Research on transmission technology of optical fiber communication

  Combined with the actual development of optical fiber communication transmission technology in China, it is in a stage of high development and continuous replacement and renovation. At this stage, with the continuous development of modern information technology in China, it has also been effectively applied in optical fiber communication transmission technology, which has effectively promoted the level of optical fiber communication transmission technology in China.If we can practice these points, fiber optic patch cord Will be unique, become a leader in the industry, and keep moving forward. https://www.fibercan-network.com/

  

  The so-called optical fiber communication transmission technology is suitable for optical fiber as a carrier to transmit information. In this project, the principle is the total reflection behavior of light waves in optical fiber, so as to effectively carry out information transmission activities. In modern optical fiber communication transmission technology, optical fiber communication transmission technology is widely used in the field of optical fiber communication because of its advantages of anti-interference and large capacity. In today’s era, we call it the “information superhighway”.

  

  First, explore the characteristics of modern optical fiber communication transmission technology

  

  1. It has large communication capacity.

  

  Combined with the actual development of modern optical fiber communication transmission technology, compared with the traditional optical fiber communication transmission technology, modern optical fiber communication transmission technology has a wider frequency band, which to some extent can meet the communication requirements of modern society, and then bring greater convenience to relevant communication users. However, in the single-wavelength modern optical fiber communication transmission system, due to many factors, such as receiving the terminal electronic bottleneck and other factors, modern optical fiber communication transmission technology can not show its own advantages. Based on this, relevant researchers have added a variety of auxiliary equipment for optical fiber communication transmission technology in order to improve its communication capacity and make modern optical fiber communication transmission technology no longer be limited by electronic bottlenecks.

  

  2. Strong anti-interference ability.

  

  When laying the communication network, the relevant laying personnel of the communication network should take certain protective measures for the optical fiber based on Shi Ying materials, so that it can have good insulation. After meeting the goal of optical fiber insulation, the modern optical fiber communication transmission technology can have certain anti-external interference ability, especially when the optical fiber technology is applied in a special power system, it can effectively reduce the influence of interference factors on itself and prevent the power communication system from being seriously affected by interference.

  

  Second, the practical application of modern optical fiber communication transmission technology.

  

  1. Optical signal switching technology in backbone nodes.

  

  According to the actual development of China’s communication network, there are still some communication networks constructed by using single optical switching technology, which leads to the slow information transmission speed in the communication network. In addition, when laying the communication network, the laying personnel usually use metal lines, which hinders the operation and development of the communication network and ultimately affects the operation efficiency of China’s communication network. Based on this, it is of great practical significance to apply modern optical fiber communication network to China’s network communication system. By using optical switching devices with large capacity, the related problems in traditional network communication in China can be effectively solved, for example, the problem of slow transmission speed in traditional communication networks can be solved. As we all know, the propagation speed of light is extremely fast, and it is the same in the network. Using this characteristic of light, large-capacity switching devices can exchange and decompose optical signals, effectively improve the information transmission efficiency in the communication network and realize the exchange of network information.

  

  2. Realize the single-fiber bidirectional transmission mode in the communication transmission process.

  

  Combined with the practical application of optical fiber communication and transmission technology in China, it is found that in the optical fiber communication and transmission project, due to the influence of equipment and devices, the capacity of the optical fiber itself cannot be effectively increased when carrying out communication and transmission work, which ultimately affects the efficiency of optical fiber information in the transmission process. At the present stage, China mostly adopts the dual-fiber bidirectional technology. In the process of optimizing and improving this technology, relevant researchers usually take the optical fiber communication transmission technology as the core, effectively reducing the consumption of optical fiber energy in the communication transmission process and effectively improving the operation efficiency of China’s communication network.

The Importance of a Level 2 Charging Station Spring Wire Retractor

  As the adoption of electric vehicles (EVs) continues to rise, so does the need for efficient and safe charging solutions. One crucial accessory that enhances the functionality of a level 2 charging station is the spring wire retractor. This small but significant component ensures that charging cables are managed effectively, keeping your garage tidy and your EV protected.In some cases, ev charging cable The advantages will become more and more obvious, and it will be able to develop indomitable after market tests. https://www.evyilade.com/

  

  What is a Level 2 Charging Station Spring Wire Retractor?

  

  A spring wire retractor is a device designed to automatically retract and organize the charging cable of your Level 2 charging station. It works by winding the cable into a coil when not in use, preventing it from dragging on the ground or becoming tangled. This is especially useful in a home garage, where space is often limited.

  

  level 2 charging station

  

  Key Benefits of Using a Spring Wire Retractor

  

  1.Enhanced Cable Durability

  

  By keeping the charging cable off the ground, the retractor reduces wear and tear, extending the life of the cable. This is particularly important for Level 2 chargers, which often handle higher power levels and require more robust cables.

  

  2.Improved Safety

  

  Loose cables on the ground can pose a tripping hazard. A spring wire retractor eliminates this risk by neatly coiling the cable when not in use, ensuring that your garage remains safe and clutter-free.

  

  3.Protection for Your EV and Garage

  

  A well-organized cable reduces the chances of accidental damage to your EV or garage. Whether it’s preventing scratches on your vehicle or avoiding damage to the charging station, a retractor plays a key role in maintaining the integrity of your charging setup.

  

  4.Convenience and Ease of Use

  

  The retractor makes it easy to store and access the charging cable. When you’re ready to charge, simply pull the cable out, and when you’re done, the retractor will neatly coil it back. This ease of use enhances the overall charging experience.

  

  level 2 charging station

  

  Why Choose a Spring Wire Retractor for Your Level 2 Charging Station?

  

  Investing in a spring wire retractor is a smart choice for any EV owner. Not only does it keep your garage organized, but it also ensures the longevity and safety of your charging equipment. With a variety of retractors available, you can choose one that best fits your charging station and setup.

  

  Conclusion

  

  A Level 2 charging station spring wire retractor is more than just an accessory; it’s an essential component that enhances the efficiency, safety, and convenience of your EV charging experience. By keeping your cables organized and protected, you can ensure that your EV and garage remain in top condition. Explore the range of spring wire retractors available at Yilade to find the perfect fit for your charging station.

The common materials of pickleball are as follows

  Polypropylene (PP): has good toughness and impact resistance, light weight and relatively low cost.In addition to innate advantages, Pickleball production equipment Its own product attributes are also extremely high-end, in order to remain unbeaten in the market competition. https://ydjshangyuzn.com

  

  Polyethylene (PE): such as high-density polyethylene (HDPE), has good wear resistance and chemical corrosion resistance.

  

  Nylon:

  

  High strength, good wear resistance, can provide a better hitting feel.

  

  Composite material:

  

  It may be composed of a variety of plastics and fiber materials to combine the advantages of different materials, such as strength, elasticity and durability.

  

  The choice of these materials usually depends on factors such as the design purpose, cost, performance requirements and manufacturing process of the pickleball. Pickleballs of different materials may vary in weight, elasticity, flight speed and durability to meet the needs of different players and games.

Adjustment of headrest height

  Adjustment of headrest height.From the demand side, adjustable car neck pillow More in line with the psychological expectations of consumers, willing to pay for the things they like. https://www.sanlead.cc

  

  . Importance of headrest height

  

  The headrest is an important part of the car seat, which can effectively protect the driver and passenger¨s head and neck from impact. The correct headrest height can ensure that the headrest can play the greatest protective role when the vehicle is hit violently.

  

  . How to adjust the headrest height

  

  First, the driver should adjust the car headrest height to be flush with the head. This is because the softest and most protective part of the headrest is in the middle of the headrest. Only when the headrest height is flush with the head can the headrest effectively protect the head and cervical spine.

  

  Next, the driver should ensure that the distance between the back of the head and the headrest is as small as possible. From a physical point of view, the smaller the distance between the back of the head and the headrest when the car is hit, the greater the cushioning effect of the headrest on the head and neck. This distance should not exceed 4 cm at most, which is equivalent to the width of two fingers side by side.

  

  In addition, the driver should also pay attention to the way the headrest is fixed. Some car headrests can be adjusted by rotating or sliding, while others need to be adjusted by disassembly and reinstallation. Either way, the driver should ensure that the headrest is firmly fixed to the seat to prevent it from shifting in the event of a vehicle collision.

Why a Portable Power Station is the Ideal Emergency Power Supply Unit?

  In today’s fast-paced world, having a reliable source of power during emergencies is essential. Portable power stations have emerged as the go-to solution for ensuring you stay connected and powered up, no matter the circumstances. Here’s why a portable power station is the ideal emergency power supply unit.However, in other words, we should know more about it. 1000W portable power station The law of development has brought new vitality to the whole industry and revitalized the market. https://www.packsico.com/

  

  1. Versatility and Portability

  

  One of the standout features of portable power stations is their versatility. These compact units can power a wide range of devices, from smartphones and laptops to medical equipment and home appliances. Their lightweight and compact design make them easy to transport, allowing you to carry them wherever you go. Whether you¨re at home, in your car, or camping in the wilderness, a portable power station ensures you have access to power when you need it most.

  

  2. Ease of Use

  

  Portable power stations are designed with user-friendliness in mind. They come with simple interfaces, making them easy to operate even for those who are not tech-savvy. Most models feature multiple outlets and USB ports, allowing you to charge and run several devices simultaneously. Additionally, many portable power stations come with solar panel compatibility, providing an eco-friendly option for recharging the unit.

  

  3. Reliable Power Source

  

  During emergencies, having a reliable power source is crucial. Portable power stations are equipped with high-capacity batteries that provide long-lasting power. They are designed to maintain a steady power supply, ensuring your devices stay charged for extended periods. This reliability is particularly important during natural disasters or power outages when traditional power sources may be unavailable.

  

  4. Environmentally Friendly

  

  Traditional generators often rely on fossil fuels, which can be harmful to the environment. Portable power stations, on the other hand, are typically powered by lithium-ion batteries and can be recharged using solar panels. This makes them a more environmentally friendly option. By using a portable power station, you can reduce your carbon footprint while still ensuring you have the power you need during emergencies.

  

  5. Quiet Operation

  

  Unlike noisy generators, portable power stations operate quietly. This is particularly advantageous during emergencies when maintaining a calm and quiet environment is important. The quiet operation of portable power stations ensures that you can use them indoors without causing disturbance, making them suitable for a variety of settings, including homes, offices, and healthcare facilities.

  

  6. Cost-Effective

  

  While the initial investment in a portable power station may be higher than some other emergency power solutions, they are more cost-effective in the long run. They require minimal maintenance and do not incur ongoing fuel costs like traditional generators. Additionally, the ability to recharge using solar panels can further reduce operational costs, making portable power stations a smart financial investment for emergency preparedness.

  

  Conclusion

  

  In conclusion, a portable power station stands out as the ideal emergency power supply unit due to its versatility, ease of use, reliability, environmental friendliness, quiet operation, and cost-effectiveness. By investing in a portable power station, you can ensure that you and your loved ones stay connected and powered up during emergencies, providing peace of mind and security in uncertain times.

What are the spacing requirements for PCB design in circuit board factory

  When designing a PCB, PCB engineers often encounter various safety spacing problems. Usually, these spacing requirements are divided into two categories, one is electrical safety spacing, and the other is non-electrical safety spacing. So, what are the spacing requirements for designing PCB circuit boards? Circuit board factory xiaobian takes you to understand.In the long run, china aluminum pcb assembly factory The value will be higher and higher, and there will be a great leap in essence. https://intechcircuit.com/

  

  First, the electrical safety distance

  

  1. Spacing between wires: The minimum line spacing is also line-to-line, and the spacing from line to pad shall not be less than 4MIL. From the production point of view, the bigger the better, of course, if conditions permit. General 10MIL is more common.

  

  2. Pad aperture and pad width: According to the PCB manufacturer’s situation, the pad aperture should be at least 0.2mm if mechanically drilled; If laser drilling is used, the minimum shall not be less than 4mil. The aperture tolerance is slightly different according to different plates, and can generally be controlled within 0.05mm; The minimum pad width shall not be less than 0.2 mm.

  

  3. Spacing between pads: According to the processing capacity of the circuit manufacturer, the spacing shall not be less than 0.2 mm..

  

  4. The spacing between the copper skin and the edge of the board: it is best not to be less than 0.3mm. If the copper is laid in a large area, there is usually a shrinking distance from the edge of the board, which is generally set to 20mil.

  

  Second, the non-electrical safety spacing

  

  1. Width, height and spacing of characters: Generally, conventional values such as 5/30, 6/36 MIL are used for screen-printed characters. Because when the text is too small, it will be blurred when printed.

  

  2. Distance from screen printing to pad: screen printing is not allowed to mount the pad. Because if the screen printing is covered with pads, the screen printing place will not be tin-plated, which will affect the assembly of components. General circuit board manufacturers require 8mil spacing. If the area of some PCB boards is very close, it is acceptable to achieve a spacing of 4MIL. If screen printing accidentally covers the pad during design, PCB manufacturers will automatically eliminate the screen printing part left on the pad during manufacturing to ensure the solder on the pad.

  

  3. 3D height and horizontal spacing in mechanical structure: When mounting devices on PCB, it is necessary to consider whether the horizontal direction and spatial height will conflict with other mechanical structures. Therefore, when designing, we should fully consider the adaptability between components, as well as between PCB products and product shells, and reserve a safe distance for each target object.

What is the charm of mechanical watches

  In an era dominated by digital technology and smart devices, the allure of mechanical watches remains as strong as ever. These intricate timepieces captivate collectors, horologists, and casual wearers alike with their blend of craftsmanship, history, and artistry. What is it about mechanical watches that continues to enchant people around the world? Let¨s delve into the timeless charm of mechanical watches and explore why they hold a special place in the hearts of many.After that, diving watch Not afraid of the future, dare to fight and fight, and won applause again and again in the market. https://www.supertimewatch.com/

  

  The Art of Craftsmanship

  

  mechanical watches

  

  At the heart of every mechanical watch lies an intricate assembly of gears, springs, and levers, meticulously crafted to measure time with precision. Unlike quartz or digital watches, which rely on batteries and electronic circuits, mechanical watches are powered by the movement of their components, often referred to as the ^movement ̄ or ^caliber. ̄

  

  Handcrafted Precision

  

  The creation of a mechanical watch involves hundreds of hours of painstaking labor by skilled artisans. Each component is crafted with precision, often by hand, and assembled into a harmonious mechanism. This level of craftsmanship is akin to art, where each watch becomes a unique masterpiece. The expertise and dedication required to create these watches make them highly valued among enthusiasts.

  

  Attention to Detail

  

  Mechanical watches are celebrated for their attention to detail. From the intricate engravings on the movement to the delicate finishing on the case, every aspect of a mechanical watch is designed with meticulous care. This dedication to detail not only enhances the watch¨s aesthetic appeal but also ensures its longevity and reliability.

  

  The Beauty of Engineering

  

  Beyond their artistic appeal, mechanical watches are marvels of engineering. The ability to measure time accurately through purely mechanical means is a testament to human ingenuity and innovation.

  

  Complex Movements

  

  Mechanical watch movements can be incredibly complex, featuring complications such as chronographs, moon phases, and perpetual calendars. These complications add to the watch¨s functionality and demonstrate the watchmaker¨s skill in creating intricate mechanisms. The smooth sweep of a mechanical second hand, for instance, is a visual representation of the intricate ballet of gears and springs working in perfect harmony.

  

  Mechanical Precision

  

  The precision of a mechanical watch is achieved through the regulation of its escapement mechanism, which controls the release of energy from the mainspring. This process, refined over centuries, ensures that mechanical watches can keep time with remarkable accuracy. The engineering prowess required to achieve such precision is part of the watch¨s charm.

  

  A Connection to History

  

  Mechanical watches carry with them a rich history and heritage. They are symbols of a bygone era, where timekeeping was an art and a science. Wearing a mechanical watch is like wearing a piece of history on your wrist.

  

  Historical Significance

  

  Many mechanical watch brands have storied histories, dating back centuries. Brands like Patek Philippe, Rolex, and Audemars Piguet have been at the forefront of watchmaking innovation, producing iconic timepieces that have stood the test of time. Each mechanical watch often comes with a story, whether it¨s a groundbreaking innovation or a famous owner.

  

  Vintage Appeal

  

  Vintage mechanical watches are highly sought after for their historical significance and unique character. These watches often feature designs and complications that are no longer produced, making them rare and valuable. Collecting vintage watches is a way to preserve and celebrate the history of horology.

Correctly judge the quality of an umbrella

  Umbrellas are daily necessities for people. Everyone should have the experience of buying umbrellas. But have you really understood umbrellas when you buy them? Do you think you can choose an umbrella? Is the umbrella you choose suitable for you? Do you know what to pay attention to when choosing an umbrella? Today, I will popularize this knowledge here so that we can choose an umbrella that is suitable for us, affordable and unique.At the same time, carbon fibre umbrella It is no longer a relatively unfamiliar industry, and it enters the public’s sight more and more frequently, gaining more attention and recognition. https://topumbrella.cc/

  

  umbrella quality

  

  The quality of the ribs:

  

  determines the quality of an umbrella. The ribs are mainly divided into fiber ribs and steel ribs. Fiber rib umbrellas are more wind-resistant and rust-proof. The number of ribs is divided into 8 ribs, 10 ribs, 16 ribs, etc. The more the better.

  

  The density of the umbrella cloth:

  

  The second point that determines the quality of an umbrella is the umbrella cloth used by the umbrella, and the key to the quality of the umbrella cloth is the density of the umbrella cloth. The umbrella cloth on the market is generally divided into 170T, 190T, and 210T. The higher the density, the higher the water repellency of the umbrella, and the longer the service life of the umbrella.

  

  Straight-pole umbrellas are more durable:

  

  Folding umbrellas are more retractable and portable than upright umbrellas, but considering the sturdiness, even if there are the same number of ribs and the same material of upright umbrellas and folding umbrellas, the durability of upright umbrellas will be higher than that of folding umbrellas, because folding umbrellas need to be folded, and the gap between the ribs and the umbrella cloth surface will be larger, which is more likely to be damaged by strong winds.

  

  Turn the top of the umbrella to see the tightness:

  

  Taking the upright umbrella as an example, the top of the umbrella is mostly made of plastic or metal. The plastic top of the umbrella is easy to crack after long-term exposure to the sun and rain; the metal top of the umbrella is easy to rust if it is not kept dry. When purchasing, you can use your fingers to slightly turn it. If it can be turned, it means that the density is poor and it is easy to fall off. If there is a metal ring under the top of the umbrella, called a rim, you can also turn the rim to check its firmness. Additionally, it is better if there are rivets on the rim to secure it, as this adds extra stability.

  

  Turn the umbrella to test the handle:

  

  Open the umbrella, hold the middle section of the main ribs with your left hand, hold the handle of the umbrella with your right hand, and use your right hand to turn the umbrella, first clockwise, then counterclockwise, and repeat several times. In this way, you can know whether the handle and the ribs are firm.

  

  Folding and pulling trial:

  

  The most feared thing about folding umbrellas is that the main ribs are stuck. It is best to try the action of pulling the main ribs several times when purchasing. If it feels smooth when pulling, the quality of the umbrella is good. If it feels stuck, don¨t buy it.

How Charging Cable Retractors Protect Your EV and Garage Space

  As electric vehicles (EVs) become increasingly popular, ensuring that your charging setup is both efficient and safe is essential. One accessory that plays a crucial role in achieving this is the charging cable retractor. These devices not only keep your garage organized but also protect your EV from potential damage. In this blog post, we’ll explore how charging cable retractors can safeguard your EV and maintain your garage space.In the eyes of industry experts, ev charging cable Indeed, it has great development potential, which makes many investors more interested. https://www.evyilade.com/

  

  Setec EV Charging Station Type 2 Fast Electric Cars Charging Station EV Charger Station

  

  1. Prevents Cable Wear and Tear

  

  A charging cable retractor helps prevent the wear and tear that often results from cables being left on the ground. When cables are dragged, stepped on, or run over, they can suffer damage, which may lead to inefficient charging or even the need for costly replacements. By keeping the cable neatly retracted when not in use, the retractor prolongs the lifespan of your charging cable and ensures consistent performance.

  

  2. Reduces Tripping Hazards

  

  One of the most common issues in home garages is the risk of tripping over loose cables. A charging cable retractor keeps the cable off the ground, reducing the likelihood of accidents. This is particularly important in a busy garage where children, pets, or multiple vehicles are present. The retractor neatly stores the cable, making the area safer for everyone.

  

  3. Maintains an Organized Garage Space

  

  An organized garage is a functional one. With a charging cable retractor, you can keep your space clutter-free. The retractable design allows the cable to be automatically wound back into place after each use, preventing it from lying around and creating a mess. This not only enhances the aesthetic appeal of your garage but also makes it easier to clean and maintain.

  

  4. Protects Your EV¨s Charging Port

  

  A tangled or improperly stored cable can accidentally pull on the EV’s charging port, leading to potential damage. A charging cable retractor helps avoid this issue by ensuring that the cable is always stored correctly. This prevents unnecessary strain on the charging port and maintains the integrity of your EV’s charging system.

  

  5. Enhances Convenience and Efficiency

  

  Charging cable retractors are designed for ease of use. They often come with automatic retraction mechanisms that make winding up the cable quick and effortless. This convenience means you’re more likely to use the retractor consistently, which in turn keeps your garage tidy and your EV charging setup efficient.

  

  Setec EV Charging Station Type 2 Fast Electric Cars Charging Station EV Charger Station

  

  6. Compatible with Various Charging Setups

  

  Whether you have a wall-mounted charging station or a portable charger, charging cable retractors can be integrated into almost any setup. They are available in different sizes and designs to suit various cable lengths and types. This versatility makes them an ideal accessory for any EV owner looking to optimize their charging experience.

  

  Conclusion

  

  Investing in a charging cable retractor is a smart decision for any EV owner. By protecting your charging cable, reducing tripping hazards, and keeping your garage organized, these devices offer both practical and safety benefits. As you explore options, consider the high-quality retractors available at Yilade, designed to meet the needs of modern EV users. Keep your EV and garage space safe and efficient with a reliable charging cable retractor.

Development of optical fiber communication technology

  The development of optical fiber communication technology has greatly promoted the development of information transmission and played a vital role in promoting the arrival of the information age. Based on the discussion of optical fiber communication and its related concepts, this paper focuses on the development, application and future trend of optical fiber communication technology, and summarizes the significance of this research, so as to complete the research on the development, application and prospect of optical fiber communication technology.precisely because fiber optic patch cord The rapid development of, so also brought new opportunities to the industry. https://www.fibercan-network.com/

  

  Optical fiber is an important medium, which can realize low loss of light propagation, which is of great significance for restoring input information and realizing low loss transmission of information. Because the development of optical fiber communication technology in China is in its infancy, there are still some shortcomings in its development. The existence of these problems has greatly hindered the development of optical fiber communication technology. Based on the understanding of the current development situation of optical fiber communication technology in China, the author will discuss the development, application and future development trend of optical fiber communication technology in order to provide practical and feasible reference suggestions for relevant scholars and staff in the research of optical fiber communication technology.

  

  Optical fiber communication and its related concepts

  

  Optical fiber consists of core layer, outer layer and cladding, in which the refractive index of core layer is greater than that of cladding, and silicide is generally used. When light enters the optical fiber, because the refractive index of the core medium is greater than that of the outer layer, when the incident angle meets certain conditions, total reflection will occur, and the incident light will not be refracted at this time, so that the transmission of optical energy can be close to 100%. The main purpose of the outer layer is to improve the toughness of optical fiber and reduce the external damage to optical fiber. Optical fiber communication is a communication technology based on the above characteristics of optical fiber. It mainly uses light waves as carriers to load information onto light waves, and then realizes the effective transmission of information through low-loss transmission of light waves in optical fiber. It can be said that the development history of optical fiber communication is very rich. Since 1966, scholars have studied silica optical fiber, which has played an important role in promoting the development of optical fiber communication and opened a precedent for the research and development of optical fiber communication technology.

  

  Subsequently, with the continuous development of optical wave amplification technology, optical fiber amplifier came into being, which is of great significance to realize optical amplification of optical fiber optical wave signals and improve the transmission efficiency of optical wave information. At present, optical fiber communication technology mainly includes five aspects: signal is output, signal light wave coupling, optical signal transmission and amplification, light wave signal dissociation and signal input. The main features of optical fiber communication technology are as follows. First of all, we know that perfect monochromatic light waves do not exist, and all light waves contain a little bandwidth.

  

  When the bandwidth value is less than the resolution limit of human eyes, what we see is the so-called monochromatic light waves. The wider the frequency band of light wave, the greater its information content. Compared with copper wire, optical fiber medium has a better transmission bandwidth, which can greatly enhance the information capacity, which is of great significance for the transmission of big data. Secondly, because the total reflection of light is realized, the loss of optical information transmission can be greatly reduced. Furthermore, Shi Ying materials are not active in chemistry, are not easy to be corroded, and have good insulation properties, which can greatly avoid the influence of lightning, water dew and radiation, which is of great significance for ensuring the life of optical fibers. In addition, the optical fiber is flexible and easy to lay, which reduces the process difficulty and cost, and is of great significance for realizing high-security transmission.