Assembled optical fiber isolator and assembly method thereof

Abstract

The invention discloses an assembled optical fiber isolator and an assembly method thereof, belonging to the technical field of optical network equipment. The assembled optical fiber isolator and an assembly method thereof include a glass half-tube, an optical rotation isolation core arranged in the middle of the glass half-tube, and optical fiber collimators respectively arranged at both ends of the optical rotation isolation core. The top of the glass half-tube is provided with a second glass half-tube, and the glass half-tube and the second glass half-tube are combined to form an inner tube, the outer tube is threadedly connected to the outer tube, the middle position of the glass half-tube is clamped with a central bracket, both ends of the inner tube are threadedly connected to optical fiber docking ends, and an optical fiber conductor is fixedly arranged at one end of the optical fiber docking end away from the inner tube. It can realize the replacement or maintenance of the damaged component, avoid the situation that the entire optical fiber isolator is discarded due to damage to a single component, and thus effectively reduce the use cost of the optical fiber isolator.

Description

Technical Field

[0001] The present invention relates to the technical field of optical network equipment, and more specifically, to an assembled optical fiber isolator and an assembling method thereof. Background Art

[0002] Fiber isolator is a fiber device used to maintain the spectral purity of the light source. The working principle of fiber isolator is based on nonlinear optical effect and polarization control. It uses optical polarization elements to keep the polarization direction of the input optical signal different from the polarization direction of the output optical signal, thereby achieving the isolation of the optical signal. When the input optical signal enters the fiber isolator through the fiber coupler, the optical polarization element changes the polarization state of the optical signal. Then, the optical signal is filtered and adjusted by the optical filter and finally emitted from the output end. At the same time, any reflection or echo signal generated by the output end cannot be transmitted back to the input end, thereby achieving unidirectional transmission and isolation of the optical signal.

[0003] At present, common optical isolators are all integrated structures. After the optical fiber isolator is packaged, it cannot be disassembled. If any component in the optical fiber isolator is damaged, the entire optical fiber isolator can only be replaced, which greatly increases the use cost of the optical fiber isolator.

[0004] Therefore, in view of this, the existing structure is studied and improved, and a prefabricated optical fiber isolator and an assembly method thereof are provided, in order to achieve a more practical purpose. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide an assembled optical fiber isolator and an assembly method thereof, which can realize the replacement or repair of the damaged parts, avoid the situation where a single part is damaged and the entire optical fiber isolator is discarded, and thus effectively reduce the use cost of the optical fiber isolator.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] An assembled optical fiber isolator comprises a first-class glass half-tube, an optically active isolation core arranged in the middle of the first-class glass half-tube, and optical fiber collimators arranged at both ends of the optically active isolation core, a second-class glass half-tube is arranged at the top of the first-class glass half-tube, and the first-class glass half-tube and the second-class glass half-tube are combined to form an inner tube, and an outer tube is threadedly connected to the outer side of the inner tube;

[0010] A central bracket is clamped in the middle position of the inner part of the glass half sleeve, and the central bracket includes a partition end and a central connecting piece. The number of the partition ends is two, and they are respectively fixed at the two ends of the central connecting piece. Side brackets are installed on both sides of the inner part of the glass half sleeve, and the side brackets include two circular rails and three arc-shaped slides. The two ends of the arc-shaped slide are respectively slidably connected with the circular rails at corresponding positions;

[0011] Both ends of the inner sleeve are threadedly connected with optical fiber butt ends, and an optical fiber conductor is fixedly arranged at one end of the optical fiber butt end away from the inner sleeve.

[0012] Furthermore, the separation end head comprises an inner ring piece and an outer ring piece, and a plurality of oblique connecting rods are fixedly connected between the inner ring piece and the outer ring piece;

[0013] The central circular holes of the inner ring sheet and the outer ring sheet have the same apertures, and the outer diameter of the inner ring sheet is greater than the outer diameter of the outer ring sheet.

[0014] Furthermore, the central connecting member comprises two parallel long transverse straight rods, the two ends of the long transverse straight rods are respectively fixed to the corresponding inner ring pieces, and arc-shaped ribs are fixedly arranged at the three equal points of the long transverse straight rods;

[0015] The inner diameter of the arc-shaped rib is equal to the inner diameter of the optically rotating isolation core.

[0016] Furthermore, four groups of arc-shaped double limit strips are fixedly arranged in the middle part of the glass half-sleeve, and the two groups of arc-shaped double limit strips located in the middle position are respectively clamped with the arc-shaped ribs at the corresponding positions, and the two groups of arc-shaped double limit strips located at the edge positions are respectively clamped with the inner ring pieces at the corresponding positions.

[0017] Furthermore, the arc-shaped slide comprises two arc-shaped sliders and two transverse short straight rods, the two arc-shaped sliders slide on the corresponding circular rails respectively, and the two ends of the transverse short straight rods are respectively fixed to the corresponding arc-shaped sliders;

[0018] The inner arc surface of the arc slider is in close contact with the optical fiber collimator.

[0019] Furthermore, the optical fiber docking end includes a docking plug, and a docking socket is fixedly provided at one end of the optical fiber collimator, and the docking plug forms a snap connection with the docking socket after movement.

[0020] Furthermore, arc-shaped baffles are fixedly provided at both ends of the interior of the glass half-tube, a limiting slide is fixedly provided at the bottom end of the docking plug, a limiting slide groove is provided on the arc-shaped baffle, and the limiting slide is slidably connected with the limiting slide groove when moving.

[0021] Furthermore, a side of the docking plug is movably connected to a knob disk with a thread through a bearing;

[0022] Internal threads are fixedly arranged at both ends of the inner sleeve, and the threaded knob is threadedly connected to the inner sleeve via the internal threads;

[0023] A protrusion is fixedly arranged on the side of the threaded knob disk away from the docking socket.

[0024] Furthermore, a clamping strip is fixedly provided on the edge of the first type glass half-tube, and a clamping groove is fixedly opened on the edge of the second type glass half-tube, and the clamping strip is correspondingly clamped with the clamping groove.

[0025] 3. Beneficial effects

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] In this solution, when the assembled optical fiber isolator is used, the basic components in the optical fiber isolator are supported and fixed by the central bracket and the side bracket, and then the first packaging is completed by the first glass half-tube and the second glass half-tube, and the second packaging is completed by the outer tube. The connection between the optical fiber isolator and the optical fiber line is completed by the optical fiber docking end, and after the assembly of the entire optical fiber isolator is completed, the optical fiber isolator can still be effectively separated. In this way, no matter which component in the optical fiber isolator is damaged, the damaged component can be replaced or repaired by separating the optical fiber isolator. In this way, the situation where a single component is damaged and the entire optical fiber isolator is discarded can be avoided, thereby effectively reducing the use cost of the optical fiber isolator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the optical fiber isolator in the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the optical fiber isolator in the present invention after the outer sleeve is removed;

[0030] Figure 3 A schematic diagram of the three-dimensional structure inside a glass half-tube in the present invention;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of a glass half-tube in the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the optical rotation isolation core and the optical fiber collimator in the present invention;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the second type of glass half-tube in the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the central connecting member in the present invention;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the edge bracket in the present invention;

[0036] Fig. 9 The three-dimensional structure of the optical fiber butt joint end in the present invention is shown in FIG. Figure 1 ;

[0037] Fig.10 The three-dimensional structure of the optical fiber butt joint end in the present invention is shown in FIG. Figure 2 .

[0038] Description of the numbers in the figure:

[0039] 1. Class I glass half-tube; 101. Optical isolation core;

[0040] 102. Optical fiber collimator; 1021. Docking socket;

[0041] 103. Arc-shaped double limit strips;

[0042] 104, arc baffle; 1041, limit slide; 105, card strip;

[0043] 2. Type II glass half sleeve; 201. Card slot;

[0044] 3. Inner casing; 301, internal thread;

[0045] 4. Outer sleeve;

[0046] 5. Center bracket;

[0047] 501, separation end; 5011, inner ring piece; 5012, outer ring piece; 5013, oblique connecting rod; 502, center connecting piece; 5021, horizontal long straight rod; 5022, arc rib;

[0048] 6. Edge bracket;

[0049] 601, circular track;

[0050] 602, arc-shaped slide; 6021, arc-shaped slider; 6022, horizontal short straight rod;

[0051] 7. Optical fiber docking terminal;

[0052] 701, docking plug; 7011, limiting slide;

[0053] 702, a knob disk with a thread; 703, a bump;

[0054] 8. Fiber optic conductors. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0056] Embodiment 1:

[0057] See also Figure 1-10 , an assembled optical fiber isolator, comprising a type of glass half-tube 1, the type of glass half-tube 1 is used to install basic components required for the optical fiber isolator;

[0058] An optical rotation isolation core 101 is arranged in the middle of a glass half-tube 1, and optical fiber collimators 102 are respectively arranged at both ends of the optical rotation isolation core 101. The optical rotation isolation core 101 and the optical fiber collimator 102 are basic components of the optical fiber isolator, which realizes the unidirectional transmission and isolation of optical signals;

[0059] A second-type glass half-tube 2 is arranged on the top of the first-type glass half-tube 1. The second-type glass half-tube 2 covers the first-type glass half-tube 1, and both are half-circular tube structures.

[0060] The first type glass half-tube 1 and the second type glass half-tube 2 are combined to form an inner tube 3, and the inner tube 3 is a relatively sealed circular tube structure, which realizes the basic sealing of the basic components inside the inner tube 3;

[0061] The outer side of the inner sleeve 3 is threadedly connected with an outer sleeve 4, and the outer sleeve 4 is used to protect the inner sleeve 3 and prevent the inner sleeve 3 from being dispersed into a type I glass half sleeve 1 and a type II glass half sleeve 2;

[0062] A central bracket 5 is clamped in the middle of the inner part of the first type of glass half-tube 1, and the central bracket 5 is responsible for providing a mounting point for the optically rotating isolation core 101;

[0063] The central support 5 includes a separation end 501 and a central connecting piece 502. There are two separation ends 501, which are fixed at both ends of the central connecting piece 502. The separation end 501 can block the optical fiber collimator 102 next to it to prevent the optical fiber collimator 102 from directly contacting the optically active isolation core 101, while the central connecting piece 502 provides direct support for the optically active isolation core 101.

[0064] Side brackets 6 are installed on both sides of the interior of the first type of glass half-tube 1, and the side brackets 6 are responsible for providing support for the optical fiber collimator 102;

[0065] The edge bracket 6 includes two circular rails 601 and three arc-shaped slides 602. The two ends of the arc-shaped slides 602 are respectively slidably connected to the circular rails 601 at corresponding positions. When the three arc-shaped slides 602 slide together, they occupy a total of 1 / 3 of the length of the circular rails 601. When the three arc-shaped slides 602 are separated, the optical fiber collimator 102 placed inside the arc-shaped slides 602 can be effectively supported.

[0066] The structure of the central support 5 and the side support 6 are different because the optical rotation isolation core 101 needs to be fixed at the center position, and the optical fiber collimator 102 is set at both ends of the optical rotation isolation core 101. During actual assembly, the optical fiber collimator 102 needs to be adjusted in position;

[0067] Both ends of the inner sleeve 3 are threadedly connected with optical fiber docking ends 7, and an optical fiber conductor 8 is fixedly provided at one end of the optical fiber docking end 7 away from the inner sleeve 3, and the optical fiber docking end 7 is used to realize the connection between the optical fiber conductor 8 and the internal optical fiber collimator 102.

[0068] See also Figure 4 , Figure 5 and Figure 7 Specifically, the separation end 501 includes an inner ring piece 5011 and an outer ring piece 5012, and a plurality of oblique connecting rods 5013 are fixedly connected between the inner ring piece 5011 and the outer ring piece 5012;

[0069] The apertures of the central circular holes of the inner ring piece 5011 and the outer ring piece 5012 are equal, and the outer diameter of the inner ring piece 5011 is greater than the outer diameter of the outer ring piece 5012.

[0070] The inner ring piece 5011 can contact the optical rotation isolation core 101, while the outer ring piece 5012 contacts the optical fiber collimator 102, and the specifications of the inner ring piece 5011 and the outer ring piece 5012 are controlled to avoid direct contact between the optical rotation isolation core 101 and the optical fiber collimator 102.

[0071] Specifically, the central connecting member 502 includes two parallel long horizontal straight rods 5021, both ends of which are fixed to the corresponding inner ring pieces 5011, and arc-shaped ribs 5022 are fixedly arranged at the three equal points of the horizontal long straight rod 5021;

[0072] The inner diameter of the arc-shaped rib 5022 is equal to the inner diameter of the optically rotating isolation core 101 .

[0073] In this way, the optically active isolation core 101 can be stably installed inside the central connecting member 502 , and the arc-shaped ribs 5022 can provide stable support for the optically active isolation core 101 .

[0074] Specifically, four groups of arc-shaped double-limiting strips 103 are fixedly arranged in the middle of the first-class glass half-tube 1. The two groups of arc-shaped double-limiting strips 103 located in the middle position are respectively connected with the arc-shaped ribs 5022 at the corresponding positions, and the two groups of arc-shaped double-limiting strips 103 located at the edge positions are respectively connected with the inner ring pieces 5011 at the corresponding positions. By using the locking position of the arc-shaped double-limiting strips 103, the optical rotation isolation core 101 and the central connecting member 502 can be stably fixed in the middle of the first-class glass half-tube 1.

[0075] See also Figure 4 , Figure 5 and Figure 8 Specifically, the arc-shaped slide 602 includes two arc-shaped sliders 6021 and two transverse short straight rods 6022. The two arc-shaped sliders 6021 slide on the corresponding circular rails 601 respectively, and the two ends of the transverse short straight rods 6022 are respectively fixed to the corresponding arc-shaped sliders 6021; there is a certain friction force between the arc-shaped slider 6021 and the circular rail 601. When no external force is applied, the arc-shaped slider 6021 will be fixed at a specific position on the circular rail 601.

[0076] The inner arc surface of the arc slider 6021 is in close contact with the optical fiber collimator 102 . The six arc sliders 6021 can provide stable support for the optical fiber collimator 102 .

[0077] See also Figure 3 , Figure 4 , Figure 5 , Fig. 9 and Fig.10 Specifically, the optical fiber docking end 7 includes a docking plug 701, and a docking socket 1021 is fixedly provided at one end of the optical fiber collimator 102. After being moved, the docking plug 701 forms a snap connection with the docking socket 1021. In this way, the connection between the optical fiber conductor 8 and the optical fiber collimator 102 can be achieved.

[0078] Specifically, arc-shaped baffles 104 are fixedly provided at both ends of the inner part of the first type of glass half sleeve 1, and a limit slide 7011 is fixedly provided at the bottom end of the docking plug 701. A limit slide groove 1041 is provided on the arc-shaped baffle 104, and the limit slide 7011 is slidably connected with the limit slide groove 1041 when moving. The limit slide groove 1041 is used to limit the advancing direction of the limit slide 7011 and the docking plug 701, so as to facilitate the docking plug 701 to be accurately docked with the docking socket 1021 after moving.

[0079] Specifically, a side of the docking plug 701 is movably connected to a knob disk 702 with threads via a bearing;

[0080] Internal threads 301 are fixedly provided at both ends of the inner sleeve 3, and the threaded knob 702 is threadedly connected to the inner sleeve 3 through the internal threads 301;

[0081] A protrusion 703 is fixedly provided on the side of the threaded knob disk 702 away from the docking socket 1021. The threaded knob disk 702 is rotated by the protrusion 703. The setting of the protrusion 703 can improve the operation convenience of the threaded knob disk 702. When the threaded knob disk 702 is screwed in, the limiting slide 7011 is pushed to continue to move until the docking plug 701 and the docking socket 1021 are locked, so as to facilitate the stable docking between the docking plug 701 and the docking socket 1021 after the movement.

[0082] See also Figure 4 and Figure 6 Specifically, a clamping strip 105 is fixedly provided on the edge of the first-class glass half-tube 1, and a clamping groove 201 is fixedly provided on the edge of the second-class glass half-tube 2, and the clamping strip 105 is clamped correspondingly with the clamping groove 201. By means of the clamping connection between the clamping strip 105 and the clamping groove 201, when the first-class glass half-tube 1 and the second-class glass half-tube 2 are used in combination, lateral movement between the first-class glass half-tube 1 and the second-class glass half-tube 2 is avoided, thereby preventing the possibility of accidental separation.

[0083] Embodiment 2:

[0084] Based on the above embodiment 1, further description is given.

[0085] An assembly method of an assembled optical fiber isolator, the specific implementation steps of the assembly method are as follows:

[0086] Step 1, select the corresponding materials and perform preliminary assembly of the materials, specifically: select the required optical rotation isolation core 101 and two optical fiber collimators 102, at this time, check whether the optical rotation isolation core 101 and the optical fiber collimators 102 are in good function, then put the optical rotation isolation core 101 between the two inner ring pieces 5011 of the center bracket 5, and the side of the optical rotation isolation core 101 is close to the arc rib 5022, at the same time, put the optical fiber collimator 102 into the side bracket 6 from the side, so that the preliminary assembly of the materials can be completed;

[0087] Step 2, putting the preliminarily assembled materials into the inner sleeve 3 and preliminarily encapsulating them, specifically: placing the center bracket 5 in the inner middle of the first-class glass half sleeve 1, and the inner ring piece 5011 and the arc rib 5022 of the center bracket 5 are clamped with the arc double limit strip 103, then, placing the edge bracket 6 between the arc baffle 104 and the outer ring piece 5012 of the first-class glass half sleeve 1, then, buckling the second-class glass half sleeve 2 on the top of the first-class glass half sleeve 1, so that the clamping strip 105 and the clamping groove 201 are correspondingly clamped, and at the same time, the first-class glass half sleeve 1 and the second-class glass half sleeve 2 are combined to form the inner sleeve 3, and the preliminarily assembled materials are encapsulated inside the inner sleeve 3;

[0088] Step 3: Complete the repackaging of the material, specifically: use the outer sleeve 4, and slowly screw the outer sleeve 4 into one end of the inner sleeve 3 along the thread direction until the inner sleeve 3 is completely inside the outer sleeve 4;

[0089] Step 4: Complete the assembly of the entire optical fiber isolator, specifically: push the optical fiber docking terminal 7 from the end of the inner sleeve 3, at this time, the limiting slide 7011 slides along the direction of the limiting slide groove 1041, and at the same time, use the protrusion 703 to rotate the threaded knob disk 702, and while the threaded knob disk 702 is screwed in, push the limiting slide 7011 to continue moving until the docking plug 701 and the docking socket 1021 form a snap connection, and use the same method to install another optical fiber docking terminal 7, so that the assembly process of the entire optical fiber isolator can be completed.

[0090] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An assembled optical fiber isolator, comprising a glass half-tube (1), an optically active isolation core (101) arranged in the middle of the glass half-tube (1), and optical fiber collimators (102) respectively arranged at both ends of the optically active isolation core (101), characterized in that: A second type of glass half-tube (2) is arranged at the top of the first type of glass half-tube (1), and the first type of glass half-tube (1) and the second type of glass half-tube (2) are combined to form an inner tube (3), and an outer tube (4) is threadedly connected to the outer side of the inner tube (3); A central support (5) is clamped at the middle position of the interior of the first-class glass half-tube (1), and the central support (5) comprises a partition end (501) and a central connecting piece (502). There are two partition ends (501), which are respectively fixed at two ends of the central connecting piece (502). Side supports (6) are installed on both sides of the interior of the first-class glass half-tube (1), and the side supports (6) comprise two circular rails (601) and three arc-shaped slides (602). The two ends of the arc-shaped slide (602) are respectively slidably connected to the circular rails (601) at corresponding positions. Both ends of the inner sleeve (3) are threadedly connected with optical fiber butt ends (7), and an optical fiber conductor (8) is fixedly arranged at one end of the optical fiber butt end (7) away from the inner sleeve (3).

2. The assembled optical fiber isolator according to claim 1, characterized in that: The separation end head (501) comprises an inner ring piece (5011) and an outer ring piece (5012), a plurality of oblique connecting rods (5013) are fixedly connected between the inner ring piece (5011) and the outer ring piece (5012), the central circular holes of the inner ring piece (5011) and the outer ring piece (5012) have the same aperture, and the outer diameter of the inner ring piece (5011) is greater than the outer diameter of the outer ring piece (5012); The central connecting member (502) comprises two parallel long transverse straight rods (5021), the two ends of the long transverse straight rods (5021) are respectively fixed to the corresponding inner ring sheets (5011), and arc-shaped ribs (5022) are fixedly arranged at the three equal points of the long transverse straight rods (5021), and the inner diameter of the arc-shaped ribs (5022) is equal to the inner diameter of the optical rotation isolation core (101); Four groups of arc-shaped double limit strips (103) are fixedly arranged in the middle of the first-class glass half-tube (1), two groups of arc-shaped double limit strips (103) located in the middle position are respectively clamped with the arc-shaped ribs (5022) at the corresponding positions, and two groups of arc-shaped double limit strips (103) located at the edge positions are respectively clamped with the inner ring pieces (5011) at the corresponding positions.

3. The assembled optical fiber isolator according to claim 1, characterized in that: The arc-shaped sliding member (602) comprises two arc-shaped sliding heads (6021) and two transverse short straight rods (6022), the two arc-shaped sliding heads (6021) slide on the corresponding circular rails (601) respectively, and the two ends of the transverse short straight rods (6022) are respectively fixed to the corresponding arc-shaped sliding heads (6021); The inner arc surface of the arc slider (6021) is in close contact with the optical fiber collimator (102).

4. The assembled optical fiber isolator according to claim 2, characterized in that: The optical fiber docking end (7) comprises a docking plug (701); one end of the optical fiber collimator (102) is fixedly provided with a docking socket (1021); the docking plug (701) forms a snap connection with the docking socket (1021) after movement; Both ends of the first-class glass half-tube (1) are fixedly provided with arc-shaped baffles (104); the bottom end of the docking plug (701) is fixedly provided with a limit slide (7011); a limit slide groove (1041) is provided on the arc-shaped baffle (104); and the limit slide (7011) is slidably connected with the limit slide groove (1041) when moving; A threaded knob disk (702) is movably connected to the side of the docking plug (701) via a bearing, and internal threads (301) are fixedly provided at both ends of the inner sleeve (3). The threaded knob disk (702) is threadedly connected to the inner sleeve (3) via the internal threads (301), and a protrusion (703) is fixedly provided on the side of the threaded knob disk (702) away from the docking socket (1021).

5. The assembled optical fiber isolator according to claim 1, characterized in that: A clamping strip (105) is fixedly provided on the edge of the first-class glass half-tube (1), and a clamping groove (201) is fixedly opened on the edge of the second-class glass half-tube (2), and the clamping strip (105) is correspondingly clamped with the clamping groove (201).

6. A method for assembling the assembled optical fiber isolator according to any one of claims 4 to 5, characterized in that: The steps include: Step 1: Select the corresponding materials and perform preliminary assembly of the materials: select the required optical rotation isolation core (101) and two optical fiber collimators (102), place the optical rotation isolation core (101) into the central support (5), and place the optical fiber collimator (102) into the side support (6); Step 2: Place the preliminarily assembled materials into the inner sleeve (3) and perform preliminarily encapsulation, specifically: place the central support (5) in the middle of the first glass half sleeve (1), place the side support (6) between the arc-shaped baffle (104) and the outer ring sheet (5012) of the first glass half sleeve (1), then buckle the second glass half sleeve (2) on top of the first glass half sleeve (1), so that the first glass half sleeve (1) and the second glass half sleeve (2) are combined to form the inner sleeve (3), and the preliminarily assembled materials are encapsulated inside the inner sleeve (3); Step 3: completing the repackaging of the material, specifically: the outer sleeve (4) is slowly screwed into one end of the inner sleeve (3) along the thread direction until the inner sleeve (3) is completely inside the outer sleeve (4); Step 4: Complete the assembly of the entire optical fiber isolator, specifically: push the optical fiber butt end (7) into the end of the inner sleeve (3) and lock it using a threaded knob (702). At the same time, use the same method to install another optical fiber butt end (7) and complete the assembly process of the entire optical fiber isolator.

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