Adjusting device of optical isolator and adjusting method thereof

Abstract

The invention discloses adjusting equipment of an optical isolator and an adjusting method thereof. The adjusting equipment comprises a first polaroid, an optical rotation crystal and a second polaroid which are arranged in sequence, a first magnet is arranged on the radial side face of the optical rotation crystal, and a first coil assembly is arranged outside the optical rotation crystal in the radial direction. When light passing through the first polaroid enters the optical rotation crystal, the first coil assembly drives the first magnet to drive the optical rotation crystal to rotate in a power-on state, so that the light is adjusted to be target light at the angle capable of passing through the second polaroid. According to the invention, the first magnet is arranged on the optical rotation crystal, and the rotation control of the optical rotation crystal is realized by electrifying the externally arranged first coil assembly, so that the rotation adjustment of the optical rotation crystal is facilitated, and the operation process of adjustment is simplified.

Description

Technical Field

[0001] The present application relates to the technical field of optical isolators, and in particular to an adjustment device and an adjustment method for an optical isolator. Background Art

[0002] An optical isolator is a commonly used passive optical device that allows light to pass in one direction only and blocks light in the opposite direction. An optical isolator typically consists of two polarizers and a rotating crystal sandwiched between them. The principle is that light entering the rotating crystal is filtered by the polarizer on one side, and then the rotating crystal changes its angle before it is finally guided out through the polarizer on the other side. Otherwise, light cannot be guided out, thus achieving unidirectional light transmission.

[0003] However, the various structures of the optical isolator are generally fixed by filling the internal cavity with organic glue during the production process. If a mechanically installed glue-free fixing structure is used, a groove is generally set at the installation position, and the rotating crystal and other structures are directly embedded in the groove. This makes it difficult to adjust the rotation angle of the rotating crystal in actual application. The adjustment process is cumbersome and inconvenient, and the operation process of debugging the angle also has high requirements for the operator. Summary of the Invention

[0004] The embodiments of the present application provide an adjustment device and an adjustment method for an optical isolator, which can facilitate the adjustment of the rotation of an optical rotation crystal, thereby simplifying the adjustment operation process of the optical isolator.

[0005] In a first aspect, an embodiment of the present application provides an adjustment device for an optical isolator, comprising:

[0006] A first polarizer, an optical rotatory crystal, and a second polarizer are arranged in sequence;

[0007] A first magnet is provided on the radial side of the optically active crystal, and a first coil assembly is provided radially outside the optically active crystal;

[0008] When the light passing through the first polarizer enters the optical rotator crystal, the first coil assembly drives the first magnet to rotate the optical rotator crystal in an energized state, so as to adjust the light to a target light having an angle capable of passing through the second polarizer.

[0009] In some embodiments, the adjustment device further includes a sensor, which is disposed on a side of the second polarizer away from the optically active crystal. The first coil assembly drives the first magnet to rotate the optically active crystal based on a detection result of the sensor.

[0010] In some embodiments, the adjustment device also includes a first mounting mechanism, which includes a first mounting member and a rotating connecting member; the rotating connecting member is rotatably arranged on one side of the first mounting member; a first through slot is provided on the first mounting member, and the first coil assembly is arranged in the through slot, and one end of the rotating connecting member extends into the first through slot and is connected to the first magnet.

[0011] In some embodiments, the adjustment device further includes a locking mechanism, which is disposed on the first mounting mechanism and is used to lock the rotation of the optically active crystal.

[0012] In some embodiments, a tooth-shaped groove is provided on the rotating connecting member, and the locking mechanism includes a second coil assembly, a second magnet, an elastic member and a metal block; the second coil assembly is arranged on the first mounting member, and the second magnet is slidably arranged in the second coil assembly, one end of the elastic member is connected to the second magnet, and the other end of the elastic member is connected to the metal block, and the metal block abuts against the tooth-shaped groove.

[0013] In some embodiments, the first coil assembly and the second coil assembly are respectively connected to different power circuits, or the first coil assembly and the second coil assembly are connected to the same power circuit.

[0014] In some embodiments, the adjusting device also includes an axial moving mechanism, which is arranged below the rotating connection; the axial moving mechanism includes a connecting plate mounting member, an axial slider, an axial linear rail, an axial motor and a first base plate; the connecting plate mounting member is provided with a connecting plate mounting groove, the rotating connection member is rotatably arranged in the connecting plate mounting groove, the bottom of the connecting plate mounting member is fixedly connected to the axial slider, the axial slider is slidably arranged on the axial linear rail, the axial slider is connected to the axial motor, and the axial motor and the axial linear rail are both arranged on the first base plate.

[0015] In some embodiments, the adjustment device also includes a horizontal moving mechanism, which is arranged below the axial moving mechanism; the horizontal moving mechanism includes a second base plate, a horizontal slider, a horizontal linear rail, a horizontal motor and a third base plate; the axial moving mechanism is provided on the second base plate, the bottom of the second base plate is fixedly connected to the horizontal slider, the horizontal slider is slidably arranged on the horizontal linear rail, the horizontal slider is connected to the horizontal motor, and the horizontal motor and the horizontal linear rail are both arranged on the third base plate.

[0016] In some embodiments, the adjustment device also includes a vertical moving mechanism, which is arranged on one side of the axial moving mechanism; the vertical moving mechanism includes a first vertical slider, a second vertical slider, a vertical guide rail and a vertical motor, the first vertical slider is fixedly connected to one side of the connecting plate mounting member, the second vertical slider is fixedly connected to one side of the third base plate, the first vertical slider and the second vertical slider are both fixedly arranged on the vertical guide rail, and the vertical guide rail is connected to the vertical motor.

[0017] In a second aspect, an embodiment of the present application provides a method for adjusting an optical isolator, comprising:

[0018] detecting an output result of an output end of the optical isolator when the optical rotation crystal rotates;

[0019] Determining whether the output end receives the target light according to the output result;

[0020] If so, the optically active crystal stops rotating;

[0021] If not, the optical rotation crystal continues to rotate until the output end receives the target light.

[0022] The beneficial effect of the present application is that the present application realizes the rotation control of the optically active crystal by arranging a first magnet on the optically active crystal and then energizing the first coil assembly of the peripheral device, thereby facilitating the rotation adjustment of the optically active crystal and simplifying the adjustment operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 is a structural diagram of a regulating device according to an embodiment of the present application;

[0025] Figure 2 is a structural schematic diagram of an adjustment device according to another embodiment of the present application;

[0026] Figure 3 is a structural schematic diagram of an adjustment device according to another embodiment of the present application;

[0027] Figure 4 is a schematic cross-sectional view of a portion of the structure of an adjustment device according to an embodiment of the present application;

[0028] Figure 5is a structural schematic diagram of an adjustment device according to yet another embodiment of the present application;

[0029] Figure 6 It is a schematic diagram of the locking mechanism structure of the present application;

[0030] Figure 7 It is a structural schematic diagram of the axial movement mechanism of the present application;

[0031] Figure 8 It is a structural diagram of the horizontal moving mechanism and the vertical moving mechanism of the present application;

[0032] Figure 9 is a schematic structural diagram of an adjustment device according to an embodiment of the present application;

[0033] Figure 10 This is a schematic diagram of the shell installation of an embodiment of the present application.

[0034] Explanation of reference numerals: 10 - first polarizer; 20 - optical rotation crystal; 30 - second polarizer; 40 - first magnet; 50 - first coil assembly; 60 - sensor; 70 - first mounting mechanism; 701 - first mounting member; 702 - rotating connecting member; 7011 - first through slot; 7021 - first rotating mounting slot; 7012 - second rotating mounting slot; 7022 - rotating mounting protrusion; 7013 - toothed slot; 80 - locking mechanism; 801 - second coil assembly; 802 - second magnet; 803 - elastic member; 804 - metal block; 90 - axial movement mechanism; 901 - connecting plate mounting member; 902 - axial slider; 903 -axial linear rail; 904-axial motor; 905-first base plate; 9011-connecting plate mounting slot; 100-horizontal moving mechanism; 1001-second base plate; 1002-horizontal slider; 1003-horizontal linear rail; 1004-horizontal motor; 1005-third base plate; 200-vertical moving mechanism; 2001-first vertical slider; 2002-second vertical slider; 2003-vertical guide rail; 2004-vertical motor; 3000-first shell; 3001-cover plate; 4000-second shell; 4001-second mounting piece; 5000-third shell; 5001-third mounting piece; 6000-mounting base. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] This embodiment provides the following Figure 1 The optical isolator adjustment device shown includes:

[0037] A first polarizer 10, an optical rotatory crystal 20, and a second polarizer 30 are arranged in sequence;

[0038] A first magnet 40 is provided on the radial side of the optically active crystal 20 , and a first coil assembly 50 is provided radially outside the optically active crystal 20 ;

[0039] When the light passing through the first polarizer 10 enters the optical rotatory crystal 20 , the first coil assembly 50 drives the first magnet 40 to rotate the optical rotatory crystal 20 in the energized state to adjust the light to the target angle that can pass through the second polarizer 30 .

[0040] In this embodiment, the first polarizer 10 is used to filter the angle of incident light entering the optical active crystal 20, that is, to filter the light entering the optical isolator. The optical active crystal 20 rotates the angle of incident light entering the optical active crystal 20, ensuring that the polarization angle of the light after being altered by the optical active crystal 20 is the same as that of the second polarizer 30, allowing it to pass smoothly through the second polarizer 30. The second polarizer 30 ensures that the light passing through the optical isolator is the target light, achieving unidirectional light transmission. Furthermore, the first magnet 40 and the first coil assembly 50 utilize the law of electromagnetic induction. When energized, the first coil assembly 50 drives the first magnet 40 to rotate, which in turn drives the optical active crystal 20 to rotate. During rotation, the desired rotation angle can be adaptively adjusted based on actual needs. This arrangement only requires powering on the first coil assembly 50 to rotate the internal optically active crystal 20, without requiring additional disassembly of the internal structure to adjust the rotation of the optically active crystal 20. In actual installation, the optically active crystal 20, the first magnet 40, and the first coil assembly 50 can be assembled in a sealed junction. During final packaging, this sealed structure can be encapsulated with organic glue or secured mechanically.

[0041] In one example, the deflection angle of the first polarizer 10 is set to 90°, the rotation angle of the optically active crystal 20 is set to 45°, and the deflection angle of the second polarizer 30 is set to 45°. In actual use, light entering the first polarizer 10 is polarized at 90°. After entering the optically active crystal 20, it is rotated to 45° and smoothly exits the second polarizer 30. Conversely, light passing through the second polarizer 30 is deflected at 45° by the second polarizer 30 and, because it has the same deflection angle as the optically active crystal 20, it directly exits the optically active crystal 20. Upon reaching the first polarizer 10, due to the 90° deflection angle of the first polarizer 10, this light cannot pass through the optical isolator, thereby achieving unidirectional transmission.

[0042] In one embodiment of the present application, as shown in the attached Figure 2 As shown, the adjustment device further includes a sensor 60 , which is disposed on a side of the second polarizer 30 away from the optically active crystal 20 . The first coil assembly 50 drives the first magnet 40 to rotate the optically active crystal 20 based on the detection result of the sensor 60 .

[0043] The provision of a sensor 60 further automates the adjustment process. The sensor 60 is used to detect whether light passes through the output end of the optical isolator. In practical applications, the sensor 60 detects whether light passes through the side of the second polarizer 30 away from the optically active crystal 20, i.e., whether light passes through the output end of the optical isolator, to determine whether the optically active crystal 20 has been rotated to the desired angle. If light is detected, the optical isolator can function normally. If no light is detected, the optical isolator requires further rotational adjustment of the optically active crystal 20. In this case, the first coil assembly 50 is activated to drive the optically active crystal 20 to the desired angle. During the rotation process, if the sensor 60 detects light, the first coil assembly 50 stops, halting the rotation of the optically active crystal 20 and completing the adjustment process. This simple structure allows control of the first coil assembly 50 through circuit connections. For example, when power is applied to the first coil assembly 50, the first coil assembly 50 starts to drive the first magnet 40. When power is removed from the second coil assembly, the first coil assembly 50 stops, halting the rotation of the optically active crystal 20.

[0044] Furthermore, the sensor 60 can detect the intensity of the light while simultaneously detecting whether light is passing through. The alignment accuracy of the optically active crystal 20 can be further determined based on the light intensity, thereby further refining the calibration of the optically active crystal 20. The above structure and method can be applied to debugging optical isolators during production, as well as to readjustment of optical isolators during use.

[0045] In the above structure, it should be noted that the first magnet 40 may be an electromagnet and may be embedded in the optically active crystal 20 .

[0046] In one embodiment of the present application, the mounting structure of the first coil assembly 50, the first magnet 40 and the optically active crystal 20 is further optimized, as shown in the attached figure. Figure 3 As shown, the adjustment device also includes a first mounting mechanism 70, which includes a first mounting member 701 and a rotating connecting member 702; the rotating connecting member 702 is rotatably arranged on one side of the first mounting member 701; a first through slot 7011 is provided on the first mounting member 701, and the first coil assembly 50 is arranged in the through slot, and one end of the rotating connecting member 702 extends into the first through slot 7011 and is connected to the first magnet 40.

[0047] The first mounting member 701 is used to mount the first coil assembly 50 and is rotatably connected to the rotating connector 702. The rotating connector 702 is used to mount the first magnet 40. Specifically, the first magnet 40 can be connected to the rotating connector 702 by embedding or other means. The first through-groove 7011 is used to accommodate the optically active crystal 20 and the first magnet 40. The configuration of the first through-groove 7011 ensures that light can smoothly pass through the first through-groove 7011 and enter the optically active crystal 20. Furthermore, the radius of the first through-groove 7011 is set to be greater than the distance from the center of the optically active crystal 20 to the surface of the first magnet 40. This configuration ensures that the optically active crystal 20 and the first magnet 40 can rotate normally within the first through-groove 7011.

[0048] The structure of the rotating connecting member 702 to realize the rotatable connection with the first mounting member 701 is as follows Figure 3 and attached Figure 4 As shown, a first rotational mounting groove 7021 is provided on a side corresponding to the first mounting member 701, and the first mounting member 701 and the first coil assembly 50 are arranged in the first rotational mounting groove 7021. The first rotational mounting groove 7021 is an annular groove, so that the rotating connector 702 can achieve relative rotation with the first mounting member 701 through the first rotational mounting groove 7021. In order to facilitate relative rotation, a lubricating material can be applied to the groove, or a ball bearing can be provided to reduce the obstruction of relative rotation. Furthermore, in order to ensure the stability of the installation of the first mounting member 701 and the rotating connector 702, an annular second rotational mounting groove 7012 is provided on the side of the first mounting member 701 corresponding to the first rotational mounting groove 7021, and an annular rotational mounting protrusion 7022 is provided at the position of the first rotational mounting groove 7021 corresponding to the second rotational mounting groove 7012. The second rotating mounting groove 7012 and the rotating mounting protrusion 7022 further improve the installation stability of the two, and can limit the rotating connection member 702, so that the first rotating mounting groove 7021 of the rotating connection member 702 is close to the side wall of the first magnet 40 and there is a certain distance between the first coil assembly 50, thereby ensuring that there is a distance between the first magnet 40 and the first coil assembly 50, reducing the obstruction of the rotation of the first magnet 40.

[0049] During operation, the first coil drives the first magnet 40 to rotate the optically active crystal 20 , and simultaneously drives the rotating connector 702 to rotate relative to the first mounting member 701 .

[0050] In one embodiment, as shown in the attached Figure 5As shown, the adjustment device further includes a locking mechanism 80, which is disposed on the first mounting mechanism 70 and is used to lock the rotation of the optically active crystal 20. Specifically, the locking mechanism 80 can lock the rotation of the rotating connector 702, thereby locking the rotation of the optically active crystal 20. This is illustrated below using an example.

[0051] In one example, as shown in the attached Figure 6 As shown, a tooth-shaped groove 7013 is provided on the rotating connecting member 702, and the locking mechanism 80 includes a second coil assembly 801, a second magnet 802, an elastic member 803 and a metal block 804; the second coil assembly 801 is arranged on the first mounting member 701, and the second magnet 802 is slidably arranged in the second coil assembly 801, one end of the elastic member 803 is connected to the second magnet 802, and the other end of the elastic member 803 is connected to the metal block 804, and the metal block 804 abuts against the tooth-shaped groove 7013.

[0052] Specifically, the toothed groove 7013 is an annular toothed groove 7013, which is used to cooperate with the metal block 804 to lock the rotating connector 702. The second coil assembly 801 is used to cooperate with the second magnet 802, and then by controlling the second coil assembly 801, the second magnet 802 is driven to slide in the second coil assembly 801, thereby pushing the metal block 804 to engage or disengage with the toothed groove 7013. The second magnet 802 is magnetized by the second coil assembly 801 when the second coil assembly 801 is activated, and has no magnetic force when the second coil 801 is not activated. The elastic member 803 is used to provide elastic force to the metal block 804 to force the metal block 804 to abut against the toothed groove 7013. The shape of the metal block 804 is a toothed metal block 804 that fits the toothed groove 7013, and is used to cooperate with the sliding of the second magnet 802 and the structure of the toothed groove 7013. Specifically, when the second magnet 802 has no magnetic force, it is extended into the toothed groove 7013 by the elastic force of the elastic member 803, and abuts and engages with the toothed groove 7013, thereby locking the rotation of the rotating connection member 702; when the second magnet 802 is magnetized and has magnetic force, it is attracted by the second magnet 802 and moves in the direction of the second magnet 802. During this process, the elastic member 803 shrinks and deforms due to the pressure of the metal block 804, and the metal block 804 stops until it moves to the maximum limit of the elastic member 803, thereby causing the metal block 804 to break away from the abutment and engagement state with the toothed groove 7013, and finally leave the inside of the toothed groove 7013. At this time, the rotating connection member is not affected by the locking.

[0053] In another example, the first coil assembly 50 and the second coil assembly 801 are connected to different power circuits, or the first coil assembly 50 and the second coil assembly 801 are connected to the same power circuit. It is understood that when the first coil assembly 50 and the second coil assembly 801 are connected to different power circuits, the first coil assembly 50 and the second coil assembly 801 can be controlled separately. Therefore, when the first coil assembly 50 is controlled to start and ultimately drive the rotating connector 702 to rotate, the second coil assembly 801 can be controlled to start at the same time, causing the metal block 804 to leave the tooth-shaped groove 7013 without affecting the rotation of the rotating connector 702. When the first coil assembly 50 is controlled to stop, the first coil assembly 50 can be controlled to stop first, and then the second coil assembly 801 can be controlled to stop, causing the metal block 804 to engage with the tooth-shaped groove 7013. Alternatively, the first coil assembly 50 and the second coil assembly 801 are connected to the same power circuit. In this connection, the first coil assembly 50 and the second coil assembly 801 are controlled by the same control switch, allowing them to start and stop simultaneously. Therefore, when started (powered on), the first coil assembly 50 drives the first magnet 40 to rotate the optically active crystal 20, while the second coil assembly 801 magnetizes the second magnet 802 to drive the metal block 804 out of the toothed slot 7013, allowing the rotating connector 702 to rotate normally along with the first magnet 40. When stopped (powered off), the optically active crystal 20 and the rotating connector 702 stop rotating, while the metal block 804 engages with the teeth in the toothed slot 7013, achieving a locking function. This configuration is simpler than the previous one.

[0054] In one embodiment of the present application, as shown in the attached Figure 7 As shown, the adjustment device also includes an axial moving mechanism 90, which is arranged below the rotating connection 702; the axial moving mechanism 90 includes a connecting plate mounting member 901, an axial slider 902, an axial linear rail 903, an axial motor 904 and a first base plate 905; a connecting plate mounting member 901 is provided with a connecting plate mounting groove 9011, and the rotating connection 702 is rotatably arranged in the connecting plate mounting groove 9011, and the bottom of the connecting plate mounting member 901 is fixedly connected to the axial slider 902, and the axial slider 902 is slidably arranged on the axial linear rail 903, and the axial slider 902 is connected to the axial motor 904, and the axial motor 904 and the axial linear rail 903 are both arranged on the first base plate 905.

[0055] Among them, the connecting plate mounting part 901 is used to install the rotating connector 702 so that it can rotate freely in the connecting plate mounting groove 9011 of the connecting plate mounting part 901. The connecting plate mounting groove 9011 is a semi-arc groove corresponding to the shape of the rotating connector 702. The connecting plate mounting part 901 provides support for the overall structure connected by the rotating connector 702. The axial slider 902 is used to help the connecting plate mounting part 901 slide on the axial linear rail 903. Specifically, the slider is controlled by the axial motor 904 to slide on the axial linear rail 903 (its sliding direction is as shown in FIG. Figure 7 axial position of the optically active crystal 20. In one example, the axial motor 904 is a drive motor, with a retractable shaft at one end connected to the axial slider 902. In this application, one or more axial movement mechanisms 90 may be provided.

[0056] In one embodiment of the present application, as shown in the attached Figure 8 As shown, the adjustment device also includes a horizontal moving mechanism 100, which is arranged below the axial moving mechanism 90; the horizontal moving mechanism 100 includes a second base plate 1001, a horizontal slider 1002, a horizontal linear rail 1003, a horizontal motor 1004 and a third base plate 1005; the axial moving mechanism 90 is provided on the second base plate 1001, the bottom of the second base plate 1001 is fixedly connected to the horizontal slider 1002, the horizontal slider 1002 is slidably arranged on the horizontal linear rail 1003, the horizontal slider 1002 is connected to the horizontal motor 1004, and the horizontal motor 1004 and the horizontal linear rail 1003 are both arranged on the third base plate 1005.

[0057] The second base plate 1001 is used to install the entire axial moving mechanism 90, which is convenient for adapting to the installation of different numbers of axial moving mechanisms 90. The horizontal slider 1002 is used to help the second base plate 1001 slide on the horizontal linear rail 1003. Specifically, the slider is controlled by the horizontal motor 1004 to slide on the horizontal linear rail 1003 (its sliding direction is as shown in FIG. Figure 8 ), thereby driving the optically active crystal 20 to move horizontally, thereby adjusting the horizontal position of the optically active crystal 20. In one example, the horizontal motor 1004 is a drive motor, and a retractable shaft at one end thereof is connected to the horizontal slider 1002.

[0058] In one embodiment of the present application, the adjustment device also includes a vertical moving mechanism 200, which is arranged on one side of the axial moving mechanism 90; the vertical moving mechanism 200 includes a first vertical slider 2001, a second vertical slider 2002, a vertical guide rail 2003 and a vertical motor 2004, the first vertical slider 2001 is fixedly connected to one side of the connecting plate mounting member 901, the second vertical slider 2002 is fixedly connected to one side of the third base plate 1005, the first vertical slider 2001 and the second vertical slider 2002 are both fixedly arranged on the vertical guide rail 2003, and the vertical guide rail 2003 is connected to the vertical motor 2004.

[0059] The first vertical slider 2001 and the second vertical slider 2002 are fixedly mounted on the vertical guide rail 2003 to drive the axial movement mechanism 90 and the horizontal movement mechanism 100 to move synchronously with the movement of the vertical guide rail 2003. When the vertical motor 2004 is activated, the vertical motor 2004 drives the vertical guide rail 2003 to perform a circular motion in the vertical direction, thereby driving the optically active crystal 20 to move in the vertical direction. For example, a conveyor belt is provided on the guide rail plate, and the first vertical slider 2001 and the second vertical slider 2002 are fixed on the conveyor belt. The motor drives the conveyor belt to move the first vertical slider 2001 and the second vertical slider 2002 in the vertical direction (the sliding direction is as shown in FIG. 2 ). Figure 8 This type of structure can adopt existing technology and will not be described in detail here.

[0060] In one embodiment, as shown in the attached Figure 8 As shown, the optically active crystal 20, first magnet 40, first mounting mechanism 70, locking mechanism 80, axial movement mechanism 90, horizontal movement mechanism 100, and vertical movement mechanism 200 are all disposed within a first housing 3000. This facilitates sealing the optically active crystal 20 and reduces the impact on the accuracy of the optically active crystal 20 during packaging. The first housing 3000 can be made of a transparent material. Furthermore, a vertical guide rail 2003 and a vertical motor 2004 are disposed on the sidewalls of the first housing 3000.

[0061] In one embodiment, as shown in the attached Figure 8As shown, the top of the first housing 3000 is an openable and closable cover 3001. During production and use, the cover 3001 can be opened as needed to remove the rotating connector 702, the first mounting member 701, and the locking mechanism 80. Then, because the first mounting member 701 and the rotating connector 702 are detachable, they can be directly disassembled. In this case, the rotating connector 702 drives the first magnet 40 and the optically active crystal 20 to separate, while the locking mechanism 80 remains on the first mounting member 701. This facilitates replacement of the optically active crystal 20 as needed (for example, by providing a detachable snap-fit ​​connection or embedded structure between the first magnet 40 and the rotating connector 702). When a different optically active crystal 20 is needed, the optically active crystal 20 and the first magnet 40 can be directly removed from the rotating connector 702.

[0062] In one embodiment, as shown in the attached Figure 8 , Attachment Figure 9 and attached Figure 10 As shown, the first polarizer 10 is disposed on the second mounting member 4001. In one example, the first polarizer 10 and the second mounting member 4001 are both disposed within the second housing 4000. Similarly, the second polarizer 30 is disposed on the third mounting member 5001. In one example, the second polarizer 30 and the second mounting member 4001 are both disposed within the third housing 5000. It should be noted that this application does not limit the shapes of the first polarizer 10 and the second polarizer 30, nor does it limit the shapes of the second mounting member 4001 and the third mounting member 5001. In addition, the second housing 4000 and the third housing 5000 can be made of transparent materials.

[0063] In one example, according to the above structure, a mounting base 6000 is provided, and grooves corresponding to the first shell 3000, the second shell 4000 and the third shell 5000 are provided on the mounting base 6000. During assembly, it is only necessary to directly install the corresponding shells in the corresponding grooves, and when replacing, it is only necessary to directly pull them out.

[0064] Another embodiment of the present application provides a method for adjusting an optical isolator, comprising:

[0065] Detecting the output result of the output terminal of the optical isolator when the optical rotation crystal 20 rotates;

[0066] Determine whether the output end receives the target light according to the output result;

[0067] If so, the optically active crystal 20 stops rotating;

[0068] If not, the optical rotation crystal 20 continues to rotate until the output end receives the target light.

[0069] According to the above adjustment method, the rotation adjustment of the optical rotation crystal 20 can be achieved by detecting the output result of the output terminal, thereby ensuring the qualified rate of the optical isolator.

[0070] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An adjustment device for an optical isolator, characterized in that: include: A first polarizer, an optical rotation crystal and a second polarizer are arranged in sequence; A first magnet is disposed on the radial side of the optically active crystal, and a first coil assembly is disposed radially outside the optically active crystal; When the light passing through the first polarizer enters the optical rotatory crystal, the first coil assembly drives the first magnet to drive the optical rotatory crystal to rotate in a powered state, so as to adjust the light to a target light having an angle capable of passing through the second polarizer.

2. The optical isolator adjustment device according to claim 1, characterized in that: The adjustment device further includes a sensor, which is disposed on a side of the second polarizer away from the optically active crystal. The first coil assembly drives the first magnet to rotate the optically active crystal according to a detection result of the sensor.

3. The optical isolator adjustment device according to claim 1, characterized in that: The adjusting device also includes a first mounting mechanism, which includes a first mounting member and a rotating connecting member; the rotating connecting member is rotatably arranged on one side of the first mounting member; a first through slot is provided on the first mounting member, the first coil assembly is arranged in the through slot, and one end of the rotating connecting member extends into the first through slot and is connected to the first magnet.

4. The optical isolator adjustment device according to claim 3, characterized in that: The adjustment device further comprises a locking mechanism, which is arranged on the first mounting mechanism and is used to lock the rotation of the optically active crystal.

5. The optical isolator adjustment device according to claim 4, characterized in that: The rotating connecting member is provided with a toothed groove, and the locking mechanism includes a second coil assembly, a second magnet, an elastic member and a metal block; the second coil assembly is arranged on the first mounting member, the second magnet is slidably arranged in the second coil assembly, one end of the elastic member is connected to the second magnet, and the other end of the elastic member is connected to the metal block, and the metal block abuts against the toothed groove.

6. The optical isolator adjustment device according to claim 5, characterized in that: The first coil component and the second coil component are respectively connected to different power supply circuits, or the first coil component and the second coil component are connected to the same power supply circuit.

7. The optical isolator adjustment device according to claim 3, characterized in that: The adjusting device also includes an axial moving mechanism, which is arranged below the rotating connection; the axial moving mechanism includes a connecting plate mounting, an axial slider, an axial linear rail, an axial motor and a first base plate; the connecting plate mounting is provided with a connecting plate mounting groove, the rotating connection can be rotatably arranged in the connecting plate mounting groove, the bottom of the connecting plate mounting is fixedly connected to the axial slider, the axial slider can be slidably arranged on the axial linear rail, the axial slider is connected to the axial motor, and the axial motor and the axial linear rail are both arranged on the first base plate.

8. The optical isolator adjustment device according to claim 7, characterized in that: The adjusting device also includes a horizontal moving mechanism, which is arranged below the axial moving mechanism; the horizontal moving mechanism includes a second base plate, a horizontal slider, a horizontal linear rail, a horizontal motor and a third base plate; the axial moving mechanism is provided on the second base plate, the bottom of the second base plate is fixedly connected to the horizontal slider, the horizontal slider is slidably arranged on the horizontal linear rail, the horizontal slider is connected to the horizontal motor, and the horizontal motor and the horizontal linear rail are both arranged on the third base plate.

9. The optical isolator adjustment device according to claim 8, characterized in that: The adjustment device also includes a vertical moving mechanism, which is arranged on one side of the axial moving mechanism; the vertical moving mechanism includes a first vertical slider, a second vertical slider, a vertical guide rail and a vertical motor, the first vertical slider is fixedly connected to one side of the connecting plate mounting member, the second vertical slider is fixedly connected to one side of the third base plate, the first vertical slider and the second vertical slider are both fixedly arranged on the vertical guide rail, and the vertical guide rail is connected to the vertical motor.

10. A method for adjusting an optical isolator, characterized in that: include: Detecting an output result of an output end of the optical isolator when the optical rotation crystal rotates; Determine whether the output end receives the target light according to the output result; If yes, the optically active crystal stops rotating; If not, the optical rotation crystal continues to rotate until the output end receives the target light.

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