Dispersion regulation and control method and apparatus, device, storage medium, and program product

Abstract

A dispersion regulation and control method and apparatus, a device, a storage medium, and a program product. The dispersion regulation and control method comprises: on the basis of a target wavelength and a target dispersion adjustment amount, selecting a micro / nano fiber having a preset diameter and a preset length, wherein two ends of the micro / nano fiber are seamlessly connected to conventional fibers, respectively; and under the condition that the two ends of the micro / nano fiber are fixed to support elements, adjusting the distance between the support elements at the two ends of the micro / nano fiber to perform a stretching operation on the micro / nano fiber, so as to implement dispersion regulation and control.

Description

Dispersion control method, device, equipment, storage medium and program product

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202311808849.7, filed on December 26, 2023, entitled “Dispersion Control Method, Device, Equipment, Storage Medium and Program Product,” the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the field of optical fiber communication technology, and in particular to a dispersion control method, apparatus, device, storage medium, and program product. Background Art

[0004] Different frequency components or different mode components of the signal in the optical fiber propagate at different speeds, causing signal distortion after reaching a certain distance. This phenomenon is called optical fiber dispersion.

[0005] Dispersion affects the formation and dynamic evolution of femtosecond pulses, significantly impacting pulse timing jitter. Furthermore, dispersion can cause pulse broadening, reducing peak power, thus limiting high-peak-power applications.

[0006] Therefore, how to achieve optical fiber dispersion control has become a technical problem that needs to be solved urgently. Summary of the Invention

[0007] Based on this, it is necessary to provide a dispersion control method, device, equipment, storage medium and program product to address the above technical problems, so as to achieve in-situ, online, precise and dynamic full-fiber dispersion control.

[0008] In a first aspect, the present application provides a dispersion control method, comprising:

[0009] According to the target wavelength and the target dispersion adjustment amount, a micro-nano optical fiber with a preset diameter and a preset length is selected; both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers;

[0010] Corresponding to the situation where both ends of the micro-nano optical fiber are fixed on the supporting elements, the micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control.

[0011] In one embodiment, the micro-nano optical fiber is stretched by adjusting the spacing between support elements at both ends of the micro-nano optical fiber to achieve dispersion control, including:

[0012] Determining a target stretching amount of the micro-nano optical fiber based on a target wavelength, a target dispersion adjustment amount, a preset diameter, and a preset length;

[0013] By controlling the stretching device to adjust the distance between the supporting elements at both ends of the micro-nano optical fiber, the micro-nano optical fiber is stretched until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0014] In one embodiment, the stretching device includes an electrically controlled translation stage or an actuator.

[0015] In one embodiment, the method further comprises:

[0016] Corresponding to the situation where multiple micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to supporting elements, each micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of each micro-nano optical fiber to achieve dispersion control.

[0017] In one embodiment, the cascading method of the plurality of micro-nano optical fibers includes any one of fiber fusion splicing, fiber fusion taper, or mode adapter.

[0018] In one embodiment, both ends of the micro-nano optical fiber are fixed to the supporting element by fastening elements.

[0019] In one embodiment, the fastening element includes an optical fiber fixing clamp or curing glue.

[0020] In one embodiment, the micro-nano optical fiber is placed in a retractable optical fiber packaging device.

[0021] In one embodiment, the conventional optical fiber includes any one of single-mode optical fiber, single-mode polarization-maintaining optical fiber, double-clad optical fiber, triple-clad optical fiber or multimode optical fiber. Optionally, the micro-nano optical fiber is drawn from a conventional optical fiber.

[0022] In one embodiment, both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers through a tapered transition zone.

[0023] In one embodiment, the selecting of a micro-nano optical fiber of a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount includes: selecting the micro-nano optical fiber of the preset diameter and the preset length that matches the target wavelength and the target dispersion adjustment amount according to a mapping relationship between the target wavelength and the target dispersion adjustment amount and the preset diameter and the preset length.

[0024] In a second aspect, the present application also provides a dispersion control device, comprising: an optical fiber selection module and a dispersion control module.

[0025] The optical fiber selection module is used to select a micro-nano optical fiber with a preset diameter and preset length according to the target wavelength and the target dispersion adjustment amount; both ends of the micro-nano optical fiber are continuously connected to the ordinary optical fiber;

[0026] The dispersion control module is used to achieve dispersion control by stretching the micro-nano optical fiber by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber.

[0027] In a third aspect, embodiments of the present application further provide a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of any embodiment of the first aspect.

[0028] In a fourth aspect, embodiments of the present application further provide a non-volatile computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the embodiments of the first aspect above.

[0029] In a fifth aspect, embodiments of the present application further provide a computer program product, comprising executable instructions, which, when executed by a processor, implement the steps of any one of the embodiments of the first aspect.

[0030] The above-mentioned dispersion control method, apparatus, device, storage medium, and program product select a micro-nano optical fiber of a preset diameter and length based on a target wavelength and a target dispersion adjustment amount. The two ends of the micro-nano optical fiber are continuously connected to a conventional optical fiber. With both ends of the micro-nano optical fiber fixed to support elements, the micro-nano optical fiber is stretched by adjusting the spacing between the support elements at both ends of the micro-nano optical fiber to achieve dispersion control. In this method, since the diameter and length of the micro-nano optical fiber vary, its dispersion also varies. Thus, the dispersion can be controlled by stretching the micro-nano optical fiber to change its length and diameter. Specifically, a micro-nano optical fiber of appropriate diameter and length is selected, and then further stretched to change its length and diameter, thereby changing the dispersion amount and achieving the dispersion control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] FIG1 is a diagram showing the internal structure of a computer device according to an embodiment of the present application;

[0033] FIG2 is a schematic flow chart of a dispersion control method according to an embodiment of the present application;

[0034] FIG3 is a schematic diagram of a micro-nano optical fiber according to an embodiment of the present application;

[0035] FIG4 is a schematic diagram of dispersion curves of unstretched micro-nano optical fibers of different diameters in one embodiment of the present application;

[0036] FIG5 is a schematic diagram of a process for implementing dispersion control in one embodiment of the present application;

[0037] FIG6 is a schematic diagram of a portion of a dispersion control device according to an embodiment of the present application;

[0038] FIG7 is a schematic diagram of group delay dispersion of a 20 cm long and 0.4 μm diameter silica micro-nano optical fiber at different stretching amounts in one embodiment of the present application;

[0039] FIG8 is a schematic diagram of group delay dispersion of a 20 cm long and 0.8 μm diameter silica micro-nano optical fiber at different stretching amounts in one embodiment of the present application;

[0040] FIG9 is a schematic diagram of group velocity dispersion and group delay dispersion of a standard single-mode optical fiber at different stretching amounts in one embodiment of the present application;

[0041] FIG10 is a schematic diagram showing the tensile forces required for a 0.8 μm diameter micro-nano optical fiber and a conventional single-mode optical fiber under different strains in one embodiment of the present application;

[0042] FIG11 is a schematic diagram of two micro-nano optical fibers cascaded in one embodiment of the present application;

[0043] FIG12 is a schematic flow chart of a dispersion control method according to another embodiment of the present application;

[0044] FIG13 is a schematic diagram of the structure of a dispersion control device in one embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0046] The dispersion control method provided in the embodiments of the present application can be applied to a computer device. The computer device can be a server, and its internal structure diagram can be shown in Figure 1. The computer device includes a processor, memory, an input / output (I / O) interface, and a communication interface. The processor, memory, and I / O interface are connected via a system bus, and the communication interface is connected to the system bus via the I / O interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The database of the computer device is used to store dispersion control data. The I / O interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via a network connection. When executed by the processor, the computer program implements a dispersion control method. Those skilled in the art will understand that the structure shown in FIG1 is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0047] Ultrashort pulse dispersion is crucial for optical ultrashort pulse generation, chirp compensation, transmission, and optical nonlinear processes. Rapid, precise, in-situ, dynamic, and reversible control of dispersion is crucial for reducing the complexity of laser systems and improving their stability and reliability.

[0048] In related technologies, commonly used dispersion control methods include free space method and optical fiber control method.

[0049] Free-space methods, including dispersion prisms, free-space gratings, and Gires-Tournois interferometers, can provide variable dispersion control for different applications and are widely used in free-space femtosecond lasers and femtosecond chirped amplifiers. However, the introduction of components such as dispersion prisms and free-space gratings in free-space methods disrupts the all-fiber structure, resulting in disadvantages in terms of size, weight, stability, and adjustment complexity.

[0050] Fiber control methods are achieved by selecting different types and lengths of optical fiber and chirped fiber Bragg gratings with different parameters. Since the dispersion of optical fiber is fixed, fiber control requires gradually changing the fiber length or replacing it with a fiber with different dispersion characteristics. The control is irreversible and non-in-situ. Chirped fiber Bragg gratings can provide very high dispersion values ​​at a shorter length, but their bandwidth, dispersion, and insertion loss are mutually restricted. More importantly, the relative control of their dispersion value is relatively small, and it must be achieved by changing the grating temperature distribution, which is slow. In addition, chirped fiber Bragg gratings often need to be used in conjunction with a fiber circulator, which will introduce greater insertion loss and may also lead to degradation of available bandwidth and power tolerance.

[0051] Therefore, it is necessary to provide a fast, accurate, in-situ, dynamic, and reversible all-fiber dispersion control method.

[0052] Based on this, an embodiment of the present application provides a dispersion control method. Since the diameter and length of the micro-nano optical fiber are different, its dispersion is also different. In this way, the dispersion can be controlled by changing the length and diameter of the micro-nano optical fiber. That is, a micro-nano optical fiber with a suitable diameter and length is selected, and on this basis, the micro-nano optical fiber is further stretched to change the length and diameter of the micro-nano optical fiber, thereby changing the dispersion amount and achieving the effect of dispersion control.

[0053] It should be noted that the beneficial effects or technical problems solved by the embodiments of the present application are not limited to this one, but may also include other implicit or related problems. For details, please refer to the description of the following embodiments.

[0054] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0055] In an exemplary embodiment, as shown in FIG2 , a dispersion control method is provided. The method is described by taking the application of the method to a computer device as an example, and includes the following steps 201 to 202 .

[0056] Step S201: Select a micro-nano optical fiber with a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount.

[0057] Among them, the two ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers.

[0058] Micro-nano optical fiber refers to a waveguide with a diameter close to or smaller than the wavelength of the transmitted light. It is made by physical stretching methods and has the characteristics of smooth surface, good diameter uniformity, high mechanical properties, strong light field confinement, strong evanescent field, surface field enhancement effect and anomalous waveguide dispersion.

[0059] The micro-nano optical fiber can be drawn from an ordinary optical fiber. Optionally, the ordinary optical fiber includes any one of single-mode optical fiber, single-mode polarization-maintaining optical fiber, double-clad optical fiber, triple-clad optical fiber or multimode optical fiber.

[0060] Ordinary optical fibers can be produced through flame heating and stage stretching to form micro-nano optical fibers, ultimately consisting of ordinary optical fibers, micro-nano optical fibers, and a tapered transition zone. Figure 3 is a schematic diagram of a micro-nano optical fiber in one embodiment of the present application, where ① is an ordinary optical fiber; ② is a micro-nano optical fiber; and ③ is a tapered transition zone. The two ends of micro-nano optical fiber ② are connected to the ordinary optical fiber ① through the tapered transition zone ③.

[0061] Different wavelengths and different dispersion adjustment amounts correspond to different micro-nano optical fiber diameters and lengths. In the embodiment of the present application, the database stores a mapping relationship between different wavelength information, different dispersion adjustment amounts, and the preset diameters and preset lengths of micro-nano optical fibers (micro-nano optical fibers drawn from ordinary optical fibers).

[0062] Based on the above mapping relationship, the preset diameter and preset length of the micro-nano optical fiber can be determined.

[0063] Exemplarily, the preset diameter and preset length of the micro-nano optical fiber can be determined by obtaining a mapping relationship between different wavelengths, different dispersion adjustment amounts and the preset diameter and preset length of the micro-nano optical fiber from a database, and then obtaining a preset length and preset diameter that match the target wavelength and target dispersion adjustment amount from the above mapping relationship based on the target wavelength and target dispersion adjustment amount.

[0064] In step S202 , corresponding to the case where both ends of the micro-nano optical fiber are fixed to the supporting elements, the micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control.

[0065] In practical applications, the dispersion of micro-nano optical fibers varies depending on their diameter. Figure 4 shows a schematic diagram of the dispersion curves of unstretched micro-nano optical fibers of different diameters in one embodiment of the present application. This shows that for light of a specific wavelength, when the micro-nano optical fiber is stretched, in addition to its length, its diameter also changes, causing a change in its dispersion. Based on this, in the embodiments of the present application, by stretching the micro-nano optical fiber, the diameter and length of the micro-nano optical fiber are changed, thereby changing the dispersion amount and achieving the effect of dispersion control.

[0066] Based on the micro-nano optical fiber with the preset diameter and preset length selected above, dispersion control can be achieved by stretching the micro-nano optical fiber.

[0067] For example, both ends of the micro-nano optical fiber are fixed to a support element, and the spacing between the support elements at both ends of the micro-nano optical fiber is adjusted using a movable device to stretch the micro-nano optical fiber. When the micro-nano optical fiber reaches a target stretch, dispersion control is achieved. The two ends of the micro-nano optical fiber can be fixed to the support element by fixing the tapered transition region connecting the two ends of the micro-nano optical fiber to the support element, or by fixing the conventional optical fibers at both ends of the micro-nano optical fiber to the support element.

[0068] It should be noted that in the embodiment of the present application, the dispersion of the optical fiber is controlled by changing the length and diameter of the micro-nano optical fiber. That is, in the present application, the dispersion can be controlled only by stretching, without introducing other optical components into the system, and the full optical fiber structure of the ordinary optical fiber will not be destroyed. Moreover, the micro-nano optical fiber and the ordinary optical fiber are continuously connected through the tapered transition zone, and the insertion loss can be almost ignored. Therefore, the embodiment of the present application provides a fast, in-situ, dynamic full-fiber low-insertion-loss dispersion control method.

[0069] In the dispersion control method provided in the embodiment of the present application, a micro-nano optical fiber of a preset diameter and preset length is selected based on the target wavelength and the target dispersion adjustment amount. The two ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers. Then, when both ends of the micro-nano optical fiber are fixed to the support elements, the micro-nano optical fiber is stretched by adjusting the spacing between the support elements at both ends of the micro-nano optical fiber to achieve dispersion control. In this method, since the diameter and length of the micro-nano optical fiber are different, its dispersion is also different. In this way, the dispersion can be controlled by changing the length and diameter of the micro-nano optical fiber. That is, a micro-nano optical fiber of appropriate diameter and length is selected, and on this basis, the micro-nano optical fiber is further stretched to change the length and diameter of the micro-nano optical fiber, thereby changing the dispersion amount and achieving the effect of dispersion control.

[0070] By varying the diameter and length of a micro-nano optical fiber, dispersion control can be achieved. However, determining the diameter and length to which a micro-nano optical fiber should be stretched to achieve dispersion control of a target conventional optical fiber requires a certain basis. Therefore, in one exemplary embodiment, as shown in FIG5 , dispersion control is achieved by stretching the micro-nano optical fiber by adjusting the spacing between the supporting elements at both ends of the micro-nano optical fiber, including steps 301 and 302.

[0071] Step S301: determining a target stretching amount of the micro-nano optical fiber according to a target wavelength, a target dispersion adjustment amount, a preset diameter, and a preset length.

[0072] The amount of micro-nano optical fiber stretching is related to the wavelength, dispersion adjustment amount, initial diameter and initial length of the micro-nano optical fiber. In the embodiment of the present application, the database stores the mapping relationship between different wavelengths, different dispersion adjustment amounts, different initial diameters and initial lengths of the micro-nano optical fiber.

[0073] Based on the above mapping relationship, the target stretching amount of the micro-nano optical fiber that can meet the dispersion control requirements can be determined.

[0074] Exemplarily, determining the stretching amount of the micro-nano optical fiber to meet the dispersion control requirements can be done by obtaining a mapping relationship between different wavelengths, different dispersion adjustment amounts, different micro-nano optical fiber initial diameters and initial lengths from a database, and then obtaining a target stretching amount that matches the target wavelength, target dispersion adjustment amount, and the above-mentioned micro-nano optical fiber preset diameter and preset length from the above-mentioned mapping relationship.

[0075] Step S302: Controlling the stretching device to adjust the spacing between the support elements at both ends of the micro-nano optical fiber, stretching the micro-nano optical fiber until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0076] In the embodiments of the present application, the stretching device refers to a device for stretching the micro-nano optical fiber. In one embodiment, the stretching device includes an electrically controlled displacement stage or an actuator.

[0077] Both ends of the micro-nano optical fiber are fixed to the support element, requiring appropriate optical fiber fixing equipment. In one embodiment, the two ends of the micro-nano optical fiber are fixed to the support element by fastening elements. The fastening elements include optical fiber fixing clamps or curing adhesive.

[0078] During the stretching process of the micro-nano optical fiber, in order to ensure that the micro-nano optical fiber portion is not contaminated by dust and air, the micro-nano optical fiber needs to be protected. In one embodiment, the micro-nano optical fiber is placed in a retractable optical fiber packaging device.

[0079] Based on the above device, stretching the micro-nano optical fiber can achieve dispersion control. Figure 6 is a schematic diagram of part of the dispersion control device, where ④ is the support element; ⑤ is the fastening element; and ⑥ is the stretchable packaging device.

[0080] In practical applications, by adjusting the spacing between the supporting elements ④ at both ends of the micro-nano optical fiber ② through a stretching device, the micro-nano optical fiber ② can be stretched within the range of elastic deformation, thereby simultaneously changing the length and diameter of the micro-nano optical fiber ②, and further changing the dispersion of the micro-nano optical fiber ②. When the stretching amount of the micro-nano optical fiber ② reaches the target stretching amount, the dispersion control is completed.

[0081] It should be noted that the displacement resolution of the stretching device in the embodiments of this application can be as low as 1 micron, thus enabling precise control of dispersion. Furthermore, the theoretical elastic deformation of the micro-nano optical fiber can reach 10%. Therefore, within the elastic deformation range, the dispersion control method by stretching the micro-nano optical fiber is reversible.

[0082] For dispersion control, the dispersion adjustment amount is a key parameter. This is largely determined by the stretched length of the micro-nano fiber. For micro-nano fibers made of silica, the maximum elastic strain over length is approximately 10%, while the diameter variation is approximately 2%. Based on these parameters, as well as the initial length, initial diameter, and operating wavelength of the micro-nano fiber, the dispersion control range for different micro-nano fibers can be calculated.

[0083] Figure 7 is a schematic diagram of the group delay dispersion of a 20 cm long, 0.4 μm diameter silica micro-nano fiber at different stretching amounts in one embodiment of the present application. Figure 8 shows the calculated group delay dispersion results of a 20 cm long, 0.8 μm diameter silica micro-nano fiber at different stretching amounts. For comparison, Figure 9 is a schematic diagram of the group velocity dispersion and group delay dispersion of a standard single-mode fiber at different stretching amounts in one embodiment of the present application. It can be seen that stretched micro-nano fibers not only have a larger dispersion control range (approximately 2-3 orders of magnitude higher than ordinary fibers), but also can achieve positive and negative dispersion control by selecting different initial diameters.

[0084] For the stretching method to control the dispersion of micro-nano optical fibers, the most important characteristic is that the diameter of the micro-nano optical fiber is very small, about 1% of that of ordinary optical fibers. Therefore, the required tension is one ten-thousandth of that of ordinary optical fibers. Even if the micro-nano optical fiber is stretched by 10%, the required tension is still very small, at the millinewtons level.

[0085] Figure 10 is a schematic diagram of the tension required for a micro-nano optical fiber with a diameter of 0.8 microns and an ordinary single-mode optical fiber at different strains in one embodiment of the present application. This shows that stretching the micro-nano optical fiber to control dispersion does not require a lot of tension, and the tension requirement for the stretching device is very small. In comparison, the diameter of an ordinary optical fiber is about 2 orders of magnitude larger than that of the micro-nano optical fiber, and the cross-sectional area is about 4 orders of magnitude larger than that of the micro-nano optical fiber. Therefore, the tension required for the same deformation amount is also about 4 orders of magnitude higher, so the tension requirement for the stretching device is very high.

[0086] In the dispersion control method provided in the embodiments of the present application, a target stretching amount for the micro-nano optical fiber is determined based on the target wavelength and the target dispersion adjustment amount. The micro-nano optical fiber is then stretched by controlling a stretching device to adjust the spacing between the support elements at both ends of the micro-nano optical fiber until the stretching amount reaches the target stretching amount, thereby completing the dispersion control. In this method, the target stretching amount for the micro-nano optical fiber is determined based on the signal wavelength, the dispersion adjustment amount, and the preset diameter and length of the micro-nano optical fiber, providing data support for controlling the dispersion of the target conventional optical fiber. Furthermore, by adjusting the spacing between the support elements at both ends of the micro-nano optical fiber through the stretching device, precise dispersion control can be achieved.

[0087] By cascading multiple sections of micro-nano optical fibers, the dispersion control range can be increased. Based on this, in an exemplary embodiment, another optional method for dispersion control is provided, which may include the following steps: In a case where multiple micro-nano optical fibers are cascaded, with both ends of each micro-nano optical fiber fixed to a support element, each micro-nano optical fiber is stretched by adjusting the spacing between the support elements at both ends of each micro-nano optical fiber to achieve dispersion control.

[0088] Micro-nano optical fiber cascading refers to connecting multiple micro-nano optical fibers in a certain manner. There are many ways to connect them. In one embodiment, the cascading method of multiple micro-nano optical fibers includes any one of fiber fusion splicing, fiber fusion taper, or mode adapter.

[0089] FIG11 is a schematic diagram of two micro-nano optical fibers cascaded in one embodiment of the present application, wherein ⑦ is the connection portion when the two micro-nano optical fibers are cascaded.

[0090] Taking the above-mentioned two micro-nano optical fiber cascades as an example, two micro-nano optical fibers are cascaded, and both ends of each micro-nano optical fiber are fixed to the supporting elements through fastening elements. The spacing between the supporting elements at both ends of each micro-nano optical fiber can be adjusted by a stretching device to stretch each micro-nano optical fiber at the same time. By changing the diameter and length of each micro-nano optical fiber, the dispersion control range is increased, and a large range of dispersion control is achieved.

[0091] It should be noted that the cascaded micro-nano optical fibers in the embodiment of the present application can be micro-nano optical fibers with different parameters (such as refractive index, core diameter, etc.) and different materials. This not only increases the dispersion control range, but also increases the adjustment freedom.

[0092] In the dispersion control method provided in the embodiments of the present application, when multiple micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to support elements, each micro-nano optical fiber is stretched by adjusting the spacing between the support elements at both ends of each micro-nano optical fiber to achieve dispersion control. In this method, by cascading multiple micro-nano optical fibers and simultaneously stretching each micro-nano optical fiber to produce different stretching amounts, the diameter and length of each micro-nano optical fiber are changed, and the dispersion of each micro-nano optical fiber is changed, thereby increasing the dispersion control range and achieving dispersion control over a wide range.

[0093] In addition, in an exemplary embodiment, the present application also provides an optional example of a dispersion control method, as shown in FIG12 , which may include the following steps S401 and S403 .

[0094] Step S401: Select a micro-nano optical fiber with a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount.

[0095] Among them, the two ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers.

[0096] Step S402: determining a target stretching amount of the micro-nano optical fiber according to the target wavelength, the target dispersion adjustment amount, the preset diameter, and the preset length.

[0097] In step S403, corresponding to the situation where both ends of the micro-nano optical fiber are fixed on the supporting elements, the spacing between the supporting elements at both ends of the micro-nano optical fiber is adjusted by controlling the stretching device, and the micro-nano optical fiber is stretched until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0098] The process of the above steps S401-S403 can be referred to the description of the above method embodiment. The implementation principles and technical effects are similar and will not be repeated here.

[0099] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0100] Based on the same inventive concept, embodiments of the present application also provide a dispersion control device for implementing the aforementioned dispersion control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more dispersion control device embodiments provided below can be found in the above-described limitations of the dispersion control method and are not further elaborated here.

[0101] In an exemplary embodiment, as shown in FIG13 , a dispersion control device 1 is provided, including: a fiber selection module 10 and a dispersion control module 20 .

[0102] The optical fiber selection module 10 is used to select a micro-nano optical fiber with a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount, wherein both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers.

[0103] The dispersion control module 20 is used to stretch the micro-nano optical fiber by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber when both ends of the micro-nano optical fiber are fixed to the supporting elements, so as to achieve dispersion control.

[0104] In one embodiment, the dispersion control module 20 is further used to: determine the target stretching amount of the micro-nano optical fiber based on the target wavelength, the target dispersion adjustment amount, the preset diameter and the preset length; and control the stretching device to adjust the spacing between the supporting elements at both ends of the micro-nano optical fiber, and perform a stretching operation on the micro-nano optical fiber until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0105] In one embodiment, the above-mentioned dispersion control device 1 is also used for: when multiple micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to supporting elements, each micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of each micro-nano optical fiber to achieve dispersion control.

[0106] Each module in the above-mentioned dispersion control device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0107] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0108] According to the target wavelength and the target dispersion adjustment amount, a micro-nano optical fiber with a preset diameter and a preset length is selected; both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers;

[0109] When both ends of the micro-nano optical fiber are fixed to the supporting elements, the micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control.

[0110] In one embodiment, when a processor executes logic in a computer program for stretching a micro-nano optical fiber by adjusting the spacing between support elements at both ends of the micro-nano optical fiber to achieve dispersion control, the processor specifically implements the following steps:

[0111] The target stretching amount of the micro-nano optical fiber is determined based on the target wavelength, target dispersion adjustment amount, preset diameter and preset length; the spacing between the supporting elements at both ends of the micro-nano optical fiber is adjusted by controlling the stretching device, and the micro-nano optical fiber is stretched until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0112] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0113] When multiple micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to supporting elements, each micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of each micro-nano optical fiber to achieve dispersion control.

[0114] The principles and specific processes of implementing the computer device provided above in each embodiment can be found in the description of the dispersion control method embodiment in the aforementioned embodiment, and will not be repeated here.

[0115] In one embodiment, a non-volatile computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0116] According to the target wavelength and the target dispersion adjustment amount, a micro-nano optical fiber with a preset diameter and a preset length is selected; both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers;

[0117] When both ends of the micro-nano optical fiber are fixed to the supporting elements, the micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control.

[0118] In one embodiment, when the logic of a computer program for stretching the micro-nano optical fiber by adjusting the spacing between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control is executed by a processor, the following steps are specifically implemented: determining the target stretching amount of the micro-nano optical fiber based on the target wavelength, the target dispersion adjustment amount, the preset diameter and the preset length; adjusting the spacing between the supporting elements at both ends of the micro-nano optical fiber by controlling the stretching device, and stretching the micro-nano optical fiber until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0119] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when multiple micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to a supporting element, each micro-nano optical fiber is stretched by adjusting the spacing between the supporting elements at both ends of each micro-nano optical fiber to achieve dispersion control.

[0120] The principles and specific processes of the computer-readable storage medium provided above in implementing each embodiment can be found in the description of the dispersion control method embodiment in the aforementioned embodiment, and will not be repeated here.

[0121] In one embodiment, a computer program product is provided, comprising executable instructions, which, when executed by a processor, implement the following steps:

[0122] According to the target wavelength and the target dispersion adjustment amount, a micro-nano optical fiber with a preset diameter and a preset length is selected; both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers;

[0123] When both ends of the micro-nano optical fiber are fixed to the supporting elements, the micro-nano optical fiber is stretched by adjusting the distance between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control.

[0124] In one embodiment, when the logic of performing a stretching operation on the micro-nano optical fiber by adjusting the spacing between the supporting elements at both ends of the micro-nano optical fiber to achieve dispersion control is executed by the processor, the following steps are specifically implemented: determining the target stretching amount of the micro-nano optical fiber based on the target wavelength, the target dispersion adjustment amount, the preset diameter and the preset length; adjusting the spacing between the supporting elements at both ends of the micro-nano optical fiber by controlling the stretching device, and performing a stretching operation on the micro-nano optical fiber until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, thereby completing the dispersion control.

[0125] In one embodiment, when the executable instructions are executed by the processor, the following steps are also implemented: when multiple micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to supporting elements, each micro-nano optical fiber is stretched by adjusting the spacing between the supporting elements at both ends of each micro-nano optical fiber to achieve dispersion control.

[0126] The principles and specific processes of implementing the computer program products provided above in each embodiment can be found in the description of the dispersion control method embodiment in the aforementioned embodiment, and will not be repeated here.

[0127] It should be noted that the data involved in this application (including but not limited to data used for analysis, stored data, displayed data, etc.) are all information and data that are authorized or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0128] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0129] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for dispersion control, characterized in that The method includes: Selecting a micro-nano optical fiber with a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount; both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers; Corresponding to the case where both ends of the micro-nano optical fiber are fixed to a support element, performing a stretching operation on the micro-nano optical fiber by adjusting the distance between the support elements at both ends of the micro-nano optical fiber to achieve dispersion control.

2. The method according to claim 1, wherein The performing a stretching operation on the micro-nano optical fiber by adjusting the distance between the support elements at both ends of the micro-nano optical fiber to achieve dispersion control includes: Determining a target stretching amount of the micro-nano optical fiber according to the target wavelength, the target dispersion adjustment amount, the preset diameter, and the preset length; Controlling a stretching device to adjust the distance between the support elements at both ends of the micro-nano optical fiber, performing a stretching operation on the micro-nano optical fiber until the stretching amount of the micro-nano optical fiber reaches the target stretching amount, and completing dispersion control.

3. The method according to claim 1 or 2, characterized in that, The stretching device includes an electric control displacement stage or an actuator.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: Corresponding to the case where a plurality of the micro-nano optical fibers are cascaded and both ends of each micro-nano optical fiber are fixed to the support element, performing a stretching operation on each micro-nano optical fiber by adjusting the distance between the support elements at both ends of each micro-nano optical fiber to achieve dispersion control.

5. The method according to claim 4, characterized in that The cascading manner of the plurality of micro-nano optical fibers includes any one of optical fiber fusion splicing, optical fiber fused tapering, or mode adapter.

6. The method according to any one of claims 1-5, characterized in that, Both ends of the micro-nano optical fiber are fixed to the support element through a fastening element.

7. The method according to claim 6, wherein The fastening element includes an optical fiber fixing clamp or a curing adhesive.

8. The method according to any one of claims 1-5, characterized in that, The micro-nano optical fiber is placed in a telescopic optical fiber encapsulation device.

9. The method according to any one of claims 1-5, characterized in that The ordinary optical fiber includes any one of a single-mode optical fiber, a single-mode polarization-maintaining optical fiber, a double-clad optical fiber, a triple-clad optical fiber, or a multi-mode optical fiber; Optionally, the micro-nano optical fiber is drawn from an ordinary optical fiber.

10. The method according to any one of claims 1-9, characterized in that, Both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers through a tapered transition region.

11. The method according to any one of claims 1-10, characterized in that, The selecting a micro-nano optical fiber with a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount includes: selecting the micro-nano optical fiber with the preset diameter and the preset length that matches the target wavelength and the target dispersion adjustment amount according to the mapping relationship between the target wavelength and the target dispersion adjustment amount and the preset diameter and the preset length.

12. A dispersion control device, characterized in that, The device includes: An optical fiber selection module, configured to select a micro-nano optical fiber with a preset diameter and a preset length according to a target wavelength and a target dispersion adjustment amount; both ends of the micro-nano optical fiber are continuously connected to ordinary optical fibers; A dispersion control module, configured to perform a stretching operation on the micro-nano optical fiber by adjusting the distance between the support elements at both ends of the micro-nano optical fiber to achieve dispersion control corresponding to the case where both ends of the micro-nano optical fiber are fixed to a support element.

13. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 11 are implemented.

14. A non-volatile computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.

15. A computer program product, comprising executable instructions, characterized in that, When the executable instruction is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.

Images