A distinguishable optical splitter, topological network, identification system and method

Abstract

A distinguishable optical splitter, topology network, identification system and method. When the processing side sends an identification light wave to the optical splitter body, the first optical fiber code corresponding to the wavelength of the identification light wave reflects the identification light wave back to the processing side for the first time. At the same time, the identification light wave transmits through the optical splitter body and is reflected back to the processing side for the second time. The identification light wave continues to be transmitted to the set second optical fiber code and is reflected back to the processing side for the third time. The processing side can analyze the three reflected light waves to realize the identification of the optical splitter body and its output branches. Since the wavelengths of multiple first optical fiber codes are different and the mutual spacings are also different, multiple optical splitters can be distinguished, so that the analysis results of the first reflected light waves are all different. At the same time, the second optical fiber codes on the output branches of each optical splitter body are also set differently, so that the analysis results of the third reflected light waves are all different. Therefore, the distinguishable identification of multiple optical splitter bodies and their output branches can be finally realized.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber communication, and in particular, to a splitter, a topology network, an identification system and a method that can be distinguished and identified. Background Art

[0002] Passive Optical Network (PON) technology is a point-to-multipoint optical fiber access technology, which consists of an Optical Line Terminal (OLT) device on the central office side, an Optical Network Unit (ONU) device on the user side, and an Optical Distribution Network (ODN). Among them, the ODN is entirely composed of passive devices such as splitters and does not require expensive active electronic devices.

[0003] In order to identify each device in the PON network, it is necessary to indirectly identify the splitter set in the middle of the network. In the case of a large number of devices, the splitters will form a topology network in a multi-stage connection manner. For multiple downstream splitters connected to the same upstream splitter, in order to facilitate actual setting operations, it is inevitable that at least two downstream splitters have the same setting distance from the upstream splitter. However, the identification process of the splitter will send light waves to the splitter and perform spectral analysis processing after reflection to determine the splitter corresponding to the reflected light waves for identification. Since there are multiple splitters with equal spacing settings, the processing side will receive the light waves reflected by multiple splitters simultaneously during the identification process, resulting in the inability to distinguish the reflected light waves, and thus it is difficult to distinguish and identify multiple splitters. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention proposes a splitter that can be distinguished and identified, which solves the problem of difficultly distinguishing and identifying multiple splitters with equal spacing settings in the current multi-stage splitter network.

[0005] The present invention also provides a topology network of a splitter that can be distinguished and identified, an identification system of a topology network of a splitter that can be distinguished and identified, and an identification method of a topology network of a splitter that can be distinguished and identified.

[0006] The splitter that can be distinguished and identified according to the first aspect embodiment of the present invention includes:

[0007] A splitter body, whose input end is connected to a first optical fiber, and multiple output ends are respectively connected to multiple second optical fibers one by one;

[0008] A plurality of first optical fiber codes are provided on the first optical fiber. Different spacings are provided between each of the first optical fiber codes and the optical splitter body, and each of the first optical fiber codes has a different wavelength.

[0009] A plurality of second optical fiber codes are respectively provided on the plurality of second optical fibers one by one, and the plurality of second optical fiber codes are jointly used to identify and distinguish the plurality of output ends of the optical splitter body.

[0010] The distinguishable optical splitter according to the embodiment of the present invention has at least the following beneficial effects:

[0011] By providing a plurality of first optical fiber codes on the first optical fiber connected to the input end of the optical splitter body, when the processing side sends an identification light wave to the optical splitter body, a first optical fiber code corresponding to the wavelength of the identification light wave will reflect the identification light wave back to the processing side for the first time. At the same time, the identification light wave transmits through the optical splitter body and is reflected back to the processing side for the second time. The identification light wave continues to be transmitted to the second optical fiber code corresponding to the wavelength of the identification light wave provided on the second optical fiber and is reflected back to the processing side for the third time. The processing side can analyze the three reflected light waves to realize the identification of the optical splitter body and its output branches. Since the wavelengths of the plurality of first optical fiber codes are different and the mutual spacings are also different, even if a plurality of optical splitter bodies are at the same level in a multi-level optical splitter network and are equidistantly arranged from the upper level, that is, the analysis results of the second reflected light waves are the same, the plurality of optical splitter bodies can be distinguished by using the plurality of first optical fiber codes, so that the analysis results of the first reflected light waves are all different. At the same time, the second optical fiber codes on the output branches of each optical splitter body are also set differently, so that the analysis results of the third reflected light waves are all different. Therefore, the distinction and identification of a plurality of optical splitter bodies and their output branches can be finally realized.

[0012] According to some embodiments of the present invention, the plurality of second optical fiber codes have different wavelengths and the set spacings between the plurality of second optical fiber codes are different, and the wavelength of each second optical fiber code corresponds to the wavelength of each first optical fiber code one by one.

[0013] According to some embodiments of the present invention, the plurality of second optical fiber codes have different wavelengths and the set spacings between the plurality of second optical fiber codes are the same, and the wavelength of each second optical fiber code corresponds to the wavelength of each first optical fiber code one by one.

[0014] According to some embodiments of the present invention, the plurality of second optical fiber codes have the same wavelength and the set spacings between the plurality of second optical fiber codes are different, and the wavelength of each second optical fiber code is the same as the wavelength of any one of the plurality of first optical fiber codes.

[0015] According to some embodiments of the present invention, a third optical fiber code is further provided on each of the second optical fibers, the setting intervals between each of the third optical fiber codes and each of the second optical fiber codes are different, and each of the third optical fiber codes is used to ensure the distinguishable identification of multiple output ends of the optical splitter body.

[0016] The distinguishable identification optical splitter topology network according to the second aspect embodiment of the present invention includes a plurality of distinguishable identification optical splitters as described in any one of the first aspect embodiments of the present invention, and the plurality of distinguishable identification optical splitters are connected to form a tree-like topology network structure.

[0017] The distinguishable identification optical splitter topology network according to the embodiment of the present invention has at least the following beneficial effects:

[0018] The distinguishable identification optical splitters according to the embodiments of the present invention are connected in multiple stages to form a tree-like topology network structure, which can be used as an optical distribution network in a passive optical fiber network. At the same time, since each distinguishable identification optical splitter in the distinguishable identification optical splitter topology network according to the embodiments of the present invention can achieve distinguishable identification, in actual large-scale applications, relevant on-site technicians do not need to consider too much the setting distance between multiple optical splitters of the same level and the previous-level optical splitter when building a multi-stage optical splitter network, and can perform equidistant setting quickly, so that the actual building scenario is more flexible and convenient for large-scale and rapid construction of the network.

[0019] The identification system of the distinguishable identification optical splitter topology network according to the third aspect embodiment of the present invention includes:

[0020] A light source module for outputting pulsed light waves of different wavelengths;

[0021] A circulator includes a first port, a second port, and a third port, and the first port is connected to the output end of the light source module;

[0022] An optoelectronic processing module, whose input end is connected to the third port;

[0023] A control module is electrically connected to the light source module and the optoelectronic processing module respectively;

[0024] The distinguishable identification optical splitter topology network as described in the second aspect embodiment of the present invention, whose input end is connected to the second port.

[0025] The identification system of the distinguishable identification optical splitter topology network according to the embodiment of the present invention has at least the following beneficial effects:

[0026] Under the operation of the control module, a pulsed light wave is sent by the light source module into the distinguishable and identifiable optical splitter topology network of the embodiment of the present invention. The first optical fiber coding of each distinguishable and identifiable optical splitter in the distinguishable and identifiable optical splitter topology network reflects the pulsed light wave and transmits it back to the optoelectronic processing module. After processing, the distinction of each optical splitter body in the topology network is realized; the optical splitter body of each distinguishable and identifiable optical splitter reflects the pulsed light wave and transmits it back to the optoelectronic processing module. After processing, the identification of each optical splitter body in the topology network is realized; the second optical fiber coding of each distinguishable and identifiable optical splitter reflects the pulsed light wave and transmits it back to the optoelectronic processing module. After processing, the distinction and identification of each output branch of each optical splitter body in the topology network are realized. Therefore, by using the identification system of the embodiment of the present invention, even if multiple distinguishable and identifiable optical splitters at the same level in the distinguishable and identifiable optical splitter topology network are respectively arranged at equal intervals from the upper-level distinguishable and identifiable optical splitter, the distinction and identification of each distinguishable and identifiable optical splitter can be realized.

[0027] According to some embodiments of the present invention, the optoelectronic processing module includes:

[0028] An optoelectronic conversion unit, whose input end is connected to the third port. The optoelectronic conversion unit is used to convert an optical signal into an electrical signal;

[0029] An analog-to-digital conversion unit, whose input end is connected to the output end of the optoelectronic conversion unit, and the output end is electrically connected to the control module.

[0030] The identification method of the distinguishable and identifiable optical splitter topology network according to the fourth aspect embodiment of the present invention is applied to the identification system of the distinguishable and identifiable optical splitter topology network as described in the third aspect embodiment of the present invention, and includes the following steps:

[0031] Output multiple different broadband pulsed light waves from the light source module to the circulator, and transmit them to the multiple first optical fiber codings and multiple second optical fiber codings in the distinguishable and identifiable optical splitter topology network through the circulator;

[0032] The circulator respectively receives multiple reflected light waves reflected by the multiple first optical fiber codings and multiple second optical fiber codings;

[0033] The optoelectronic processing module processes the multiple reflected light waves so that the control module completes the identification of the multiple optical splitter bodies and output branches.

[0034] The identification method of the distinguishable and identifiable optical splitter topology network according to the embodiment of the present invention has at least the following beneficial effects:

[0035] Apply the recognition method of the embodiments of the present invention to the recognition system of the embodiments of the present invention, so that the light source module sends out pulsed light waves to the distinguishable recognition splitter topology network of the embodiments of the present invention. The first optical fiber code of each distinguishable recognition splitter in the distinguishable recognition splitter topology network reflects the pulsed light waves and transmits them back to the optoelectronic processing module. After processing, the distinction of each splitter body in the topology network is realized; the splitter body of each distinguishable recognition splitter reflects the pulsed light waves and transmits them back to the optoelectronic processing module. After processing, the recognition of each splitter body in the topology network is realized; the second optical fiber code of each distinguishable recognition splitter reflects the pulsed light waves and transmits them back to the optoelectronic processing module. After processing, the distinction recognition of each output branch of each splitter body in the topology network is realized. Therefore, by using the recognition method of the embodiments of the present invention, even if multiple distinguishable recognition splitters at the same level in the distinguishable recognition splitter topology network are respectively arranged at equal intervals from the upper-level distinguishable recognition splitter, the distinguishable recognition of each distinguishable recognition splitter can be realized.

[0036] According to some embodiments of the present invention, the optoelectronic processing module processes the multiple reflected light waves so that the control module completes the recognition of the multiple splitter bodies and output branches, including the following steps:

[0037] The optoelectronic conversion unit receives the multiple reflected light waves and converts the optical signals of the multiple reflected light waves into multiple analog electrical signals;

[0038] The analog-to-digital conversion unit receives the multiple analog electrical signals and converts the multiple analog electrical signals into multiple digital signals;

[0039] The control module processes the multiple digital signals to complete the recognition of the multiple splitter bodies and output branches.

[0040] Other features and advantages of the present invention will be described in the following specification, and, in part, will become apparent from the specification or will be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0042] Figure 1 is a schematic structural diagram of the first distinguishable recognition splitter according to an embodiment of the present invention;

[0043] Figure 2 is a schematic structural diagram of the second distinguishable recognition splitter according to an embodiment of the present invention;

[0044] Figure 3It is a schematic structural diagram of the third distinguishable optical splitter according to an embodiment of the present invention;

[0045] Figure 4 It is a schematic structural diagram of the fourth distinguishable optical splitter according to an embodiment of the present invention;

[0046] Figure 5 It is a schematic diagram of the distinguishing and identifying effect of the distinguishable optical splitter according to an embodiment of the present invention;

[0047] Figure 6 It is a schematic structural diagram of the topological network of the distinguishable optical splitter according to an embodiment of the present invention;

[0048] Figure 7 It is a schematic diagram of the distinguishing and identifying effect of the topological network of the distinguishable optical splitter according to an embodiment of the present invention;

[0049] Figure 8 It is a schematic structural diagram of the identification system of the topological network of the distinguishable optical splitter according to an embodiment of the present invention;

[0050] Figure 9 It is a flowchart of the identification method of the topological network of the distinguishable optical splitter according to an embodiment of the present invention.

[0051] Reference numerals:

[0052] Optical splitter body 110; First optical fiber code 120; Second optical fiber code 130; Third optical fiber code 140;

[0053] Light source module 210; Circulator 220; Photoelectric conversion unit 231; Analog-to-digital conversion unit 232; Control module 240; Distinguishable optical splitter topological network 250; Distinguishable optical splitter 251. Detailed implementation manners

[0054] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0055] In the description of the present invention, if the first, second, etc. are described, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0056] In the description of the present invention, it should be understood that for the orientation descriptions, such as the upper and lower directions, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0057] In the description of the present invention, it should be noted that unless otherwise clearly defined, terms such as "set", "installed", and "connected" should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0058] Next, the technical solution of the present invention will be clearly and completely described with reference to the drawings. Obviously, the following described embodiments are some, but not all, of the embodiments of the present invention.

[0059] Refer to Figures 1 to 3 As shown, the distinguishable optical splitter 251 provided in the embodiment of the present invention includes: an optical splitter body 110, a plurality of first optical fiber codes 120, and a plurality of second optical fiber codes 130. The input end of the optical splitter body 110 is connected to a first optical fiber, and a plurality of output ends are respectively connected to a plurality of second optical fibers; the plurality of first optical fiber codes 120 are provided on the first optical fiber, and different distances are provided between each first optical fiber code 120 and the optical splitter body 110 respectively, and each first optical fiber code 120 has a different wavelength; the plurality of second optical fiber codes 130 are respectively provided on the plurality of second optical fibers, and the plurality of second optical fiber codes 130 are jointly used to identify and distinguish the plurality of output ends of the optical splitter body 110.

[0060] Specifically, with reference to FIGS. 1 to Figure 3 As shown, the optical splitter body 110 is an optical splitter, also known as an optical splitter, which is a connecting device with multiple input ends and output ends. It can realize the coupling, branching, and distribution of optical signals in an optical network system and is the most important component in an optical fiber link. Commonly, M×N is used to represent that an optical splitter has M input ends and N output ends. In today's network, the optical splitters used are generally 1×2 and 1×4 optical splitters. For example, Figures 1 to 3The optical splitter used therein is a 1×4 optical splitter. Four first optical fiber codes 120 are provided on the first optical fiber connected to the input end. The distances between the four first optical fiber codes 120 and the optical splitter body 110 are k1, k2, k3, and k4 in sequence. The wavelengths of the corresponding four optical fiber codes are λ1, λ2, λ3, and λ4 respectively. It can be understood that k1≠k2≠k3≠k4 and λ1≠λ2≠λ3≠λ4. At the same time, second optical fiber codes 130 are respectively provided on the four second optical fibers connected to the four output ends. Similarly, according to the setting method of different or the same wavelengths and spacings, these four second optical fiber codes 130 can be distinguished and identified. For example, the setting method such as Figure 1 can be adopted. The wavelengths of the four second optical fiber codes 130 are respectively set to λ1, λ2, λ3, and λ4, which respectively correspond to the four first optical fiber codes 120. Therefore, by using the optical fiber code recognition device to send the recognition light wave, the recognition light wave with a wavelength of λ1 will be reflected and transmitted at the first optical fiber code 120 closest to the optical splitter body 110, and then be reflected and transmitted by the optical splitter body 110 and continue to be transmitted to the second optical fiber code 130 of the first output branch for reflection and transmission. For the three reflected light waves received by the optical fiber code recognition device, the schematic diagram of the effect is as Figure 5 shown. Similarly, for the recognition light waves with wavelengths of λ2, λ3, and λ4, they will also perform corresponding reflections and transmissions. From Figure 5 it can be seen that although the reflection peaks of the optical splitter body 110 are the same, the reflection peaks of the first optical fiber code 120 and the second optical fiber code 130 before and after it are different. Therefore, in a multi-stage optical splitter network composed of multiple distinguishable optical splitters 251, each transmission path can be independently distinguished.

[0061] It can be understood that Figures 1 to 3 taking the 1×4 optical splitter as an example, it is also applicable to other one-to-many optical splitters, and the number of the first optical fiber codes 120 provided should be the same as the number of output ends of the optical splitter body 110. This is because the first optical fiber code 120 can actually be understood as numbering each of its output branches differently, so that the other optical splitter bodies 110 connected to each output branch can be distinguished from each other.

[0062] It should be noted that there are various ways to implement the reflection or transmission identification for the first optical fiber code 120 and the second optical fiber code 130, mainly including fiber Bragg gratings, reflection films (sheets), transmission films (sheets), and silicon-based line-engraved gratings. Since the wavelength widths of existing products of reflection films (sheets) and transmission films (sheets) are relatively large, they are not suitable for existing application scenarios; silicon-based line-engraved gratings can be directly engraved on the silicon substrate of the optical splitter, but the silicon substrate requires a small size, and the distance between the silicon-based line-engraved grating and the optical splitter is very small, requiring high precision for both the light source pulse and the acquisition space, and the cost is also very high; fiber Bragg gratings include reflection fiber Bragg gratings, transmission fiber Bragg gratings, phase fiber Bragg gratings, etc., which can be directly engraved on the optical fiber and can be directly docked with optical fiber material products, and the cost is relatively low. Therefore, fiber Bragg gratings are preferably used as the first optical fiber code 120 and the second optical fiber code 130 in the embodiments of the present invention. It should also be noted that for the distances between multiple first optical fiber codes 120 and the optical splitter body 110 respectively, they can be set in increasing sizes by the same multiple, and the wavelengths and spacings of multiple first optical fiber codes 120 are randomly corresponding settings.

[0063] In this embodiment, by setting multiple first optical fiber codes 120 on the first optical fiber connected to the input end of the optical splitter body 110, when the processing side sends an identification light wave to the optical splitter body 110, a first optical fiber code 120 corresponding to the wavelength of the identification light wave will first reflect the identification light wave back to the processing side, and at the same time, the identification light wave is transmitted to the optical splitter body 110 and reflected back to the processing side for the second time. The identification light wave continues to be transmitted to the second optical fiber code 130 corresponding to the wavelength of the identification light wave on the second optical fiber and reflected back to the processing side for the third time. The processing side can analyze the three reflected light waves to realize the identification of the optical splitter body 110 and its output branches. Since the wavelengths of multiple first optical fiber codes 120 are different and the distances between them are also different, even if multiple optical splitter bodies 110 are at the same level in a multi-stage optical splitter network and are equidistant from the upper level, that is, the analysis results of the second reflected light waves are the same, multiple optical splitter bodies 110 can be distinguished by using multiple first optical fiber codes 120, making the analysis results of the first reflected light waves all different. At the same time, the second optical fiber codes 130 on the output branches of each optical splitter body 110 are also set differently, making the analysis results of the third reflected light waves all different. Therefore, the distinction and identification of multiple optical splitter bodies 110 and their output branches can be finally realized.

[0064] In some embodiments, as Figure 1 shown, multiple second optical fiber codes 130 have different wavelengths and different setting distances between multiple second optical fiber codes 130, and the wavelength of each second optical fiber code 130 corresponds to the wavelength of each first optical fiber code 120 one by one.

[0065] Specifically, referring to Figure 1, the wavelength settings of the four second optical fiber codes 130 are different, which are λ1, λ2, λ3, and λ4 respectively, and correspond one-to-one with the wavelengths of the four first optical fiber codes 120. Therefore, the four output branches can be made to correspond to "numbers" with different wavelengths to obtain discrimination and recognition. By setting different spacings, the distinction between the four output branches can be further enhanced. For a specific schematic diagram of the recognition effect, refer to Figure 5 . It should be noted that for the distances between multiple second optical fiber codes 130, they can be set in sizes that increase in the same multiple.

[0066] In some embodiments, such as Figure 2 shown, multiple second optical fiber codes 130 have different wavelengths and the set spacings between multiple second optical fiber codes 130 are the same, and the wavelength of each second optical fiber code 130 corresponds one-to-one with the wavelength of each first optical fiber code 120.

[0067] Specifically, referring to Figure 2 , it can be understood that for multiple second optical fiber codes 130, setting different wavelengths can achieve a unique "number" for multiple output branches. Therefore, the set spacings between multiple second optical fiber codes 130 can be the same without affecting discrimination and recognition.

[0068] In some embodiments, such as Figure 3 shown, multiple second optical fiber codes 130 have the same wavelength and the set spacings between multiple second optical fiber codes 130 are different, and the wavelength of each second optical fiber code 130 is the same as the wavelength of any one of the multiple first optical fiber codes 120.

[0069] Specifically, referring to Figure 3 , in addition to setting multiple second optical fiber codes 130 with different wavelengths to achieve discrimination and recognition, a setting method with the same wavelength and different spacings can also be used to distinguish multiple second optical fiber codes 130. It can be understood that on the schematic diagram of the effect (not drawn), for a recognition light wave with a specific wavelength, when it is transmitted to the output end of the optical splitter body 110, there may be multiple consecutive reflection peaks, but the spacings between each reflection peak are different, so the corresponding multiple output branches can be distinguished. It can be understood that the method of this embodiment is relatively more difficult to recognize, so it is preferably to set multiple second optical fiber codes 130 with different wavelengths.

[0070] In some embodiments, such as Figure 4 shown, a third optical fiber code 140 is also set on each second optical fiber, the set spacings between each third optical fiber code 140 and each second optical fiber code 130 are different, and each third optical fiber code 140 is used to ensure the discrimination and recognition of multiple output ends of the optical splitter body 110.

[0071] Specifically, referring to Figure 4 , the third optical fiber code 140 can be understood as a check code, which can further ensure the accurate discrimination and identification of each output branch. It should be noted that taking Figure 4 as an example, the set wavelengths of the 4 second optical fiber codes 130 are λ1, λ2, λ3, and λ4 respectively, then the set wavelengths of the corresponding 4 third optical fiber codes 140 are λ3, λ4, λ5, and λ6 respectively. That is, if the wavelength of the second optical fiber code 130 is λi, then the wavelength of the third optical fiber code 140 is λ(i + 2). At the same time, the distance between the second optical fiber code 130 and the third optical fiber code 140 is set the same as the distance between the second optical fiber code 130 and the splitter body 110.

[0072] In addition, referring to Figure 6 , an embodiment of the present invention also provides a distinguishable and identifiable splitter topology network 250, which includes a plurality of distinguishable and identifiable splitters 251 as described in any one of the embodiments of the first aspect of the present invention, and the plurality of distinguishable and identifiable splitters 251 are connected to form a tree-like topology network structure.

[0073] Specifically, referring to Figure 6 , it is a schematic diagram of the distinguishable and identifiable splitter topology network 250 according to an embodiment of the present invention. It can be understood that for the first-level distinguishable and identifiable splitter 251 in the network, the discrimination and identification of each output branch can be realized. Therefore, for the second-level distinguishable and identifiable splitter 251 connected to multiple output branches, it is obvious that it can be discriminated and identified. By analogy, each level of distinguishable and identifiable splitter 251 can ultimately be discriminated and identified. For the specific identification effect schematic diagram, refer to Figure 7 . At the same time, the settings of the wavelengths and distances of the multiple first optical fiber codes 120 of each distinguishable and identifiable splitter 251 in the network do not necessarily have to be exactly the same. For example, the setting correspondence of a certain distinguishable and identifiable splitter 251 is: k1, k2, k3, k4 corresponding to λ1, λ2, λ3, λ4, while the setting correspondence of another distinguishable and identifiable splitter 251 is: k1, k2, k3, k4 corresponding to λ4, λ1, λ2, λ3, so as to randomize the reflection peaks in the identification effect diagram, thereby ensuring more obvious discrimination and identification between each distinguishable and identifiable splitter 251.

[0074] It can be understood that the distinguishable optical splitter 251 of the embodiment of the present invention is connected in multiple stages to form a tree-like topological network structure, which can be used as an optical distribution network in a passive optical fiber network. At the same time, since each distinguishable optical splitter 251 in the distinguishable optical splitter topological network 250 of the embodiment of the present invention can achieve distinguishable identification, in actual large-scale applications, relevant on-site technicians do not need to consider too much the setting distance between multiple optical splitters of the same level and the previous-level optical splitter when building a multi-level optical splitter network, that is, they can quickly perform equidistant setting, so that the actual building scenario is more flexible and convenient for large-scale and rapid construction of the network.

[0075] In addition, as Figure 8 shown, the embodiment of the present invention also proposes an identification system for a distinguishable optical splitter topological network 250, including a light source module 210, a circulator 220, an optoelectronic processing module, a control module 240, and a distinguishable optical splitter topological network 250 as in the embodiment of the second aspect of the present invention. The light source module 210 is used to output pulsed light waves of different wavelengths; the circulator 220 includes a first port, a second port, and a third port, and the first port is connected to the output end of the light source module 210; the input end of the optoelectronic processing module is connected to the third port; the control module 240 is electrically connected to the light source module 210 and the optoelectronic processing module respectively; the input end of the distinguishable optical splitter topological network 250 is connected to the second port.

[0076] Specifically, referring to Figure 8 , under the control operation of the control module 240, the light source module 210 will emit pulsed light waves of different wavelengths to the circulator 220, and the circulator 220 will transmit the pulsed light waves into the distinguishable optical splitter topological network 250, that is, among multiple distinguishable optical splitters 251. When the pulsed light waves are respectively transmitted to the first optical fiber code 120, the optical splitter body 110, and the second optical fiber code 130 of the distinguishable optical splitter 251, they will be reflected back to the circulator 220 according to different wavelengths and further transmitted to the optoelectronic processing module for processing, so as to respectively realize the distinguishable identification of each distinguishable optical splitter 251.

[0077] It can be understood that, under the operation of the control module 240, a pulsed light wave is sent by the light source module 210 into the distinguishable and identifiable optical splitter topology network 250 of the embodiment of the present invention. The first optical fiber code 120 of each distinguishable and identifiable optical splitter 251 in the distinguishable and identifiable optical splitter topology network 250 reflects the pulsed light wave and transmits it back to the optoelectronic processing module, and after processing, the distinction of each optical splitter body 110 in the topology network is realized; the optical splitter body 110 of each distinguishable and identifiable optical splitter 251 reflects the pulsed light wave and transmits it back to the optoelectronic processing module, and after processing, the identification of each optical splitter body 110 in the topology network is realized; the second optical fiber code 130 of each distinguishable and identifiable optical splitter 251 reflects the pulsed light wave and transmits it back to the optoelectronic processing module, and after processing, the distinction and identification of each output branch of each optical splitter body 110 in the topology network are realized. Therefore, by using the identification system of the embodiment of the present invention, even if multiple distinguishable and identifiable optical splitters 251 at the same level in the distinguishable and identifiable optical splitter topology network 250 are respectively arranged at equal intervals from the upper-level distinguishable and identifiable optical splitter 251, the distinction and identification of each distinguishable and identifiable optical splitter 251 can be realized.

[0078] In some embodiments, the optoelectronic processing module includes an optoelectronic conversion unit 231 and an analog-to-digital conversion unit 232. The input end of the optoelectronic conversion unit 231 is connected to the third port, and the optoelectronic conversion unit 231 is used to convert an optical signal into an electrical signal; the input end of the analog-to-digital conversion unit 232 is connected to the output end of the optoelectronic conversion unit 231, and the output end is electrically connected to the control module 240.

[0079] Specifically, the optoelectronic processing module can adopt the combination of the optoelectronic conversion unit 231 and the analog-to-digital conversion unit 232. Specifically, the reflected light wave is processed by the optoelectronic conversion unit 231 to convert the optical signal into an analog electrical signal, and further processed by the analog-to-digital conversion unit 232 to convert the analog electrical signal into a digital signal, and then transmitted to the control module 240 for processing. Specifically, the optoelectronic conversion unit 231 can use a PIN photodiode to achieve optoelectronic conversion, or an avalanche photodiode (APD) to achieve optoelectronic conversion. The core processor of the control module 240 can adopt a single-chip microcomputer, a DSP or an ARM, and specifically, an STM32 series processor can be used.

[0080] In addition, as Figure 9 shown, a method for identifying a distinguishable and identifiable optical splitter topology network 250 provided by an embodiment of the present invention is applied to an identification system for a distinguishable and identifiable optical splitter topology network 250 such as the embodiment of the present invention, and includes the following steps:

[0081] The light source module 210 outputs multiple different broadband pulsed light waves to the circulator 220, and transmits them through the circulator 220 to multiple first optical fiber codes 120 and multiple second optical fiber codes 130 in the distinguishable and recognizable optical splitter topology network 250;

[0082] The circulator 220 receives multiple reflected light waves reflected by multiple first optical fiber codes 120 and multiple second optical fiber codes 130 respectively;

[0083] The optoelectronic processing module processes multiple reflected light waves so that the control module 240 completes the recognition of multiple optical splitter bodies 110 and output branches.

[0084] Specifically, referring to Figure 9 , it is a flowchart of the recognition method of the distinguishable and recognizable optical splitter topology network 250 according to the embodiment of the present invention. It should be noted that the recognition system of the distinguishable and recognizable optical splitter topology network 250 in the embodiment of the present application is used to implement the above-mentioned recognition method of the distinguishable and recognizable optical splitter topology network 250. The recognition method of the distinguishable and recognizable optical splitter topology network 250 in the embodiment of the present application corresponds to the aforementioned recognition system of the distinguishable and recognizable optical splitter topology network 250. For the specific processing process, please refer to the aforementioned recognition system of the distinguishable and recognizable optical splitter topology network 250, which will not be elaborated here.

[0085] It can be understood that applying the recognition method of the embodiment of the present invention to the recognition system of the embodiment of the present invention enables the light source module 210 to send out pulsed light waves into the distinguishable and recognizable optical splitter topology network 250 of the embodiment of the present invention. The first optical fiber code 120 of each distinguishable and recognizable optical splitter 251 in the distinguishable and recognizable optical splitter topology network 250 reflects the pulsed light waves and transmits them back to the optoelectronic processing module, and after processing, the distinction of each optical splitter body 110 in the topology network is realized; the optical splitter body 110 of each distinguishable and recognizable optical splitter 251 reflects the pulsed light waves and transmits them back to the optoelectronic processing module, and after processing, the recognition of each optical splitter body 110 in the topology network is realized; the second optical fiber code 130 of each distinguishable and recognizable optical splitter 251 reflects the pulsed light waves and transmits them back to the optoelectronic processing module, and after processing, the distinction recognition of each output branch of each optical splitter body 110 in the topology network is realized. Therefore, by using the recognition method of the embodiment of the present invention, even if multiple distinguishable and recognizable optical splitters 251 at the same level in the distinguishable and recognizable optical splitter topology network 250 are respectively arranged at equal intervals from the upper-level distinguishable and recognizable optical splitter 251, the distinction and recognition of each distinguishable and recognizable optical splitter 251 can be realized.

[0086] In some embodiments, the optoelectronic processing module processes multiple reflected light waves so that the control module 240 completes the recognition of multiple optical splitter bodies 110 and output branches, including the following steps:

[0087] The photoelectric conversion unit 231 receives a plurality of reflected light waves and converts the optical signals of the plurality of reflected light waves into a plurality of analog electrical signals;

[0088] The analog-to-digital conversion unit 232 receives a plurality of analog electrical signals and converts the plurality of analog electrical signals into a plurality of digital signals;

[0089] The control module 240 processes the plurality of digital signals to complete the identification of the plurality of optical splitter bodies 110 and the output branches.

[0090] Specifically, the identification method of the photoelectric processing module in the embodiment of the present invention corresponds to the photoelectric processing module in the embodiment of the present invention, and will not be elaborated here.

[0091] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0092] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0093] Those of ordinary skill in the art will understand that all or some of the steps and systems disclosed in the above methods can be implemented as software, firmware, hardware, and their appropriate combinations. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that a communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0094] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the relevant technical field, various changes can be made without departing from the spirit of the present invention.

Claims

1. A distinguishable optical splitter, characterized in that, Comprising: An optical splitter body, an input end of which is connected to a first optical fiber, and a plurality of output ends are respectively connected to a plurality of second optical fibers one by one; A plurality of first optical fiber codes are arranged on the first optical fiber. Each of the first optical fiber codes has a different distance from the optical splitter body, and each of the first optical fiber codes has a different wavelength; A plurality of second optical fiber codes are respectively arranged on the plurality of second optical fibers. The plurality of second optical fiber codes have different wavelengths and different setting distances between the plurality of second optical fiber codes. The wavelength of each second optical fiber code corresponds to the wavelength of each first optical fiber code one by one; A third optical fiber code is further arranged on each of the second optical fibers. The setting distance between each third optical fiber code and each second optical fiber code is different. The wavelength of each third optical fiber code corresponds to the wavelength of each second optical fiber code one by one. The wavelength of each third optical fiber code is different from the wavelength of the corresponding second optical fiber code. The setting distance between each third optical fiber code and the corresponding second optical fiber code is the same as the setting distance between the corresponding second optical fiber code and the optical splitter body; Each of the third optical fiber codes is used to ensure the distinguishable identification of the plurality of output ends of the optical splitter body.

2. A distinguishable and recognizable optical splitter topological network, characterized in that, Comprising a plurality of distinguishable identification optical splitters as described in claim 1, and the plurality of distinguishable identification optical splitters are connected to form a tree-like topological network structure.

3. An identification system for distinguishable recognition of a splitter topology network, characterized in that, Comprising: A light source module for outputting pulsed light waves of different wavelengths; A circulator includes a first port, a second port, and a third port. The first port is connected to the output end of the light source module; An optoelectronic processing module, an input end of which is connected to the third port; A control module is electrically connected to the light source module and the optoelectronic processing module respectively; A distinguishable identification optical splitter topology network as described in claim 2, an input end of which is connected to the second port.

4. The identification system for distinguishable and identifiable optical splitter topological networks according to claim 3, wherein, The optoelectronic processing module includes: An optoelectronic conversion unit, an input end of which is connected to the third port. The optoelectronic conversion unit is used to convert an optical signal into an electrical signal; An analog-to-digital conversion unit, an input end of which is connected to the output end of the optoelectronic conversion unit, and an output end of which is electrically connected to the control module.

5. A recognition method for a distinguishable optical splitter topological network, applied to the recognition system for a distinguishable optical splitter topological network according to any one of claims 3 and 4, characterized in that, Including the following steps: Outputting a plurality of different broadband pulsed light waves from the light source module to the circulator, and transmitting them to the plurality of first optical fiber codes and the plurality of second optical fiber codes in the distinguishable identification optical splitter topology network through the circulator; The circulator respectively receives a plurality of reflected light waves reflected by the plurality of first optical fiber codes and the plurality of second optical fiber codes; The optoelectronic processing module processes the plurality of reflected light waves so that the control module completes the identification of the plurality of optical splitter bodies and the output branches.

6. The recognition method of the distinguishable and identifiable spectrometer topology network according to claim 5, characterized in that, The optoelectronic processing module processes the plurality of reflected light waves so that the control module completes the identification of the plurality of optical splitter bodies and the output branches, including the following steps: The optoelectronic conversion unit receives the plurality of reflected light waves and converts the optical signals of the plurality of reflected light waves into a plurality of analog electrical signals; The analog-to-digital conversion unit receives a plurality of the analog electrical signals and converts the plurality of analog electrical signals into a plurality of digital signals; The control module processes the plurality of digital signals to complete the identification of the plurality of optical splitter bodies and output branches.

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