Optical assembly, communication device and optical communication network

Abstract

The embodiment of the application provides an optical assembly, a communication device and an optical communication network, and relates to the field of optical communication. The performance of the optical assembly is optimized. The specific scheme comprises: the optical assembly comprises a laser and a first optical waveguide. The laser is used for outputting a multimode signal light. The first optical waveguide comprises a first end and a second end arranged oppositely; the first end is used for receiving the first multimode signal light, and the second end is used for outputting a light beam from the first end. Wherein, the diameter of the core layer of the first end is 10-45 mu m, and the numerical aperture of the first end is 0.1-0.25. The rate of the multimode signal light is greater than or equal to 50 Gbps. The core layer of the first end can intercept the light rays of the high-order modes in the reflected light which are opposite to the transmission direction of the multimode signal light, reduce the noise of the laser, optimize the reliability of the laser and the optical assembly, and improve the problem of optical link flash.

Description

Technical Field

[0001] This application relates to the field of optical communication, and more particularly to an optical component, communication device and optical communication network. Background Technology

[0002] As interconnect bandwidth speeds increase, the number of interconnects also increases accordingly. Direct connections based on copper cables are limited by their high loss characteristics, leading to a dramatic increase in the number of optical interconnects. For example, in artificial intelligence and large language model training, the expansion of artificial intelligence (AI) data centers and computing clusters has resulted in a surge in the number of optical interconnects.

[0003] With the increasing number of optical interconnects, the failure of a single optical link can lead to a decline in the availability of the entire system. Reducing the failure rate of optical links is a problem that needs to be addressed in optical interconnects. Among the solutions, improving the performance of optical devices in optical links is beneficial for reducing the failure rate of optical links. Summary of the Invention

[0004] This application provides an optical component, a communication device, and an optical communication network, with the aim of optimizing the performance of the optical component.

[0005] To achieve the above objectives, this application adopts the following technical solution.

[0006] In a first aspect, this application provides an optical component. The optical component includes a laser and a first optical waveguide. The laser is used to output a first multimode signal light. The first optical waveguide includes a first end and a second end disposed opposite to each other; the first end is used to receive the first multimode signal light, and the second end is used to output a light beam from the first end. The core layer of the first end has a diameter of 10 μm-45 μm, and the numerical aperture of the first end is 0.1-0.25.

[0007] In this way, the first multimode signal light output by the laser can be coupled into the core layer at the first end. When the beam output from the second end is reflected in the optical link, the mode of the beam may change during the reflection process, increasing the number of modes in the beam. The diameter and numerical aperture of the core layer at the first end are relatively small, less than 50 μm. The number of modes supported by the core layer at the first end is relatively small compared to standard multimode fiber. The first end allows fewer modes of the beam to be coupled out. Some modes of the reflected beam are intercepted by the first end, reducing the noise entering the laser, improving the reliability of the laser and optical components, and mitigating the problem of optical link flicker.

[0008] In conjunction with the first aspect, in some feasible ways, the second end is also used to connect to standard multimode fiber.

[0009] Thus, standard multimode fiber can be used for long-distance signal transmission, allowing the first multimode signal light output from the second end to be transmitted over a considerable distance. Optical components can be used in high-speed or ultra-high-speed Ethernet or high-speed interconnect services.

[0010] In conjunction with the first aspect, in some feasible ways, the diameter of the core layer at the first end is 20 μm-35 μm, and the numerical aperture of the first end is 0.15-0.22.

[0011] This facilitates the coupling of the first multimode signal light into the core layer at the first end. It also allows the first end to effectively intercept higher-order mode light rays in the reflected beam.

[0012] In conjunction with the first aspect, in some feasible ways, the diameter of the core layer at the second end is larger than the diameter of the core layer at the first end. In this way, the first multimode signal light can be better coupled out to the standard multimode fiber in the core layer at the second end, avoiding signal loss.

[0013] In conjunction with the first aspect, in some feasible ways, the numerical aperture of the second end is 0.15-0.25.

[0014] In conjunction with the first aspect, in some feasible ways, the diameter of the core layer of the first optical waveguide gradually increases from the first end to the second end.

[0015] Thus, the core layer of the first optical waveguide changes in a gradual manner. The core layer can be fabricated using processes such as drawing, which are simple and inexpensive. For example, using standard multimode fiber as raw material and forming the core layer of the first optical waveguide using a tapering method can reduce fabrication costs.

[0016] In conjunction with the first aspect, in some feasible ways, the outer diameter of the second end is 120μm-130μm.

[0017] Therefore, in scenarios where the second end connects to a standard multimode fiber, the outer diameter of the second end is close to that of the standard multimode fiber. The second end and the standard multimode fiber can be connected using standard multimode fiber connectors. There is no need to customize connectors of other sizes for the second end, increasing its compatibility. This helps reduce the manufacturing and assembly costs of the optical link.

[0018] In conjunction with the first aspect, in some feasible embodiments, the optical component further includes an optical coupling element. This optical coupling element is used to receive the first multimode signal light, and the first end is used to receive the light beam from the optical coupling element; wherein the diameter of the light spot transmitted from the optical coupling element to the first end is smaller than the diameter of the core layer of the first end. Thus, the optical coupling element couples the first multimode signal light into the first end. Furthermore, the coupling efficiency of the first multimode signal light into the core layer of the first end is high, and the signal loss is low.

[0019] In conjunction with the first aspect, in some feasible ways, the first optical waveguide is: the transmission optical waveguide closest to the optical coupling element.

[0020] Thus, compared to other transmission waveguides between the first optical waveguide and the optical coupling element, the first end of the first optical waveguide, which is closest to the optical coupling element, intercepts higher-order modes of light, resulting in better noise interception of the laser. During the transmission of the first multimode signal light output from the laser to the first end, some modes of the beam are prevented from being filtered out as they travel from other transmission waveguides to the first end, thus avoiding energy loss of the first multimode signal light. Furthermore, during the transmission of reflected light from the first end to the laser, the absence of other transmission waveguides between the first optical waveguide and the optical coupling element prevents noise from being introduced by other waveguides.

[0021] This can prevent the high-order mode energy from being filtered out when coupled into the first optical waveguide by other transmission optical waveguides, thus avoiding the introduction of noise into the energy loss of the signal light.

[0022] In conjunction with the first aspect, in some feasible ways, the optical component also includes: a standard multimode fiber; the standard multimode fiber is used to transmit a beam of light from the second end.

[0023] In this way, optical components can be used for both short-distance and long-distance data transmission.

[0024] In conjunction with the first aspect, in some feasible embodiments, the optical component further includes a multimode optical fiber. The multimode optical fiber is used to transmit the first multimode signal light, and the first end is used to receive the beam of light from the multimode optical fiber.

[0025] In conjunction with the first aspect, in some possible implementations, the optical component further includes: a housing, in which the laser is located, and the first end is located within the housing. The second end is located within the housing, or the second end is located outside the housing.

[0026] Thus, in the example where the second end is located within the housing, the first optical waveguide and laser are protected by the housing, reducing contamination of the first optical waveguide and laser and thus improving the lifespan of the optical components. Furthermore, the outer periphery of the first optical waveguide does not require a protective cladding layer such as a coating. In the example where the second end is located outside the housing, the size of the second end is not limited by the size of the housing.

[0027] In conjunction with the first aspect, in some feasible ways, the rate of the first multimode signal light is greater than or equal to 50 Gbps.

[0028] In conjunction with the first aspect, in some feasible ways, the distance from the first end to the laser is less than or equal to 20 cm.

[0029] Thus, the distance from the first end of the first optical waveguide to the laser is small, the optical transmission path is short, and the first end has a better filtering effect on noise entering the laser. This is beneficial to improving the performance of the laser.

[0030] In conjunction with the first aspect, in some implementable embodiments, the optical component further includes a receiver and a filter. The second end is also used to receive a second multimode signal light, and the first end is also used to output the second multimode signal light. The filter is used to transmit the second multimode signal light from the first end to the receiver. The filter is also used to transmit the first multimode signal light from the laser to the first end.

[0031] In conjunction with the first aspect, in some feasible embodiments, the optical component further includes a receiver and a second optical waveguide. The second optical waveguide includes a third end and a fourth end disposed opposite to each other; the third end is used to receive a second multimode signal light, and the fourth end is used to output the second multimode signal light from the third end. The receiver is used to receive the second multimode signal light from the fourth end. The core layer of the fourth end has a diameter of 10 μm-45 μm, and the numerical aperture of the fourth end is 0.1-0.25.

[0032] In conjunction with the first aspect, in some feasible ways, the power ratio of the beam output from the second end to the power of the first multimode signal light output from the laser is greater than or equal to 80%. Thus, during the transmission of the first multimode signal light output from the laser to the second end, power loss is minimal, and optical coupling and the loss of the first multimode signal light by the first optical waveguide are also minimal.

[0033] Secondly, this application provides a communication device. The communication device includes a processor and any of the optical components provided in the first aspect, wherein the processor is used to send an electrical signal to a laser, and the laser is used to convert the electrical signal into the first multimode signal light. Due to the improved performance of the optical component, the performance of the communication device including the optical component is improved.

[0034] Thirdly, this application provides an optical communication network. The optical communication network includes: an optical receiving component, a standard multimode optical fiber, and any of the optical components provided in the first aspect above. The standard multimode optical fiber is used to transmit a light beam emitted from its second end to the optical receiving component. Due to the improved performance of the optical component, the communication quality of the optical communication network including the optical component is improved.

[0035] Regarding the beneficial effects of the second and third aspects, please refer to the description of any optional implementation method in the first aspect, which will not be repeated here. Based on the implementation methods provided in the above aspects, this application can also be further combined to provide more implementation methods. Attached Figure Description

[0036] Figure 1a This is a schematic diagram of the structure of an optical communication network.

[0037] Figure 1b This is a schematic diagram of another type of optical communication network.

[0038] Figure 1c This is a schematic diagram of another type of optical communication network.

[0039] Figure 2a This is a schematic diagram of the structure of an optical component provided in an embodiment of this application.

[0040] Figure 2b This is a schematic diagram of the optical path between the laser and the first optical waveguide.

[0041] Figure 3 This is a schematic diagram of the structure of another optical component provided in an embodiment of this application.

[0042] Figure 4 This is a schematic diagram of another optical component provided in an embodiment of this application.

[0043] Figure 5 This is a schematic diagram of another optical component provided in an embodiment of this application.

[0044] Figure 6 This is a schematic diagram of another optical component provided in an embodiment of this application.

[0045] Figure 7 This is a schematic diagram of an optical component including a filter, provided as an embodiment of this application.

[0046] In the diagram: 10-Optical communication network; 11-First communication device; 12-Second communication device; 13-Optical transmission component; 012-Optical receiving component; 013-Standard multimode fiber; 100-Optical component; 110-Laser; 120-First optical waveguide; 121-First end; 122-Second end; g1-First multimode signal light; g2-Second multimode signal light; 123-Core layer; 124-Cladding; 170-Second optical waveguide; 171-Third end; 172-Fourth end; 201-Housing; 202-Optical interface; 130-Optical coupling element; 140-Standard multimode fiber; 150-Multimode fiber; 160-Receiver; 180-Filter; g3-Reflected light. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0048] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0049] Furthermore, in the embodiments of this application, directional terms such as "up," "down," "left," "right," "horizontal," and "vertical" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0050] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, an electrical connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0051] Figure 1a This is a schematic diagram of the structure of an optical communication network 10. Please refer to [link / reference]. Figure 1a The optical communication network 10 includes at least two types of communication devices, such as Figure 1a The first communication device 11 and the second communication device 12 are interconnected.

[0052] For example, the first communication device 11 can be a switch. The second communication device 12 can be, for example, a computing card. Figure 1a In the example, the optical communication network 10 includes a Layer 3 switch. The Layer 3 switches are interconnected using a step-by-step convergence networking method. This application embodiment does not limit the application scenarios of the optical communication network 10. For example, the optical communication network 10 can be used for general-purpose computing.

[0053] Figure 1b This is a schematic diagram of another type of optical communication network 10. Figure 1b and Figure 1a The differences include: the three-layer first communication devices 11 are interconnected using a non-convergent networking method. For example, Figure 1b Optical communication networks 10 can be used for artificial intelligence. AI involves developing and implementing algorithms and systems aimed at simulating human thought and behavior. Examples include various neural network models and large language models. To enable neural network models to simulate human thought and behavior, they often need to be trained.

[0054] The aforementioned model training refers to the process of training a neural network model using a large amount of training data, so that the trained neural network can perform tasks such as prediction, classification, or regression on new input data.

[0055] This application does not limit the rate of the optical signal transmitted in the optical communication network 10. For example, the optical signal transmitted in the optical communication network 10 is greater than or equal to 50 Gbps (gigabits per second), such as the optical communication network 10 being used to transmit optical signals at rates of 56 Gbps or even higher.

[0056] Figure 1a and Figure 1b In this communication, the first communication device 11 transmits optical signals to the second communication device 12 via the optical component 100. In other words, the first communication device 11 includes the optical component 100, which can be considered part or all of the transmit (TX) module of the first communication device 11. For example, the first communication device 11 includes the optical component 100 and a processor, the processor being used to send electrical signals to the optical component 100. The optical component 100 is used to convert the electrical signals into optical signals and then transmit them.

[0057] For example, the processor is used to direct the laser 110 of the light assembly 100 (see Figure 2a The laser 110 is used to transmit an electrical signal. The laser 110 is used to convert the electrical signal into a first multimode signal light g1 (see...). Figure 2a ).

[0058] For example, the processor supports the implementation of media access control (MAC) and optical physical layer (PHY) functions. In some cases, both the MAC and the optical PHY are integrated into the processor. In other cases, the MAC and the optical PHY are located on different processor cores. The functions implemented by the processor are described in detail below using the MAC and optical PHY as examples: In the transmission direction, the MAC can control laser 110 (see [link to MAC]) via the transmit enable port (Tx_En, also known as the switch pin). Figure 2aThe MAC controls the laser 110 to turn on and off. For example, if the laser is currently in the emission time slot (or occupied time slot) of the first communication device 11, the MAC controls the laser 110 to turn on via the transmit enable port; if it is not in the emission time slot of the first communication device 11, the MAC controls the laser 110 to turn off via the transmit enable port. The MAC can also adjust the physical parameters of the laser 110, such as the laser bias current and modulation current, via the transmit control port (Tx_Ctr). The MAC can send service data to the optical PHY via the data port (Data), and the optical PHY transmits the service data transparently. The optical PHY, also known as the driver of the laser 110, is used to drive the laser to generate optical signals according to the instructions of the MAC transmit enable port and / or transmit control port. Under the control of the optical PHY, the laser 110 modulates the service data into the optical signal and sends the uplink optical signal carrying the service data to the first communication device 11 via optical fiber.

[0059] For example, the processor can be a central processing unit (CPU), a data processing unit (DPU), or an embedded neural network process unit (NPU), etc.

[0060] This application does not limit the connection method between the optical component 100 and other components of the first communication device 11. In some embodiments, the optical component 100 and the housing of the first communication device 11 are detachably connected. The optical component 100 can be considered as part of the optical module of the first communication device 11. The optical component 100 is pluggably disposed on the housing of the first communication device 11. In some embodiments, the optical component 100 and the housing of the first communication device 11 are non-detachably connected; for example, the optical component 100 is integrated inside the housing of the first communication device 11.

[0061] For example, the optical communication network 10 further includes an optical transmission component 13, which is used to transmit the optical signal emitted by the optical component 100 and transmit the optical signal to the second communication device 12.

[0062] The embodiments of this application do not limit the structure of the optical transmission component 13. For example, the optical transmission component 13 may include standard multimode optical fiber, optical fiber connector, etc.

[0063] This application does not limit the type of standard multimode fiber. For example, the multimode fiber can be OM1, OM2, OM3, OM4, or OM5 multimode fiber. The aforementioned OM stands for Multimode Fiber (MMF). It is understood that with the advancement of optical communication, the standard multimode fiber can also be other standard multimode fibers, not limited to the aforementioned OM1, OM2, OM3, OM4, and OM5. For example, it could be a multimode fiber from other newly promulgated multimode fiber standard levels.

[0064] In some embodiments, the optical component 100 may further include part or all of the receive (RX) module of the first communication device 11, for receiving optical signals transmitted from the second communication device 12 to the first communication device 11. In other words, the optical component 100 can be regarded as part or all of the optical transceiver module of the first communication device 11.

[0065] In some embodiments, the receiving module and optical component 100 of the first communication device 11 can be set up independently.

[0066] Similarly, the second communication device 12 transmits optical signals to the first communication device 11 via the optical component 100. The second communication device 12 may also include the optical component 100.

[0067] If the optical transmission component 13 has problems such as dirt, loose connection, or end face damage, the optical transmission component 13 will reflect the signal light. The reflected signal light will be transmitted back to the optical component 100, which will cause the laser in the optical component 100 to be unstable, resulting in noise such as mode partition noise (MPN), reducing the signal-to-noise ratio, affecting the link error rate performance, and even causing the link to drop.

[0068] In some embodiments, the optical communication network 10 may further include fiber optic connectors that connect two adjacent fiber optic segments. The reflected signal light from the fiber optic connectors may also cause related problems.

[0069] It is understood that, in the embodiments of this application, the optical communication network 10 is not limited to... Figure 1a and Figure 1b The network shown.

[0070] Figure 1c This is a schematic diagram of the structure of another type of optical communication network 10. Figure 1c In the example, the optical communication network 10 includes: an optical receiver 012, a standard multimode fiber 013, and an optical component 100, wherein the standard multimode fiber 013 is used to transmit the light beam from the optical component 100 to the optical receiver 012. Figure 1cIn the example, if the standard multimode fiber 013 has problems such as dirt, loose connection, or end face damage, it will cause the laser in the optical component 100 to be unstable, resulting in mode allocation noise, reducing the signal-to-noise ratio, affecting the link bit error rate performance, and even causing the link to drop.

[0071] The optical component 100 provided in this application embodiment can reduce the impact of reflected signal light in the link on the optical component 100 and improve the communication quality of the optical communication network 10.

[0072] Figure 2a This is a schematic diagram of the structure of an optical component 100 provided in an embodiment of this application. Please refer to... Figure 2a The optical component 100 includes a laser 110 and a first optical waveguide 120. The first optical waveguide 120 includes a first end 121 and a second end 122 disposed opposite to each other. The laser 110 is used to output a first multimode signal light g1. The first end 121 is used to receive the first multimode signal light g1, and the second end 122 is used to output a beam of light from the first end 121.

[0073] In other words, the first end 121 is closer to the laser 110 than the second end 122. The first optical waveguide 120 is used to transmit the first multimode signal light g1 from the laser 110. The first optical waveguide 120 is a transmission optical waveguide used to transmit the first multimode signal light g1 from the first end 121 to the second end 122.

[0074] The core layer 123 of the first end 121 has a diameter of 15 μm to 45 μm and a numerical aperture (NA) of 0.1 to 0.25.

[0075] Thus, the first multimode signal light g1 output by laser 110 can be coupled into the core layer 123 of the first end 121. When the beam output from the second end 122 is reflected in the optical link, the mode of the beam may change during the reflection process, increasing the number of modes in the beam. For example, the reflected beam may include both higher-order and lower-order modes. The core layer 123 of the first end 121 has a small diameter, less than 50 μm. The core layer 123 of the first end 121 allows fewer modes of the beam to be coupled out. Some modes of the reflected beam are intercepted by the core layer 123 of the first end 121 and cannot be coupled out from the first end 121. This prevents the aforementioned higher-order mode light from entering laser 110, reducing the noise entering laser 110. For example, the core layer 123 of the first end 121 intercepts the higher-order mode light in the reflected beam, reducing noise, improving the reliability of laser 110 and optical component 100, and mitigating the problem of optical link flicker.

[0076] In some embodiments, the core layer 123 of the first optical waveguide 120 is an integrally formed part. The core layer 123 of the second end 122 refers to the core layer 123 of the first optical waveguide 120 at the second end 122, and the core layer 123 of the first end 121 is similarly defined.

[0077] In some embodiments, the diameter of the core layer 123 of the first end 121 is 20μm-35μm, and the numerical aperture of the first end 121 is 0.15-0.22. This facilitates the coupling of the first multimode signal light g1 into the core layer 123 of the first end 121. It also enhances the interception effect of the first end 121 on higher-order mode light in the reflected beam. In some embodiments, the diameter of the core layer 123 of the first end 121 is 28μm-32μm, and the numerical aperture of the first end 121 is 0.20-0.22. In this way, the core layer 123 of the first end 121 allows the first multimode signal light g1 to couple in, and the coupling efficiency between the core layer 123 of the first end 121 and the first multimode signal light g1 output by the laser 110 is high, with almost no filtering of the first multimode signal light g1. Furthermore, the core layer 123 of the first end 121 can further enhance the interception effect of the core layer 123 of the first end 121 on the reflected beam and reduce the noise of the laser 110.

[0078] For example, the diameter of the core layer 123 at the first end 121 can be 15μm, 16μm, 18μm, 20μm, 22μm, 23μm, 25μm, 28μm, 30μm, 32μm, 35μm, 38μm, 39μm, 40μm, 41μm, 43μm, or 45μm. For example, the numerical aperture of the first end 121 can be 0.1, 0.11, 0.12, 0.14, 0.15, 0.16, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, or 0.25, etc.

[0079] In some embodiments of this application, the second end 122 is also used to connect to a standard multimode optical fiber. As mentioned above, OM1, OM2, OM3, OM4, or OM5 are all standard multimode optical fibers. The second end 122 can be connected to any one of OM1, OM2, OM3, OM4, or OM5. In this way, the standard multimode optical fiber is used for signal transmission over a longer distance, and the first multimode signal light g1 output from the second end 122 can be transmitted over a greater distance. The optical component 100 can be used in high-speed or ultra-high-speed Ethernet or broadband services.

[0080] OM1 fiber can be used for short-distance data transmission and can be used in Ethernet and broadband services.

[0081] OM2 fiber offers higher bandwidth and lower attenuation, resulting in greater efficiency for long-distance data transmission. It can be used in Ethernet and broadband services.

[0082] OM3 fiber offers high efficiency and excellent transmission performance for long-distance data transmission. It can be used in high-speed Ethernet and broadband services.

[0083] OM4 fiber offers high bandwidth and low attenuation, making it suitable for use in ultra-high-speed Ethernet and broadband services.

[0084] OM5 fiber offers higher bandwidth and lower attenuation, making it suitable for use in ultra-high-speed Ethernet and broadband services.

[0085] Similarly, the second end 122 can be connected to other standard multimode fibers. For example, the second end 122 can be connected to multimode fibers in other newly promulgated multimode fiber standard grades.

[0086] This application does not limit the type of the first optical waveguide 120. In some embodiments, the first optical waveguide 120 can be an integrated optical waveguide, which can be a planar (thin film) dielectric waveguide or a strip dielectric waveguide. In some embodiments, the first optical waveguide 120 can be a cylindrical optical waveguide, which can also be called an optical fiber.

[0087] The first optical waveguide 120 includes a core layer 123 and a cladding layer 124. The core layer 123 is the portion of the first optical waveguide 120 with a higher refractive index, and the cladding layer 124 is the portion of the first optical waveguide 120 with a lower refractive index. The cladding layer 124 covers the outer peripheral surface of the core layer 123. The refractive index of the core layer 123 is greater than that of the cladding layer 124. The cladding layer 124 encloses the optical signal within the core layer 123 for transmission, and also serves to protect the core layer 123.

[0088] The materials of the core layer 123 and the cladding layer 124 are not limited in this application embodiment. Exemplarily, in some embodiments, the material of the core layer 123 is silicon dioxide (SiO2), and the cladding layer 124 is doped silicon dioxide (SiO2), and the doping element can be, for example, pentavalent elements such as nitrogen and phosphorus.

[0089] In some embodiments, the core layer 123 may be made of silicon dioxide, doped silicon dioxide, polycarbonate, polymethyl methacrylate, polyacrylate copolymer, fluorinated olefin polymer, or fluorinated methyl methacrylate, etc. The cladding layer 124 may be made of silicon dioxide, doped silicon dioxide, fluorinated olefin polymer, fluorinated methyl methacrylate, polycarbonate, polymethyl methacrylate, or polyacrylate copolymer, etc.

[0090] In some embodiments, the first optical waveguide 120 may further include a coating layer covering the outer peripheral surface of the cladding 124. In some embodiments, the first optical waveguide 120 may not have a coating layer.

[0091] Figure 2bThis is a schematic diagram of the optical path between laser 110 and the first optical waveguide 120. Please refer to [link / reference needed]. Figure 2b The first multimode signal light g1 emitted from laser 110 has a small divergence angle, allowing it to be well coupled into the core layer 123 of the first end 121. After being reflected by a reflection point in the optical link, the first multimode signal light g1 forms reflected light g3, with the propagation direction of reflected light g3 opposite to that of the first multimode signal light g1. During reflection, the number of modes in the first multimode signal light g1 increases, resulting in an increase in the number of modes in the reflected beam (reflected light g3), including both higher-order and lower-order modes. Due to the small diameter and numerical aperture of the core layer 123 of the first end 121, a portion of the reflected light g3 transmitted to the core layer 123 is intercepted by the first end 121, particularly the higher-order modes, which cannot be coupled out from the first end 121 to laser 110. This can also be viewed as the first end 121 filtering out the higher-order modes of the signal light reflected back from the optical link. This prevents the portion of light transmitted to the laser 110 from becoming noise in the laser 110. This helps improve the reliability of the laser 110 and the optical assembly 100.

[0092] This application does not limit the type of laser 110. For example, laser 110 can be a vertical cavity surface emitting laser (VCSEL). In some embodiments, laser 110 is a multimode VCSEL, a few-mode VCSEL, a single-mode directly modulated laser, or a single-mode externally modulated laser.

[0093] For example, a modulated signal from the processor is transmitted to an electrical chip, which drives the laser 110 to output a first multimode signal light g1. The aforementioned electrical chip can be, for example, an optical digital signal processing (oDSP) chip for a driver.

[0094] In the embodiments of this application, the number of first optical waveguides 120 can be one, two, three or more, depending on the number of channels in the optical component 100. This application embodiment uses one first optical waveguide 120 in the optical component 100 as an example for illustration.

[0095] In some embodiments of this application, the rate of the first multimode signal light g1 output by the laser 110 is greater than or equal to 50 Gbps. In some embodiments, the rate of the first multimode signal light g1 output by the laser 110 is greater than or equal to 100 Gbps. Thus, the optical component 100 can be used in high-speed interconnect scenarios in data centers. For example, the optical component 100 can be used in VCSEL-based 400G short-reach (SR) 8, 800G SR8, 1.6T SR8 optical modules, etc. For example, the rate of the first multimode signal light g1 is 50 Gbps, 56 Gbps, 80 Gbps, 85 Gbps, 100 Gbps, 120 Gbps, 150 Gbps, or 200 Gbps, etc.

[0096] Please return Figure 2a In some embodiments of this application, the power ratio of the beam output from the second end 122 to the power of the first multimode signal light g1 output from the laser 110 is greater than or equal to 80%. Thus, during the transmission of the first multimode signal light g1 from the laser 110 to the second end 122, the power loss is low, and the loss of the first multimode signal light g1 by the first optical waveguide 120 is minimal. In some embodiments, the power ratio of the beam output from the second end 122 to the power of the first multimode signal light g1 output from the laser 110 is greater than or equal to 95%. Thus, the loss of the first multimode signal light g1 by the first optical waveguide 120 is further reduced.

[0097] In some embodiments of this application, the distance from the first end 121 of the first optical waveguide 120 to the laser 110 is less than or equal to 20 cm. This reduces the distance the reflected light, after being partially or completely intercepted by the first end 121 of the first optical waveguide 120, travels to the laser 110, thereby reducing the introduction of other noise between the first end 121 of the first optical waveguide 120 and the laser 110, and lowering the noise transmitted to the laser 110. In some embodiments, the distance from the first end 121 of the first optical waveguide 120 to the laser 110 is 5 cm to 15 cm. This shorter distance results in a shorter light transmission path, and the first end 121 has a better filtering effect on noise entering the laser 110. This is beneficial for improving the performance of the laser 110.

[0098] For example, the distance from the first end 121 of the first optical waveguide 120 to the laser 110 is 1cm, 2cm, 4cm, 5cm, 8cm, 10cm, 12cm, 13cm, 15cm, 18cm, 19cm or 20cm, etc.

[0099] In some embodiments of this application, if other optical devices are present between the first end 121 of the first optical waveguide 120 and the laser 110, the distance from the first end 121 of the first optical waveguide 120 to the laser 110 may not be within the above-mentioned range. For example, the distance from the first end 121 of the first optical waveguide 120 to the laser 110 may be greater than 20 cm.

[0100] In some embodiments of this application, the diameter of the core layer 123 of the second end 122 is larger than the diameter of the core layer 123 of the first end 121. Thus, the first multimode signal light g1 can be better coupled out in the core layer 123 of the second end 122, avoiding signal loss.

[0101] In some embodiments of this application, the diameter of the core layer 123 at the second end 122 may be less than or equal to the diameter of the core layer 123 at the first end 121.

[0102] In some embodiments, the ratio of the diameter of the core layer 123 at the second end 122 to the diameter of the core layer 123 at the first end 121 can be from 0.9 to 1.1. Thus, the first multimode signal light g1 can be transmitted within the core layer 123 of the first optical waveguide 120. For example, the diameter of the core layer 123 at the second end 122 can be 0.9 times, 0.92 times, 0.95 times, 0.98 times, 1.0 times, 1.02 times, 1.05 times, 1.08 times, or 1.1 times the diameter of the core layer 123 at the first end 121.

[0103] In some embodiments of this application, the diameter of the core layer 123 of the second end 122 is 45μm-55μm. In scenarios where the second end 122 is connected to a standard multimode fiber, the diameter of the core layer 123 of the second end 122 is close to the diameter of the core layer of the multimode fiber. This results in better coupling performance between the core layer 123 of the second end 122 and the core layer of the standard multimode fiber. In some embodiments of this application, the diameter of the core layer 123 of the second end 122 is 48μm-52μm. This further improves the coupling efficiency between the second end 122 and the standard multimode fiber.

[0104] For example, the diameter of the core layer 123 at the second end 122 is 45μm, 46μm, 47μm, 48μm, 49μm, 50μm, 51μm, 52μm, 53μm, 54μm or 55μm, etc.

[0105] In embodiments where the diameter of the core layer 123 at the second end 122 is larger than the diameter of the core layer 123 at the first end 121, the size of the core layer 123 of the first optical waveguide 120 can be configured in various ways.

[0106] In some embodiments, the diameter of the core layer 123 of the first optical waveguide 120 gradually increases from the first end 121 to the second end 122. Thus, the core layer 123 of the first optical waveguide 120 changes in a gradual manner. During the formation of the core layer 123 of the first optical waveguide 120, processes such as drawing can be used to prepare the core layer 123, which are simple and inexpensive. For example, using the core layer of a multimode optical fiber as raw material and forming the core layer 123 of the first optical waveguide 120 using a thermally fused taper method can reduce the fabrication cost of the first optical waveguide 120.

[0107] In some embodiments, the core layer 123 of the first optical waveguide 120 increases in a gradient manner from the first end 121 to the second end 122. For example, from the first end 121 to the second end 122, the core layer 123 of the first optical waveguide 120 includes a first segment, a second segment, a third segment, etc., arranged sequentially. The diameter of the first segment is uniformly the same as the size of the core layer 123 at the first end 121. The diameter of the second segment is uniformly larger than the diameter of the first segment. The diameter of the third segment is uniformly larger than the diameter of the second segment, and so on.

[0108] Alternatively, in some embodiments, the diameter of the core layer 123 of the first optical waveguide 120 changes from the first end 121 to the second end 122 in the following trend: first gradually increasing, then increasing in a gradient; or first increasing in a gradient, then gradually increasing.

[0109] In some embodiments of this application, the numerical aperture of the second end 122 is larger than the numerical aperture of the first end 121. This is beneficial for improving the interaction between the second end 122 and other devices (e.g., Figure 1a The coupling efficiency of the optical transmission component 13 in the first optical waveguide 120 can be improved. In addition, the interception effect of the core layer 123 of the first optical waveguide 120 on the reflected light beam can be further improved.

[0110] In some embodiments of this application, the numerical aperture of the second end 122 is 0.15-0.25. Thus, the numerical aperture of the second end 122 is close to that of the standard multimode fiber. In embodiments where the second end 122 is connected to the standard multimode fiber, the light beam from the first end 121 can be better coupled out from the second end 122, reducing signal loss. In some embodiments, the numerical aperture of the second end 122 is 0.18-0.22. The numerical aperture of the second end 122 is even closer to that of the standard multimode fiber, resulting in higher coupling efficiency between the second end 122 and the standard multimode fiber.

[0111] For example, the numerical aperture of the second end 122 can be 0.15, 0.16, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23 or 0.25, etc.

[0112] This application does not limit the outer diameter of the second end 122 in its embodiments. Exemplarily, the outer diameter of the second end 122 is 120μm-130μm. In some embodiments, the outer diameter of the second end 122 is 120μm-128μm. Thus, in scenarios where the second end 122 is connected to a standard multimode fiber, the outer diameter of the second end 122 is close to that of the standard multimode fiber. The second end 122 and the standard multimode fiber can be connected using a standard multimode fiber connector. There is no need to customize connectors of other sizes for the second end 122, increasing its adaptability. This helps reduce the manufacturing and assembly costs of the optical link.

[0113] The outer diameter of the aforementioned second end 122 refers to the diameter of the outer peripheral surface of the second end 122. In embodiments where the outer peripheral surface of the second end 122 is a cladding 124, the outer diameter of the second end 122 is the outer diameter of the cladding 124 of the second end 122. In embodiments where the outer periphery of the second end 122 is a coating layer or other structure, the outer diameter of the second end 122 is the outer diameter of the coating layer or other structure.

[0114] In some embodiments, the outer diameter of the second end 122 is 123μm-126μm. In this way, the outer diameter of the second end 122 is closer to the outer diameter of the standard multimode fiber, which can reduce the assembly error between the second end 122 and the standard multimode fiber.

[0115] For example, the outer diameter of the second end 122 can be 120μm, 121μm, 123μm, 124μm, 125μm, 126μm, 127μm, 128μm or 130μm, etc.

[0116] In some embodiments of this application, the outer diameter of the second end 122 can be other values, which can be set according to requirements. The outer diameter of the second end 122 can differ significantly from the outer diameter of the multimode optical fiber.

[0117] In this embodiment, the outer diameter of the cladding 124 at the first end 121 is not limited. The outer diameter of the cladding 124 at the first end 121 can be equal to the outer diameter of the cladding 124 at the second end 122. Alternatively, the outer diameter of the cladding 124 at the first end 121 can be less than or greater than the outer diameter of the cladding 124 at the second end 122.

[0118] Figure 2a In this example, the light component 100 also includes a housing 201. To illustrate a portion of the internal structure of the housing 201, Figure 2aOnly a portion of the structure of housing 201 is shown in the illustration. Laser 110 is located within housing 201, as are the first end 121 and the second end 122. In other words, both the first optical waveguide 120 and the laser 110 are located within housing 201. The optical component 100 can be considered as part or all of an optical module used to transmit the first optical signal g1. The first optical waveguide 120 and the laser 110 are protected by housing 201, reducing contamination and improving the lifespan of the optical component 100. Furthermore, the outer peripheral surface of the first optical waveguide 120 does not require a protective cladding layer 124 such as a coating.

[0119] In addition, the housing 201 provides support for the second end 122, facilitating the connection and disconnection of the second end 122 with other optical devices.

[0120] In embodiments where the optical component 100 is part of or all of an optical module, the second end 122 is located inside the housing 201 and can be connected to the optical port of the optical module. The connection and disconnection of the optical component 100 and the multimode optical fiber can be achieved through pluggable connection of the multimode fiber and the optical port.

[0121] As mentioned above Figure 1a The optical component 100 can be detachably connected to the housing of the first communication device 11, or the optical component 100 can be fixedly connected to the housing of the first communication device 11.

[0122] In the optical component 100 and the first communication device 11 (such as...) Figure 1a In the embodiment shown, where the housing is detachably connected, the optical component 100 can be regarded as the optical module in the first communication device 11, and the housing 201 can be regarded as the housing 201 of the optical module.

[0123] In an embodiment where the optical component 100 is fixedly connected to the housing of the first communication device 11, the housing 201 of the optical component 100 and the housing of the first communication device 11 can be the same component. In other words, the housing 201 of the optical component 100 is the housing of the first communication device 11.

[0124] As mentioned above Figure 1a In some embodiments, the optical component 100 may further include a receiving module of the first communication device 11. In these embodiments, the optical component 100 may be considered as part or all of the optical transceiver of the first communication device 11.

[0125] Figure 3 This is a schematic diagram of the structure of another optical component 100 provided in an embodiment of this application. Figure 3 and Figure 2aThe differences include: In some embodiments of this application, the optical component 100 may further include a receiver 160, which is used to receive signals from the second communication device 12 (e.g., Figure 1a The signal (as described above). Thus, the optical component 100 serves the dual function of emitting and receiving signal light.

[0126] For example, the second optical waveguide 170 includes a third end 171 and a fourth end 172 disposed opposite to each other. The third end 171 is used to receive the second multimode signal light g2, and the fourth end 172 is used to output the second multimode signal light g2 from the third end 171. The receiver 160 is used to receive the second multimode signal light g2 from the fourth end 172.

[0127] In some embodiments, the structure of the second optical waveguide 170 is the same as that of the first optical waveguide 120. The diameter of the core layer of the fourth end 172 is 10μm-45μm, and the numerical aperture of the fourth end 172 is 0.1-0.25. Thus, both the numerical aperture of the fourth end 172 and the diameter of the core layer are relatively small, which can intercept part of the beam of the mode and reduce the impact of mode dispersion on the bandwidth. Exemplarily, the diameter of the core layer of the fourth end 172 can be 15μm, 16μm, 18μm, 20μm, 22μm, 23μm, 25μm, 28μm, 30μm, 32μm, 35μm, 38μm, 39μm, 40μm, 41μm, 43μm, or 45μm. For example, the numerical aperture of the fourth end 172 can be 0.1, 0.11, 0.12, 0.14, 0.15, 0.16, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23 or 0.25, etc.

[0128] The structure and dimensions of the fourth end 172 are described in the previous description of the first end 121, and the structure and dimensions of the third end 171 are described in the previous description of the second end 122, and will not be repeated here.

[0129] In embodiments where the optical component 100 includes a housing 201, similar to the aforementioned second end 122, in some embodiments, the third end 171 is located inside the housing 201. In some embodiments, the third end 171 is located outside the housing 201.

[0130] In some embodiments of this application, the second optical waveguide 170 can be a multimode optical fiber. For example, the second optical waveguide 170 can be a standard multimode optical fiber.

[0131] In an example where the optical component 100 is not used to receive signals, the optical component 100 may not have a receiver 160 and a second optical waveguide 170.

[0132] In some embodiments of this application, the second end 122 may be located outside the housing 201.

[0133] Figure 4 This is a schematic diagram of another optical component 100 provided in an embodiment of this application. Please refer to... Figure 4 , Figure 4 and Figure 3 The difference includes that the second end 122 is located outside the housing 201. Thus, the size of the second end 122 is not limited by the size of the housing 201. For example, the length of the first optical waveguide 120 can be ten times or more the size of the housing 201.

[0134] exist Figure 4 In the example, the optical component 100 may further include an optical interface 202, which is disposed outside the housing 201 and connected to a second end 122. The second end 122 can be connected to a multimode optical fiber via the optical interface 202. The optical interface 202 may be, for example, a flange interface.

[0135] In scenarios where the second end 122 is used for connection with standard multimode fiber, the optical interface 202 is the optical interface of standard multimode fiber.

[0136] In some embodiments, the optical component 100 may not be configured with the optical interface 202. For example, the second end 122 can be connected to a multimode fiber via an optical distribution frame (ODF).

[0137] Similarly, Figure 4 In the middle, the third end 171 of the second optical waveguide 170 is also located outside the housing 201. The third end 171 can also be configured with an optical interface.

[0138] Figure 4 and Figure 3 The difference also includes that the optical component 100 may further include an optical coupling element 130. The optical coupling element 130 is disposed in the optical path between the laser 110 and the first optical waveguide 120. The optical coupling element 130 is used to receive the first multimode signal light g1, and the first end 121 is used to receive the beam from the optical coupling element 130. The diameter of the light spot transmitted from the optical coupling element 130 to the first end 121 is smaller than the diameter of the core layer 123 of the first end 121. Thus, the optical coupling element 130 couples the first multimode signal light g1 into the first end 121. Furthermore, the coupling efficiency of the first multimode signal light g1 into the core layer 123 of the first end 121 is high, and the signal loss is low.

[0139] In some embodiments of this application, the optical coupling element 130 has a focusing function for focusing the first multimode signal light g1 output by the laser 110. For example, the optical coupling element 130 includes a focusing element for focusing the light beam.

[0140] In some embodiments of this application, the optical coupling element 130 may include a reflective optical element for changing the transmission direction of the first multimode signal light g1, thereby increasing the integration density of the optical component 100 and reducing its size. In some examples, the reflective optical element and the focusing optical element are connected as a single molded component.

[0141] In some embodiments of this application, the optical coupling element 130 may be a photonic wirebonding. Exemplarily, the photonic wirebonding may include a core layer and a cladding layer surrounding the outer periphery of the core layer. The diameter of the core layer of the photonic wirebonding may be 5 μm-30 μm, for example, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, or 30 μm.

[0142] In some embodiments, the optical assembly 100 may include other optical waveguides besides the first optical waveguide 120. In some embodiments, the first optical waveguide 120 is the transmission optical waveguide closest to the optical coupling element 130. In other words, compared to the other transmission optical waveguides in the optical assembly 100, the distance from the first optical waveguide 120 to the optical coupling element 130 is the smallest, and the aforementioned distance is the distance in the optical path. Thus, compared to the first optical waveguide 120 and the optical coupling element 130 having other transmission optical waveguides, the first end 121 of the first optical waveguide 120, which is closest to the optical coupling element 130, intercepts higher-order mode light rays, resulting in better noise interception for the laser 110. It also avoids the introduction of higher-order mode beams and noise by other transmission optical waveguides between the optical coupling element 130 and the first end 121.

[0143] The aforementioned "transmission optical waveguide" refers to an optical waveguide used for transmitting light beams. It is distinct from optical waveguides used for beam shaping or wavelength division multiplexing.

[0144] In some embodiments of this application, the optical component 100 may include only one transmission optical waveguide, namely the first optical waveguide 120. In some embodiments of this application, the optical component 100 may include one, two, three or more optical waveguides.

[0145] Understandable Figure 3 Some examples may also include the aforementioned optical coupling element 130.

[0146] Figure 4 For the remaining structures, please refer to the foregoing. Figure 3 The description in the text will not be repeated here.

[0147] Figure 5 This is a schematic diagram of the structure of another optical component 100 provided in an embodiment of this application. Figure 5In this example, the optical component 100 also includes a standard multimode fiber 140. The standard multimode fiber 140 is used to transmit the light beam from the second end 122. Thus, the optical component 100 can be used for both short-distance and long-distance data transmission.

[0148] For example, the second end 122 is connected to a standard multimode fiber 140. This connection can be made, for example, via a fiber optic connector.

[0149] For example, the standard multimode fiber 140 can be OM1, OM2, OM3, OM4 or OM5 fiber.

[0150] In an embodiment where the optical component 100 includes a housing 201 and the second end 122 is located within the housing 201, the end of the standard multimode fiber 140 near the second end 122 may be located inside the housing 201. Alternatively, the end of the standard multimode fiber 140 near the second end 122 may be located outside the housing 201; this embodiment does not impose any limitations on this.

[0151] In some embodiments of this application, the optical path between the laser 110 and the first end 121 may also include a multimode fiber.

[0152] Figure 5 In this example, the optical component 100 also includes a multimode fiber 150. The multimode fiber 150 is located in the optical path between the laser 110 and the first end 121. The multimode fiber 150 is used to transmit the first multimode signal light g1 output by the laser 110, and the first end 121 is used to receive the beam from the multimode fiber 150. For example, the first optical waveguide 120 and the multimode fiber 150 can be connected via a fiber optic connector.

[0153] The first end 121 can intercept higher-order modes of light, reducing the noise of the first optical waveguide 120, which is then transmitted to the laser 110 via the multimode fiber 150. This also improves the stability of the laser 110.

[0154] In the embodiments of this application, the multimode fiber 150 can be OM1, OM2, OM3, OM4 or OM5 fiber.

[0155] In an embodiment where the second end 122 of the first optical waveguide 120 is located within the housing 201, the entire multimode fiber 150 may be located entirely within the housing 201. Alternatively, one end of the multimode fiber 150 may be located within the housing 201, and the other end may be located outside the housing 201.

[0156] It is understandable that neither standard multimode fiber 140 nor multimode fiber 150 is necessary. Optical component 100 may not include standard multimode fiber 140, or optical component 100 may not include multimode fiber 150.

[0157] Figure 5 For the remaining structures, please refer to Figure 4 and Figure 3 The description in the text will not be repeated here.

[0158] Figure 3 , Figure 4 and Figure 5 In the example, the light beam transmitted through the first optical waveguide 120 and the light beam transmitted through the second optical waveguide 170 do not share an optical path. In other words, the first multimode signal light g1 output by the optical component 100 and the second multimode signal light g2 received by the optical component 100 do not share an optical path.

[0159] In some embodiments of this application, the light beam transmitted by the first optical waveguide 120 and the light beam transmitted by the second optical waveguide 170 may share a portion of the optical path.

[0160] Figure 6 This is a schematic diagram of another optical component 100 provided in an embodiment of this application. Figure 6 and Figure 3 The differences include: optical component 100 may also include filter 180. Optical component 100 may not include second optical waveguide 170.

[0161] Figure 6 In this configuration, the second terminal 122 is also used to receive the second multimode signal light g2, and the first terminal 121 is also used to output the second multimode signal light g2. The filter 180 is used to transmit the second multimode signal light g2 from the first terminal 121 to the receiver 160. The filter 180 is also used to transmit the first multimode signal light g1 from the laser 110 to the first terminal 121.

[0162] Thus, filter 180 transmits the first multimode signal light g1 output from laser 110 to the first optical waveguide 120. Filter 180 is also used to transmit the second multimode signal light g2 output from the first optical waveguide 120 to receiver 160. In this way, the first multimode signal light g1 emitted by optical component 100 and the second multimode signal light g2 received by optical component 100 share the first optical waveguide 120. This can reduce the number of devices in optical component 100, and reduce the size and cost of optical component 100.

[0163] in addition, Figure 6 In the example, the first end 121 can intercept higher-order mode beams, preventing them from being transmitted to the laser 110 via the filter 180. This helps reduce the noise of the laser 110, improve its stability, and enhance the performance of the optical component 100.

[0164] Figure 6 For the remaining structures, please refer to the foregoing. Figure 3 The description in the text.

[0165] In some embodiments of this application, the second multimode signal light g2 output by the filter 180 may not pass through the first optical waveguide 120.

[0166] Figure 7 This is a schematic diagram of the structure of an optical component 100 including a filter 180, provided for an embodiment of this application. Figure 7 and Figure 6 The differences include the different positions of filter 180 in the optical path.

[0167] Figure 7 In the example, receiver 160 is used to receive the second multimode signal light g2 from filter 180. Filter 180 is also used to transmit the first multimode signal light g1 from the second end 122 of the first optical waveguide 120.

[0168] Thus, the distance between the first end 121 of the first optical waveguide 120 and the laser 110 is smaller, which can reduce the noise introduced between the first end 121 and the laser 110 and improve the stability of the laser 110.

[0169] Understandably, the aforementioned Figure 4 , Figure 5 The optical component 100 in the middle may also include Figure 6 or Figure 7 The filter 180 shown is shown.

[0170] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An optical component, characterized in that, The optical component includes: A laser, used to output the first multimode signal light; and The first optical waveguide includes a first end and a second end disposed opposite to each other; the first end is used to receive the first multimode signal light, and the second end is used to output the light beam from the first end. The diameter of the core layer at the first end is 10μm-45μm, and the numerical aperture at the first end is 0.1-0.

25.

2. The optical component according to claim 1, characterized in that, The second end is also used to connect to a standard multimode fiber.

3. The optical component according to claim 1 or 2, characterized in that, The diameter of the core layer at the first end is 20μm-35μm, and the numerical aperture at the first end is 0.15-0.

22.

4. The optical component according to any one of claims 1-3, characterized in that, The diameter of the core layer at the second end is larger than the diameter of the core layer at the first end.

5. The optical component according to any one of claims 1-4, characterized in that, The numerical aperture of the second end is 0.15-0.

25.

6. The optical component according to any one of claims 1-5, characterized in that, From the first end to the second end, the diameter of the core layer of the first optical waveguide gradually increases.

7. The optical component according to any one of claims 1-6, characterized in that, The outer diameter of the second end is 120μm-130μm.

8. The optical component according to any one of claims 1-7, characterized in that, The optical component further includes: an optical coupling element; The optical coupling element is used to receive the first multimode signal light, and the first end is used to receive the light beam from the optical coupling element; Wherein, the diameter of the light spot transmitted to the first end by the optical coupling element is smaller than the diameter of the core layer of the first end.

9. The optical component according to claim 8, characterized in that, The first optical waveguide is the transmission optical waveguide closest to the optical coupling element.

10. The optical component according to any one of claims 1-9, characterized in that, The optical component further includes a standard multimode optical fiber; the standard multimode optical fiber is used to transmit a light beam from the second end.

11. The optical component according to any one of claims 1-10, characterized in that, The optical component further includes: a housing, the laser being located inside the housing, and the first end being located inside the housing; The second end is located inside the housing, or the second end is located outside the housing.

12. The optical component according to any one of claims 1-11, characterized in that, The rate of the first multimode signal light is greater than or equal to 50 Gbps.

13. The optical component according to any one of claims 1-12, characterized in that, The distance from the first end to the laser is less than or equal to 20cm.

14. The optical component according to any one of claims 1-13, characterized in that, The optical component also includes: a receiver and a filter; The second end is also used to receive the second multimode signal light, and the first end is also used to output the second multimode signal light; The filter is used to transmit the second multimode signal light from the first end to the receiver; The filter is also used to transmit the first multimode signal light from the laser to the first end.

15. The optical component according to any one of claims 1-13, characterized in that, The optical component further includes: a receiver and a second optical waveguide; The second optical waveguide includes a third end and a fourth end disposed opposite to each other; the third end is used to receive a second multimode signal light, and the fourth end is used to output the second multimode signal light from the third end; the receiver is used to receive the second multimode signal light from the fourth end. The diameter of the core layer at the fourth end is 10μm-45μm, and the numerical aperture of the fourth end is 0.1-0.

25.

16. The optical component according to any one of claims 1-15, characterized in that, The ratio of the power of the beam output from the second end to the power of the first multimode signal light output by the laser is greater than or equal to 80%.

17. A communication device, characterized in that, The communication device includes: a processor and an optical component according to any one of claims 1-16, wherein the processor is configured to send an electrical signal to the laser, and the laser is configured to convert the electrical signal into the first multimode signal light.

18. An optical communication network, characterized in that, The optical communication network includes: an optical receiving component, a standard multimode optical fiber, and an optical component according to any one of claims 1-16, wherein the standard multimode optical fiber is used to transmit the light beam emitted from the second end to the optical receiving component.

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