DFB laser module

Abstract

The utility model discloses a DFB laser module comprising a housing, the front end of the housing is provided with an optical fiber output port, the rear end of the housing is provided with a radio frequency input port, the right end of the housing is provided with uniformly distributed control pins, the input end of a laser chip in the housing is electrically connected with the output end of the radio frequency input port, and the DFB laser module also comprises a heat radiation mechanism. The heat dissipation mechanism comprises a rectangular cover, cooling fins, a mounting frame, a rotating shaft, a rectangular frame and a heat dissipation fan, the rectangular cover is arranged at the lower end of the shell, the cooling fins which are uniformly distributed are arranged in the rectangular cover, the mounting frame is arranged at the lower end of the rectangular cover, and the rotating shaft is rotationally connected to the middle between the front inner wall and the rear inner wall of the mounting frame; according to the DFB laser module, when the DFB laser module is used, the internal temperature of a DFB laser can be rapidly reduced, and the DFB laser is prevented from stopping working due to the fact that the temperature is too high.

Description

Technical Field

[0001] This utility model relates to the technical field of DFB laser modules, specifically a DFB laser module. Background Technology

[0002] DFB laser modules are high-performance semiconductor lasers characterized by single-wavelength output and high spectral purity. DFB lasers achieve single-wavelength laser output by introducing a grating structure into the active region of the laser chip. DFB laser modules achieve single-wavelength output through this grating structure, exhibiting high spectral purity, high stability, and low noise. They are widely used in optical communication, sensing, and measurement fields. Through continuous technological innovation and application expansion, DFB laser modules will continue to drive the development of related fields and meet the ever-growing market demand.

[0003] The existing authorized publication number CN219458297U discloses a DFB laser, including an RF input port, an optical fiber output port, a TEC chip, a focusing prism, a signal processing component, a housing, and a substrate. The RF input port, optical fiber output port, and focusing prism are located on the same central axis. The housing has an internal cavity, and the substrate and focusing prism are fixedly connected to the inner wall of the cavity. The TEC chip is fixedly connected to the substrate, and the signal processing component is fixedly connected to the TEC chip. The signal processing component includes a DFB chip, a thermistor, and a monitoring diode. The DFB chip is electrically connected to the RF input port. The thermistor is used to detect the chip temperature, and the monitoring diode is used to detect the laser's illumination intensity. The focusing prism is used to receive the laser emitted by the DFB chip and output the laser through the optical fiber output port. This utility model addresses the problem that the large space occupied by the external RF cable leads to a large laser size, which is not conducive to the miniaturization of the device.

[0004] Existing DFB laser modules of this type have the following problems: When using a DFB laser module, the internal temperature of the DFB laser will continuously rise during operation, exceeding the allowable operating temperature of the internal components in a very short time, causing the DFB laser to stop working. To address this, we propose a new DFB laser module. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a DFB laser module that can quickly cool down the internal temperature of the DFB laser when using it, thus preventing the DFB laser from stopping work due to overheating. This can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a DFB laser module, including a housing, an optical fiber output port at the front end of the housing, an RF input port at the rear end of the housing, and uniformly distributed control pins at the right end of the housing, wherein the input end of the laser chip inside the housing is electrically connected to the output end of the RF input port, and a heat dissipation mechanism is also included.

[0007] The heat dissipation mechanism includes a rectangular cover, heat sinks, a mounting frame, a rotating shaft, and a cooling fan. The lower end of the housing is provided with a rectangular cover, and the interior of the rectangular cover is provided with evenly distributed heat sinks. The lower end of the rectangular cover is provided with a mounting frame, and a rotating shaft is rotatably connected between the front and rear inner walls of the mounting frame. The outside of the rotating shaft is fixedly fitted with a rectangular frame, and the interior of the rectangular frame is provided with symmetrical cooling fans. When using the DFB laser module, the internal temperature of the DFB laser can be quickly cooled down to prevent the DFB laser from overheating and stopping operation.

[0008] Furthermore, a microcontroller is provided at the front end of the mounting frame. The input terminal of the microcontroller is electrically connected to an external power supply, and the input terminals of the cooling fan are electrically connected to the output terminals of the microcontroller, providing electrical connections for various electrical appliances.

[0009] Furthermore, the heat dissipation mechanism also includes a drive assembly, which includes a gear, a third gear, and a rotating shaft. The rear end of the rotating shaft is fixedly connected to the gear, and the front end of the mounting frame is rotatably connected to the rotating shaft. The front end of the rotating shaft is fixedly connected to the third gear, and the gear and the third gear mesh with each other and are connected by rotation.

[0010] Furthermore, the drive assembly also includes a turntable, a slide, a rotating shaft, and a rotating column. The front end of the mounting frame is provided with a protective cover, the right end of the third gear is provided with a support rod, the inside of the support rod is provided with a slide, the front side wall of the protective cover is rotatably connected to the rotating shaft, the rear end of the rotating shaft is fixedly connected to the turntable, the rear edge of the turntable is fixedly connected to the rotating column, and the outer wall of the rotating column is slidably connected to the inner wall of the slide, providing a rotational connection.

[0011] Furthermore, the drive assembly also includes a motor, which is located at the front end of the protective cover. The rear end of the motor's output shaft is fixedly connected to the front end of the rotating shaft, and the input end of the motor is electrically connected to the output end of the microcontroller to provide rotation drive.

[0012] Furthermore, a temperature sensor is provided at the middle of the left end of the housing. The probe end of the temperature sensor extends into the interior of the housing. The temperature sensor is bidirectionally electrically connected to the microcontroller for easy temperature detection.

[0013] Furthermore, all the heat sinks are made of graphite sheets, which facilitates heat dissipation.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This DFB laser module has the following advantages:

[0015] Driven by the motor, the rotating column at the top of the rotating shaft rotates and slides inside the slide groove. Then, the support rod, through the rotation of the rotating shaft, causes one-third gear to rotate. The gear, through the rotating shaft, drives the rectangular frame and the cooling fan to swing in both directions. Then, the cooling fan draws the external cold air into the rectangular cover and blows it onto the surface of the heat sink to dissipate heat from the DFB laser module. When using the DFB laser module, the internal temperature of the DFB laser can be quickly cooled down to prevent the DFB laser from overheating and stopping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model.

[0019] In the diagram: 1. Housing, 2. Fiber optic output port, 3. RF input port, 4. Control pin, 5. Temperature sensor, 6. Microcontroller, 7. Heat dissipation mechanism, 71. Rectangular cover, 72. Heat sink, 73. Mounting frame, 74. Rotating shaft, 75. Rectangular frame, 76. Cooling fan, 77. Drive assembly, 771. Gear, 772. One-third gear, 773. Rotating shaft, 774. Turntable, 775. Slide, 776. Rotating shaft, 777. Rotating column, 778. Motor, 8. Protective cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3This embodiment provides a technical solution: a DFB laser module, including a housing 1, with an optical fiber output port 2 at the front end of the housing 1, an RF input port 3 at the rear end of the housing 1, and uniformly distributed control pins 4 at the right end of the housing 1. The input end of the laser chip inside the housing 1 is electrically connected to the output end of the RF input port 3. It also includes a heat dissipation mechanism 7, with a microcontroller 6 at the front end of the mounting frame 73. The input end of the microcontroller 6 is electrically connected to an external power supply, and the input ends of the cooling fans 76 are all electrically connected to the output ends of the microcontroller 6. A temperature sensor 5 is provided in the middle of the left end of the housing 1. The detection end of the temperature sensor 5 extends into the interior of the housing 1, and the temperature sensor 5 is bidirectionally electrically connected to the microcontroller 6. The heat sinks 72 are all graphite sheets. When using the DFB laser module, when an external current is injected into the active region inside the housing 1, electrons and holes recombine to generate photons, which are emitted from the optical fiber output port 2.

[0022] The heat dissipation mechanism 7 includes a rectangular cover 71, heat sinks 72, a mounting frame 73, a rotating shaft 74, a rectangular frame 75, and a cooling fan 76. The lower end of the outer casing 1 has a rectangular cover 71, inside which are evenly distributed heat sinks 72. The lower end of the rectangular cover 71 has a mounting frame 73, and a rotating shaft 74 is rotatably connected to the middle between the front and rear inner walls of the mounting frame 73. A rectangular frame 75 is fixedly fitted onto the outside of the rotating shaft 74, and symmetrically arranged cooling fans 76 are located inside the rectangular frame 75. The heat dissipation mechanism 7 also includes a drive assembly 77, which includes a gear 771, a third gear 772, and a rotating shaft 773. The rear end of the rotating shaft 74 is fixedly connected to the gear 771, and the front end of the mounting frame 73 is rotatably connected to the rotating shaft 773. A one-third gear 772 is fixedly connected to the front end of shaft 773. Gear 771 meshes with one-third gear 772. The drive assembly 77 also includes a turntable 774, a slide groove 775, a rotating shaft 776, and a rotating column 777. A protective cover 8 is provided at the front end of the mounting frame 73. A support rod is provided at the right end of the one-third gear 772. A slide groove 775 is provided inside the support rod. The rotating shaft 776 is rotatably connected to the front side wall of the protective cover 8. The turntable 774 is fixedly connected to the rear end of the rotating shaft 776. A rotating column 777 is fixedly connected to the rear edge of the turntable 774. The outer wall of the rotating column 777 is slidably connected to the inner wall of the slide groove 775. The drive assembly 77 also includes a motor 778, which is located at the front end of the protective cover 8. The output shaft of the motor 778 is located behind... The end of the motor 778 is fixedly connected to the front end of the rotating shaft 776. The input end of the motor 778 is electrically connected to the output end of the microcontroller 6. When the DFB laser module is operating, the temperature inside the housing 1 will continuously rise. The temperature sensor 5 will detect the temperature inside the housing 1 in real time and transmit the detected data to the microcontroller 6. The microcontroller 6 integrates the information and controls the motor 778 to operate. The output shaft of the motor 778 drives the rotating shaft 776 to rotate. The rotation of the rotating shaft 776 will drive the turntable 774 to rotate. The rotation of the turntable 774 will drive the rotating column 777 to rotate and slide inside the slide groove 775. This will cause the support rod to drive the one-third gear 772 to rotate under the rotation of the rotating shaft 773. The one-third gear 772 will drive the gear When the turntable 774 drives the rotating column 777 to rotate to the six o'clock position, the support rod will rotate clockwise through the slide groove 775 and the rotating shaft 773, causing the third gear 772 to drive the gear 771 to rotate. When the turntable 774 drives the rotating column 777 to continue rotating, the support rod will rotate counterclockwise through the slide groove 775 and the rotating shaft 773, causing the third gear 772 to drive the gear 771 to rotate. This will then drive the rectangular frame 75 and the cooling fan 76 to swing back and forth through the rotating shaft 74. Then, through the control of the microcontroller 6, the cooling fan 76 will operate, drawing cold air from the outside into the rectangular cover 71 and blowing it onto the surface of the heat sink 72 to dissipate heat from the DFB laser module.

[0023] The working principle of the DFB laser module provided by this utility model is as follows: When using the DFB laser module, when an external current is injected into the active region inside the housing 1, electrons and holes recombine to generate photons. The photons are emitted from the fiber output port 2. When the DFB laser module is operating, the temperature inside the housing 1 will continuously rise. The temperature sensor 5 will detect the temperature inside the housing 1 in real time and transmit the detected data to the microcontroller 6. The microcontroller 6 integrates the information and controls the operation of the motor 778. The output shaft of the motor 778 drives the rotating shaft 776 to rotate. The rotation of the rotating shaft 776 will drive the turntable 774 to rotate. The rotation of the turntable 774 will drive the rotating column 777 to rotate and slide inside the slide groove 775, thereby causing the support rod to rotate under the rotation of the rotating shaft 773. When gear 772 rotates, it drives gear 771 to rotate. When turntable 774 drives column 777 to rotate to the six o'clock position, the slide groove 775 causes the support rod to rotate clockwise via shaft 773. When turntable 774 drives column 777 to continue rotating, the slide groove 775 causes the support rod to rotate counterclockwise via shaft 773. This, in turn, drives rectangular frame 75 and cooling fan 76 to swing in opposite directions via rotating shaft 74. Then, through microcontroller 6, cooling fan 76 operates, drawing cool air from outside into rectangular cover 71 and blowing it onto the surface of heat sink 72 to cool the DFB laser module.

[0024] It is worth noting that in the above embodiments, the temperature sensor 5, the cooling fan 76, and the motor 778 disclosed are all of the following: the temperature sensor 5 can be PT1000, the cooling fan 76 can be LD121238HBL, and the motor 778 can be gm20149-01. The microcontroller 6 controls the operation of the temperature sensor 5, the cooling fan 76, and the motor 778 using methods commonly used in the prior art.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A DFB laser module, comprising a housing (1), wherein the front end of the housing (1) is provided with an optical fiber output port (2), the rear end of the housing (1) is provided with an radio frequency input port (3), and the right end of the housing (1) is provided with uniformly distributed control pins (4), wherein the input end of the laser chip inside the housing (1) is electrically connected to the output end of the radio frequency input port (3), characterized in that: It also includes a heat dissipation mechanism (7); Heat dissipation mechanism (7): It includes a rectangular cover (71), heat sink (72), mounting frame (73), rotating shaft (74), rectangular frame (75) and cooling fan (76). The lower end of the outer shell (1) is provided with a rectangular cover (71). The interior of the rectangular cover (71) is provided with uniformly distributed heat sink (72). The lower end of the rectangular cover (71) is provided with a mounting frame (73). The middle part between the front and rear inner walls of the mounting frame (73) is rotatably connected to the rotating shaft (74). The outside of the rotating shaft (74) is fixedly fitted with a rectangular frame (75). The interior of the rectangular frame (75) is provided with symmetrical cooling fans (76).

2. The DFB laser module according to claim 1, characterized in that: The front end of the mounting frame (73) is provided with a microcontroller (6). The input end of the microcontroller (6) is electrically connected to an external power supply, and the input end of the cooling fan (76) is electrically connected to the output end of the microcontroller (6).

3. A DFB laser module according to claim 2, characterized in that: The heat dissipation mechanism (7) further includes a drive assembly (77), which includes a gear (771), a third gear (772), and a rotating shaft (773). The rear end of the rotating shaft (74) is fixedly connected to the gear (771), and the front end of the mounting frame (73) is rotatably connected to the rotating shaft (773). The front end of the rotating shaft (773) is fixedly connected to the third gear (772), and the gear (771) and the third gear (772) are meshed together.

4. A DFB laser module according to claim 3, characterized in that: The drive assembly (77) also includes a turntable (774), a slide groove (775), a rotating shaft (776), and a rotating column (777). The front end of the mounting frame (73) is provided with a protective cover (8). The right end of the third gear (772) is provided with a support rod. The inside of the support rod is provided with a slide groove (775). The front side wall of the protective cover (8) is rotatably connected to the rotating shaft (776). The rear end of the rotating shaft (776) is fixedly connected to the turntable (774). The rear edge of the turntable (774) is fixedly connected to the rotating column (777). The outer wall of the rotating column (777) is slidably connected to the inner wall of the slide groove (775).

5. A DFB laser module according to claim 4, characterized in that: The drive assembly (77) also includes a motor (778), which is located at the front end of the protective cover (8). The rear end of the output shaft of the motor (778) is fixedly connected to the front end of the rotating shaft (776), and the input end of the motor (778) is electrically connected to the output end of the microcontroller (6).

6. A DFB laser module according to claim 2, characterized in that: A temperature sensor (5) is provided at the middle of the left end of the outer shell (1). The probe end of the temperature sensor (5) extends into the interior of the outer shell (1). The temperature sensor (5) is bidirectionally electrically connected to the microcontroller (6).

7. A DFB laser module according to claim 1, characterized in that: All heat sinks (72) are graphite sheets.

Images