Single-fiber tri-directional optical assembly

Abstract

The present application relates to a single-fiber tri-directional optical assembly, comprising a base, which has an inner cavity used for transmission of an optical signal, wherein the base has a first end portion and a second end portion arranged opposite each other and comprises, between the first end portion and the second end portion, at least a first side wall and a second side wall, the first side wall being arranged adjacent to the second side wall; a pigtail unit, which is arranged at the first end portion and is configured to receive an external optical signal; a first emission unit, which is arranged on the first side wall, a first optical signal emitted by the first emission unit being visible light having a preset wavelength, and the first optical signal being configured to be transmitted to the pigtail unit; a second emission unit, which is arranged at the second end portion, a second optical signal emitted by the second emission unit being configured to be transmitted to the pigtail unit; and a light-receiving unit, which is arranged on the second side wall, the light-receiving unit being configured to receive the external optical signal received by the pigtail unit. By means of the visible light in the first emission unit, the fault problem of an optical link can be detected within a short-distance transmission range, thereby reducing costs.

Description

Single-fiber triaxial optical components

[0001] This application claims priority to Chinese Patent Application No. 202410678774.3, filed on May 29, 2024, entitled "Single-fiber triaxial optical component", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of optical communication technology, and in particular to a single-fiber three-way optical component. Background Technology

[0003] With the development of access network technology, the concept of Fiber to the Home (FTTH) has been continuously deepened, technical solutions have become increasingly diverse, and it is gradually moving towards practical application. FTTH meets the high bandwidth requirements of integrated services such as data, voice, and cable television (CATV), but to popularize FTTH, access costs need to be reduced. Therefore, using single-fiber tri-directional transmission technology to achieve the transmission of these integrated services and reduce access costs has gradually become a mainstream approach in the development of FTTH technology.

[0004] The TRI-DIOSA (Tri-Diverter Submodule) integrates two technologies: the first is for cable television reception, and the second is for passive optical network (PON) reception and transmission, thus achieving a two-receive-one-transmit effect. With continuous technological innovation and development, the TRI-DIOSA has also evolved into a two-receive-one-transmit mode, transforming from a large-volume, multi-component, and highly coupled product into a monolithic integrated single-fiber TRI-DIOSA product with precise alignment of the optical waveguide and device, achieved through active layer mating growth.

[0005] Currently, with the promotion of fiber-to-the-home, single-fiber triaxial optical devices are widely used. However, when the optical link fails, manual disassembly and inspection are required, which increases maintenance costs and disassembly workload, making them inconvenient to use. Summary of the Invention

[0006] This application provides a single-fiber triaxial optical component that allows for optical link inspection and calibration without disassembly, reducing maintenance costs and workload, and improving the convenience of the single-fiber triaxial optical component.

[0007] This application provides a single-fiber triaxial optical component, including:

[0008] A base having an inner cavity for transmitting optical signals, the base having a first end and a second end disposed opposite to each other, located between the first end and the second end, the base including at least a first sidewall and a second sidewall, the first sidewall and the second sidewall being disposed adjacent to each other;

[0009] The pigtail unit located at the first end is configured to receive external optical signals;

[0010] The first transmitting unit is disposed on the first sidewall. The first light signal emitted by the first transmitting unit is visible light with a preset wavelength. The first light signal is configured to be transmitted to the pigtail unit.

[0011] A second transmitting unit is disposed at the second end, and the second optical signal emitted by the second transmitting unit is configured to be transmitted to the pigtail unit; and

[0012] An optical receiving unit is disposed on the second sidewall, and the optical receiving unit is configured to receive external optical signals received by the pigtail unit.

[0013] In one possible implementation, the first transmitting unit is used to detect the optical link, causing the visible light to light up or turn off within a preset range; wherein the preset range is 5km.

[0014] In one possible implementation, the visible light is visible red light, and the preset wavelength is 650 nm.

[0015] In one possible implementation, the first transmitting unit includes a first transmitting module, a first adjusting ring, and a first filter. The first transmitting module is mounted to the base via the first adjusting ring, and the first filter is disposed within the inner cavity.

[0016] The first transmitting module has a first optical axis, and the first filter is located on the first optical axis, so that the visible light emitted by the first transmitting module is reflected by the first filter and transmitted to the pigtail unit.

[0017] In one possible implementation, the second transmitting unit includes a second transmitting module and a mounting base, wherein the second transmitting module is mounted on the base via the mounting base;

[0018] The wavelength of the second optical signal emitted by the second transmitting module is 1310nm.

[0019] In one possible implementation, the optical receiving unit includes an optical receiving module, a second filter, and a third filter, wherein the optical receiving module is connected to the base, and the second filter and the third filter are disposed within the inner cavity;

[0020] The optical receiving module has a second optical axis that is perpendicular to the third filter. The second filter is tilted relative to the third filter. The external optical signal received by the pigtail unit is refracted by the second filter, transmitted to the third filter, filtered by the filter, and then transmitted to the optical receiving module.

[0021] In one possible implementation, the base is provided with a first mounting hole communicating with the inner cavity, and at least a portion of the optical receiving module is mounted into the first mounting hole; wherein, the bottom wall of the first mounting hole is provided with a first mounting groove, and the third filter is adhered to the first mounting groove;

[0022] The base is also provided with a second mounting hole communicating with the inner cavity. At least a portion of the pigtail unit is installed in the second mounting hole. The bottom wall of the second mounting hole is provided with a second mounting groove. The second filter is bonded to the second mounting groove. The angle between the mounting surface of the second mounting groove and the second optical axis is 45°.

[0023] In one possible implementation, the base is provided with a third mounting hole communicating with the inner cavity, and at least a portion of the first transmitting module is mounted into the third mounting hole;

[0024] The bottom wall of the third mounting hole is provided with a third mounting groove. The first filter is bonded to the third mounting groove by dispensing adhesive. The angle between the mounting surface of the third mounting groove and the first optical axis is 45°.

[0025] In one possible implementation, the base is provided with a fourth mounting hole communicating with the inner cavity, and the edge of the fourth mounting hole is provided with a protruding ring, and the mounting seat is riveted into the protruding ring.

[0026] In one possible implementation, the pigtail unit includes an optical fiber tail sleeve, a pigtail adjustment ring, and a ceramic ferrule.

[0027] The ceramic ferrule is installed to the base via the pigtail adjustment ring, and the optical fiber tail sleeve is fitted on the radial outside of the pigtail adjustment ring.

[0028] The technical solutions provided in this application have the following advantages compared with the prior art:

[0029] The single-fiber three-way optical component provided in this application embodiment can check for optical link faults within a short transmission range by using visible light in the first transmitting unit, saving manual disassembly costs and providing users with a good user experience. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0033] Figure 1 is a schematic diagram of the structure of a single-fiber triaxial optical component provided in an embodiment of this application;

[0034] Figure 2 is a schematic diagram of the structure of the pigtail unit provided in the embodiment of this application;

[0035] Figure 3 is the front view shown in Figure 1;

[0036] Figure 4 is the AA cross-sectional view shown in Figure 3;

[0037] Figure 5 is a top view of the diagram shown in Figure 1;

[0038] Figure 6 is a cross-sectional view of BB shown in Figure 5.

[0039] Explanation of reference numerals in the attached drawings: 1. Base; 11. Inner cavity; 12. First end; 121. Second mounting hole; 1211. Second mounting groove; 13. Second end; 131. Fourth mounting hole; 132. Protruding ring; 14. First sidewall; 141. Third mounting hole; 1411. Third mounting groove; 15. Second sidewall; 151. First mounting hole; 1511. First mounting groove; 16. Third sidewall; 17. Fourth sidewall; 2. Pigtail unit; 21. Fiber optic tail sleeve; 22. Pigtail adjustment ring; 23. Ceramic ferrule; 3. First transmitting unit; 31. First transmitting module; 32. First adjustment ring; 33. First filter; 4. Second transmitting unit; 41. Second transmitting module; 42. Mounting base; 5. Optical receiving unit; 51. Optical receiving module; 52. Second filter; 53. Third filter. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0042] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0043] To address the issue that manual disassembly and inspection are required when optical links malfunction in related technologies, increasing maintenance costs and workload, and making the technology inconvenient to use, this application provides a single-fiber three-way optical component. By utilizing visible light from the first transmitting unit, optical link faults can be inspected within a short transmission range, saving manual disassembly costs and providing users with a better user experience.

[0044] In some exemplary embodiments, as shown in Figures 1-6, a single-fiber triaxial optical component can realize the transmission and reception of multiple signals from a single optical device, reducing the number of optical devices and the cost of optical components.

[0045] The single-fiber three-way optical assembly includes a base 1, a pigtail unit 2, a first transmitting unit 3, a second transmitting unit 4, and a light receiving unit 5.

[0046] The base 1 is made of, for example, metal. Heating can cure the adhesive, and it is not easily deformed, making it durable and extending its service life. The base 1 has an inner cavity 11 for transmitting optical signals. The base 1 has a first end 12 and a second end 13 disposed opposite each other, located between the first end 12 and the second end 13. The base 1 includes at least a first sidewall 14 and a second sidewall 15, which are adjacent to each other. The base 1 may be, for example, rectangular, and in addition to the first and second sidewalls 14 and 15, may also include a third sidewall 16 and a fourth sidewall 17, which are connected sequentially.

[0047] In this embodiment, as shown in Figures 1-6, the pigtail unit 2 is disposed at the first end 12. The pigtail unit 2 is configured to receive external optical signals so as to transmit the external optical signals to the optical receiving unit 5 to complete the signal transmission.

[0048] In some examples, the pigtail unit 2 includes, for example, an optical fiber tail sleeve 21, a pigtail adjustment ring 22, and a ceramic ferrule 23. The ceramic ferrule 23 is installed to the base 1 via the pigtail adjustment ring 22, and the optical fiber tail sleeve 21 is fitted on the radially outer side of the pigtail adjustment ring 22.

[0049] The base 1 has a second mounting hole 121 at its first end 12, which communicates with the inner cavity 11 to ensure normal transmission of optical signals. At least a portion of the ceramic ferrule 23 of the pigtail unit 2 is installed into the second mounting hole 121 to facilitate the transmission of external optical signals to the optical receiving unit 5. The ceramic ferrule 23 has good thermal stability, corrosion resistance, and low loss, which can improve the transmission capability, reliability, and transmission rate of the pigtail unit 2.

[0050] The fiber optic adjustment ring 22 is fitted radially outward of the ceramic ferrule 23 and connects to both the ceramic ferrule 23 and the first end 12 of the base 1. The adjustment ring 22 covers the second mounting hole 121, ensuring the integrity and sealing of the base 1's appearance. The adjustment ring 22 can be soldered to the base 1 to improve installation reliability. The adjustment ring 22 allows for fine-tuning, ensuring a tighter fit between the adjustment ring 22 and the ceramic ferrule 23, preventing the ceramic ferrule 23 from loosening or shifting, further enhancing connection reliability.

[0051] The fiber optic tail sleeve 21 is fitted on the radial outside of the pigtail adjustment ring 22 and fixedly connected to it. The fiber optic tail sleeve 21 wraps around part of the pigtail adjustment ring 22 and part of the ceramic ferrule 23 to prevent them from being exposed, thus protecting them and extending the service life of the pigtail unit 2.

[0052] In this embodiment, as shown in Figures 1-6, the first transmitting unit 3 is disposed on the first sidewall 14. The first optical signal emitted by the first transmitting unit 3 is visible light with a preset wavelength. The first optical signal is configured to be transmitted to the pigtail unit 2, which then transmits it to the outside to achieve signal transmission. The preset wavelength is, for example, 650nm, and the visible light is visible red light. The first transmitting unit 3 is used to detect the optical link, causing the visible light to light up or turn off within a preset range, such as 5km.

[0053] The visible light emitted by the first transmitting unit 3 is used to determine whether the single-fiber three-way optical component is working properly, using the visible red light in the first transmitting unit 3 at 650nm. For example, if the red light flashing can be seen normally, it indicates that it is working properly. If the transmission path of the optical link fails, the single-fiber unidirectional optical component cannot be used normally, and the user will not be able to see the red light flashing.

[0054] In addition, it can also determine whether the optical devices of optical modems used with single-fiber three-way optical components within 5km are emitting light normally, in order to calibrate the optical transmission link and reduce the workload of manually checking optical link faults. If the light is emitted normally, the problem can be located in the transmission line of the single-fiber three-way optical component; if the light is not emitted normally, the problem can be located in the optical device. Using the above method, labor costs can be saved when troubleshooting optical link faults.

[0055] In some examples, the first transmitting unit 3 includes a first transmitting module 31, a first adjusting ring 32, and a first filter 33. The first transmitting module 31 is mounted to the base 1 via the first adjusting ring 32, and the first filter 33 is disposed within the inner cavity 11. The first adjusting ring 32 is fitted radially outward of the first transmitting module 31 and connected to it. The first adjusting ring 32 allows for fine-tuning, ensuring a more precise connection between the first transmitting module 31 and the first adjusting ring 32. The first adjusting ring 32 can rotate, for example, clockwise or counterclockwise, to achieve a tight connection between the first adjusting ring 32 and the first transmitting module 31.

[0056] The first transmitting module 31 has a first optical axis (refer to the X-axis shown in Figure 4), and the first filter 33 is located on the first optical axis, so that the visible light emitted by the first transmitting module 31 is reflected by the first filter 33 and transmitted to the pigtail unit 2, realizing the reception of optical signals. The first filter 33 is tilted relative to the first transmitting module 31, such that the angle β between the first filter 33 and the first optical axis is 45°, to ensure that the visible light emitted by the first transmitting module 31 can be reflected by the first filter 33 to the pigtail unit 2, and transmitted to the outside through its ceramic ferrule 23, completing the output of optical signals.

[0057] The first transmitting module 31 is equipped with a convex lens to focus the light. Using focused light transmission significantly reduces signal loss in optical paths with short wavelength intervals. After the first transmitting unit 3 is powered on, the first transmitting module 31 converts the received digital signal into a 650nm optical signal, which is then focused by the calibrated convex lens and emitted as visible red light at a wavelength of 650nm. This visible red light at a wavelength of 650nm can be used as an indicator. For example, when a single-fiber three-way optical component is used within 5km, the red light indicates normal operation; if the red light is interrupted, it warns of a problem with the optical link or that the normal operating range has been exceeded.

[0058] A third mounting hole 141 is provided on the first sidewall 14 of the base 1. The third mounting hole 141 communicates with the inner cavity 11 to ensure that the optical signal can be transmitted normally. At least a portion of the first transmitting module 31 can be installed into the third mounting hole 141.

[0059] It should be noted that the first transmitting module 31 can also be installed onto the base 1 by riveting. For example, the convex lens of the first transmitting module 31 can be pressed into the third mounting hole 141 of the bare base 1 by physical gravity, ensuring that the convex lens part of the first transmitting module 31 can be completely inserted into the third mounting hole 141 of the base 1. Since the single-fiber triaxial optical component will experience wear and tear during use, making the first transmitting module 31 prone to detachment, laser welding can be used at the connection point between the first transmitting module 31 and the base 1 to improve the reliability of the connection.

[0060] The bottom wall of the third mounting hole 141 is provided with a third mounting groove 1411. The first filter 33 is bonded to the third mounting groove 1411 by dispensing adhesive and then fixed by high-temperature baking adhesive, which improves the reliability of the connection. The mounting surface of the third mounting groove 1411 forms a 45° angle with the first optical axis, so that the first filter 33 can be fixed at a 45° angle with the first optical axis.

[0061] Among them, the third mounting groove 1411 is, for example, a U-shaped groove, on which glue can be applied on the two opposite sides. The amount of glue applied needs to be controlled to a very small amount. If too much glue is applied, it will easily overflow and require rework. The end face of the base 1 needs to be cleaned. The specific amount of glue applied depends on the actual situation.

[0062] In this embodiment, as shown in Figures 1-6, the second transmitting unit 4 is disposed at the second end 13, and the second optical signal emitted by the second transmitting unit 4 is configured to be transmitted to the pigtail unit 2 to complete the output of the optical signal.

[0063] The second transmitting unit 4 includes a second transmitting module 41 and a mounting base 42. The second transmitting module 41 is mounted on the base 1 via the mounting base 42. The wavelength of the second optical signal emitted by the second transmitting module 41 is, for example, 1310nm. Light with a wavelength of 1310nm is invisible light. When the second transmitting module 41 emits invisible light, it is converted into a corresponding digital signal and transmitted to the ceramic ferrule 23 of the fiber optic unit 2. After being transmitted through the ceramic ferrule 23, it is transmitted to the external terminal device to complete the output of the optical signal, which is then provided to the user as audio, video, or other information.

[0064] The second end 13 of the base 1 is provided with a fourth mounting hole 131, which communicates with the inner cavity 11 to ensure normal transmission of optical signals. A protruding ring 132 is provided on the edge of the fourth mounting hole 131, and the mounting base 42 can be riveted into the protruding ring 132.

[0065] The mounting base 42 can be riveted into the bare base 1 by physical gravity, ensuring that at least a portion of the mounting base 42 can be fully inserted into the fourth mounting hole 131 of the base 1. Over time, the mounting base 42 may detach during the use of the single-fiber triaxial optical component. Therefore, laser welding can be used at the connection point between the mounting base 42 and the base 1 to improve the reliability of the connection.

[0066] It should be noted that the connection method between the second transmitting module 41 and the mounting base 42 is the same as or similar to the connection method between the mounting base 42 and the base 1, and the second transmitting module 41 can be fixed by riveting and welding. Using riveting ensures that the convex lens of the second transmitting module 41 is aligned with the second mounting hole 121 for mounting the ceramic ferrule 23 in the pigtail unit 2, without damaging the convex lens of the second transmitting module 41, thus providing a certain degree of protection.

[0067] In this embodiment, as shown in Figures 1-6, the optical receiving unit 5 is disposed on the second sidewall 15, and the optical receiving unit 5 is configured to receive the external optical signal received by the pigtail unit 2. The wavelength of the external optical signal received by the optical receiving unit 5 is 1490 nm.

[0068] In some examples, the optical receiving unit 5 includes an optical receiving module 51, a second filter 52 and a third filter 53, the optical receiving module 51 is connected to the base 1, and the second filter 52 and the third filter 53 are disposed in the inner cavity 11.

[0069] The bottom wall of the second mounting hole 121 of the base 1 is provided with a second mounting groove 1211, and the second filter 52 is bonded to the second mounting groove 1211. The angle between the mounting surface of the second mounting groove 1211 and the second optical axis is 45°. The second mounting groove 1211 is also a U-shaped slot, and adhesive can be applied to its two opposite sides. The amount of adhesive applied needs to be controlled to be extremely small. If too much adhesive is applied, it will easily flow out and require rework, and the end face of the base 1 will need to be cleaned. The specific amount of adhesive applied depends on the actual situation.

[0070] The second sidewall 15 of the base 1 is provided with a first mounting hole 151, which communicates with the inner cavity 11. At least a portion of the optical receiving module 51 is installed in the first mounting hole 151. The bottom wall of the first mounting hole 151 is provided with a first mounting groove 1511, in which the third filter 53 is adhered. The first mounting groove 1511 is, for example, a U-shaped slot, and its connection method with the third filter 53 is the same as the connection method between the second mounting groove 1211 and the second filter 52 described above, and will not be repeated here.

[0071] The optical receiving module 51 has a second optical axis (refer to the Y-axis shown in Figure 6). The second optical axis is perpendicular to the surface of the third filter 53. The second filter 52 is inclined relative to the third filter 53. The external optical signal received by the pigtail unit 2 is refracted by the second filter 52, transmitted to the third filter 53, filtered by it, and then transmitted to the optical receiving module 51.

[0072] The second filter 52 has an angle α of 45° with the second optical axis to refract external optical signals to the third filter 53. The third filter 53 is a 0° filter, which can filter optical signals. By using the combination of the 45° filter and the 0° filter to filter light of other wavelengths, it is ensured that the wavelength light received by the optical receiving module 51 is only 1490nm wavelength light.

[0073] In this embodiment, the optical receiving unit 5 is disposed on the second side wall 15 of the base 1 and located on the second optical axis. The first transmitting unit 3 is disposed on the first side wall 14 of the base 1 and located on the first optical axis. The first side wall 14 and the second side wall 15 are disposed adjacent to each other, so that the optical receiving unit 5 and the first transmitting unit 3 are not opposed to each other and are staggered. This is different from the arrangement of single-fiber three-way optical devices in related technologies. In related technologies, single-fiber three-way optical devices use coaxial or unidirectional transceiver modules. The optical receiving unit 5 in this application uses back-side or side-wall coupling, which improves the fit between the single-fiber three-way optical component and the optical modem, improves the problem of unreasonable arrangement design of the transmitting or receiving unit, and optimizes the overall volume of the single-fiber three-way optical component.

[0074] The single-fiber unidirectional optical component provided in this application can integrate a coaxial transceiver pigtail unit, a first transmitting unit with a wavelength of 650nm, a second transmitting unit with a wavelength of 1310nm, and a 1490nm optical receiving unit on a base, and provide a ceramic ferrule for optical signal transmission, achieving the effect of two transmitters and one receiver, reducing the number of optical devices and the overall size of the single-fiber unidirectional optical component.

[0075] The single-fiber three-way optical component in this application can also be used in Gigabit-Capable PON (GPON). Through the visible red light in the first transmitting unit, optical link faults can be checked within a short transmission range, saving manual disassembly costs and providing users with a good user experience. This is of great significance for further promoting the fiber-to-the-home concept.

[0076] The first transmitting unit employs a 45° filter and visible red light to calibrate the receiving and transmitting optical links, thus adding a 650nm first optical transmitting module to the single-fiber three-way optical assembly. This gives the single-fiber three-way optical assembly a visual calibration function within a certain range. The first transmitting unit is located on the back of the base, achieving an interleaved design to improve the fit between the first transmitting unit, the second transmitting unit, and the optical receiving unit.

[0077] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0078] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0079] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A single-fiber triaxial optical component, characterized in that, include: A base having an inner cavity for transmitting optical signals, the base having a first end and a second end disposed opposite to each other, located between the first end and the second end, the base including at least a first sidewall and a second sidewall, the first sidewall and the second sidewall being disposed adjacent to each other; The pigtail unit located at the first end is configured to receive external optical signals; The first transmitting unit is disposed on the first sidewall. The first light signal emitted by the first transmitting unit is visible light with a preset wavelength. The first light signal is configured to be transmitted to the pigtail unit. The second transmitting unit disposed at the second end is configured to transmit the second optical signal emitted by the second transmitting unit to the pigtail unit; as well as An optical receiving unit is disposed on the second sidewall, and the optical receiving unit is configured to receive external optical signals received by the pigtail unit.

2. The single-fiber triaxial optical component according to claim 1, characterized in that, The first transmitting unit is used to detect the optical link, so that the visible light is turned on or off within a preset range; wherein, the preset range is 5km.

3. The single-fiber triaxial optical component according to claim 1 or 2, characterized in that, The visible light is visible red light, and the preset wavelength is 650nm.

4. The single-fiber triaxial optical component according to claim 1, characterized in that, The first transmitting unit includes a first transmitting module, a first adjusting ring, and a first filter. The first transmitting module is mounted to the base via the first adjusting ring, and the first filter is disposed within the inner cavity. The first transmitting module has a first optical axis, and the first filter is located on the first optical axis, so that the visible light emitted by the first transmitting module is reflected by the first filter and transmitted to the pigtail unit.

5. The single-fiber triaxial optical component according to claim 1, characterized in that, The second launching unit includes a second launching module and a mounting base, wherein the second launching module is mounted on the base via the mounting base; The wavelength of the second optical signal emitted by the second transmitting module is 1310nm.

6. The single-fiber triaxial optical component according to claim 1, characterized in that, The optical receiving unit includes an optical receiving module, a second filter, and a third filter. The optical receiving module is connected to the base, and the second filter and the third filter are disposed inside the cavity. The optical receiving module has a second optical axis that is perpendicular to the third filter. The second filter is tilted relative to the third filter. The external optical signal received by the pigtail unit is refracted by the second filter, transmitted to the third filter, filtered by the filter, and then transmitted to the optical receiving module.

7. The single-fiber triaxial optical component according to claim 6, characterized in that, The base is provided with a first mounting hole communicating with the inner cavity, and at least a portion of the optical receiving module is installed in the first mounting hole; wherein, the bottom wall of the first mounting hole is provided with a first mounting groove, and the third filter is adhered to the first mounting groove; The base is also provided with a second mounting hole communicating with the inner cavity. At least a portion of the pigtail unit is installed in the second mounting hole. The bottom wall of the second mounting hole is provided with a second mounting groove. The second filter is bonded to the second mounting groove. The angle between the mounting surface of the second mounting groove and the second optical axis is 45°.

8. The single-fiber triaxial optical component according to claim 4, characterized in that, The base is provided with a third mounting hole communicating with the inner cavity, and at least a portion of the first transmitting module is mounted into the third mounting hole; The bottom wall of the third mounting hole is provided with a third mounting groove. The first filter is bonded to the third mounting groove by dispensing adhesive. The angle between the mounting surface of the third mounting groove and the first optical axis is 45°.

9. The single-fiber triaxial optical component according to claim 5, characterized in that, The base is provided with a fourth mounting hole communicating with the inner cavity, and the edge of the fourth mounting hole is provided with a protruding ring, and the mounting seat is riveted into the protruding ring.

10. The single-fiber triaxial optical component according to claim 1, characterized in that, The pigtail unit includes an optical fiber tail sleeve, a pigtail adjustment ring, and a ceramic ferrule. The ceramic ferrule is installed to the base via the pigtail adjustment ring, and the optical fiber tail sleeve is fitted on the radial outside of the pigtail adjustment ring.

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