Integrated laser attenuator

Abstract

The utility model relates to an integrated laser attenuator, which comprises a laser attenuator and a laser. A laser attenuator and a laser. A laser emission port of the laser extends in the length direction of the integrated laser attenuator, and the laser attenuator is fixed to the side where the laser emission port of the laser is located; the laser attenuator is provided with a through hole extending in the length direction, and the through hole is provided with an input port and an output port. The input port is aligned with the laser emission port, and the output port is used for installing an optical fiber collimator. And a laser emission port of the laser is aligned with an input port of the laser attenuator. Laser directly enters the laser attenuator, is subjected to attenuation adjustment and then directly enters the optical fiber from the output port of the laser attenuator, and only needs to be subjected to one-time lens adjustment at the output port of the laser attenuator. The laser transmission loss is effectively reduced, the adjustment sensitivity is improved, and the low-power stability is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser communication, in particular to an integrated laser attenuator. Background Art

[0002] Lasers consist of a laser working medium, a pumping system, and an optical resonator. Based on the working medium form, they are categorized into gas lasers, solid-state lasers, liquid lasers, and semiconductor lasers. Based on their operating mode, they are categorized into continuous-duration lasers and pulsed lasers. Based on the laser technology used, they are categorized into Q-switched lasers, mode-locked lasers, frequency-doubled lasers, tunable lasers, single-mode lasers, and multi-mode lasers.

[0003] A laser attenuator works by reducing the intensity of a beam through absorption or scattering. It attenuates the laser beam by adding an optical element to the optical path. This optical element is typically made of metal, glass, or quartz. When the laser beam passes through this element, some of the light is absorbed or scattered, weakening the beam.

[0004] The adjustable laser attenuator is usually equipped with a drive rod through a threaded connection. The optical element used to adjust the laser intensity is usually fixed on the drive rod. By adjusting the blocking ratio of the optical element to the light path, the laser power can be controlled.

[0005] However, there is a transmission gap between the driving rod and the base of the laser attenuator. The existence of this transmission gap causes the driving rod to have room for shaking, which easily leads to attenuation fluctuations and is an important reason for the signal fluctuations generated by the laser attenuator.

[0006] Both the input and output ends of the laser attenuator base must be connected to the optical fiber through a collimator. The laser light generated by the laser has a divergent angle, and using it directly results in low transmission efficiency. Spherical lenses are typically used to collimate the light before transmitting it into the optical fiber. However, spherical lenses require high precision in machining and installation, resulting in low yield rates. They are also bulky and inconvenient to use.

[0007] The laser and the laser attenuator are connected through an optical fiber, and then the laser is output through the optical fiber, which usually needs to pass through three sets of optical lenses, resulting in a large transmission power loss. Utility Model Content

[0008] The purpose of the utility model is to provide an integrated laser attenuator which can improve light transmission efficiency.

[0009] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0010] An integrated laser attenuator includes a laser attenuator and a laser. The laser's laser emission port extends along the length of the integrated laser attenuator, and the laser attenuator is fixed to the side of the laser where the laser emission port is located. The laser attenuator is provided with a through hole extending along the length, which has an input port and an output port. The input port is aligned with the laser emission port, and the output port is used to mount a fiber collimator.

[0011] As can be seen, the laser's emission port is aligned with the laser attenuator's input port. Laser light enters the laser attenuator directly, undergoes attenuation adjustment, and then exits the attenuator's output port. Only a single lens adjustment is required at the attenuator's output port before entering the optical fiber. This effectively reduces laser transmission loss, increases adjustment sensitivity, and enhances low-power stability.

[0012] Furthermore, the laser attenuator and the laser are fixed on the base.

[0013] Improved the connection stability between laser attenuator and laser.

[0014] Furthermore, the housing of the laser has positioning ears, and the laser is fixed on the base through the positioning ears.

[0015] The structure is simple and reliable, easy to process and install.

[0016] Furthermore, a supporting platform is provided on the base, and the laser attenuator is fixed on the supporting platform.

[0017] Improved the installation stability of the laser attenuator.

[0018] Furthermore, an output lens is installed on the laser emission port.

[0019] Furthermore, the laser attenuator has a base, a through hole is provided on the base, and a glass sleeve is glued and mounted on the output port, and the glass sleeve is used for gluing and mounting the optical fiber collimator.

[0020] Furthermore, a mounting groove is provided inside the base, the bottom of the mounting groove is connected to the through hole, a first nut and a second nut are glued and installed inside the mounting groove, a rubber ring is provided between the first nut and the second nut, the first nut and the second nut are both threadedly installed on the adjusting rod, a light absorbing component is installed at the end of the adjusting rod close to the through hole, the rubber ring is in a compressed state along the axial direction of the adjusting rod, and the second nut is glued in the mounting groove by flexible glue.

[0021] By first securing the first nut in the mounting slot and inserting the rubber ring, the second nut is then installed in the mounting slot, the adjustment rod is screwed in, and the second nut is adjusted to compress the rubber ring. This allows the threads of the second nut and the first nut to abut against the opposing threaded surfaces on the outer surface of the adjustment rod, thereby eliminating transmission clearance and avoiding attenuation fluctuations. The second nut is bonded to the mounting slot with a flexible adhesive, which prevents rotation of the second nut and applies a tensile force along the axis of the adjustment rod. This tensile force is in the same direction as the elastic thrust applied by the rubber ring to the second nut, both of which are used to push the second nut to compensate for thread transmission clearance, achieving long-lasting zero-clearance transmission and increasing the lifespan of transmission stability.

[0022] Furthermore, a knob is installed on the top of the adjusting rod.

[0023] Furthermore, the adjustment rod and the light absorbing member are integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a top view of the utility model;

[0026] Figure 3 for Figure 2 AA cross-sectional view of . DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0029] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of the features.

[0030] See also Figure 1-Figure 3 The present invention provides an integrated laser attenuator 1000, comprising a laser attenuator 100 and a laser 200. The laser emission port 210 of the laser 200 extends along the length direction 01 of the integrated laser attenuator 1000, and the laser attenuator 100 is fixed to the side of the laser 200 where the laser emission port 210 is located. The laser attenuator 100 is provided with a through hole 101 extending along the length direction 01, and the through hole 101 has an input port 110 and an output port 120. The input port 110 is aligned with the laser emission port 210, and the output port 120 is used to mount a fiber collimator 300.

[0031] Preferably, the laser attenuator 100 and the laser 200 are fixed on a base 400 .

[0032] Preferably, the housing 220 of the laser 200 has a positioning ear 221 , and the laser 200 is fixed on the base 400 via the positioning ear 221 .

[0033] Preferably, a support platform 410 is provided on the base 400, and the laser attenuator 100 is fixed on the support platform 410. Preferably, the laser attenuator 100 is glued to the support platform 410.

[0034] Preferably, the laser attenuator 100 has a base 130. The through hole 101 is provided on the base 130. A glass sleeve 102 is glued and mounted on the output port 120, and the glass sleeve 102 is used for gluing and mounting the optical fiber collimator 300.

[0035] Preferably, a mounting groove 104 is opened inside the base 130, the bottom of the mounting groove 104 is connected to the through hole 101, and the first nut 105 and the second nut 106 are glued and installed inside the mounting groove 104, and a rubber ring 107 is provided between the first nut 105 and the second nut 106. The first nut 105 and the second nut 106 are both threadedly installed on the adjusting rod 108, and a light absorber 109 is installed at the end of the adjusting rod 108 close to the through hole 101. Along the axial direction of the adjusting rod 108, the rubber ring 107 is in a compressed state, and the second nut 106 is glued in the mounting groove 104 by flexible glue.

[0036] During assembly, the first nut 105 is first screwed into the mounting groove 104 and bonded and fixed, then the rubber ring 107 is installed into the mounting groove 104, and the second nut 106 is pushed into the mounting groove 104. Then, the adjusting rod 108 is installed inside the second nut 106 and the first nut 105. Then, the second nut 106 is rotated so that the second nut 106 can approach the first nut 105 and compress the rubber ring 107, so that the threads of the second nut 106 and the first nut 105 can abut against the threads on the outer surface of the adjusting rod 108. Finally, a flexible adhesive is filled between the second nut 106 and the mounting groove 104 to stop the second nut 106 from rotating. This solution not only eliminates transmission clearance and avoids attenuation fluctuations, but also has a simple overall structure, is easy to install, has low production costs, and has a high yield rate.

[0037] Preferably, a knob 1071 is installed on the top of the adjustment rod 108. The setting of the knob 1071 facilitates the rotation operation of the adjustment rod 108, thereby improving the operating comfort.

[0038] Preferably, the adjustment rod 108 and the light absorbing member 109 are integrally formed. The integral forming method can eliminate the instability factors caused by other connection methods, avoid the jitter of the light absorbing member 109 causing the laser attenuation fluctuation, and reduce the risk of the light absorbing member 109 falling off.

[0039] The laser 200 may be any one of a gas laser, a solid laser, a liquid laser, and a semiconductor laser.

[0040] Preferably, an output lens is installed on the laser emission port 210. This helps reduce laser light loss on the inner wall of the through-hole 101. Even with an output lens installed on the laser emission port 210, the total number of laser collimators at the input port 110 and optical fibers connecting the laser 200 and the attenuator 100 is reduced compared to the prior art. Laser transmission loss can still be effectively reduced.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An integrated laser attenuator (1000), comprising a laser attenuator (100) and a laser (200), characterized in that: The laser emission port (210) of the laser (200) extends along the length direction (01) of the integrated laser attenuator (1000), and the laser attenuator (1000) is fixed on the side where the laser emission port (210) of the laser (200) is located; The laser attenuator (100) is provided with a through hole (101) extending along the length direction (01), and the through hole (101) has an input port (110) and an output port (120); The input port (110) is aligned with the laser emission port (210), and the output port (120) is used to install a fiber collimator (300).

2. The integrated laser attenuator (1000) according to claim 1, characterized in that: The laser attenuator (100) and the laser (200) are fixed on a base (400).

3. The integrated laser attenuator (1000) according to claim 2, characterized in that: The housing (220) of the laser (200) has a positioning ear (221), and the laser (200) is fixed on the base (400) via the positioning ear (221).

4. The integrated laser attenuator (1000) according to claim 3, characterized in that: A support platform (410) is provided on the base (400), and the laser attenuator (100) is fixed on the support platform (410).

5. The integrated laser attenuator (1000) according to any one of claims 1 to 4, characterized in that: The laser attenuator (100) has a base (130); the through hole (101) is arranged on the base (130); a glass sleeve (102) is glued and mounted on the output port (120); the glass sleeve (102) is used for gluing and mounting the optical fiber collimator (300).

6. The integrated laser attenuator (1000) according to claim 5, characterized in that: A mounting groove (104) is provided inside the base (130), the bottom of the mounting groove (104) is communicated with the through hole (101), a first nut (105) and a second nut (106) are glued and installed inside the mounting groove (104), a rubber ring (107) is provided between the first nut (105) and the second nut (106), the first nut (105) and the second nut (106) are both threadedly mounted on an adjusting rod (108), a light absorbing member (109) is mounted at the end of the adjusting rod (108) close to the through hole (101), the rubber ring (107) is in a compressed state along the axial direction of the adjusting rod (108), and the second nut (106) is glued in the mounting groove (104) by flexible glue.

7. The integrated laser attenuator (1000) according to claim 6, characterized in that: A knob (1071) is installed on the top of the adjustment rod (108).

8. The integrated laser attenuator (1000) according to claim 7, characterized in that: The adjusting rod (108) and the light absorbing member (109) are integrally formed.

9. The integrated laser attenuator (1000) according to any one of claims 1 to 4, characterized in that: An output lens is installed on the laser emission port (210).

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