Hybrid device and laser

Abstract

The application provides a hybrid device and a laser, mainly relates to the field of laser technology, and can solve the problems of many optical components, large space occupation and high cost in the existing laser. The hybrid device comprises an input end collimator, an output end collimator, a pump light collimator, an isolator, a filter and a beam combining module. The input end collimator is used for receiving signal light, the isolator is used for transmitting the signal light from the input end collimator to the filter, the filter is used for filtering the signal light to obtain first light, the pump light collimator is used for receiving pump light, the beam combining module is used for combining the first light and the pump light output by the pump light collimator to obtain first combined light, and the output end collimator is used for outputting the first combined light.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and more particularly to a hybrid device and a laser. Background Technology

[0002] With the rapid development of lasers, cost reduction has become an essential task for every laser manufacturer. Conventional high-power fiber lasers typically include multiple functional devices, each containing multiple components, such as an input collimator, an output collimator, and at least one corresponding functional component. As a result, existing lasers suffer from numerous components, large space requirements, and high costs. Furthermore, because functional devices need to be fused together using a fusion splicer, a fusion point exists, and each fusion point introduces fusion loss and beam quality degradation, affecting the quality of the final transmitted laser beam. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a hybrid device and laser that can solve the problems of numerous optical components, large space occupation, and high cost in existing lasers.

[0004] In a first aspect, this application provides a hybrid device, comprising an input collimator, an output collimator, a pump light collimator, an isolator core, a filter, and a beam combining module. The input collimator receives signal light, the isolator core transmits signal light from the direction of the input collimator to the filter, the filter filters the signal light to obtain a first light beam, the pump light collimator receives pump light, the beam combining module combines the first light beam and the pump light output from the pump light collimator to obtain a first combined beam, and the output collimator outputs the first combined beam.

[0005] Based on the hybrid device provided in this application, components such as the input collimator, output collimator, pump light collimator, isolator core, filter, and beam combiner module are integrated together. The isolator core is used to isolate the signal light; the filter is used to filter the signal light; and the beam combiner module is used to couple the signal light and pump light. Therefore, on the one hand, the hybrid device provided in this application can realize multiple functions of multiple independent functional devices such as fiber isolators, mode field matchers, and beam combiners, achieving component integration and miniaturization. Compared with using multiple independent functional devices, this hybrid device reduces the overall number of components, thus saving manufacturing costs. On the other hand, the components in the hybrid device provided in this application do not need to be fused together using a fusion splicer, thus reducing the impact on beam quality caused by fusion splicing.

[0006] In one possible design, the hybrid device also includes a pump source for transmitting pump light to a pump collimator.

[0007] Based on the above-mentioned alternatives, this application also integrates the pump light source into the hybrid device. The pump light source does not need to be fused with a fusion splicer and other components, which further reduces the impact on beam quality caused by fusion splicing.

[0008] In one possible design, the hybrid device also includes a beam splitter and a beam splitter collimator. The beam splitter is located between the input collimator and the isolator core. The beam splitter is used to split the signal light into two paths: one path is output to the isolator core, and the other path is transmitted to a monitor for monitoring the intensity of the signal light.

[0009] Based on the above options, the hybrid device can directly output a signal beam for monitoring without the need for a separate beam splitter. This further realizes the integration and miniaturization of components and avoids the impact on beam quality caused by fusion when using a separate beam splitter.

[0010] In one possible design approach, the hybrid device also includes a monitor.

[0011] Based on the above-mentioned alternative approach, the monitor is also integrated into the hybrid device. The monitor does not need to use a fusion splicer and other components for splicing, which further reduces the impact on beam quality caused by splicing.

[0012] In one possible design, the hybrid device also includes an indicator collimator for receiving the indicator light, and a beam combining module specifically for combining the signal light, pump light and indicator light to obtain a first combined light.

[0013] Based on the above-mentioned optional method, by placing the indicator light collimator in the hybrid device, the hybrid device can realize the coupling of signal light, pump light and indicator light, and can combine several different lights into a solid beam combiner without the need for a separate beam combiner.

[0014] In one possible design, the hybrid device also includes a red laser, which is used to output the indicator light to the indicator collimator.

[0015] Based on the above-mentioned alternatives, the red laser is also integrated into the hybrid device. The red laser does not need to be fused with a fusion splicer and other components, which further reduces the impact on beam quality caused by fusion splicing.

[0016] In one possible design, the beam combining module includes a first wavelength division multiplexer and a second wavelength division multiplexer. The first wavelength division multiplexer is used to combine the first beam and the indicator beam to obtain a second beam combining beam, and the second wavelength division multiplexer is used to combine the second beam combining beam and the pump beam to obtain the first beam combining beam.

[0017] In one possible design, the beam diameter of each fiber collimator in the hybrid device is between 0.20 mm and 0.50 mm.

[0018] Based on the above-mentioned optional methods, the hybrid device provided in this application designs the beam diameter of each collimator to ensure smaller matching deviations between collimators, realize the fiber transition function, and avoid problems such as mode degradation and beam quality deterioration.

[0019] In one possible design, the hybrid device also includes a housing containing the input collimator, the output collimator, the pump light collimator, the isolator, the filter, and the beam combiner module.

[0020] Based on the above optional methods, a housing is provided in the hybrid device, which protects each component and thus increases the service life of each component.

[0021] In a second aspect, this application provides a laser including a hybrid device as described in any alternative embodiment of the first aspect, wherein the hybrid device is located between a secondary amplifier and a tertiary amplifier of the laser.

[0022] The structure of this application, as well as its other objects and beneficial effects, will be described in detail with reference to the accompanying drawings to make the description of the preferred embodiments more obvious and understandable. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the fiber optic collimator structure provided in Embodiment 1 of this application;

[0026] Figure 3 This is a schematic diagram of the output beam of the fiber collimator provided in Embodiment 1 of this application;

[0027] Figure 4 This is a schematic diagram of the isolator core structure provided in Embodiment 1 of this application. Figure 1 ;

[0028] Figure 5 This is a schematic diagram of the isolator core structure provided in Embodiment 1 of this application. Figure 2 ;

[0029] Figure 6 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 3 ;

[0031] Figure 8 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 4 ;

[0032] Figure 9 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 5 ;

[0033] Figure 10 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 6 ;

[0034] Figure 11 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 7 ;

[0035] Figure 12 This is a schematic diagram of the hybrid device structure provided in Embodiment 1 of this application. Figure 8 .

[0036] The following are the labeling elements in the figure:

[0037] 1-Collider; 101-Input collimator; 1011-Fiber optic cable; 1012-Encapsulating glass tube; 1013-Capillary tube; 1014-Lens; 102-Output collimator; 103-Pump light collimator; 104-Split light collimator; 105-Indicator light collimator;

[0038] 2-Isolator core; 201-First yttrium vanadate crystal; 202-Quartz optically active crystal; 203-Magneto-optical active crystal; 204-Second yttrium vanadate crystal;

[0039] 3-Filter;

[0040] 4- Bundle multiplexing module; 401-First wavelength division multiplexer; 402-Second wavelength division multiplexer;

[0041] 5-Pump laser;

[0042] 6- Beam splitter;

[0043] 7-Monitor;

[0044] 8-Red laser;

[0045] 9-Encapsulation housing. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this application, it should be understood that the terms "inner", "outer", "upper", "bottom", "front", "rear", etc., indicating the orientation or positional relationship (if any), are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] With the rapid development of lasers, cost reduction has become an essential task for every laser manufacturer. Currently, conventional high-power fiber lasers typically include multiple functional devices, each containing several components, such as an input collimator, an output collimator, and at least one corresponding functional component. This results in existing lasers having numerous components, large space requirements, and high costs. Furthermore, since functional devices need to be fused together using a fusion splicer, a fusion point exists, and each fusion point introduces fusion loss and beam quality degradation, affecting the quality of the final transmitted laser beam. Therefore, this application provides a hybrid device and laser that can solve the problems of numerous optical components, large space requirements, and high costs in existing lasers.

[0051] The hybrid devices and lasers provided in this application are described exemplarily with reference to the accompanying drawings.

[0052] Example 1

[0053] like Figure 1 The diagram shows the overall structure of the hybrid device provided in this application, including an input collimator 101, an output collimator 102, a pump light collimator 103, an isolator 2, a filter 3, and a beam combining module 4. The input collimator 101 receives signal light. The isolator 2 transmits the signal light from the direction of the input collimator 101 to the filter 3. The filter 3 filters the signal light to obtain a first light beam. The pump light collimator 103 receives pump light. The beam combining module 4 combines the first light beam and the pump light output from the pump light collimator 103 to obtain a first combined beam. The output collimator 102 outputs the first combined beam.

[0054] The input collimator 101 and pump light collimator 103 are used to couple the received light into the hybrid device with maximum efficiency. In this embodiment, the input collimator 101 receives the signal light transmitted from the previous stage optical path or functional device and couples the signal light into the hybrid device. The pump light collimator 103 receives the pump light emitted by the pump source and couples the pump light into the hybrid device to achieve modulation of the signal light.

[0055] The output collimator 102 is used to receive the first combined light after processing by the beam combining module 4, and to transmit the first combined light to the next stage optical path or component.

[0056] The pump light collimator 103 is used to receive the pump light transmitted by the components.

[0057] For example, such as Figure 2As shown, an optical fiber collimator typically consists of an optical fiber 1011, a glass encapsulation tube 1012, a capillary tube 1013, and a lens 1014. The optical fiber 1011 is fixed inside the capillary tube 1013 to form the optical fiber head. To enhance return loss, the end face of the optical fiber head can be machined into an 8° inclined plane. The flat end of the lens 1014 is also machined into an 8° inclined plane. During the assembly of the collimator, both the optical fiber head and the lens 1014 are placed inside the glass encapsulation tube 1012, and the optical fiber head and the lens 1014 are adjusted to be parallel to each other.

[0058] In one example, the hybrid device designed in this scheme includes three fiber collimators. Since the wavelengths of the signal light received by the input collimator 101, the first combined light received by the output collimator 102, and the pump light received by the pump light collimator 103 are different, the pigtails of the three fiber collimators used in the hybrid device are different and the operating wavelengths are different.

[0059] In one example, to reduce the coupling loss between fiber collimators of different pigtail types, this application also provides a fiber collimator design scheme. By adjusting the parameters and settings of the fiber head and lens 1014 within the fiber collimator, the output beam diameter of the fiber collimator is made to be approximately between 0.20mm and 0.50mm, thereby reducing the coupling loss between the fiber collimators. For example, such as... Figure 3 The figure shown is a simulation diagram of the beam diameter at different distances output by the fiber optic collimator.

[0060] For example, for the input collimator 101, according to Figure 3 As required, the radius of curvature of the lens 1014 set in the fiber of the input collimator 101 can be 2.2mm, and the length of the lens 1014 is 4.85mm. According to the simulation results, when the fiber head is 0.2mm away from the plane of the lens 1014, the beam waist diameter of the output beam of the input collimator 101 is 0.358mm, and the beam waist distance is 18mm, which meets the design scheme that the output beam diameter of the fiber collimator is basically between 0.20mm and 0.50mm.

[0061] For example, regarding the output collimator 102, since the smaller the matching deviation between the fiber collimators, the higher the working efficiency of the fiber collimator and the smaller the coupling wear between the two fiber collimators, the output collimator 102 can be designed according to the mode field diameter of the input collimator 101. For example, assuming that the matching deviation between the input collimator 101 and the output collimator 102 is set to 0.28%, the radius of curvature of the lens 1014 of the output collimator 102 can be 4.45mm and the length of the lens 1014 is 10.2mm. According to the simulation results, the simulated beam diameter of the fiber core output by the output collimator 102 is 0.357mm. In this way, the design scheme of having a small matching deviation between the input collimator 101 and the output collimator 102 and having the output beam diameter of the fiber collimator basically between 0.20mm and 0.50mm is satisfied.

[0062] For example, the pump light collimator 103 can be designed based on the mode field diameter of the output collimator 102. For instance, the lens 1014 of the pump light collimator 103 can have a radius of curvature of 5 mm and a length of 10.68 mm. According to simulation calculations, the diameter of the optical fiber cladding receiving aperture of the pump light collimator 103 is 2.82 mm, and theoretically, the energy coupled to the output collimator 102 is 100%.

[0063] This application designs the parameters and positions of the fiber optic heads and lenses 1014 of the input collimator 101, output collimator 102, and pump collimator 103, resulting in low matching deviations between the fiber collimators. This ensures efficient optical coupling between the fiber collimators, avoids beam quality degradation between them, and realizes the transition function of the mode field matcher to the fiber. Furthermore, since this application only requires designing each fiber collimator to achieve the function of the mode field matcher, there is no need to set an additional mode field matcher in the hybrid device, further reducing the space occupied and manufacturing cost of the hybrid device.

[0064] Generally, isolator core 2 is a passive device that allows light to pass in only one direction and prevents light from passing in the opposite direction. This avoids damage to the laser's front-end components caused by light traveling in the opposite direction. For example, the signal light emitted by the light source will have 4% reflected light traveling back towards the light source after passing through the fiber end face. The presence of this reflected light will cause a self-coupling effect in the optical path system, resulting in unstable operating efficiency and reflection noise in the hybrid device. Therefore, adding isolator 2 to the hybrid device can avoid these problems. In this embodiment, isolator core 2 can be placed after the input collimator 101 to receive the signal light output by the input collimator 101.

[0065] In one embodiment of this application, such as Figure 4 As shown, the isolator core 2 may include a first yttrium vanadate crystal 201, a quartz optically active crystal 202, a magneto-optical active crystal 203, and a second yttrium vanadate crystal 204. To achieve a compact overall size and reduce manufacturing costs, the dimensions of the first yttrium vanadate crystal 201 and the second yttrium vanadate crystal 204 can be set based on the dimensions of the hybrid device to ensure miniaturization. For example, in one possible design, such as... Figure 5 As shown, the length of the first yttrium vanadate crystal 201 and the second yttrium vanadate crystal 204 can be designed to be 12 mm, the width to be 1.5 mm, and the height to be 3 mm. In order to make the input collimator 101 and the output collimator 102 both located on the central axis of the hybrid device, the end faces of the first yttrium vanadate crystal 201 and the second yttrium vanadate crystal 204 are set as inclined planes at 95.70°.

[0066] The filter 3 is a wavelength filtering device that allows specific wavelength components in a signal to pass through while greatly attenuating other wavelength components. In this embodiment, the filter 3 filters the signal light output from the isolator core 2, removing residual pump light and redundant wavelengths from the previous optical path to obtain the first light beam, which is then output.

[0067] In one example, filter 3 could be a narrowband filter.

[0068] The beam combining module 4 can employ wavelength division multiplexing (WDM) technology, which allows two or more optical wavelength signals to transmit information simultaneously through different optical channels in the same optical fiber. In this embodiment, the beam combining module 4 can be disposed between the filter 3 and the output collimator 102. The beam combining module 4 is used to combine the first light beam filtered by the filter 3 and the pump light to obtain the first beam combined light, and then output the first beam combined light to the output collimator 102.

[0069] In one example, the beam combining module 4 can be a wavelength division multiplexer used to combine the pump light and the first light beam to obtain the first combined light.

[0070] The hybrid device provided in this application integrates an input collimator 101, an output collimator 102, a pump light collimator 103, an isolator 2, a filter 3, and a beam combiner 4 into one device, enabling a single hybrid device to perform multiple functions. This achieves component integration and miniaturization. By reducing the use of collimators and other components, the manufacturing cost of the hybrid device is saved. Furthermore, the components in the hybrid device provided in this application do not need to be welded together using a fusion splicer, thus avoiding problems such as fusion loss and beam quality degradation caused by fusion splicing, and saving manufacturing costs.

[0071] Optional, such as Figure 6 As shown, the hybrid device may also include a pump light source 5, which is used to transmit pump light to the pump light collimator. In this way, the pump light source 5 is also integrated into the hybrid device, and the pigtail of the pump light source 5 does not need to be fused with a fusion splicer and other components, which further reduces the impact on beam quality caused by fusion splicing.

[0072] In one example, the pump source 5 can be a 976nm or 915nm pump laser.

[0073] Optional, such as Figure 7 As shown, the hybrid device may also include a beam splitter 6 and a beam splitter collimator 104. The beam splitter 6 is located between the input collimator 101 and the isolator core 2. The beam splitter 6 is used to split the signal light into two paths. One path of the signal light is output to the isolator core 2, and the other path of the signal light is transmitted to the monitor 7. The monitor 7 is used to monitor the intensity of the signal light.

[0074] The beam splitter 6 is located within the hybrid device, eliminating the need for a separate beam splitter for the monitor 7 to process the signal light. This saves on manufacturing costs. Furthermore, since the beam splitter 6 can directly transmit a portion of the signal light to the monitor 7, the monitor 7 can monitor the signal light in real time, preventing damage to the laser when the signal light intensity is weak or disappears.

[0075] The beam splitter collimator 104 is used to receive a portion of the signal light after it has been split by the beam splitter 6, and outputs the signal light to the monitor 7.

[0076] For example, regarding the beam splitter collimator 104, since the smaller the matching deviation between the fiber collimators, the higher the working efficiency of the fiber collimator and the smaller the coupling wear between the two fiber collimators, the beam splitter collimator 104 can be designed according to the mode field diameter of the input collimator 101. For example, assuming that the matching deviation between the beam splitter collimator 104 and the input collimator 101 is set to 1.4%, the radius of curvature of the lens 1014 of the beam splitter collimator 104 can be 1.47 mm, and the length of the lens 1014 is 3.12 mm. According to the simulation results, the beam diameter of the simulated fiber core output by the beam splitter collimator 104 is 0.353 mm. In this way, the design scheme of having a small matching deviation between the input collimator 101 and the beam splitter collimator 104 and having the output beam diameter of the fiber collimator basically between 0.20 mm and 0.50 mm is satisfied.

[0077] Optional, such as Figure 8 As shown, the hybrid device also includes a monitor 7, which is also integrated into the hybrid device. The monitor 7 does not require the use of a fusion splicer and other components for splicing, further reducing the impact on beam quality caused by splicing.

[0078] Optional, such as Figure 9 As shown, the hybrid device also includes an indicator light collimator 105, which is used to receive the indicator light. The beam combining module 4 is specifically used to combine the signal light, pump light and indicator light to obtain the first beam combined light.

[0079] The indicator light collimator 105 is used to receive the indicator light transmitted from the previous optical path or component, and to transmit the indicator light to the next optical path or component. For example, regarding the indicator collimator 105, since the smaller the matching deviation between the fiber collimators, the higher the working efficiency of the fiber collimator and the smaller the coupling wear between the two fiber collimators, the indicator collimator 105 can be designed according to the mode field diameter of the output collimator 102. For example, assuming that the matching deviation between the indicator collimator 105 and the output collimator 102 is set to 0.42%, the indicator collimator 105 is designed with a lens 1014 with a radius of curvature of 1.15 mm and a length of 2.365 mm. According to the simulation results, the simulated beam diameter of the fiber core output by the indicator collimator 105 is 0.237 mm. In this way, the design scheme of having a small matching deviation between the input collimator 101 and the beam splitter collimator 104 and having the output beam diameter of the fiber collimator basically between 0.20 mm and 0.50 mm is satisfied.

[0080] Optional, such as Figure 9As shown, the beam combining module 4 may include a first wavelength division multiplexer 401 and a second wavelength division multiplexer 402. The first wavelength division multiplexer 401 is used to combine the first light beam and the indicator light to obtain a second beam combined light, and the second wavelength division multiplexer 402 is used to combine the second beam combined light and the pump light to obtain a first beam combined light.

[0081] In one example, such as Figure 10 As shown, the hybrid device also includes a red laser 8, which is used to output the indicator light to the indicator light collimator 105. By integrating the red laser 8 into the hybrid device, the red laser 8 does not need to be fused with a fusion splicer and other components, further reducing the impact on beam quality caused by fusion splicing.

[0082] In one example, the hybrid device also includes a package housing 9, within which all components are housed. Based on Figure 1 The hybrid device shown, such as Figure 11 As shown, the input collimator 101, the output collimator 102, the pump light collimator 103, the isolator 2, the filter 3, and the beam combiner 4 are encapsulated in the encapsulation housing 9. The encapsulation housing 9 protects each component and increases the service life of each component.

[0083] In one example, assuming the hybrid device integrates an input collimator 101, an output collimator 102, a pump light collimator 103, a beam splitter collimator 104, an indicator light collimator 105, an isolator 2, a filter 3, a first wavelength division multiplexer 401, a second wavelength division multiplexer 402, and a beam splitter 6, the structure of the hybrid device can be as follows: Figure 12 As shown, the input collimator 101, output collimator 102, pump light collimator 103, beam splitter collimator 104, indicator light collimator 105, isolator 2, filter 3, first wavelength division multiplexer 401, second wavelength division multiplexer 402, and beam splitter 6 are all encapsulated in the encapsulation housing 9. The encapsulation housing 9 protects each component and increases the service life of each component.

[0084] In one embodiment, the hybrid device provided in this application integrates all functional components. After the input collimator 101 receives the signal light, it outputs it. The output signal light is split by the beam splitter 6. A portion of the signal light is transmitted to the beam splitter collimator 104, which then outputs this portion to the monitor 7. The monitor 7 monitors this portion of the signal light to prevent damage to the laser when the signal light is weak or disappears. The other portion of the signal light is transmitted to the isolator core 2. The isolator core 3 outputs the input signal light to the filter 3, which filters this portion of the input signal light to obtain the first beam. The first wavelength division multiplexer 401 then multiplexes the first beam and the indicator light to form a second beam. The second wavelength division multiplexer 402 then multiplexes the second beam and the pump light to form the first beam, which is then output to the output collimator 102. The output collimator 102 receives and outputs the first beam. The hybrid device provided in this application integrates numerous functional components, which not only reduces the space occupied by the hybrid device and achieves miniaturization, but also avoids problems such as fusion loss and beam quality degradation caused by fusion because the components do not need to be fused together by a fusion splicer.

[0085] Example 2

[0086] Based on the hybrid device provided in Embodiment 1, this application also provides a laser, including a two-stage amplifier, a hybrid device, and a three-stage amplifier.

[0087] The laser provided in this application uses the hybrid device provided in Embodiment 1, which reduces the space occupied by the laser to a certain extent and saves manufacturing costs.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A hybrid device, characterized in that, The hybrid device includes an input collimator (101), an output collimator (102), a pump light collimator (103), an isolator core (2), a filter (3), and a beam combiner module (4). The input collimator (101) is used to receive signal light, the isolator core (2) is used to transmit the signal light from the direction of the input collimator (101) to the filter (3), the filter (3) is used to filter the signal light to obtain a first light ray, the pump light collimator (103) is used to receive pump light, the beam combining module (4) is used to combine the first light ray and the pump light output by the pump light collimator (103) to obtain a first combined light, and the output collimator (102) is used to output the first combined light; The input collimator, the output collimator, and the pump light collimator are fiber optic collimators. Each fiber optic collimator includes an optical fiber, a sealing glass tube, a capillary tube, and a lens. The optical fiber is fixed inside the capillary tube to form the fiber optic head. The end face of the fiber optic head is machined into an 8° bevel, and the flat end of the lens is also machined into an 8° bevel. During assembly, the fiber optic head and lens are placed inside the sealing glass tube and adjusted to be parallel to each other. For the input collimator, the fiber optic lens has a curvature radius of 2.2 mm and a length of 4.85 mm. When the fiber optic head is 0.2 mm away from the lens plane, the beam waist diameter of the output beam from the input collimator is 0.358 mm and the beam waist distance is 18 mm, which satisfies the requirement that the output beam diameter of the fiber collimator is between 0.2 mm and 0.5 mm. For the output collimator, the lens curvature radius is set to 4.45mm and the lens length is 10.2mm. The output collimator simulates the beam diameter of the fiber core output to be 0.357mm, which satisfies the requirement that the output beam diameter of the fiber collimator is between 0.20mm and 0.50mm. For the pump light collimator, the lens is designed with a radius of curvature of 5mm and a length of 10.68mm. The diameter of the receiving aperture of the fiber cladding of the pump light collimator is 2.82mm.

2. The hybrid device according to claim 1, characterized in that, The hybrid device also includes a pump light source (5) for transmitting pump light to the pump light collimator (103).

3. The hybrid device according to claim 1, characterized in that, The hybrid device also includes a beam splitter (6) and a beam splitter collimator (104). The beam splitter (6) is located between the input collimator (101) and the isolator core (2). The beam splitter (6) is used to split the signal light into two paths. One path of the signal light is output to the isolator core (2), and the other path of the signal light is transmitted to the monitor (7). The monitor (7) is used to monitor the intensity of the signal light.

4. The hybrid device according to claim 3, characterized in that, The hybrid device also includes the monitor (7).

5. The hybrid device according to claim 1, characterized in that, The hybrid device further includes an indicator light collimator (105) for receiving indicator light, and the beam combining module (4) is specifically used to combine the signal light, the pump light and the indicator light to obtain the first beam combining light.

6. The hybrid device according to claim 5, characterized in that, The hybrid device also includes a red laser (8) for outputting the indicator light to the indicator light collimator (105).

7. The hybrid device according to claim 5, characterized in that, The beam combining module (4) includes a first wavelength division multiplexer (401) and a second wavelength division multiplexer (402). The first wavelength division multiplexer (401) is used to combine the first light beam and the indicator light to obtain a second beam combined light. The second wavelength division multiplexer (402) is used to combine the second beam combined light and the pump light to obtain the first beam combined light.

8. The hybrid device according to any one of claims 1-7, characterized in that, The beam diameter of each fiber collimator in the hybrid device is between 0.20 mm and 0.50 mm.

9. The hybrid device according to any one of claims 1-7, characterized in that, The hybrid device also includes a housing (9), in which the input collimator (101), the output collimator (102), the pump light collimator (103), the isolator core (2), the filter (3), and the beam combining module (4) are encapsulated.

10. A laser, characterized in that, The laser includes a hybrid device as described in any one of claims 1-9, the hybrid device being located between the second-stage amplifier and the third-stage amplifier of the laser.

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