gradient transparent structure, and the transparency gradually changes from completely transparent to completely opaque uniformly from bottom to top, which can achieve precise adjustment of the optical signal energy, avoid the defect of over-adjustment that blocks all light, has good flexibility and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:
[0021] Figure 1 It is a schematic diagram of a partial structure of the whole of the present utility model.
[0022] Figure 2 It is a schematic diagram of the overall structure of the whole of the present utility model.
[0023] Figure 3 It is a schematic diagram of the gradient transparent structure of the magnetic levitation optical attenuation device in an embodiment of the present utility model.
[0024] Figure 4 It is a schematic diagram of the structure of the magnetic control component of the present utility model.
[0025] Figure 5 It is a schematic diagram of adding a protective housing in an embodiment of the present utility model.
[0026] In the figure: 1. Optical attenuation housing; 2. Optical attenuation cavity; 3. Input fiber collimator; 4. Output fiber collimator; 5. Magnetic levitation optical attenuation device; 6. Magnetic control component; 7. First power supply; 8. Second power supply; 9. First voltage control device; 10. Second voltage control device; 11. Protective housing; 12. Input end optical fiber; 13. Output end optical fiber;
[0027] 501. Optical attenuation main body; 502. Upper magnet, 503. Lower magnet;
[0028] 601. Top electromagnet; 602. Bottom electromagnet;
[0029] 611. First iron core; 612. First coil;
[0030] 621. Second iron core; 622. Second coil. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0032] As Figures 1 to 5 shown, a magnetic levitation optical fiber attenuation mechanism includes an optical attenuation housing 1, a closed optical attenuation cavity 2 is formed inside the optical attenuation housing 1, an input optical fiber collimator 3 and an output optical fiber collimator 4 are provided on the optical attenuation housing 1, a magnetic levitation optical attenuation device 5 is provided in the optical attenuation cavity 2, and a magnetic control assembly 6 that matches the magnetic levitation optical attenuation device 5 is further included. The magnetic control assembly 6 is used to control the up and down movement of the magnetic levitation optical attenuation device 5, so as to realize the adjustment of the attenuation degree of the optical signal.
[0033] The present utility model is mainly used for the attenuation of optical signals. The principle of realizing optical attenuation is the same as that of the prior art, that is, blocking or absorbing part of the energy of light to achieve optical attenuation. Compared with the prior art, the main difference of the present utility model is that the manual adjustment switch of the traditional optical attenuator is cancelled, and a magnetic levitation attenuation material is used to cooperate with the control assembly to adjust the movement of the attenuation material. The control method of the present utility model solves the problem when the manual adjustment switch of the traditional optical attenuator is not tightly closed, and overcomes the defect that the optical energy leaks from the connection of the manual adjustment switch. And after removing the corresponding parts of the manual adjustment switch, the space in the optical attenuation cavity 2 is greatly saved, and the volume of the entire optical attenuator can be further reduced.
[0034] The input optical fiber collimator 3 and the output optical fiber collimator 4 are respectively connected to the corresponding input optical fiber 12 and output optical fiber 13 outside, specifically as Figure 1 Figure 2 and Figure 5 shown. In addition, both the optical attenuation housing 1 and the magnetic levitation optical attenuation device 5 of the present utility model are cubic structures. This structure is convenient for processing, has stable placement, is not easy to topple, and has high reliability.
[0035] As Figure 1 、 Figure 2 and Figure 4 shown, the magnetic levitation optical attenuation device 5 includes an optical attenuation main body 501, an upper magnet 502 and a lower magnet 503 that cooperate with the magnetic control assembly 6; the upper magnet 502 and the lower magnet 503 are respectively fixed on the top and bottom of the optical attenuation main body 501.
[0036] The optical attenuation body 501 mainly realizes the blocking or absorption of light. In an embodiment of the present invention, the blocking method uses a traditional light blocking plate. However, when the optical power is too high, most of the light needs to be blocked. At this time, the light blocking plate needs to be accurately adjusted. If not careful, it is easy to over-adjust and block all the light. And when the light blocking plate completely blocks the light, the optical fiber signal is blocked and cannot be transmitted. Therefore, although this embodiment can realize the attenuation of the optical signal, it cannot accurately adjust the energy of the optical signal.
[0037] As Figure 3 shown, in another embodiment of the present invention, the optical attenuation body 501 is a gradually changing transparent structure, and the transparency gradually changes from completely transparent to completely opaque uniformly from bottom to top. The upper magnet 502 and the lower magnet 503 are respectively fixed to the top and bottom of the optical attenuation body 501 by an adhesive method. The material of the optical attenuation body 501 is a semiconductor or an insulator, as long as it can be prepared into a gradually changing transparent structure. In a preferred solution of this embodiment, the material of the optical attenuation body 501 is gradually changing transparent glass. In this solution, the height value of the gradually changing transparent glass is greater than the thickness of the input optical fiber collimator 3 and the output optical fiber collimator 4, so as to ensure that the gradually changing transparent glass can completely cover the position between the input optical fiber collimator 3 and the output optical fiber collimator 4, ensure the reliability when a large attenuation is required, and can realize the accurate adjustment of the energy of the optical signal, avoiding the defect of over-adjusting and blocking all the light, with good flexibility and strong practicability.
[0038] In the present invention, the magnetic control assembly 6 includes a top electromagnet 601 and a bottom electromagnet 602, and the top electromagnet 601 attracts the magnetic levitation optical attenuation device 5, and the bottom electromagnet 602 repels the magnetic levitation optical attenuation device 5.
[0039] The top electromagnet 601 repelling the magnetic levitation optical attenuation device 5 can provide a downward magnetic force for the magnetic levitation optical attenuation device 5 (abbreviation: "top downward magnetic force"), and the bottom electromagnet 602 repelling the magnetic levitation optical attenuation device 5 can also provide an upward magnetic force for the magnetic levitation optical attenuation device 5 (abbreviation: "bottom upward magnetic force"). When the sum of the top downward magnetic force and the gravity of the magnetic levitation optical attenuation device 5 is equal to the bottom upward magnetic force, the magnetic levitation optical attenuation device 5 can be suspended in the optical attenuation cavity 2. When the magnetic levitation optical attenuation device 5 needs to move up and down, the magnitudes of the top downward magnetic force and the bottom upward magnetic force can be controlled. Specifically, when the sum of the top downward magnetic force and the gravity of the magnetic levitation optical attenuation device 5 is less than the bottom upward magnetic force, the magnetic levitation optical attenuation device 5 moves up in the optical attenuation cavity 2 until it reaches equilibrium and suspends; when the sum of the top downward magnetic force and the gravity of the magnetic levitation optical attenuation device 5 is greater than the bottom upward magnetic force, the magnetic levitation optical attenuation device 5 moves down in the optical attenuation cavity 2 until it reaches equilibrium and suspends.
[0040] As Figure 1, Figure 2 , Figure 4 and Figure 5 As shown in Figure 4 , Figure 5 , and Figure 1 in the present utility model, the top electromagnet 601 includes a first iron core 611 and a first coil 612. The first iron core 611 is fixed to the top of the inner wall of the optical attenuation cavity 2, the first coil 612 is wound around the first iron core 611, and both ends of the first coil 612 are also connected to a first power supply 7. The bottom electromagnet 602 includes a second iron core 621 and a second coil 622. The second iron core 621 is fixed to the bottom of the inner wall of the optical attenuation cavity 2, the second coil 622 is wound around the second iron core 621, and both ends of the second coil 622 are also connected to a second power supply 8. In Figure 1 , Figure 2 , Figure 4 and Figure 5 , the arrows indicate the current flow directions.
[0041] The combination of the first iron core 611 and the first coil 612 forms an electromagnet, which generates a magnetic field after being energized (the principle is the magnetic effect principle of current); similarly, the combination of the second iron core 621 and the second coil 622 forms an electromagnet, which generates a magnetic field after being energized. The current flow directions in the first coil 612 and the second coil 622 are designed according to actual needs. The voltage magnitudes of the first power supply 7 and the second power supply 8 are adjusted according to actual needs. In the technical solution of the present utility model, those skilled in the art can conventionally adjust the number of coil turns and the voltage magnitude of the power supply to meet different requirements.
[0042] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, in a specific embodiment of the present utility model, the magnetic poles of each magnet are specifically as follows:
[0043] The N pole of the upper magnet 502 faces upward, the S pole faces downward, and the S pole is pasted on the top of the optical attenuation main body 501;
[0044] The N pole of the lower magnet 503 faces upward, the S pole faces downward, and the N pole is pasted on the top of the optical attenuation main body 501;
[0045] The S pole of the top electromagnet 601 faces upward, the N pole faces downward, and the S pole is pasted on the top of the optical attenuation cavity 2;
[0046] The S pole of the bottom electromagnet 602 faces upward, the N pole faces downward, and the N pole is pasted on the bottom of the optical attenuation cavity 2.
[0047] In other embodiments, the setting method of the magnetic poles can also be adjusted to ensure that both the top electromagnet 601 and the bottom electromagnet 602 are repulsive to the magnetic levitation optical attenuation device 5.
[0048] In the present utility model, it further includes a first voltage control device 9 cooperating with the first power supply 7 in the top electromagnet 601, and a second voltage control device 10 cooperating with the second power supply 8 in the bottom electromagnet 602.
[0049] The first voltage control device 9 and the second voltage control device 10 are electrically connected to the first power supply 7 and the second power supply 8 respectively. The staff controls the states of the first voltage control device 9 and / or the second voltage control device 10 through an external infrared remote controller, so as to change the output voltage magnitudes of the first power supply 7 and the second power supply 8. In actual use, both the first voltage control device 9 and the second voltage control device 10 are transformers. A receiving wave plate is installed inside the transformer. After the receiving wave plate pairs the wave with the external infrared remote controller, an instruction is sent to the current controller by controlling the knob of the external infrared remote controller. The external infrared remote controller controls the voltages of the first voltage control device 9 and / or the second voltage control device 10, thereby changing the currents passing through the first coil 612 and / or the second coil 622, and finally changing the magnetic field magnitudes of the top electromagnet 601 and / or the bottom electromagnet 602, and further changing the magnetic force acting on the magnetically levitated optical attenuation device 5, and finally pushing the magnetically levitated optical attenuation device 5 to move. In the above process, since the optical attenuation main body 501 in the magnetically levitated optical attenuation device 5 is gradually transparent, by moving the suspended magnetically levitated optical attenuation device 5 up and down, the light will be transmitted to different degrees due to the change in the transparency of the magnetically levitated optical attenuation device 5, thereby producing an optical attenuation effect of 1 - 30 dB.
[0050] As Figure 5 shown, in an embodiment of the present utility model, it further includes a protection housing 11, and the optical attenuation housing 1, the first power supply 7 and the second power supply 8 are all placed inside the protection housing 11. The first voltage control device 9 and the second voltage control device 10 are also placed inside the protection housing 11. The protection of the present utility model can, on the one hand, integrate the components inside, which is convenient for overall movement and handling; on the other hand, it can protect the internal components and prevent them from being affected during work.
[0051] The above - described specific embodiments have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above - described are only the specific implementation methods of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the gist of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A magnetically suspended optical fiber attenuation mechanism, comprising an optical attenuation housing (1), a closed optical attenuation cavity (2) formed inside the optical attenuation housing (1), and an input optical fiber collimator (3) and an output optical fiber collimator (4) provided on the optical attenuation housing (1), characterized in that: A magnetically suspended light attenuation device (5) is provided in the light attenuation cavity (2), and also includes a magnetic control component (6) matched with the magnetically suspended light attenuation device (5), wherein the magnetic control component (6) is used to control the upward and downward movement of the magnetically suspended light attenuation device (5), thereby achieving adjustment of the attenuation degree of the light signal.
2. The magnetically suspended optical fiber attenuation mechanism according to claim 1, characterized in that: The magnetic suspension light attenuation device (5) comprises a light attenuation body (501) and an upper magnet (502) and a lower magnet (503) matched with a magnetic control component (6); the light attenuation body (501) is a gradually transparent structure, and the transparency changes from completely transparent to completely opaque evenly from bottom to top, and the upper magnet (502) and the lower magnet (503) are respectively fixed on the top and bottom of the light attenuation body (501).
3. The magnetically suspended optical fiber attenuation mechanism according to claim 1 or 2, characterized in that: The magnetic control component (6) comprises a top electromagnet (601) and a bottom electromagnet (602), wherein the top electromagnet (601) attracts the magnetic suspension light attenuation device (5), and the bottom electromagnet (602) repels the magnetic suspension light attenuation device (5).
4. The magnetically suspended optical fiber attenuation mechanism according to claim 3, characterized in that: The top electromagnet (601) comprises a first iron core (611) and a first coil (612); the first iron core (611) is fixed to the top of the inner wall of the light attenuation cavity (2); the first coil (612) is wound around the first iron core (611); and both ends of the first coil (612) are connected to a first power source (7); The bottom electromagnet (602) comprises a second iron core (621) and a second coil (622). The second iron core (621) is fixed to the bottom of the inner wall of the light attenuation cavity (2). The second coil (622) is wound around the second iron core (621). Both ends of the second coil (622) are also connected to a second power source (8).
5. The magnetically suspended optical fiber attenuation mechanism according to claim 4, characterized in that: It also includes a first voltage control device (9) cooperating with the first power source (7) in the top electromagnet (601), and a second voltage control device (10) cooperating with the second power source (8) in the bottom electromagnet (602).
6. The magnetically suspended optical fiber attenuation mechanism according to claim 4 or 5, characterized in that: It also comprises a protective housing (11), and the light attenuation housing (1), the first power source (7) and the second power source (8) are all placed in the protective housing (11).
7. The magnetically suspended optical fiber attenuation mechanism according to claim 1, 2, 4 or 5, characterized in that: The light attenuation housing (1) and the magnetic suspension light attenuation device (5) are both cubic structures.