Miniature three-port wavelength division multiplexer

Abstract

The utility model discloses a miniature three-port wavelength division multiplexer, which comprises a wavelength division multiplexer main body, the wavelength division multiplexer main body comprises a light filter tube body, two ends of the light filter tube body are respectively provided with a mounting tube sleeve I and a mounting tube sleeve II in a threaded rotation manner, and the light filter tube body is internally provided with a focusing lens and a filter lens; by designing a reinforced fixing mechanism, after the emergent optical fiber ferrule is closed in a second mounting pipe sleeve, an adjusting nut drives a threaded rod to move when rotating on the outer surface of the threaded rod, the threaded rod drives an anti-skid reinforcing clamping plate to move in a moving groove when moving, and the anti-skid reinforcing clamping plate stably moves, clamps and is fixed to the surface of the emergent optical fiber ferrule. The emergent optical fiber ferrule and the second mounting pipe sleeve are fixedly mounted conveniently, so that the first mounting pipe sleeve and the connecting optical fiber ferrule are reinforced and mounted again, and the emergent optical fiber ferrule and the connecting optical fiber ferrule are reinforced and mounted before use.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-port wavelength division multiplexers, and in particular relates to a miniature three-port wavelength division multiplexer. Background Art

[0002] The existing three-port wavelength division multiplexer uses a communication technology that combines a series of optical signals carrying information but with different wavelengths into one beam, transmits it along a single optical fiber, and then uses some method to separate the optical signals of different wavelengths at the receiving end.

[0003] According to a miniature three-port wavelength division multiplexer disclosed in the authorized patent application No. 201821287986.5, when the existing three-port wavelength division multiplexer is in use, the output fiber optic ferrule and the connecting fiber optic ferrule are directly closed in the installation tube sleeves at both ends, and it is not convenient to reinforce the installation of the output fiber optic ferrule and the connecting fiber optic ferrule after the sleeve installation. When in use, when the output fiber optic ferrule and the connecting fiber optic ferrule are subjected to external tension, the ends are easily loosened, the contact is poor, or even fall off, affecting the problem of strengthening the fixation of the output fiber optic ferrule and the connecting fiber optic ferrule when the three-port wavelength division multiplexer is in use. For this reason, the utility model proposes a miniature three-port wavelength division multiplexer. Utility Model Content

[0004] The purpose of the present utility model is to provide a miniature three-port wavelength division multiplexer to solve the problem proposed in the above background technology that when the three-port wavelength division multiplexer is used, it is not convenient to reinforce the installation of the output fiber optic ferrule and the connecting fiber optic ferrule after the three-port wavelength division multiplexer is installed. When the output fiber optic ferrule and the connecting fiber optic ferrule are subjected to external tension during use, the ends of the output fiber optic ferrule and the connecting fiber optic ferrule are easily loosened, have poor contact, or even fall off.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a miniature three-port wavelength division multiplexer, comprising a wavelength division multiplexer main body, the wavelength division multiplexer main body comprising a filter tube body, a first mounting sleeve and a second mounting sleeve being respectively threadedly rotatably mounted on both ends of the filter tube body, a focusing lens and a filter being disposed within the filter tube body, a connecting fiber optic ferrule being disposed within the first mounting sleeve and extending to the side of the focusing lens, an incoming fiber optic and a reflecting fiber optic being disposed within the connecting fiber optic ferrule, an outgoing fiber optic ferrule being disposed within the second mounting sleeve and extending to one side of the filter, and the wavelength division multiplexer main body further comprising:

[0006] A strengthening and fixing mechanism, wherein the strengthening and fixing mechanism comprises a clamping and reinforcing component provided on the inner surface of the first and second mounting sleeves, wherein the end of the clamping and reinforcing component is located inside the second mounting sleeve and is provided with a movable adjustment component;

[0007] A fixed installation mechanism comprises a sleeve connection component, an inner surface of the sleeve connection component is provided with an extrusion fixing component, and an end portion of the extrusion fixing component is provided with a limit component.

[0008] Preferably, the clamping reinforcement component includes a movable groove opened at the edge of the inner surface of the mounting pipe sleeve one and the mounting pipe sleeve two, an anti-slip reinforcement splint is provided inside the movable groove, control sliders are provided at both ends of the anti-slip reinforcement splint, and a control slide groove is opened in the middle position of the two sides of the interior of the movable groove.

[0009] Preferably, the movable adjustment component includes an internal threaded groove opened on one side of the movable groove and located inside the mounting sleeve 2, a threaded rod is provided inside the internal threaded groove, the bottom end of the threaded rod is fixed to the surface of the anti-slip reinforcement splint by a screw, and the end of the threaded rod is located on the outer surface of the threaded rod and is rotated with an adjusting nut.

[0010] Preferably, an external threaded cover is threadedly rotated on the end surface of the internal thread groove, and the external threaded cover is an annular structure.

[0011] Preferably, the sleeve connection assembly includes two fixing rings fixedly mounted inside the filter tube body, and the focusing lens and the filter are respectively inserted into the interior of each fixing ring.

[0012] Preferably, the extrusion fixing assembly includes an outer bevel extrusion fixing plate arranged at the inner edge of the fixing ring, the inner surface of the fixing ring is threaded with an outer threaded ring, and the inner surface of the outer threaded ring is integrally formed with an extrusion bevel.

[0013] Preferably, the limiting assembly includes a limiting groove opened at the top inner portion of the fixing ring, a limiting block is provided inside the limiting groove, and the end of the limiting block is fixed to the end of the outer inclined surface extrusion fixing plate by a screw.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By designing a strengthened fixing mechanism, after the output fiber optic ferrule is closed inside the second mounting sleeve, the adjusting nut drives the threaded rod to move when the outer surface of the threaded rod rotates, and the threaded rod drives the anti-slip reinforcement splint to move inside the moving groove when the threaded rod moves. The anti-slip reinforcement splint stably moves and clamps on the surface of the output fiber optic ferrule, making it easy to fix the output fiber optic ferrule and the second mounting sleeve, thereby reinforcing the installation between the mounting sleeve and the connecting fiber optic ferrule again. The output fiber optic ferrule and the connecting fiber optic ferrule are reinforced before use, and are not prone to loosening, poor contact or falling off when subjected to tension, thereby improving the enhanced fixation of the output fiber optic ferrule and the connecting fiber optic ferrule when the wavelength division multiplexer main body is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the utility model;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 This is a schematic diagram of the anti-slip reinforcement splint and threaded rod structure of the utility model;

[0020] Figure 5 For this utility model Figure 2 The enlarged structural diagram of part B in the middle;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the external inclined surface extrusion fixing plate, external thread ring and extrusion inclined surface of the utility model;

[0022] In the figure: 100, wavelength division multiplexer body; 101, filter tube body; 102, mounting sleeve 1; 103, mounting sleeve 2; 104, output fiber ferrule; 1041, movable groove; 1042, anti-slip reinforcement splint; 1043, control slider; 1044, control slide groove; 1045, threaded rod; 1046, internal thread groove; 1047, external thread cover; 1048, adjusting nut; 105, connecting fiber ferrule; 1051, entering fiber; 1052, reflecting fiber; 106, focusing lens; 1061, fixing ring; 1062, external inclined surface extrusion fixing plate; 1063, external thread ring; 1064, extrusion inclined surface; 1065, limit groove; 1066, limit block; 107, filter. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 6The present invention provides a technical solution: a miniature three-port wavelength division multiplexer, including a wavelength division multiplexer main body 100, the wavelength division multiplexer main body 100 includes a filter tube body 101, and the two ends of the filter tube body 101 are respectively threaded and rotatably mounted with a mounting sleeve 102 and a mounting sleeve 2 103, the filter tube body 101 is provided with a focusing lens 106 and a filter 107 inside, the mounting sleeve 102 is provided with a connecting optical fiber ferrule 105 inside and extending to the side of the focusing lens 106, the connecting optical fiber ferrule 105 is provided with an incoming optical fiber 1051 and a reflecting optical fiber 1052 inside, the mounting sleeve 2 103 is provided with an outgoing optical fiber ferrule 104 inside and extending to the filter 10 7, when the wavelength division multiplexer main body 100 is fixedly installed and used, the optical signal of one port enters the focusing lens 106 through the input optical fiber 1051 inside the connecting optical fiber ferrule 105 after optical path collimation. The optical signal is partially reflected by the filter 107 and partially transmitted by the filter. The reflected optical signal returns to the focusing lens 106 and returns to the connecting optical fiber ferrule 105. The reflected optical signal enters the reflecting optical fiber 1052 of the other port connected to the connecting optical fiber ferrule 105 installed in the first mounting sleeve 102. The transmitted optical signal passes through the filter 107 and enters the output optical fiber ferrule 104 inside the second mounting sleeve 103. The wavelength division multiplexer main body 100 is also provided with:

[0025] A strengthening fixing mechanism is provided, and the strengthening fixing mechanism includes a clamping reinforcement component arranged on the inner surface of the mounting sleeve 102 and the mounting sleeve 2 103. The end of the clamping reinforcement component is located inside the mounting sleeve 2 103 and is provided with a movable adjustment component. Before the wavelength division multiplexer main body 100 is used, the output optical fiber ferrule 104 and the connecting optical fiber ferrule 105 are closed. The strengthening fixing mechanism can strengthen the fixing and installation of the output optical fiber ferrule 104 and the connecting optical fiber ferrule 105. When the wavelength division multiplexer main body 100 is used, it is not easy to cause loosening, poor contact or falling off when subjected to tension, thereby improving the strengthening fixation of the output optical fiber ferrule 104 and the connecting optical fiber ferrule 105 when the wavelength division multiplexer main body 100 is in use.

[0026] In order to facilitate the reinforcement and installation of the output fiber optic ferrule 104 and the connecting fiber optic ferrule 105 through the clamping and reinforcement component, in this embodiment, preferably, the clamping and reinforcement component includes a movable groove 1041 opened at the edge of the inner surface of the installation sleeve 102 and the installation sleeve 2 103, and the anti-slip reinforcement clamp 1042 can be moved inside the movable groove 1041 and clamped and fixed on the outer surface of the output fiber optic ferrule 104, and the connecting fiber optic ferrule 105 is fixed again. The interior of the movable groove 1041 is provided with an anti-slip reinforcement clamp 1042, and control sliders 1043 are provided at both ends of the anti-slip reinforcement clamp 1042. The middle position of the two sides of the interior of the movable groove 1041 is provided with a control slide groove 1044. When the anti-slip reinforcement clamp 1042 moves, the control slider 1043 is driven to slide and control inside the control slide groove 1044, so that the anti-slip reinforcement clamp 1042 is stably moved and reinforced.

[0027] In order to facilitate the movement, clamping and fixing of the anti-slip reinforcement splint 1042 by moving the adjustment component, so as to facilitate the reinforcement and installation of the output optical fiber ferrule 104 and the connecting optical fiber ferrule 105, in this embodiment, preferably, the movement and adjustment component includes an internal thread groove 1046 located inside the installation sleeve 103 on one side of the moving groove 1041, and a threaded rod 1045 is provided inside the internal thread groove 1046. The bottom end of the threaded rod 1045 is fixed to the surface of the anti-slip reinforcement splint 1042 by screws. The end of 1045 is located on the outer surface of the threaded rod 1045 and is rotated with an adjusting nut 1048, which can be engaged with a wrench on the outer surface of the adjusting nut 1048 for rotation. When the adjusting nut 1048 rotates, it drives the threaded rod 1045 and the anti-slip reinforcement splint 1042 to move, which is convenient for moving, adjusting and reinforcing the installation. The end surface of the internal thread groove 1046 is threadedly rotated with an external threaded cover 1047, and after the reinforced installation and adjustment, the external threaded cover 1047 is rotated again on the end of the internal thread groove 1046 for protection.

[0028] A fixed installation mechanism is provided, and the fixed installation mechanism includes a sleeve connection component, the inner surface of the sleeve connection component is provided with an extrusion fixing component, and the end of the extrusion fixing component is provided with a limit component. Before the wavelength division multiplexer main body 100 is used, the fixed installation mechanism is used to fix the focusing lens 106 and the filter 107. After installation, it is more stable when touched, thereby improving the fixity of the wavelength division multiplexer main body 100 on the focusing lens 106 and the filter 107 when in use, and making the wavelength division multiplexer main body 100 more stably installed and used.

[0029] In order to facilitate the reinforced installation and use of the focusing lens 106 and the filter 107 through the sleeve-fitting connection component, and to prevent instability when touched and vibrated, in this embodiment, preferably, the sleeve-fitting connection component includes two fixing rings 1061 fixedly installed inside the filter tube body 101, and the focusing lens 106 and the filter 107 respectively pass through the interior of each fixing ring 1061, so that the focusing lens 106 and the filter 107 can be fixedly installed inside each fixing ring 1061.

[0030] In order to facilitate the reinforcement installation of the focusing lens 106 and the filter 107 inside each fixing ring 1061 through the extrusion fixing assembly, in this embodiment, preferably, the extrusion fixing assembly includes an outer bevel extrusion fixing plate 1062 arranged at the inner edge of the fixing ring 1061, and the inner surface of the fixing ring 1061 is threaded with an outer threaded ring 1063, and the inner surface of the outer threaded ring 1063 is integrally formed with an extrusion bevel 1064. The focusing lens 106 can be passed through the interior of the fixing ring 1061, and the outer threaded ring 1063 is rotated to extrude and reinforce the outer bevel extrusion fixing plate 1062 through the extrusion bevel 1064 to reinforce the filter 107 again.

[0031] In order to facilitate the stable extrusion and fixed installation of the outer inclined surface extrusion fixing plate 1062 through the limiting component, in this embodiment, preferably, the limiting component includes a limiting groove 1065 opened at the top end of the fixing ring 1061, and a limiting block 1066 is arranged inside the limiting groove 1065. The end of the limiting block 1066 is fixed to the end of the outer inclined surface extrusion fixing plate 1062 by screws, and when the outer inclined surface extrusion fixing plate 1062 is squeezed and moved, the limiting block 1066 is driven to slide and control inside the limiting groove 1065, so that the outer inclined surface extrusion fixing plate 1062 can be stably moved, clamped and fixed.

[0032] The working principle and use process of the present invention are as follows: the miniature three-port wavelength division multiplexer is first installed before use. After the fixing ring 1061 is fixed to the inside of the filter tube body 101, the focusing lens 106 and the filter 107 are respectively passed through the inside of each fixing ring 1061 and the external thread ring 1063. After the installation, the external thread ring 1063 is rotated on the inner surface of the fixing ring 1061 to contact the surface of the external inclined surface extrusion fixing plate 1062 through the extrusion inclined surface 1064, and the external inclined surface extrusion fixing plate 1062 is squeezed. When the external inclined surface extrusion fixing plate 1062 is squeezed and moved, the limit block 1066 is driven to move in the limit groove 1065. The fixing plate 1062 is pressed and fixed on the surface of the focusing lens 106 and the filter 107 by the outer inclined surface, thereby facilitating the quick fixing and installation of the focusing lens 106 and the filter 107. When the wavelength division multiplexer main body 100 is used after installation, the focusing lens 106 and the filter 107 are not easily shaken when the wavelength division multiplexer main body 100 is touched. Compared with the installation of the existing rubber ring, the fixing of the focusing lens 106 and the filter 107 by the wavelength division multiplexer main body 100 is improved during use, and the wavelength division multiplexer main body 100 is more stably installed and used.

[0033] Then, when the wavelength division multiplexer main body 100 is in use, after confirming that the distances between the connecting fiber ferrule 105 and the output fiber ferrule 104 and the internal focusing lens 106 and filter 107 meet the standards, the connecting fiber ferrule 105 and the output fiber ferrule 104 are fixed in their respective positions on the mounting sleeve 102 and the mounting sleeve 2 103. The optical signal of one port enters the focusing lens 106 through the input optical fiber 1051 inside the connecting fiber ferrule 105 after the optical path is collimated. Part of the optical signal is reflected by the filter 107, and part is transmitted by the filter 107. The reflected light signal returns to the focusing lens 106 and returns to the connecting fiber ferrule 105. The reflected light signal will enter the reflection optical fiber 1052 of the other port connected to the connecting fiber ferrule 105 installed in the mounting sleeve 102. The transmitted light signal enters the output fiber ferrule 104 inside the mounting sleeve 2 103 after passing through the filter 107.

[0034] Finally, when the wavelength division multiplexer body 100 is installed before use, the output fiber optic ferrule 104 and the connecting fiber optic ferrule 105 are respectively closed inside the installation sleeve 2 103 and the installation sleeve 1 102, and the wrench is again engaged with the outer surface of the adjusting nut 1048 to rotate. When the adjusting nut 1048 rotates on the outer surface of the threaded rod 1045, it drives the threaded rod 1045 to move. When the threaded rod 1045 moves, it drives the anti-skid reinforcement clamping plate 1042 to move inside the moving groove 1041. At the same time, the control slider 1043 is slidably controlled inside the control slide groove 1044, so that the anti-skid reinforcement clamping plate 1042 can be stably moved and clamped. It is fixed on the surface of the output fiber optic ferrule 104, which is convenient for fixing the output fiber optic ferrule 104 and the second installation sleeve 103, thereby reinforcing the installation between the first installation sleeve 102 and the connecting fiber optic ferrule 105, and facilitating the reinforcement installation of the output fiber optic ferrule 104 and the connecting fiber optic ferrule 105 before the wavelength division multiplexer main body 100 is installed and used. After the wavelength division multiplexer main body 100 is installed and used, it is not easy to cause loosening, poor contact or falling off when subjected to tension. The wavelength division multiplexer main body 100 is stably installed, and the enhanced fixation of the wavelength division multiplexer main body 100 for the output fiber optic ferrule 104 and the connecting fiber optic ferrule 105 when in use is improved.

[0035] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A miniature three-port wavelength division multiplexer, comprising a wavelength division multiplexer main body (100), wherein the wavelength division multiplexer main body (100) comprises a filter tube body (101), wherein a first mounting sleeve (102) and a second mounting sleeve (103) are respectively threadedly rotatably mounted on both ends of the filter tube body (101), wherein a focusing lens (106) and a filter (107) are arranged inside the filter tube body (101), wherein a connecting optical fiber ferrule (105) is arranged inside the first mounting sleeve (102) and extends to the side of the focusing lens (106), wherein an incoming optical fiber (1051) and a reflecting optical fiber (1052) are arranged inside the connecting optical fiber ferrule (105), wherein an outgoing optical fiber ferrule (104) is arranged inside the second mounting sleeve (103) and extends to one side of the filter (107), wherein: The wavelength division multiplexer body (100) is further provided with: A reinforcing fixing mechanism includes a clamping and reinforcing assembly provided on the inner surface of the first mounting sleeve (102) and the second mounting sleeve (103), wherein the end of the clamping and reinforcing assembly is located inside the second mounting sleeve (103) and is provided with a movable adjustment assembly; A fixed installation mechanism comprises a sleeve connection component, an inner surface of the sleeve connection component is provided with an extrusion fixing component, and an end portion of the extrusion fixing component is provided with a limit component.

2. The micro three-port wavelength division multiplexer according to claim 1, characterized in that: The clamping reinforcement component includes a movable groove (1041) provided at the inner surface edge of the installation pipe sleeve 1 (102) and the installation pipe sleeve 2 (103), an anti-slip reinforcement splint (1042) is provided inside the movable groove (1041), control sliding blocks (1043) are provided at both ends of the anti-slip reinforcement splint (1042), and a control sliding groove (1044) is provided at the middle position of both sides of the interior of the movable groove (1041).

3. The micro three-port wavelength division multiplexer according to claim 2, characterized in that: The movable adjustment component includes an internal thread groove (1046) opened on one side of the movable groove (1041) and located inside the second mounting sleeve (103); a threaded rod (1045) is provided inside the internal thread groove (1046); the bottom end of the threaded rod (1045) is fixed to the surface of the anti-slip reinforcement splint (1042) by screws; the end of the threaded rod (1045) is located on the outer surface of the threaded rod (1045) and is rotated with an adjustment nut (1048).

4. The micro three-port wavelength division multiplexer according to claim 3, characterized in that: An external threaded cover (1047) is threadedly rotated on the end surface of the internal thread groove (1046), and the external threaded cover (1047) is an annular structure.

5. The micro three-port wavelength division multiplexer according to claim 1, characterized in that: The sleeve connection assembly comprises two fixing rings (1061) fixedly mounted inside the filter tube body (101), and the focusing lens (106) and the filter (107) respectively pass through the interior of each fixing ring (1061).

6. The micro three-port wavelength division multiplexer according to claim 5, characterized in that: The extrusion fixing assembly comprises an outer inclined extrusion fixing plate (1062) arranged at the inner edge of a fixing ring (1061); an outer threaded ring (1063) is threadedly rotated on the inner surface of the fixing ring (1061); and an extrusion inclined surface (1064) is integrally formed on the inner surface of the outer threaded ring (1063).

7. The micro three-port wavelength division multiplexer according to claim 6, characterized in that: The limiting assembly comprises a limiting groove (1065) provided at the top end of the fixing ring (1061), a limiting block (1066) being arranged inside the limiting groove (1065), and an end of the limiting block (1066) being fixed to an end of the outer inclined surface extrusion fixing plate (1062) by screws.

Images