TOSA assembly with wide working interval

Abstract

The utility model relates to the technical field of photoelectric communication, in particular to a wide-working-interval TOSA (Transmitter Optical Sub-Assembly) assembly, which comprises a TO seat, a plurality of TOSs and a plurality of TOSs, the heat dissipation base is arranged in the center of the upper end of the TO seat; the laser chip is arranged at the upper part of the heat dissipation base; the backlight tube is arranged at the lower part of the heat dissipation base; the protective cover is arranged on the outer side of the heat dissipation base in a covering mode, and a lens is installed at the upper end of the protective cover; according to the utility model, the laser chip with special light emitting distribution direction and emission light intensity, the backlight detection tube with higher responsivity and the adjustment of element parameters are combined, so that the MPD current of the TOSA under the same light emitting intensity is larger, and the backlight current parameter improvement and convergence of the TOSA are realized, thereby enabling the TOSA to be matched with the driving chip, and improving the light emitting efficiency of the TOSA. Closed-loop stable work can be realized in a relatively large emission optical power range, so that one optical terminal product has compatibility of emission power requirements of multiple protocols at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of optoelectronic communication, in particular to a TOSA component with a wide working range. Background Art

[0002] The optical communication terminal products on the market are currently designed and produced according to the requirements of different protocols, and can only meet the requirements of different protocols such as GPON, EPON, AE, XGPON, and XGSPON. Products that meet a certain protocol cannot be applied to other protocols. Therefore, for operators and communication equipment manufacturers, different equipment must be used for different protocols. For operators and equipment manufacturers, there is an urgent need to find a way to reduce the cost of equipment investment.

[0003] There are some GPON and EPON compatible products, but the GPON and EPON protocols require that the optical interface parameters are very similar and easy to implement. However, there are still technical bottlenecks in the compatibility of XGPON, XGSPON, and GPON and AE. Equipment manufacturers can only produce them by setting the optical parameters to be close to the requirements of the compatible protocol. Such products have major bottlenecks in use and production. Utility Model Content

[0004] The utility model aims at the technical problems existing in the prior art and provides a TOSA component with a wide working range to solve the problem that optical terminal products cannot be compatible with the transmission powers required by different protocols at the same time.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A TOSA component with a wide operating range is provided, the TOSA component comprising:

[0007] TO seat;

[0008] A heat dissipation base installed in the center of the upper end of the TO seat;

[0009] A laser chip mounted on the upper portion of the heat dissipation base;

[0010] A backlight tube installed at the bottom of the heat dissipation base; and

[0011] The cover is a protective cover arranged on the outer side of the heat dissipation base, and a lens is installed on the upper end of the protective cover.

[0012] Furthermore, the laser chip has a bidirectional light-emitting characteristic. The light emitted by the laser chip toward the lens is forward light, and the light emitted toward the backlight tube is backward light. The ratio of the forward light to the backward light is 20:3.

[0013] Furthermore, the intensity range of the backward light is 0.9 mW to 1.5 mW.

[0014] Furthermore, the parameter of the backlight tube is 1.5A / W to compensate for the process accuracy error loss of the laser chip;

[0015] The current value of the backlight tube ranges from 600uA to 1500uA.

[0016] Furthermore, the distance and angle between the laser chip and the backlight tube can be adjusted to converge the response of the backward light to the backlight tube and avoid the current of the backlight tube being too large or too small.

[0017] The beneficial effects of the utility model are:

[0018] This utility model patent, by designing a laser chip with a special light distribution direction and emission light intensity, a backlight detection tube with higher responsiveness and adjusting component parameters, makes the MPD current of TOSA larger under the same light intensity, and realizes the improvement and convergence of TOSA's backlight current parameters. As a result, this TOSA, when combined with a driver chip, can achieve closed-loop stable operation within a larger emission light power range, thereby making an optical terminal product compatible with the emission power requirements of multiple protocols at the same time.

[0019] The utility model optimizes the overall photoelectric characteristics and response efficiency of the component by accurately selecting the laser chip and the backlight tube in the TOSA component and designing the adjustable distance and angle therebetween. In particular, by adjusting the distance and angle fine-tuning between the laser chip and the backlight tube, effective focusing of the backward light can be achieved, thereby allowing the backlight tube to work under a more precise current input, thereby ensuring the stability and efficiency of the photoelectric conversion process.

[0020] In addition, the current parameter adjustment range of the backlight tube is expanded, and its responsiveness is optimized to 1.5A / W, which not only improves the responsiveness, but also accurately controls the sensitivity of the backlight tube to the received light intensity, allowing the TOSA to maintain a stable working state under different optical power output requirements. This further enables the TOSA component to achieve stable closed-loop operation within a larger range of transmitted light power adjustment when used with the driver chip. The TOSA component of the utility model can efficiently support the power requirements under a variety of communication protocols, significantly improving the compatibility and adaptability of optical communication equipment. Therefore, the utility model not only optimizes the performance of optical terminal products, but also significantly expands its market application scope, supports communication standards of a variety of different protocols, and greatly improves the practicality and economic benefits of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. TO seat; 2. Heat dissipation base; 3. Laser chip; 4. Backlight tube; 5. Protective cover; 6. Lens. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use scenarios of other materials.

[0030] The utility model provides the following preferred embodiments:

[0031] Embodiment 1

[0032] refer to Figure 1 to Figure 2 As shown, this embodiment provides a TOSA component with a wide operating range, which includes several key components to achieve flexible application and stability in accordance with various optical communication protocols. A heat dissipation base 2 is installed at the top center of the TO seat 1. This structural design helps to improve the thermal stability of the device and ensure the stable light-emitting performance of the laser chip 3 under various working environments.

[0033] Furthermore, a laser chip 3 is installed on the upper part of the heat dissipation base 2. The chip has a bidirectional light emission characteristic, in which the backward light intensity is three times that of conventional products. Such a design helps to provide a larger backlight current range, thereby supporting compatibility between different protocols. At the same time, a backlight tube 4 is installed on the lower part of the heat dissipation base 2. The responsiveness of the backlight tube is increased to 1.5A / W to optimize the process accuracy error loss of the laser chip, promoting the technical and economic advantages of the TOSA component.

[0034] It should be understood that, in order to provide additional physical protection and optimize optical performance, the protective cover 5 is disposed on the outside of the heat dissipation base 2, and a lens 6 is installed on the upper end of the protective cover 5. The presence of the lens 6 not only protects the laser chip, but also optimizes the quality and direction of the emitted light, ensuring the effective transmission of the optical signal.

[0035] The TOSA component configured in this embodiment can achieve closed-loop stable operation within a wide range of transmit optical power, effectively meeting the transmit power requirements of multiple protocols, such as GPON, EPON, AE, XGPON, XGSPON, etc., thereby providing an economical and efficient solution for operators and equipment manufacturers. This design not only enhances the versatility of the component, but also reduces the cost of manufacturing and maintenance, and plays an important role in improving the quality and efficiency of network services.

[0036] Embodiment 2

[0037] According to a TOSA component with a wide operating range described in the above-mentioned embodiment, the component achieves efficient photoelectric conversion and stable output of emitted light through its structure and configuration. Further, this embodiment describes in detail the bidirectional light-emitting characteristics of the laser chip 3, wherein the light generated by the portion of the laser chip 3 facing the lens 6 is defined as forward light, and the light generated by the portion facing the backlight tube 4 is defined as backward light. This unique bidirectional light-emitting design keeps the ratio of forward light to backward light at 20 to 3, optimizes the efficiency of light utilization, and ensures that the intensity and stability of the optical signal meet the requirements of different communication protocols.

[0038] It can be understood that by adjusting the ratio of forward light to backward light, this embodiment not only enhances the transmission effect of the optical signal, but also optimizes the photoelectric response of the backlight tube 4 by enhancing the backward light, further improving the performance and reliability of the entire system. This light distribution strategy is essential to maintain the light output quality of the TOSA component under different operating conditions, especially in network facilities that require long-term stable operation.

[0039] Through the configuration of this embodiment, the TOSA component can provide stable light output under a wider range of operating temperatures and environmental conditions. This technical solution not only meets the needs of high-performance optical communication products, but also reduces the complexity of design and production, providing customers with a more cost-effective solution. By optimizing the transmission and reception of light sources, this embodiment significantly improves the performance of network equipment, helps promote the development of optical communication technology, and provides support for higher-speed and more efficient network communications in the future.

[0040] Embodiment 3

[0041] This embodiment further refines the output intensity of the backward light based on the bidirectional light emission characteristics of the laser chip 3, ensuring that the intensity of the backward light is maintained within the range of 0.9mW to 1.5mW. This characteristic is carefully designed based on the high requirements for the stability and efficiency of the communication system to ensure that the backward light can be effectively utilized and enhance the response performance of the backlight tube.

[0042] Furthermore, in order to achieve this light intensity range, a high-precision optical power control technology is used to finely adjust the power of the light emitted by the laser chip 3. It can be understood that by accurately controlling the backward light beam, not only the efficiency of the backlight tube 4 is improved, but also the consistent performance and long-term reliability of the overall component under different working environments are guaranteed. In addition, this precise power distribution is particularly important for meeting the strict requirements for optical signal intensity in specific application scenarios.

[0043] Through the optimization of the technology in this embodiment, the TOSA component demonstrates high adaptability and excellent performance in a wide range of applications. This not only ensures the overall quality and transmission effect of the signal, but also significantly improves the feedback adjustment capability and fault diagnosis efficiency of the system by accurately controlling the intensity of the backward light. The optimization of this technology in many aspects shows the potential to provide customers with more efficient, stable and cost-effective optical communication solutions.

[0044] Embodiment 4

[0045] According to the TOSA assembly with a wide operating range described in the above-described embodiment, the intensity of the backward light is controlled within a setting range of 0.9mW to 1.5mW. This embodiment further specifies the performance parameters of the backlight tube 4 in detail, and sets it to 1.5A / W to effectively compensate for the precision error and related losses that may occur in the production process of the laser chip 3. In addition, this embodiment also sets the current value of the backlight tube 4 between 600uA and 1500uA to ensure the best photoelectric response efficiency.

[0046] Furthermore, adjusting the responsivity parameter of the backlight tube to 1.5A / W not only optimizes the photoelectric conversion efficiency, but also helps to enhance the performance of the entire component in different working environments. It can be understood that this parameter setting enables the TOSA component to more stably compensate for any performance loss caused by the manufacturing error of the laser chip 3, thereby maintaining the overall optical signal quality and reliability of the communication system. Adjusting the range of the backlight tube current further ensures the stability and efficiency of the light source in long-term operation.

[0047] Common laser driver chips work in closed-loop control mode, and the backlight current required for stable operation of the emission light control circuit is above 100uA at room temperature, so the backlight current of common TOSA is 100uA to 1500uA. The backlight tube current range of the TOSA component of the utility model is 600uA to 1500uA, which overlaps with the range of conventional TOSA parameters and fully meets the backlight current range required for stable operation of the control circuit.

[0048] When our GPON (about 2mW) needs to be compatible with AE (about 0.5mW), the corresponding TOSA backlight tube current range is about 150uA ~ 375uA, which meets the range of conventional TOSA parameters and the control requirements of the driver chip, and the closed-loop circuit can work stably.

[0049] When our XGSPON (about 5mW) needs to be compatible with XGPON (about 2.5mW), the corresponding TOSA backlight tube current range is about 300uA ~ 750uA, which meets the range of conventional TOSA parameters and the control requirements of the driver chip, and the closed-loop circuit can also work stably.

[0050] Therefore, the selection and design of the TOSA component of the utility model can enable our conventional GPON products to stably operate in the transmission light parameter range required by the AE protocol, and also enable our conventional XGSPON products to stably operate in the transmission light parameter range required by the XGPON protocol.

[0051] In addition, through the technical strategy of this embodiment, the TOSA component can demonstrate excellent performance in a wider operating range, especially in the face of optical power fluctuations and equipment aging, ensuring the high adaptability and functional durability of the system. This careful design of backlight tube parameters and current enhances the market competitiveness of the product and provides users with an optical communication solution that is both efficient and reliable, especially suitable for demanding communication network environments.

[0052] Embodiment 5

[0053] According to the TOSA component with a wide working range described in the above-mentioned embodiment, the component optimizes the output intensity of the backward light and accurately controls the current and responsiveness of the backlight tube. This embodiment further improves the structural layout between the laser chip 3 and the backlight tube 4, so that the distance and angle between them can be adjusted as needed. Such adjustment is to more effectively guide the backward light to focus on the backlight tube 4, thereby optimizing the response efficiency of the backlight tube 4 and preventing the problem of excessive or insufficient current caused by improper responsiveness.

[0054] Furthermore, by adjusting the distance and angle between the laser chip and the backlight tube, the backward light path can be finely controlled, thereby enhancing the photoelectric conversion efficiency and stability of the entire TOSA component. It can be understood that through this structural optimization, the corresponding parameters can be adjusted under different usage conditions according to the actual light intensity and system requirements to ensure the quality of the optical signal and the correct response of the backlight tube. Such a design not only improves the adaptability of the component, but also helps to maintain the long-term stable operation of the entire system.

[0055] Through the improvement of this embodiment, the TOSA component can maintain efficient and accurate working performance under a wider range of operating conditions. This increase in adjustment capability is particularly suitable for high-end optical communication systems that require high dynamic range response, and effectively reduces performance problems caused by improper optical signal adjustment. This technical improvement not only improves component performance, but also significantly enhances the product's adaptability to complex and changing application environments, thereby providing users with a more reliable and efficient communication experience.

[0056] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A TOSA component with a wide operating range, characterized in that: The TOSA assembly includes: TO seat(1); A heat dissipation base (2) installed at the center of the upper end of the TO seat (1); A laser chip (3) mounted on the upper part of the heat dissipation base (2); a backlight tube (4) installed at the lower part of the heat dissipation base (2); and The protective cover (5) is arranged outside the heat dissipation base (2), and a lens (6) is installed on the upper end of the protective cover (5).

2. The TOSA assembly with a wide operating range as claimed in claim 1, characterized in that: The laser chip (3) has a bidirectional light-emitting characteristic; the light emitted by the laser chip (3) toward the lens (6) is forward light, and the light emitted toward the backlight tube (4) is backward light; the ratio of the forward light to the backward light is 20:

3.

3. The TOSA assembly with a wide operating range as claimed in claim 2, characterized in that: The intensity of the backward light ranges from 0.9 mW to 1.5 mW.

4. The TOSA assembly with a wide operating range as claimed in claim 3, characterized in that: The parameter of the backlight tube (4) is 1.5A / W to compensate for the process accuracy error loss of the laser chip (3); The current value of the backlight tube (4) ranges from 600uA to 1500uA.

5. The TOSA assembly with a wide operating range as claimed in claim 2, characterized in that: The distance and angle between the laser chip (3) and the backlight tube (4) can be adjusted to converge the response of the backward light to the backlight tube (4) and avoid the current of the backlight tube (4) being too large or too small.

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