An adjustable wide wavelength fiber attenuator

Abstract

The application discloses a kind of adjustable wide wavelength fiber attenuators, including base, the middle part of the upper end of the base is fixedly installed attenuator main body, the right side of the upper end of the attenuator main body is fixedly installed dustproof shell, the front side of the upper end of the base is fixedly installed step motor, the left side of the front end of the base is fixedly installed power button, the middle part of the front end of the base is fixedly provided with power interface, the right side of the front end of the base is fixedly provided with control interface, the attenuator main body, the front end of the attenuator main body is fixedly installed with wiring interface, the front end of the wiring interface is fixedly installed with lens, the outer end of the lens is fixedly installed with high-temperature-resistant transparent protective film.The adjustable wide wavelength fiber attenuator, internal components cooperate with each other, the device is more reasonable, the attenuator can be adjusted for different light quantity and light intensity respectively, can be smoothly adjusted within a certain wide wavelength range, improve the adjustment effect of optical signal.

Description

Technical Field

[0001] The present invention relates to the technical field of attenuators, in particular to an adjustable wide-wavelength optical fiber attenuator. Background Art

[0002] An attenuator is a circuit used to introduce a predetermined attenuation within a specified frequency range. It is generally specified in decibels and its characteristic impedance in ohms. Attenuators are widely used in cable television systems to meet multi-port level requirements, such as controlling amplifier input and output levels and branch attenuation. Attenuators come in two types: passive and active. Active attenuators, combined with other thermal sensors, form variable attenuators, which are installed in amplifiers for automatic gain or slope control circuits. Passive attenuators come in fixed and adjustable versions.

[0003] Attenuators have a variety of application areas, and fiber optic attenuators are one of them. People need fiber optic attenuators to adjust light waves to the most appropriate range for efficient use. The attenuated signal can be directly inserted into one end of the attenuating optical fiber, but its production cost is relatively high. There are some attenuators now, but most of them cannot be connected to smoothly adjust the wavelength, resulting in poor adjustment effect. In addition, the components of the attenuator that transmit signals may be thermally aged after being exposed to light for too long, resulting in a short service life and abnormal internal temperature, which is not conducive to sustainable use. Summary of the Invention

[0004] The present invention aims to provide an adjustable broadband optical fiber attenuator to address the problem in the background art that an attenuated signal can be directly inserted into an attenuating optical fiber at one end. However, the production cost is relatively high. Although some attenuators are currently available, most cannot be connected to smoothly adjust the wavelength, resulting in poor adjustment effect. In addition, the signal transmission components of the attenuator may be thermally aged after being exposed to light for too long, resulting in a short service life and prone to abnormal internal temperature, which is not conducive to sustainable use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable wide-wavelength optical fiber attenuator, comprising a base, an attenuator body fixedly mounted in the middle of the upper end of the base, a dustproof housing fixedly mounted on the right side of the upper end of the attenuator body, a stepper motor fixedly mounted on the front side of the upper end of the base, a power button fixedly mounted on the left side of the front end of the base, a power interface fixedly provided in the middle of the front end of the base, and a control interface fixedly provided on the right side of the front end of the base; the attenuator body, a wiring interface fixedly mounted on the front end of the attenuator body, a lens fixedly mounted on the front end of the wiring interface, a high-temperature resistant transparent protective film fixedly mounted on the outer end of the lens, an SMA interface fixedly mounted on the front end of the lens, and an optical fiber jumper fixedly mounted on the front end of the SMA interface; a driving gear movably mounted inside the attenuator body, a driven gear movably mounted on the rear side of the driving gear, the driving gear and the driven gear fixedly connected by a connecting rod, light attenuation teeth meshingly mounted on the left side of the driving gear, and light intensity attenuation teeth meshingly mounted on the left side of the driven gear.

[0006] Preferably, a variable slit is fixedly provided inside the light attenuation tooth, an empty slot is fixedly provided above the inner side of the light intensity attenuation tooth, and a photochromic mirror is fixedly installed below the inner side of the light intensity attenuation tooth.

[0007] Preferably, a control module is fixedly installed on the inner side of the base, and the control module is electrically connected to the power button, the power interface and the control interface.

[0008] Preferably, the light attenuation teeth and the light intensity attenuation teeth are of the same size, and the driving gear and the driven gear are of the same structure.

[0009] Preferably, the rear end of the lens extends to the interior of the wiring interface, and the optical fiber jumper and the lens are fixedly connected via an SMA interface.

[0010] Preferably, the transmission end at the rear end of the stepping motor and the middle of the driving gear are fixedly installed, and the left sides of the front and rear ends of the attenuator body are of the same structure.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The dustproof shell of this adjustable wide-wavelength optical fiber attenuator can effectively protect the internal gears from dust and other pollutants when they rotate, avoiding the problem of gear stagnation caused by pollutants blocking the gears, thereby improving the flexibility of the device;

[0013] 2. This adjustable wide-wavelength fiber optic attenuator, when the light intensity is too high, the light passes through the variable slit below and can be output through the photochromic mirror. The photochromic mirror will change color when exposed to light, which can reduce the light intensity, facilitate the adjustment of light intensity, facilitate the subsequent use of light, and improve the attenuation effect;

[0014] 3. The high-temperature resistant transparent protective film on the outside of the lens of this adjustable wide-wavelength optical fiber attenuator can effectively protect the lens from being damaged by heat due to prolonged exposure to light, thereby increasing the service life of the lens and improving the operating effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the attenuator body of the present invention;

[0017] Figure 3 Schematic diagram of the cross-sectional structure of the connecting rod of the present invention;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the light attenuation tooth of the present invention.

[0019] In the figure: 1. Base; 2. Attenuator body; 3. Dustproof shell; 4. Stepper motor; 5. Power button; 6. Power interface; 7. Control interface; 8. Wiring interface; 9. Lens; 10. High-temperature resistant transparent protective film; 11. SMA905 interface; 12. Fiber optic jumper; 13. Driving gear; 14. Driven gear; 15. Connecting rod; 16. Light attenuation tooth; 17. Light intensity attenuation tooth; 18. Variable slit; 19. Empty slot; 20. Photochromic mirror; 21. Control module. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4The present invention provides a technical solution: an adjustable wide-wavelength optical fiber attenuator, comprising a base 1, an attenuator body 2 is fixedly mounted in the middle of the upper end of the base 1, a dustproof shell 3 is fixedly mounted on the right side of the upper end of the attenuator body 2, a stepper motor 4 is fixedly mounted on the front side of the upper end of the base 1, a power button 5 is fixedly mounted on the left side of the front end of the base 1, a power interface 6 is fixedly provided in the middle of the front end of the base 1, a control interface 7 is fixedly provided on the right side of the front end of the base 1, an attenuator body 2, a wiring interface 8 is fixedly mounted on the front end of the attenuator body 2, and the front end of the wiring interface 8 is fixed. A lens 9 is installed, and a high-temperature resistant transparent protective film 10 is fixedly installed on the outer end of the lens 9. An SMA905 interface 11 is fixedly installed on the front end of the lens 9, and an optical fiber jumper 12 is fixedly installed on the front end of the SMA905 interface 11. A driving gear 13 is movably installed inside the attenuator body 2, and a driven gear 14 is movably installed on the rear side of the driving gear 13. The driving gear 13 and the driven gear 14 are fixedly connected by a connecting rod 15. A light attenuation tooth 16 is meshed with the left side of the driving gear 13, and a light intensity attenuation tooth 17 is meshed with the left side of the driven gear 14.

[0022] Furthermore, a variable slit 18 is fixedly provided inside the light attenuation tooth 16, an empty slot 19 is fixedly provided above the inner side of the light intensity attenuation tooth 17, and a photochromic mirror 20 is fixedly installed below the inner side of the light intensity attenuation tooth 17. By setting the variable slit 18 to narrow from wide to narrow from the outside to the inside, the optical fiber can be smoothly adjusted within a wide wavelength within a certain range, and the variable slit 18 is symmetrical up and down, and the wavelength signal value can be continuously adjusted by rotation, and the adjustment effect is good. When the light intensity is normal, the light is transmitted through the lens 9 to the upper variable slit 18 and then transmitted out through the empty slot 19. When the light intensity is too high, the light is rotated to pass through the lower variable slit 18 and then through the photochromic mirror 20 to reduce the light intensity before output, thereby improving the utilization effect and use effect of the optical fiber.

[0023] Furthermore, a control module 21 is fixedly installed on the inner side of the base 1, and the control module 21 is electrically connected to the power button 5, the power interface 6 and the control interface 7. This arrangement allows the device to be used after connection, making the device more reasonable and effective, and improving the working efficiency of the device.

[0024] Furthermore, the light attenuation teeth 16 and the light intensity attenuation teeth 17 are of the same size, and the driving gear 13 and the driven gear 14 have the same structure. By installing the driving gear 13 and the driven gear 14, the motor drives them to rotate, which can link the meshing light attenuation teeth 16 and the light intensity attenuation teeth 17 to rotate synchronously, making the device more flexible and able to smoothly attenuate a wide wavelength within a certain range through the rotation angle, thereby improving the attenuation effect of the device.

[0025] Furthermore, the rear end of the lens 9 extends to the interior of the wiring interface 8, and the optical fiber jumper 12 and the lens 9 are fixedly connected via the SMA905 interface 11. This arrangement allows the optical fiber jumper 12 to be flexibly and stably connected to the wiring interface 8 on the attenuator body 2, ensuring the stability and sustainability of optical fiber signal transmission. The SMA905 interface 11 is not large in size and can be freely adjusted and replaced with the corresponding optical fiber jumper 12 according to needs, making the device more convenient and flexible to use.

[0026] Furthermore, the transmission end at the rear end of the stepper motor 4 and the middle of the driving gear 13 are fixedly installed, and the left sides of the front and rear ends of the attenuator body 2 are of the same structure. This arrangement allows people to control the start of the stepper motor 4 through a computer externally to link the rotation of the internal gears, and stop adjustment at any time according to the changes in the signal value displayed by the control computer, thereby improving the adjustment effect and flexibility of the device.

[0027] Working principle: This device is an adjustable wide-wavelength fiber optic attenuator that can be used to attenuate optical signals. During use, light passes through the optical fiber jumper 12 and the SMA905 interface 11 to reach the lens 9, and then the stepper motor 4 is controlled to rotate through the external computer device, thereby driving the connecting rod 15 to connect the active gear 13 and the driven gear 14 to rotate synchronously. The light attenuation teeth 16 and the light intensity attenuation teeth 17 that are meshed and connected have different light wave signal values ​​at different angles. The variable slit 18 on the light attenuation teeth 16 changes from wide to narrow from outside to inside, and can be smoothly adjusted within a fixed range of wide wavelengths. This setting can control the amount of light output. When the light intensity is too high, even if the light is adjusted to the minimum, the signal may be too high, which will affect people's utilization effect. At this time, the empty slot 19 and the photochromic mirror 20 set on the light intensity attenuation teeth 17 can flexibly adjust the light intensity to adjust the light intensity in the environment. When the illumination intensity is normal, the light is normally transmitted to the empty slot 19 for output through the variable slit 18. The variable slit 18 is symmetrical up and down. When the light intensity is too high, the light can be output through the light attenuation teeth 16, the light intensity attenuation teeth 17 and the rotation of the driving gear 13 and the driven gear 14 after passing through the variable slit 18 through the photochromic mirror 20. The photochromic mirror 20 will change color when it encounters light, which can reduce the intensity of the light and facilitate the adjustment of the light intensity. The adjustment effect of the device is good. The dustproof shell 3 can effectively protect the gears from entering pollutants such as dust and impurities, avoiding the problem of stagnation in the rotation of the gears. The operation effect of the device is good. The high-temperature resistant transparent protective film 10 arranged outside the lens 9 can effectively protect the lens 9 from being damaged by heat due to excessive exposure to light, thereby increasing the service life of the lens 9 and allowing the device to operate continuously. The device has a good use effect. The various components of the device cooperate with each other to make the device as a whole more reasonable and effectively improve work efficiency.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. An adjustable wide-wavelength optical fiber attenuator, comprising a base (1), characterized in that: The attenuator body (2) is fixedly mounted on the middle of the upper end of the base (1), a dustproof shell (3) is fixedly mounted on the right side of the upper end of the attenuator body (2), a stepper motor (4) is fixedly mounted on the front side of the upper end of the base (1), a power button (5) is fixedly mounted on the left side of the front end of the base (1), a power interface (6) is fixedly provided in the middle of the front end of the base (1), a control interface (7) is fixedly provided on the right side of the front end of the base (1), the attenuator body (2), a wiring interface (8) is fixedly mounted on the front end of the attenuator body (2), a lens (9) is fixedly mounted on the front end of the wiring interface (8), and the outer surface of the lens (9) is fixedly mounted. A high-temperature resistant transparent protective film (10) is fixedly installed at the end, an SMA905 interface (11) is fixedly installed at the front end of the lens (9), an optical fiber jumper (12) is fixedly installed at the front end of the SMA905 interface (11), a driving gear (13) is movably installed inside the attenuator body (2), a driven gear (14) is movably installed at the rear side of the driving gear (13), the driving gear (13) and the driven gear (14) are fixedly connected by a connecting rod (15), a light attenuation tooth (16) is meshedly installed on the left side of the driving gear (13), and a light intensity attenuation tooth (17) is meshedly installed on the left side of the driven gear (14); A variable slit (18) is fixedly provided inside the light attenuation tooth (16), an empty slot (19) is fixedly provided above the inner side of the light intensity attenuation tooth (17), and a photochromic mirror (20) is fixedly installed below the inner side of the light intensity attenuation tooth (17); A control module (21) is fixedly mounted on the inner side of the base (1), and the control module (21) is electrically connected to the power button (5), the power interface (6) and the control interface (7); The light attenuation teeth (16) and the light intensity attenuation teeth (17) are of the same size, and the driving gear (13) and the driven gear (14) are of the same structure; The rear end of the lens (9) extends to the interior of the wiring interface (8), and the optical fiber jumper (12) and the lens (9) are fixedly connected via an SMA905 interface (11).

2. The adjustable wide-wavelength optical fiber attenuator according to claim 1, characterized in that: The transmission end at the rear end of the stepping motor (4) and the middle of the driving gear (13) are fixedly installed, and the left sides of the front and rear ends of the attenuator body (2) have the same structure.

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