Hollow-core optical fiber gas purification method and device and electronic equipment

Abstract

The invention provides a hollow-core optical fiber gas purification method and device and electronic equipment, and the device comprises a high-pressure gas source which is used for providing purified gas with a set pressure value for a hollow-core optical fiber; the high-pressure end sealing air chamber comprises at least two connecting ends which are communicated with each other, one connecting end is connected with the high-pressure air source in a sealing manner, and the other connecting end is connected with the high-pressure end of the hollow-core optical fiber in a sealing manner; the low-pressure end sealing air chamber comprises at least two connecting ports which are communicated with each other, one connecting port is connected with the low-pressure end of the hollow-core optical fiber in a sealing manner, and the other connecting port is connected with an air extracting pump in a sealing manner; and the temperature control assembly is used for forming an axial decreasing temperature gradient from the high-pressure end to the low-pressure end of the hollow-core optical fiber, so that the purified gas replaces the gas in the hollow-core optical fiber. According to the device disclosed by the invention, the gas in the hollow-core optical fiber can be thoroughly removed, and the pure gas which cannot be absorbed in the near-infrared communication wave band is replaced, so that the transmission performance of the hollow-core optical fiber is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of transmission and bearer communication, and in particular to an air-core optical fiber gas purification method, device and electronic equipment. BACKGROUND

[0002] The air-core optical fiber is hollow inside, and the interaction between the light signal and the gas will occur when the light signal is transmitted therein. In the presence of certain gas components, additional absorption loss of the signal will occur in the communication band, thereby causing performance degradation. Therefore, it is necessary to carry out air-core optical fiber gas purification, that is, to remove impurities in the gas in the hollow structure of the air-core optical fiber by physical or chemical methods, to improve the gas purity and to improve the transmission performance of the air-core optical fiber. At present, there is no effective technology to replace and purify the gas in the air-core optical fiber. SUMMARY

[0003] In order to solve the problems existing in the above-mentioned technologies, the present application proposes an air-core optical fiber gas purification method, device, electronic equipment and storage medium.

[0004] The first aspect embodiment of the present disclosure proposes an air-core optical fiber gas purification device, comprising: a high-pressure gas source configured to provide a purification gas with a set pressure value to an air-core optical fiber; a high-pressure end sealed gas chamber comprising at least two connection ends in communication, and one of the connection ends is sealedly connected to the high-pressure gas source, and the other of the connection ends is sealedly connected to a high-pressure end of the air-core optical fiber; a low-pressure end sealed gas chamber comprising at least two connection ports in communication, and one of the connection ports is sealedly connected to a low-pressure end of the air-core optical fiber, and the other of the connection ports is sealedly connected to an air pump; and a temperature control assembly configured to form an axial decreasing temperature gradient from the high-pressure end to the low-pressure end of the air-core optical fiber, so that the purification gas replaces the gas in the air-core optical fiber.

[0005] In some embodiments of the present disclosure, the temperature control assembly comprises a heating module and a cooling module; the heating module is arranged outside the high-pressure end sealed gas chamber and / or near the high-pressure end section of the air-core optical fiber, and is configured to heat the gas; and the cooling module is arranged outside the low-pressure end sealed gas chamber and / or near the low-pressure end section of the air-core optical fiber, and is configured to cool the gas.

[0006] In some embodiments of the present disclosure, the device further comprises a gas pressure monitoring module integrated in the high-pressure end sealed gas chamber and the low-pressure end sealed gas chamber, respectively, and configured to real-time regulate the gas pressure gradient.

[0007] In some embodiments of the present disclosure, the pressure of the purification gas is not less than 1 times of the atmospheric pressure; And / or, the purification gas comprises nitrogen, monatomic noble gas or diatomic molecular noble gas; And / or, the purity of the purified gas is not less than 99.9999%.

[0008] In some embodiments of the present disclosure, the volume of the high-pressure end sealed gas chamber is greater than the hollow region volume of the hollow core optical fiber.

[0009] In some embodiments of the present disclosure, the high-pressure end gas temperature is at least 0℃ higher than the low-pressure end gas temperature.

[0010] In the above embodiments, the axial decreasing temperature gradient from the high-pressure end to the low-pressure end of the hollow core optical fiber and the complete removal of gas and moisture in the hollow core optical fiber by the air pump, while using the high-pressure gas source to exchange the inert gas into the hollow core optical fiber which does not absorb in the near-infrared communication wave band, improves the transmission performance of the hollow core optical fiber.

[0011] The second aspect embodiment of the present disclosure proposes a hollow core optical fiber gas purification method, comprising the following steps: After the high-pressure end sealed gas chamber and the low-pressure end sealed gas chamber are evacuated, the gas purification device in any one of the first aspect is assembled; The purified gas is introduced into the hollow core optical fiber until the high-pressure end sealed gas chamber reaches the set pressure range; the air pump is started until the low-pressure end sealed gas chamber reaches the set pressure range; The temperature control assembly is started to form an axial decreasing temperature gradient from the high-pressure end to the low-pressure end; The cycle is repeated multiple times until the purification is completed and the air pressure in the hollow core optical fiber is higher than the atmospheric pressure.

[0012] In some embodiments of the present disclosure, after the temperature control assembly is started, the temperature of the lowest temperature point of the hollow core optical fiber is greater than the dew point of the environment.

[0013] In some embodiments of the present disclosure, when the hollow core optical fiber appears water vapor, the cooling module is turned off.

[0014] In the above embodiments, after the high-pressure end sealed gas chamber and the low-pressure end sealed gas chamber are evacuated, the gas purification device in any one of the above embodiments is assembled; the purified gas with a set pressure value is introduced into the hollow core optical fiber until the pressure in the high-pressure end sealed gas chamber reaches the pressure value of the purified gas, the air pump is started until the pressure in the low-pressure end sealed gas chamber reaches the pressure value of the purified gas, and the temperature control assembly is further started to form an axial decreasing temperature gradient from the high-pressure end to the low-pressure end; the cycle is repeated multiple times until the purification is completed and the air pressure in the hollow core optical fiber is higher than the atmospheric pressure, so as to realize the purification of the air in the hollow core optical fiber while re-establishing the gas pressure environment in the hollow core optical fiber which is higher than the atmospheric pressure, thereby ensuring the stability and reliability of the communication quality.

[0015] The third aspect embodiment of the present disclosure proposes an electronic device, comprising: at least one processor; and a memory communicatively connected with the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method of any one of the second aspect.

[0016] In summary, according to the hollow core optical fiber gas purification method, device and electronic equipment provided by the present disclosure, the gas in the long-distance and extremely small cross-section size hollow core optical fiber can be completely removed, and the purified gas which will not be absorbed in the near-infrared communication wave band is filled in, so as to improve the transmission performance of the hollow core optical fiber. In addition, while the gas in the hollow core optical fiber is purified, the gas pressure environment higher than the atmospheric pressure in the hollow core optical fiber is re-established, so as to ensure that the hollow core optical fiber will not be filled with air in the case of open or broken end face, thereby ensuring the stability and reliability of the communication quality.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings incorporated in the specification and forming a part of it, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure without imposing undue limitation on the disclosure.

[0019] Figure 1 Structure schematic diagram of the hollow core optical fiber gas purification device provided by the embodiments of the present disclosure; Figure 2 Flowchart of the hollow core optical fiber gas purification method provided by the embodiments of the present disclosure; Figure 3 Structure schematic diagram of the electronic equipment provided by the embodiments of the present disclosure. DETAILED DESCRIPTION

[0020] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments are described below by referring to the accompanying drawings.

[0021] The hollow core optical fiber is hollow, and the light signal will interact with the gas when transmitting in the hollow core optical fiber. In the presence of certain gas components, additional absorption loss of the signal will occur in the communication wave band, and then performance deterioration will occur. Therefore, gas purification in the hollow core optical fiber is needed, that is, for the gas in the hollow structure of the hollow core optical fiber, impurities in the gas are removed by physical or chemical methods, and the gas purity is improved to improve the transmission performance of the hollow core optical fiber.

[0022] Hollow core fiber and hollow core fiber based optical communication system is an important part of future network tasks, and is considered as the basis of next generation optical communication. If hollow core fiber is widely used, how to realize the purification of the gas inside and ensure that it is not mixed with other harmful gases during use is an important factor affecting the application scenario of anti-resonant hollow core fiber and a decisive factor of the performance of the existing network link. Therefore, the gas purification method and device have high commercial value.

[0023] Since hollow core fiber is still a very new technology direction, how to completely remove the gas in the long distance and extremely small cross-sectional size hollow core fiber, and replace it with pure high-purity gas that will not cause absorption in the near-infrared communication band, there is no related technical record on the purification of the gas inside the hollow core fiber. In addition, how to ensure that the hollow core fiber is not refilled with air inside when the end face of the hollow core fiber is open or broken, so as to ensure the stability and reliability of the communication quality is also a technical problem to be further solved.

[0024] Therefore, the present disclosure proposes a hollow core fiber gas purification method, device and electronic equipment, which replaces the gas in the original hollow structure of the hollow core fiber with pure gas that will not absorb in the near-infrared communication band, and improves the transmission performance of the hollow core fiber, to solve the technical problem of the transmission performance degradation of the current hollow core fiber.

[0025] The hollow core fiber gas purification method of the present disclosure can be applied to the hollow core fiber gas purification device proposed by the present disclosure.

[0026] The hollow core fiber gas purification device and method provided by the present application will be described in detail below with reference to the accompanying drawings.

[0027] Figure 1 The structure diagram of the hollow core fiber gas purification device proposed by the present disclosure is shown. As Figure 1 shown, the gas purification device 100 includes a high-pressure gas source 101, a high-pressure end sealed gas chamber 102, a low-pressure end sealed gas chamber 104, a gas pump 105, and a temperature control assembly; wherein the inside of the hollow core fiber 103 is a cavity for optical signal transmission, which has the characteristics of long distance and extremely small cross-sectional size. In this embodiment, the hollow core fiber 103 has two open end faces in the length direction, and the length direction of the hollow core fiber 103 is consistent with the left and right directions in this embodiment.

[0028] As Figure 1 shown, the two open end faces of the hollow core fiber 103 in the left and right directions, in order to distinguish the open end face of the hollow core fiber 103, the end connected with the high-pressure end sealed gas chamber 102 is defined as the high-pressure end; at the same time, the end connected with the low-pressure end sealed gas chamber 104 is defined as the low-pressure end, as Figure 1As shown, the high-pressure end of the hollow-core optical fiber 103 is located to the left of the low-pressure end of the hollow-core optical fiber 103.

[0029] The high-pressure end sealed gas chamber 102 in this embodiment has good sealing and pressure resistance, and has at least two connections. In other words, the high-pressure end sealed gas chamber 102 includes at least two connected ends, one of which is sealed to the high-pressure gas source 101, and the other of which is sealed to the high-pressure end of the hollow-core optical fiber 103. For example, as shown in the figure, the high-pressure end sealed gas chamber 102 includes two connected ends, one of which is sealed to the high-pressure gas source 101, and the other of which is sealed to the high-pressure end of the hollow-core optical fiber 103. Figure 1 As shown, the high-pressure end sealed gas chamber 102 has an air inlet and an air outlet on the left and right sides, respectively, which are connected. The air inlet is connected to the high-pressure gas source 101 and has good sealing, and the air outlet is connected to the high-pressure end of the hollow-core optical fiber 103 and has good sealing.

[0030] In some embodiments of the present disclosure, the sealed connection between the high-pressure end sealed gas chamber 102 and the high-pressure gas source 101 and the sealed connection between the high-pressure end sealed gas chamber 102 and the high-pressure end of the hollow-core optical fiber 103 are provided with rubber sealing rings at the connection, and then to ensure good sealing, sealing glue can be applied outside the rubber sealing ring, and the glue can be heat-cured or ultraviolet-cured.

[0031] In some embodiments of the present disclosure, the high-pressure gas source 101 is used to provide the hollow-core optical fiber 103 with purified gas having a set pressure value. In other words, a gas valve is provided between the high-pressure gas source 101 and the high-pressure end sealed gas chamber 102, and the high-pressure gas source 101 can be connected to the hollow-core optical fiber 103 through the gas valve, and the high-pressure gas source 101 can pass the purified gas having a set pressure value into the hollow-core optical fiber 103.

[0032] In some embodiments of the present disclosure, the pressure of the high-pressure gas source 101 is not less than 1 times atmospheric pressure, and for example, the pressure of the high-pressure gas source 101 is 0.1 MPa-3 MPa; to ensure that the purified gas can smoothly pass through the high-pressure end sealed gas chamber 102 into the hollow-core optical fiber 103, and achieve gas replacement inside the hollow-core optical fiber 103.

[0033] It needs to be explained that the pressure of the high-pressure gas source 101 can be determined according to the parameters of the gas cylinder selected to contain the purified gas, that is, when the high-pressure gas source 101 connected to the high-pressure end sealed gas chamber 102 needs to have a pressure of 3 MPa, a gas cylinder containing purified gas and having a maximum allowable working pressure of 3 MPa can be selected to be connected to the high-pressure end sealed gas chamber 102.

[0034] In some embodiments of the present disclosure, the purified gas includes nitrogen, monatomic noble gas, or diatomic molecular noble gas; wherein the purified gas includes a gas that has no gas absorption phenomenon in the near-infrared light wave band, for example, the high-pressure gas source 101 includes nitrogen or argon, etc., and the purity of the nitrogen or argon is not less than 99.9999%, to ensure that new impurity gas is not introduced during the gas replacement process.

[0035] In some embodiments of the present disclosure, the volume of the high-pressure end sealed gas chamber 102 is greater than the volume of the hollow region of the hollow-core fiber 103.

[0036] The volume of the high-pressure end sealed gas chamber 102 should be greater than the volume of the hollow region in the purified fiber to ensure that the hollow region of the hollow-core fiber 103 can accommodate sufficient high-pressure purified gas.

[0037] In some embodiments of the present disclosure, the low-pressure end sealed gas chamber 104 in the present embodiment has good sealing and pressure resistance, and includes at least two connected ports in communication. In other words, the low-pressure end sealed gas chamber 104 includes at least two connected ports in communication, one of which is sealed and connected to the low-pressure end of the hollow-core fiber 103, and the other of which is sealed and connected to the gas extraction pump 105, as shown in Figure 1 As shown, the left and right sides of the low-pressure end sealed gas chamber 104 respectively have an air inlet port and an air outlet port in communication, wherein the air inlet port is in good sealing connection with the low-pressure end of the hollow-core fiber 103, and the air outlet port is connected to the gas extraction pump 105 and maintains good sealing.

[0038] In some embodiments of the present disclosure, the sealing connection between the low-pressure end sealed gas chamber 104 and the gas extraction pump 105 and the sealing connection between the low-pressure end sealed gas chamber 104 and the low-pressure end of the hollow-core fiber 103 are both provided with rubber sealing rings at the connection, and then to ensure good sealing, sealing glue can be applied outside the rubber sealing ring, and the glue can be heat-cured or ultraviolet-cured.

[0039] In the present embodiment, a gas valve is provided between the low-pressure end sealed gas chamber 104 and the gas extraction pump 105, and when the gas valve is opened and the gas extraction pump 105 is working, the hollow-core fiber 103 and the gas extraction pump 105 are in communication, and the gas in the hollow-core fiber 103 can be extracted by the gas extraction pump 105. In some embodiments, the gas extraction pump 105 can be a turbo molecular pump, which has the characteristics of high pumping speed and low back pressure, and can effectively extract the gas in the hollow-core fiber 103, forming a low-pressure region at the low-pressure end that is lower than the gas pressure in the hollow-core fiber 103, ensuring the formation of a pressure gradient with the high-pressure end. For example, the pressure difference between the high-pressure end and the low-pressure end of the hollow-core fiber 103 is 0.1 MPa-3 MPa.

[0040] In some embodiments of the present disclosure, the device further includes a gas pressure monitoring module integrated in the high-pressure end sealed gas chamber 102 and the low-pressure end sealed gas chamber 104, respectively, for real-time regulation of the gas pressure gradient.

[0041] The gas purification device 100 in the present application further comprises a gas pressure monitoring module integrated in the high-pressure end sealed gas chamber 102 and the low-pressure end sealed gas chamber 104, respectively, which can be used to monitor the pressure in the high-pressure end sealed gas chamber 102 and the low-pressure end sealed gas chamber 104, respectively, to regulate the gas pressure gradient between the high-pressure end sealed gas chamber 102 and the low-pressure end sealed gas chamber 104 in real time.

[0042] In some embodiments of the present disclosure, the temperature control assembly is used to form an axial decreasing temperature gradient from the high-pressure end to the low-pressure end to facilitate the gas replacement in the hollow core optical fiber 103. In other words, the temperature control assembly in the present application heats the high-pressure end of the hollow core optical fiber 103 while cooling the low-pressure end of the hollow core optical fiber 103, forming an axial decreasing temperature gradient from the high-pressure end to the low-pressure end, i.e., the temperature gradually decreases from the high-pressure end to the low-pressure end of the hollow core optical fiber 103, to ensure that the gas inside the hollow core optical fiber 103 can sufficiently obtain internal energy to increase activity intensity and form a gradient pressure, facilitating the extraction to facilitate the gas replacement in the hollow core optical fiber 103.

[0043] In some embodiments of the present disclosure, the temperature control assembly comprises a heating module 106 and a cooling module 107 which are independently controlled; the heating module 106 is arranged outside the high-pressure end sealed gas chamber 102 and / or near the high-pressure end of the hollow core optical fiber 103, and is used to heat the gas; and the cooling module 107 is arranged outside the low-pressure end sealed gas chamber 104 and / or near the low-pressure end of the hollow core optical fiber 103, and is used to cool the gas.

[0044] In some embodiments of the present disclosure, the temperature control assembly comprises a heating module 106 and a cooling module 107 which are independently controlled; the heating module 106 is arranged outside the high-pressure end sealed gas chamber 102 and / or near the high-pressure end of the hollow core optical fiber 103, and is used to heat the gas; and the cooling module 107 is arranged outside the low-pressure end sealed gas chamber 104 and / or near the low-pressure end of the hollow core optical fiber 103, and is used to cool the gas.

[0045] In the embodiment, the temperature of the gas in the hollow core fiber 103 gradually decreases from the high pressure end to the low pressure end, so as to ensure that the gas in the hollow core fiber 103 can sufficiently obtain internal energy to increase activity intensity and form a gradient pressure. In some embodiments of the present disclosure, the temperature of the gas at the high pressure end is at least 0°C higher than the temperature of the gas at the low pressure end. In the embodiment, the pressure of the gas is accurately controlled by the setting of the gas pressure monitoring module, the pressure gradient established by the high pressure gas source 101 and the air pump 105, and the cooperation of the heating module 106 and the cooling module 107, so as to ensure that the pressure of the gas in the hollow core fiber 103 is stable and not lower than atmospheric pressure, avoid the re-entry of air into the hollow core fiber, enhance the sealing performance of the hollow core fiber, and improve the long-term stability and reliability of the hollow core fiber.

[0046] In addition, according to the above content, it can be known that the pressure gradient between the high pressure end and the low pressure end of the hollow core fiber 103 can be established by the high pressure gas source 101 and the air pump 105, so as to enable the purified gas to be filled into the hollow core fiber 103. The high pressure end and the low pressure end of the hollow core fiber 103 are heated by the heating module 106 and the cooling module 107 respectively, so as to increase the pressure difference between the high pressure end and the low pressure end. This can not only promote the extraction and replacement of the gas in the hollow core fiber 103, but also enable the heating module 106 to provide energy to the polar molecules such as water molecules in the hollow core fiber 103. The polar molecules in the hollow core fiber 103 obtain free energy and are extracted together with the gas in the hollow core fiber 103 by the air pump 105. However, in this process, the pressure of the low pressure end of the hollow core fiber 103 is reduced as much as possible. However, in the case that there is water vapor in the hollow core fiber 103, the cooling module 107 should be closed to stop cooling the low pressure end, and the lowest temperature point of the hollow core fiber 103 should be above the dew point of the environment, so as to prevent liquid accumulation in the hollow core fiber 103 and reduce the stability and reliability of the communication quality.

[0047] In some embodiments, whether there is liquid accumulation in the hollow core fiber 103 can be observed by an optical microscope. Specifically, the near high pressure end and the near low pressure end of the hollow core fiber 103 can be observed by a magnifying glass, and whether there is liquid accumulation in the near low pressure end can be determined. In addition, when the high pressure end and the low pressure end of the hollow core fiber 103 are sealed, the loss of the hollow core fiber 103 can be monitored to determine whether there is liquid accumulation. For example, the optical power of the hollow core fiber 103 and the optical power measured at the output end of the hollow core fiber 103 are measured, the loss is calculated by calculating the ratio of the two, which is a conventional technical means in the art and will not be described in detail. The second aspect of the present disclosure provides a method for purifying gas in a hollow core fiber, as shown in Figure 2 , comprising the following steps: S201: assembling the gas purification device of any one of the first aspect after the high pressure end sealed gas chamber and the low pressure end sealed gas chamber are evacuated; S202: the purified gas is introduced into the hollow core optical fiber until the high-pressure end sealed gas chamber reaches the set pressure range; the gas pump is started until the low-pressure end sealed gas chamber reaches the set pressure range; S203: the temperature control assembly is started to form an axial decreasing temperature gradient from the high-pressure end to the low-pressure end; S204: the cycle is repeated multiple times until the purification is completed, while the air pressure in the hollow core optical fiber is kept higher than the atmospheric pressure.

[0048] In step S201, the original gas in the high-pressure end sealed gas chamber and the low-pressure end sealed gas chamber is first pumped out by the gas pump to maintain a near-vacuum or vacuum state, and then it can be selected whether to fill in the purified gas with a set pressure value, wherein the purified gas with a set pressure value is the gas of the first aspect of the application. Then the gas purification device according to any one of the first aspect of the application is assembled to obtain Figure 1 The gas purification device is shown, and the sealing between the components is ensured during connection.

[0049] In step S202, the gas valve between the high-pressure gas source and the high-pressure end sealed gas chamber is opened to realize the conduction of the high-pressure gas source and the hollow core optical fiber, and the reading of the integrated gas pressure monitoring module such as the pressure gauge on the high-pressure end sealed gas chamber is observed until the pressure in the high-pressure end sealed gas chamber reaches the set range, for example, the pressure in the high-pressure end sealed gas chamber is 0.1-3MPa; then the gas valve between the gas pump and the low-pressure end sealed gas chamber is opened, the gas pump is started, and the reading of the integrated gas pressure monitoring module such as the pressure gauge on the low-pressure end sealed gas chamber is observed until the pressure in the low-pressure end sealed gas chamber reaches the set range, for example, the pressure in the low-pressure end sealed gas chamber is 0.1-3MPa, and the pressure difference between the high-pressure end and the low-pressure end of the hollow core optical fiber is not less than 0.1MPa.

[0050] In step S203, the high-pressure end of the hollow core optical fiber is heated by the heating module, and at the same time, the hollow core optical fiber is cooled to a set temperature range by the cooling module, so that the low-pressure end gas pressure is sufficiently reduced. In the case of water vapor existing in the hollow core optical fiber, the cooling module should be closed, and the temperature of the lowest temperature point of the hollow core optical fiber should be greater than the dew point of the environment, i.e. the lowest temperature point of the hollow core optical fiber is above the dew point of the environment. In this step, the gas temperature gradually decreases from the high-pressure end to the low-pressure end to ensure that the gas in the hollow core optical fiber can fully obtain internal energy to increase activity and form a gradient pressure, which facilitates removal. In this step, the purified gas is injected into the hollow core optical fiber by the high-pressure gas source to push the removal of the gas in the hollow core optical fiber, realize gas replacement, and completely remove the original gas in the hollow core optical fiber, ensure the thoroughness of gas replacement, and establish an air pressure environment in the hollow core optical fiber not lower than the atmospheric pressure to avoid air re-entering the optical fiber.

[0051] The gas in step S204 is repeatedly purified, i.e., S201-S203 are repeated, to further improve the purity of the gas in the hollow core optical fiber. In this process, the purification effect of each repetition of S201-S203 can be detected by spectroscopy to ensure the completeness of the gas replacement and avoid impurity gas absorbing signal light, causing signal attenuation or selective fading, and improve transmission quality.

[0052] Therefore, the present application solves the problems of incomplete gas replacement, insufficient gas purity, difficult gas pressure control and complex operation in the prior art, realizes the gas purification process of the hollow core optical fiber, reduces the operation difficulty and cost, improves the operation simplicity, and is conducive to large-scale application.

[0053] The present application completely removes the original gas in the hollow core optical fiber, ensures the completeness of the gas replacement, avoids impurity gas absorbing signal light, causes signal attenuation or selective fading, and improves transmission quality. At the same time, the present application accurately controls the pressure of the gas in the hollow core optical fiber, ensures that the gas pressure is stable and will not be lower than atmospheric pressure, avoids air re-entering the optical fiber, enhances the sealing of the optical fiber, and improves the long-term stability and reliability of the optical fiber.

[0054] In summary, the present application provides an effective gas replacement and purification technical solution, which can significantly improve the communication performance and reliability of the hollow core optical fiber, and is suitable for large-scale application in the communication field.

[0055] A third aspect of the present disclosure provides an electronic device, comprising: Figure 3 as shown in the figure, comprising: at least one processor; and a memory in communication with the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method of any one of the second aspect.

[0056] According to the embodiments of the present application, the present application also provides an electronic device. Figure 3 A schematic block diagram of an example electronic device 300 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smart phones, wearable devices, and other similar computing devices. The components shown in the figure, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0057] AsFigure 3 As shown, the device 300 includes a computing unit 301 that can perform various appropriate actions and processes in accordance with a computer program stored in a ROM (Read-Only Memory) 302 or a computer program loaded into a RAM (Random Access Memory) 303 from a storage unit 308. Various programs and data required for the operation of the device 300 can also be stored in the RAM 303. The computing unit 301, the ROM 302, and the RAM 303 are connected to each other through a bus 304. An I / O (Input / Output) interface 305 is also connected to the bus 304.

[0058] Various components in the device 300 are connected to the I / O interface 305, including an input unit 306, such as a keyboard, a mouse, and the like; an output unit 307, such as various types of displays, speakers, and the like; a storage unit 308, such as a magnetic disk, an optical disk, and the like; and a communication unit 309, such as a network card, a modem, a wireless communication transceiver, and the like. The communication unit 309 allows the device 300 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0059] The computing unit 301 can be various general and / or special purpose processing components with processing and computing capabilities. Some examples of the computing unit 301 include, but are not limited to, a CPU (Central Processing Unit), a GPU (Graphic Processing Unit), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, a DSP (Digital Signal Processor), and any appropriate processor, controller, microcontroller, and the like. The computing unit 301 performs various methods and processes described above, such as the hollow core optical fiber gas purification method. For example, in some embodiments, the hollow core optical fiber gas purification method can be implemented as a computer software program that is tangibly embodied in a machine-readable medium, such as the storage unit 308. In some embodiments, part or all of the computer program can be loaded and / or installed on the device 300 via the ROM 302 and / or the communication unit 309. When the computer program is loaded into the RAM 303 and executed by the computing unit 301, one or more steps of the methods described above can be performed. Alternatively, in other embodiments, the computing unit 301 can be configured to perform the aforementioned hollow core optical fiber gas purification method by any other appropriate means, such as by means of firmware.

[0060] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a Field Programmable Gate Array (FPGA), an Application-Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a System on a Chip (SOC), a Complex Programmable Logic Device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0061] Program code for carrying out methods of the present application can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the program code, when executed by the processor or controller, produces a means for implementing the functions / acts specified in the flowcharts and / or block diagrams. The program code can be executed entirely on a machine, partially on a machine, partially on a machine and partially on a remote machine or entirely on a remote machine or server.

[0062] In the context of this application, a machine-readable medium can be a tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include but is not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, RAM, ROM, EPROM (Electrically Programmable Read-Only-Memory), or flash memory, an optical fiber, a CD-ROM (Compact Disc Read-Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0063] To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0064] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, and a blockchain network.

[0065] The computer system can include clients and servers. This relationship can be

[0066] It should be noted that artificial intelligence is a discipline that studies enabling computers to simulate some thinking processes and intelligent behaviors (such as learning, reasoning, thinking, planning, etc.) of human beings, and has both hardware and software technologies. Artificial intelligence hardware technology generally includes technologies such as sensors, special artificial intelligence chips, cloud computing, distributed storage, big data processing, etc.; artificial intelligence software technology mainly includes computer vision technology, speech recognition technology, natural language processing technology, and machine learning / deep learning, big data processing technology, knowledge graph technology, etc. several directions.

[0067] It should be understood that the steps shown above can be reordered, added, or deleted using various forms of flow. For example, each step described in the present disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in the present application can be achieved, and the present disclosure is not limited herein.

[0068] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A hollow optical fiber gas purification device, characterized in that, include: High-pressure gas source, used to supply purified gas with a set pressure value to hollow optical fibers; A high-pressure end sealing gas chamber includes at least two communicating connection ends, one of the connection ends being sealed to the high-pressure gas source, and the other connection end being sealed to the high-pressure end of the hollow optical fiber. A low-pressure end sealing chamber includes at least two communicating connection ports, one of which is sealed to the low-pressure end of the hollow optical fiber, and the other connection port is sealed to a vacuum pump; and A temperature control component is used to form an axially decreasing temperature gradient from the high-pressure end to the low-pressure end of the hollow optical fiber, so as to displace the gas inside the hollow optical fiber with the purified gas.

2. The gas purification apparatus according to claim 1, characterized in that, The temperature control component includes a heating module and a cooling module; the heating module is located outside the high-pressure sealed gas chamber and / or near the high-pressure end of the hollow optical fiber, and is used to heat the gas; the cooling module is located outside the low-pressure sealed gas chamber and / or near the low-pressure end of the hollow optical fiber, and is used to cool the gas.

3. The gas purification apparatus according to claim 1 or 2, characterized in that, It also includes a pressure monitoring module, which is integrated into the high-pressure end sealed air chamber and the low-pressure end sealed air chamber respectively, for real-time control of the pressure gradient at the high-pressure end and the low-pressure end of the hollow optical fiber.

4. The gas purification apparatus according to claim 3, characterized in that, The pressure of the purified gas is not less than 1 atmosphere; And / or, the purified gas includes nitrogen, monatomic rare gases, or diatomic rare gases; And / or, the purity of the purified gas is not less than 99.9999%.

5. The gas purification apparatus according to claim 3, characterized in that, The volume of the high-pressure end sealed gas chamber is greater than the volume of the hollow region of the hollow optical fiber.

6. The gas purification apparatus according to claim 3, characterized in that, The high-pressure end gas temperature is at least 0°C higher than the low-pressure end gas temperature.

7. A method for purifying gas in hollow optical fibers, characterized in that, Includes the following steps: The gas purification device according to any one of claims 1-6 is assembled by evacuating the high-pressure end sealing gas chamber and the low-pressure end sealing gas chamber; Purified gas is introduced into the hollow optical fiber until the high-pressure end sealed gas chamber reaches the set pressure range; the vacuum pump is started until the low-pressure end sealed gas chamber reaches the set pressure range. The temperature control component is activated to form an axially decreasing temperature gradient from the high-pressure end to the low-pressure end; The process is repeated multiple times until purification is complete and the air pressure inside the hollow fiber is maintained above atmospheric pressure.

8. The gas purification method according to claim 7, characterized in that, After the temperature control component is activated, the temperature of the lowest point in the hollow optical fiber is higher than the dew point of the environment.

9. The gas purification method according to claim 7, characterized in that, When moisture appears in the hollow optical fiber, the cooling module is turned off.

10. An electronic device, comprising: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 7-9.

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