Optical fiber splitter supporting triaxial fine tuning and free gating

Abstract

The utility model discloses an optical fiber splitter supporting three-axis fine tuning and free gating, which is characterized in that a plurality of optical fiber flanges are matched with a splitting device to form a plurality of coupling channels and can be connected with a plurality of optical probes at the same time; different optical probe signals can enter the spectrograph by switching different channels so as to achieve the purpose of rapidly detecting sample information of different production lines, fine adjustment on the X-axis and the Y-axis can be achieved through the arrangement of the adjusting device after the optical fiber flange is installed, then the actual position and the theoretical position of the optical fiber flange are calibrated, and the detection accuracy is improved. According to the optical fiber branching device, the problem of signal attenuation is effectively avoided, meanwhile, position adjustment of the branching device on the Y axis is achieved through arrangement of the Z-axis adjusting mechanism, so that position adjustment of the parabolic mirror is achieved, focal length adjustment is achieved by adjusting the distance between the parabolic mirror and the optical fiber flange, and then the transmission quality of light beams between the optical fiber flange and the parabolic mirror is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of fiber optic splitters, and in particular to a fiber optic splitter that supports three-axis fine-tuning and free gating. Background Technology

[0002] Online detection spectrometers collect sample information by illuminating the sample with an optical probe. The collected beam is transmitted to the spectrometer via optical fiber for spectral analysis, thereby obtaining the sample's internal composition. Typically, a spectrometer is equipped with only one optical channel to receive sample information. However, in scenarios where multiple production lines operate simultaneously, multiple spectrometers are often needed to meet testing requirements. To save testing costs and improve efficiency, fiber optic splitters are typically used to connect multiple optical probes to a single spectrometer. By switching the connection channel, different optical probes can be connected to the spectrometer in turn.

[0003] Another type of fiber optic beam splitter on the market has similar functions to the above requirements. It uses a combination of lenses and polished mirrors and switches between different optical probes and spectrometers by rotating a motor. However, this type of fiber optic beam splitter mainly ensures the positional accuracy of the fiber optic flange through mechanical processing. After installation and fixation, it cannot be finely adjusted in position. However, mechanical processing errors generally exist. The accumulation of processing errors of various parts of the instrument will lead to an error between the actual position and the theoretical position of the fiber optic flange. Once the fiber optic flange is fixed, the position of the received beam is difficult to coincide with the theoretical position, resulting in severe signal attenuation of the beam entering the fiber after passing through the reflector. In practical applications, the coupling efficiency is less than 50%, and the coupling efficiency between different channels is inconsistent. The low coupling efficiency will weaken the optical signal and reduce the signal-to-noise ratio of the system. If the illumination power of the optical probe is increased to enhance the optical signal, it may cause the sample to be burned and damaged. Therefore, this application proposes a fiber optic splitter that supports fine adjustment and free gating. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an optical fiber splitter that supports three-axis fine-tuning and free gating.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fiber optic splitter supporting three-axis fine-tuning and free gating includes a housing, a splitting device, multiple adjustment devices, and a fiber optic flange connected to the optical fiber. Specifically, an output hole for optical signal output is opened at the center point of one end of the housing, and multiple input holes for optical signal input are evenly opened near the circumference of the output hole. Each output hole and input hole is equipped with an adjustment device located outside the housing. The adjustment device includes a Y-axis adjustment mechanism, an X-axis adjustment mechanism on the Y-axis adjustment mechanism, and the fiber optic flange is located on the X-axis adjustment mechanism. Both the X-axis and Y-axis adjustment mechanisms have clearance holes for optical signals to enter the output hole or input hole. The splitting device includes a Z-axis adjustment mechanism arranged inside the housing. The Z-axis adjustment mechanism has a support arm, and a rotating shaft is rotatably mounted on the support arm. One end of the rotating shaft is connected to the rotating arm corresponding to the fiber optic flange, and the other end is connected to a drive mechanism mounted on the support arm. Both ends of the rotating arm are equipped with polished mirrors, and one polished mirror is always aligned with the output hole, and the other polished mirror is always aligned with one of the input holes.

[0007] Preferably, the drive mechanism has a power output shaft, which is detachably connected to the rotating shaft via a coupling.

[0008] Preferably, the Z-axis adjustment mechanism includes a dovetail groove mounted on the housing and extending through it. A dovetail slider that can move along the Z-axis direction is slidably connected to the dovetail groove, and a support arm is fixed to the dovetail slider. The Z-axis adjustment mechanism also includes a handle and a fixing plate mounted on the housing near the through end of the dovetail groove. A control rod that abuts against the dovetail slider is screwed onto the fixing plate, and the handle is located on the fixing plate and connected to the control rod.

[0009] Preferably, a tension spring is connected between the wall of the dovetail groove and the dovetail slider along the direction in which the dovetail slider can move.

[0010] Preferably, the rotating arm is equipped with a counterweight at one end for mounting the polished mirror which is aligned with the output hole.

[0011] Preferably, the Y-axis adjustment mechanism includes a base mounted on the housing, a mounting groove on the side of the base away from the housing, the top of the mounting groove and one adjacent side of the mounting groove being through, a slider that can slide along the Y-axis being mounted in the mounting groove, and a first adjustment rod that is rotatably connected to the slider being screwed to the side of the mounting groove on the Y-axis, and multiple return springs connected to the slider being provided, and clearance holes on the Y-axis adjustment mechanism being opened on both the mounting groove and the slider.

[0012] Preferably, the X-axis adjustment mechanism includes an adjustment block and a fixing groove on the slider. The fixing groove passes through one side of the X-axis. The adjustment block is assembled in the fixing groove by a linear module and can slide along the X-axis direction. A notch is provided at the top of the fixing groove, and the fiber optic flange is assembled on the adjustment block through the notch. The clearance hole on the X-axis adjustment mechanism is provided on the slider.

[0013] An adjusting spring connects the part of the adjusting block away from the through side of the fixed groove to the side of the fixed groove on the Y-axis. The part of the adjusting block corresponding to the through side of the fixed groove is an inclined surface. The slider is located above the through side of the fixed groove and is screwed with a second adjusting rod that abuts against the inclined surface.

[0014] Preferably, the adjusting device further includes a locking plate, which covers the base and the slider respectively and is connected as a whole by bolts. The locking plate has a channel for avoiding the fiber optic flange and a locking rod with a through notch on the side near the housing that abuts against the adjusting block.

[0015] Preferably, the locking plate has an adjustment groove for mounting bolts, and the adjustment groove of the locking plate corresponding to the base part is opened along the Y-axis direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model utilizes multiple fiber optic flanges and a splitter device to form multiple coupling channels, which can simultaneously connect multiple optical probes. By switching different channels, signals from different optical probes can be sent to the spectrometer to achieve the purpose of quickly detecting sample information from different production lines.

[0018] 2. After installation, the fiber optic flange of this utility model can be finely adjusted on the X and Y axes through the setting of the adjustment device, thereby calibrating the actual position of the fiber optic flange with the theoretical position and effectively avoiding the occurrence of signal attenuation problems.

[0019] 3. This utility model achieves position adjustment of the polished mirror by arranging the Z-axis adjustment mechanism, and achieves focal length adjustment by adjusting the distance between the polished mirror and the fiber optic flange, thereby ensuring the transmission quality of the light beam between the fiber optic flange and the polished mirror. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the shell structure of this utility model;

[0021] Figure 2 This is an assembly diagram of the fiber optic flange and adjustment device of this utility model;

[0022] Figure 3 This is an assembly diagram of the shunt device of this utility model;

[0023] Figure 4 This is an overall schematic diagram of the adjusting device of this utility model;

[0024] Figure 5 This is a cross-sectional structural schematic diagram of the adjustment device of this utility model;

[0025] Figure 6 This is a schematic diagram of the Y-axis adjustment mechanism of this utility model;

[0026] Figure 7 This is a schematic diagram of the base structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the slider of this utility model.

[0028] Figure reference numerals: 1. Housing; 2. Divider device; 21. Z-axis adjustment mechanism; 211. Dovetail slide; 212. Dovetail slider; 213. Handle; 214. Fixing plate; 215. Control lever; 216. Tension spring; 22. Support arm; 23. Rotating shaft; 24. Rotating arm; 25. Drive mechanism; 26. Polished mirror; 27. Counterweight; 3. Fiber optic flange; 4. Adjustment device; 41. Y-axis adjustment mechanism; 411. Base; 412. Assembly slot; 413. Slider; 414. First adjustment rod; 415. Return spring; 42. X-axis adjustment mechanism; 421. Adjustment block; 422. Fixing slot; 423. Linear module; 424. Adjustment spring; 425. Second adjustment rod; 43. Clearance hole; 44. Locking plate; 45. Adjustment slot. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0030] Example 1

[0031] like Figure 1-4 The fiber optic splitter shown includes a housing 1 and a splitting device 2, as well as multiple adjustment devices 4 and fiber optic flanges 3 connected to optical fibers. The multiple fiber optic flanges 3 cooperate with the splitting device 2 to form multiple coupling channels, which can connect multiple optical probes at the same time. By switching different channels, the signals of different optical probes can be sent to the spectrometer to achieve the purpose of quickly detecting sample information from different production lines.

[0032] Specifically, such as Figure 1 As shown, an output hole for outputting optical signals is provided at the center point of one end of the housing 1, and multiple input holes for inputting optical signals are evenly provided near the circumference of the output hole, such as... Figure 2 As shown, each output port and input port is equipped with an adjustment device 4 located outside the housing 1. The structure of the adjustment device 4 is as follows: Figure 4 As shown, it includes a Y-axis adjustment mechanism 41, an X-axis adjustment mechanism 42 on the Y-axis adjustment mechanism 41, and an optical fiber flange 3 on the X-axis adjustment mechanism 42. Both the X-axis adjustment mechanism 42 and the Y-axis adjustment mechanism 41 have clearance holes 43 for allowing optical signals to enter the output or input port. The structure of the splitter device 2 is as follows: Figure 3 As shown, it includes a Z-axis adjustment mechanism 21 arranged inside the housing 1. The Z-axis adjustment mechanism 21 is provided with a support arm 22. A rotating shaft 23 is rotatably mounted on the support arm 22. One end of the rotating shaft 23 corresponding to the fiber optic flange 3 is connected to a rotating arm 24, and the other end is connected to a drive mechanism 25 mounted on the support arm 22. Both ends of the rotating arm 24 are provided with polished mirrors 26, and one of the polished mirrors 26 is always in the same straight line as the output hole, and the other polished mirror 26 is always in the same straight line as one of the input holes.

[0033] In practice, multiple optical probes collecting information from different samples are connected one by one to multiple fiber optic flanges 3 located at the input holes via optical fibers. After being split by the splitting device 2, the sample information from one of the optical probes is transmitted to the spectrometer via the fiber optic flange 3 located at the output hole for detection. Specifically, the light beam emitted by the optical fiber connecting the optical probes shines through the clearance hole 43 onto the polished mirror 26, which is always aligned with the input hole, and is refracted onto the polished mirror 26, which is always aligned with the output hole. Then, the light signal is transmitted through the output hole to the spectrometer for detection via optical fiber. By driving the rotating arm 24 to rotate through the driving mechanism 25, the optical probe corresponding to the polished mirror 26, which is always aligned with the input hole, can be changed. This allows for the selective feedback of sample information collected by different optical probes to the spectrometer for detection, thereby achieving the goal of rapidly detecting sample information from different production lines.

[0034] In practical applications, once the fiber optic flange 3 is fixed in position, its installation position can be finely adjusted using the Y-axis adjustment mechanism 41 and the X-axis adjustment mechanism 42 to calibrate the actual position of the fiber optic flange 3 with the theoretical position. This ensures that the position of the received beam coincides with the theoretical position, preventing deviation of the beam during transmission between the fiber optic flange 3 and the polished mirror 26. It also ensures the coupling efficiency between different optical probes and the spectrometer, preventing optical signal attenuation due to coupling efficiency.

[0035] like Figure 4-8As shown, the Y-axis adjustment mechanism 41 includes a base 411 mounted on the housing 1. A mounting groove 412 is provided on the side of the base 411 away from the housing 1. The top of the mounting groove 412 and one of its adjacent sides are both through. A slider 413 that can slide along the Y-axis is mounted in the mounting groove 412. A first adjusting rod 414 that is rotatably connected to the slider 413 is screwed onto the side of the mounting groove 412 located on the Y-axis. Multiple return springs 415 connected to the slider 413 are also provided. The clearance hole 43 on the Y-axis adjustment mechanism 41 is simultaneously opened on the mounting groove 412 and the slider 413. By rotating the first adjusting rod 414, the slider 413 is pushed to move away from the return springs 415. During this process, the return springs 415 are stretched. When the first adjusting rod 414 is rotated in the opposite direction, the force pushing the slider 413 disappears. At this time, the return springs 415 contract, causing the first adjusting rod 414 to return to its original position, thereby realizing the adjustment of the position of the slider 413 on the Y-axis.

[0036] The aforementioned X-axis adjustment mechanism 42 includes an adjustment block 421 and a fixing groove 422 formed on the slider 413. The fixing groove 422 passes through one side corresponding to the X-axis. The adjustment block 421 is assembled in the fixing groove 422 via a linear module 423 and is slidable along the X-axis direction. A notch is formed at the top of the fixing groove 422, and the fiber optic flange 3 is assembled on the adjustment block 421 through the notch. A clearance hole 43 on the X-axis adjustment mechanism 42 is formed on the slider 413. An adjustment spring 424 is connected between the part of the adjustment block 421 away from the through side of the fixing groove 422 and the side of the fixing groove 422 located on the Y-axis. The part of the adjustment block 421 corresponding to the through side of the fixing groove 422 is an inclined surface. The slider 413 is located on the through side of the fixing groove 422. A second adjusting rod 425 is screwed onto the upper part and rests against the inclined surface. Rotating the second adjusting rod 425 moves it towards the bottom of the fixed groove 422. At this time, the second adjusting rod 425 rests against the inclined surface of the adjusting block 421. The second adjusting rod 425 continues to move towards the bottom of the fixed groove 422, which will push the adjusting block 421 to move along the direction close to the adjusting spring 424. During this process, the adjusting spring 424 is compressed. When the second adjusting rod 425 is rotated in the opposite direction, the second adjusting rod 425 moves away from the bottom of the fixed groove 422. At this time, the compressed adjusting spring 424 pushes the adjusting block 421 to move along the direction of the original adjusting spring 424 to achieve reset, thereby realizing the position adjustment of the adjusting block 421 on the X-axis.

[0037] In practice, the position of the adjusting block 421 on the Y-axis is changed by adjusting the position of the slider 413 on the Y-axis, and the position of the fiber optic flange 3 on the X and Y axes can be adjusted by adjusting the position of the adjusting block 421 on the X-axis.

[0038] As a preferred embodiment of the above, such as Figure 4As shown, the aforementioned adjustment device 4 also includes a locking plate 44, which covers the base 411 and the slider 413 respectively, and is connected as a whole by bolts. The locking plate 44 has a channel for avoiding the fiber optic flange 3, and has a through notch on the side near the housing 1 and a locking rod that abuts against the adjustment block 421 to lock the position of the slider 413 on the Y-axis and the position of the adjustment block 421 on the X-axis. In specific implementation, tightening the bolts will cause the locking plate 44 to press against the slider 413 and the locking rod to press against the adjustment block 421, thus fixing the positions of the slider 413 and the adjustment block 421 and making them impossible to adjust. When it is necessary to adjust the positions of the slider 413 and the adjustment block 421, loosening the bolts will loosen the locking plate 44 and the slider 413, and the locking rod and the adjustment block 421.

[0039] Specifically, the locking plate 44 is provided with an adjustment groove 45 for mounting bolts, and the adjustment groove 45 of the locking plate 44 corresponding to the base 411 is opened along the Y-axis direction. When the slider 413 is adjusted in position on the Y-axis, the adjustment groove 45 opened along the Y-axis direction allows the locking plate 44 to also be adjusted in position along the Y-axis, thereby allowing the position of the locking rod to also move with the movement of the adjustment block 421, so that the bolt corresponding to the adjustment block 421 always corresponds to the adjustment block 421.

[0040] As a preferred embodiment of the above, the drive mechanism 25 has a power output shaft, which is detachably connected to the rotating shaft 23 via a coupling.

[0041] As a preferred embodiment of the above, such as Figure 3As shown, the Z-axis adjustment mechanism 21 includes a dovetail groove 211 that is mounted on the housing 1 and extends through it. A dovetail slider 212 that can move along the Z-axis direction is slidably connected to the dovetail groove 211, and a support arm 22 is fixed to the dovetail slider 212. The Z-axis adjustment mechanism 21 also includes a handle 213 and a fixing plate 214 mounted on the housing 1 near the through end of the dovetail groove 211. A control rod 215 that abuts against the dovetail slider 212 is screwed onto the fixing plate 214. The handle 213 is located on the fixing plate 214 and connected to the control rod 215. Along the movable direction of the dovetail slider 212, the groove wall of the dovetail groove 211 and the dovetail slider 212 are... A tension spring 216 is connected between them. By rotating the handle 213, the control lever 215 can be moved closer to or away from the dovetail slider 212. When the control lever 215 is continuously close to the dovetail slider 212, it will push the dovetail slider 212 to move and thus compress the tension spring 216. When the control lever 215 moves away from the dovetail slider 212, the compressed tension spring 216 will reset and thus push the dovetail slider 212 to reset. During the movement of the dovetail slider 212, it will drive the support arm 22 to move, thereby changing the distance between the polished mirror 26 and the fiber optic flange 3, so as to adjust the focal length of the polished mirror 26 and thus ensure the transmission quality of the beam between the fiber optic flange 3 and the polished mirror 26.

[0042] As a preferred embodiment of the above, the rotating arm 24 is used to assemble the polished mirror 26 which is in the same straight line as the output hole. One end of the rotating arm 24 is provided with a counterweight 27 so that the mass of the two ends of the rotating arm 24 is balanced during the rotation process, so that the rotation process of the rotating arm 24 is smooth.

[0043] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A fiber optic splitter supporting three-axis fine-tuning and free gating, characterized in that, It includes a housing (1) and a branching device (2), as well as multiple adjustment devices (4) and an optical fiber flange (3) connected to the optical fiber; An output hole for outputting optical signals is provided at the center point of one end of the housing (1). Multiple input holes for inputting optical signals are evenly provided near the circumference of the output hole. Each output hole and input hole is equipped with an adjustment device (4) located outside the housing (1). The adjustment device (4) includes a Y-axis adjustment mechanism (41). An X-axis adjustment mechanism (42) is provided on the Y-axis adjustment mechanism (41). The fiber optic flange (3) is provided on the X-axis adjustment mechanism (42). Both the X-axis adjustment mechanism (42) and the Y-axis adjustment mechanism (41) have clearance holes (43) for the optical signals to enter the output hole or input hole. The splitter device (2) includes a Z-axis adjustment mechanism (21) arranged inside the housing (1). The Z-axis adjustment mechanism (21) is provided with a support arm (22). A rotating shaft (23) is rotatably mounted on the support arm (22). One end of the rotating shaft (23) corresponding to the fiber optic flange (3) is connected to a rotating arm (24), and the other end is connected to a drive mechanism (25) mounted on the support arm (22). Both ends of the rotating arm (24) are provided with polished mirrors (26), and one of the polished mirrors (26) is always on the same straight line as the output hole, and the other polished mirror (26) is always on the same straight line as one of the input holes.

2. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 1, characterized in that, The drive mechanism (25) has a power output shaft, which is detachably connected to the rotating shaft (23) via a coupling.

3. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 1, characterized in that, The Z-axis adjustment mechanism (21) includes a dovetail slide groove (211) that is mounted on the housing (1) and extends through it. A dovetail slider (212) that can move along the Z-axis direction is slidably connected to the dovetail slide groove (211), and the support arm (22) is fixed on the dovetail slider (212). The Z-axis adjustment mechanism (21) also includes a handle (213) and a fixing plate (214) mounted on the housing (1) near the through end of the dovetail slide (211). A control rod (215) is screwed onto the fixing plate (214) and abuts against the dovetail slider (212). The handle (213) is located on the fixing plate (214) and connected to the control rod (215).

4. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 3, characterized in that, Along the movable direction of the dovetail slider (212), a tension spring (216) is connected between the groove wall of the dovetail groove (211) and the dovetail slider (212).

5. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 1, characterized in that, The rotating arm (24) is used to assemble the polished mirror (26) which is in the same straight line as the output hole, and one end is provided with a counterweight (27).

6. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 1, characterized in that, The Y-axis adjustment mechanism (41) includes a base (411) mounted on the housing (1). The base (411) has an assembly groove (412) on the side away from the housing (1). The top of the assembly groove (412) and one of its adjacent sides are through. A slider (413) that can slide along the Y-axis is mounted in the assembly groove (412). A first adjustment rod (414) that is rotatably connected to the slider (413) is screwed to the side of the assembly groove (412) located on the Y-axis. Multiple return springs (415) connected to the slider (413) are also provided. The clearance hole (43) on the Y-axis adjustment mechanism (41) is opened on both the assembly groove (412) and the slider (413).

7. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 6, characterized in that, The X-axis adjustment mechanism (42) includes an adjustment block (421) and a fixing groove (422) opened on the slider (413). The fixing groove (422) is through one side corresponding to the X-axis. The adjustment block (421) is assembled in the fixing groove (422) through a linear module (423) and can slide along the X-axis direction. A notch is opened at the top of the fixing groove (422), and the fiber optic flange (3) is assembled on the adjustment block (421) through the notch. The clearance hole (43) on the X-axis adjustment mechanism (42) is opened on the slider (413). An adjusting spring (424) is connected between the part of the adjusting block (421) away from the through side of the fixed groove (422) and the side of the fixed groove (422) located on the Y-axis. The part of the adjusting block (421) corresponding to the through side of the fixed groove (422) is an inclined surface. The slider (413) is located above the through side of the fixed groove (422) and is screwed with a second adjusting rod (425) abutting against the inclined surface.

8. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 7, characterized in that, The adjusting device (4) also includes a locking plate (44), which covers the base (411) and the slider (413) respectively, and is connected as a whole by bolts. The locking plate (44) has a channel for avoiding the optical fiber flange (3), and a locking rod that passes through the notch and abuts against the adjusting block (421) on the side near the housing (1).

9. The fiber optic splitter supporting three-axis fine-tuning and free gating according to claim 8, characterized in that, The locking plate (44) is provided with an adjustment groove (45) for assembling the bolt. The adjustment groove (45) of the locking plate (44) corresponding to the base (411) is opened along the Y-axis direction.

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