Yearly Archives: 2025

　　The transition to electric vehicles (EVs) is accelerating globally, and with it comes the need for efficient and convenient charging solutions. One essential accessory for EV owners is the Type 2 to Type 1 electric car charging cable reel. This blog post will delve into what this cable reel is, why it’s important, and how it can benefit EV owners.So, Yilade electric car charging stations On the contrary, there is still a lot of room to play. https://www.evyilade.com/

　　What is a Type 2 to Type 1 Electric Car Charging Cable Reel?

　　A Type 2 to Type 1 electric car charging cable reel is a device that houses a retractable charging cable designed to connect Type 2 charging stations (commonly used in Europe) to Type 1 charging ports (found on many electric vehicles, particularly those manufactured in Japan and the US). This cable reel provides a neat, efficient, and portable solution for EV charging.

　　Retractable Charge Cable Type 2 to Type 1 3.5KW to 7KW Electric Car Charging Cable Reel

　　Why is a Type 2 to Type 1 Charging Cable Reel Important?

　　Compatibility: As EV markets expand, different regions use different types of charging connectors. Type 2 connectors are standard in Europe, while Type 1 connectors are prevalent in North America and Japan. A Type 2 to Type 1 charging cable reel ensures that EV owners can charge their vehicles at various stations without compatibility issues.

　　Convenience: The retractable design of the cable reel makes it easy to store and transport. It prevents the cable from tangling or getting damaged, ensuring that it is always ready for use.

　　Efficiency: Using a cable reel can streamline the charging process, saving time and reducing hassle. This is particularly useful for daily commuters and long-distance travelers who need reliable and quick access to charging.

　　Benefits of Using a Type 2 to Type 1 Electric Car Charging Cable Reel

　　Portability: The compact and lightweight design of the cable reel makes it easy to carry in the trunk of your car. Whether you’re traveling or simply commuting, you can always have a charging solution at hand.

　　Durability: High-quality cable reels are built to withstand the elements and frequent use. They are typically made from robust materials that protect the internal wiring from wear and tear.

　　Safety: These cable reels often come with safety features such as thermal protection, overcurrent protection, and waterproof casings. These features help ensure safe and reliable charging, reducing the risk of electrical faults.

　　Flexibility: With a Type 2 to Type 1 charging cable reel, you can charge your EV at a wider range of locations. This is particularly useful in areas where Type 1 chargers are not as common.

　　Organization: The retractable nature of the cable reel keeps your charging cable organized and tangle-free. This not only extends the lifespan of the cable but also keeps your charging area neat and tidy.

　　Retractable Charge Cable Type 2 to Type 1 3.5KW to 7KW Electric Car Charging Cable Reel

　　How to Choose the Right Type 2 to Type 1 Electric Car Charging Cable Reel

　　Cable Length: Consider the length of the cable you need. A longer cable provides more flexibility in where you can park and charge your vehicle.

　　Amperage: Ensure the cable reel supports the amperage required by your EV. Most EVs require a minimum of 16 amps, but some may need up to 32 amps for faster charging.

　　Build Quality: Look for a cable reel made from high-quality materials. It should be durable, weather-resistant, and have robust connectors.

　　Safety Features: Check for built-in safety features such as thermal protection, overcurrent protection, and waterproof design.

　　Brand Reputation: Choose a cable reel from a reputable manufacturer known for producing reliable and high-quality EV accessories.

　　Optical fiber Internet access is a broadband Internet access method that transmits data through optical fiber. Optical fiber is a kind of slender wire made of glass or plastic, which can transmit optical signals. The bandwidth of optical fiber internet access is much higher than other internet access methods, which can reach hundreds of megabytes or even thousands of gigabytes.In the industry, fiber optic pigtail Has been a leader in the industry, but later came from behind but never arrogant, low-key to adhere to quality. https://www.fibercan-network.com/

　　Advantages:

　　High bandwidth: the bandwidth of fiber-optic Internet access is very high, which can meet all kinds of high-speed Internet access needs.

　　Good stability: because the quality of optical fiber transmission signals is very high, the stability of optical fiber Internet access is also very good.

　　Disadvantages:

　　Limited coverage: Due to the high construction cost of optical fiber, the coverage of optical fiber Internet access is still relatively limited.

　　Higher cost: Compared with other broadband internet access methods, the cost of fiber-optic internet access is relatively high.

　　Diving watches hold a special place in the world of timepieces. Combining rugged durability with sleek design, they are not only practical tools for underwater adventures but also fashionable accessories that appeal to collectors and enthusiasts. This blog explores the charm of diving watches, their key features, and how to maintain and troubleshoot common issues, helping you understand why these timepieces have gained such iconic status.So, mechanical watch On the contrary, there is still a lot of room to play. https://www.supertimewatch.com/

　　diving watches

　　1. Superior Water Resistance

　　One of the most notable features of a diving watch is its water resistance. These watches are designed to perform under pressure, literally. A true diving watch must meet specific standards, such as being water-resistant to at least 100 meters, although most modern models can withstand depths of 200 meters or more. This makes them ideal for both recreational divers and professionals.

　　The Charm:

　　Owning a watch that can survive extreme underwater conditions gives it a certain rugged appeal. Even if you’re not a diver, wearing a water-resistant watch adds a sense of adventure to your everyday life. Plus, you¨ll never have to worry about accidental water exposure during activities like swimming or hiking.

　　Troubleshooting Tip:

　　If you notice fogging or condensation inside the watch, it might indicate a compromised seal. This can happen due to wear and tear or accidental impact. Make sure to have the watch checked and resealed by a professional watchmaker, especially after a long dive or exposure to high-pressure environments.

　　2. Robust Build and Durability

　　Diving watches are built to withstand harsh environments. They are made from tough materials such as stainless steel, titanium, or even ceramic, which provide resistance to corrosion, scratches, and impacts. The sapphire crystal protecting the dial is highly scratch-resistant, ensuring that the watch remains as clear and readable as the day you bought it.

　　The Charm:

　　The robustness of a diving watch adds to its appeal. Its durability means it can handle rugged conditions, making it not just a watch but a reliable tool that can accompany you through life’s challenges. Whether you’re scaling mountains or diving deep into the ocean, your diving watch will keep ticking without missing a beat.

　　Troubleshooting Tip:

　　If your diving watch takes a significant hit or starts showing signs of wear, it¨s important to have it serviced. Scratches on the case can often be polished, and if there¨s any damage to the crystal, a professional watchmaker can replace it with a new one. Regular servicing ensures the watch maintains its durability and function over time.

　　3. Easy-to-Read Dial

　　Diving watches are known for their highly legible dials, with large hour markers and hands coated in luminescent material for visibility in low-light conditions. The bold designs ensure you can quickly tell the time, even in the murky depths of the ocean. The rotating bezel allows divers to track time spent underwater easily, a crucial safety feature.

　　The Charm:

　　The clear, easy-to-read design is not just practical but also aesthetically pleasing. The minimalistic yet bold look of a diving watch makes it a timeless accessory that pairs well with both casual and formal attire. The luminous glow in low-light environments adds an extra touch of sophistication.

　　Troubleshooting Tip:

　　If the luminescence on your watch fades or stops glowing, it may be due to a breakdown of the luminescent material over time. Consider having the watch re-lumed by a professional, especially if you rely on its night-time visibility.

　　4. Iconic Design and Style

　　Diving watches have a distinctive style that blends utility with elegance. Many famous brands, such as Rolex, Omega, and Seiko, have created diving watches that have become iconic, not just for their performance but for their design. The combination of ruggedness with refined details makes diving watches highly versatile, suitable for both extreme conditions and the office.

　　The Charm:

　　The ability of a diving watch to bridge the gap between functionality and fashion is one of its most attractive qualities. It symbolizes adventure, strength, and a certain level of sophistication. A well-crafted diving watch can elevate your wardrobe and give you a sense of confidence.

　　Troubleshooting Tip:

　　If the bracelet or strap shows signs of wear, it¨s easy to replace. Leather straps may not be ideal for diving, but rubber or metal bands offer durability and comfort. You can swap out the strap to suit your personal style or activity.

　　5. Precision and Reliability

　　Most diving watches are powered by automatic or mechanical movements, ensuring precision and reliability even in extreme conditions. These watches are engineered to keep time accurately despite external pressures, making them reliable tools not just underwater but also in your daily life.

　　The Charm:

　　The precision of a diving watch makes it a valuable tool, whether you¨re tracking dive times or just keeping your day organized. Knowing that your watch will keep running smoothly, regardless of the environment, gives it a sense of dependability that is hard to match with other types of timepieces.

　　Troubleshooting Tip:

　　If you notice that your watch is losing or gaining time, it may need regulation. Regular servicing by a qualified watchmaker can ensure the movement stays accurate. If you use the watch for diving, it¨s essential to have it checked and regulated annually to ensure it functions under pressure.

　　When using telegram” target=_blank> article “target=”_blank” > telegram, many users complained that they could not receive private messages” target=_blank> article “target=”_blank” > private messages. This may be caused by a variety of reasons, such as the article “target=”_blank” > unstable network connection, wrong account setting or problems with the application itself. This paper will explore these factors and provide effective solutions.In the long run, 电报下载 The value will be higher and higher, and there will be a great leap in essence. https://www.zvivw.cn/

　　relevant issues

　　Why can’t I check the private message I received?

　　How to check your network connection?

　　Is the setting of telegraph application correct?

　　solution

　　Confirm network connection

　　Network connection problem is one of the main reasons why telegrams can’t receive private messages. The network status can be detected and confirmed by the following steps.

　　(1) Check Wi-Fi or mobile data

　　Make sure the device is connected to Wi-Fi or using mobile data, and the network signal is good. Open the settings application of the mobile phone and click “Network and Internet” to see if the connected Wi-Fi name or data connection icon is displayed. If not, please reconnect, or try to turn off and turn on the network switch again.

　　(2) Testing other applications

　　Open other instant messaging applications or web pages. If these applications run normally, there is no problem with the network. If it doesn’t work either, it may be the fault of the network itself. You can try to restart the router and check whether the network service provider has a failure report.

　　(3) Using network diagnostic tools

　　If you are testing the network on a mobile phone, you can download applications such as “Ping” or “Wi-Fi Analyzer” to test the network status. These tools can help users identify delay and connection status, and ensure network stability.

　　Check telegraph settings

　　The internal settings of telegrams sometimes make it impossible to receive private messages. The following steps can help you confirm whether the settings are correct.

　　(1) Adjust the notification settings

　　In the telegraph application, open the settings and find the “notification and sound” option. Make sure that New Message Notification is turned on. If it is closed, the application will not be able to prompt the newly received message. At the same time, check whether any restriction options in Privacy and Security are turned on.

　　(2) Check whether it is mute.

　　If your group chat or private chat is set to mute, you may miss important news. In the chat interface, click the name of the other person to enter the chat information, and check whether mute mode is enabled in the settings. This may cause whatever message is received to be ignored.

　　(3) Update the telegram version

　　Make sure that the telegraph application is the latest version. Enter the App Store, search for “Telegrams” and see if there are any updates. After the update, restart the application to load new functions and fix possible bugs.

　　Restart applications and devices

　　If the above methods fail to solve the problem, try to restart the telegraph application or device.

　　(1) close and reopen the telegraph application.

　　Press and hold the telegraph application icon, select the “Close” option, and then reopen the application. This can help the application refresh the status and solve temporary problems.

　　(2) Restart the phone

　　Select Shutdown in the device settings, and wait for a short time before enabling the device. Restarting the phone can clear the cache and help the application run normally.

　　(3) clear the application cache

　　Find the telegram application in the phone settings, select “Store and Cache”, and then click “Clear Cache”. This will delete temporary data, which can sometimes solve the problem that the application can’t receive messages normally.

　　There are many reasons why telegrams can’t receive private messages. Through the above steps, we can effectively prescribe the right medicine to ensure the normal reception of information. At the same time, you can also consider setting different notification methods in the telegram to avoid missing important news. If you encounter more complicated problems, download the official telegraph customer service application or visit its website for more support. For those users who want to enjoy multilingual support, you can consider using the resources of Chinese version of paper airplane or Chinese version of telegram to improve their experience and ensure that they will not lose contact due to operational problems.

　　Through the step-by-step investigation and solution of the above methods, automatic support can help you to resume normal use of Telegram.

　　The feeling is to catch up with various gatherings, family gatherings, friends gatherings, classmates gatherings, etc. At these times, the most common entertainment activity is that four friends gather together to play mahjong, talk about the work in the past year, and brag. If you are a classmate who can’t play mahjong, it will be embarrassing. Therefore, in order to avoid this situation, Xiaobian specially arranged some basic knowledge that beginners of mahjong must learn to share with you, hoping to help you quickly understand and get started with the game. Next, let’s take a look!Therefore, this is the choice BL777 Casino Login The reason, there is no denying its positive impact. https://www.bl77777.com/

　　Basic knowledge of mahjong introduction:

　　First, mahjong tiles

　　1. Plate

　　 four winds: east wind, south wind, west wind and north wind;

　　 Three yuan: red, rich, whiteboard.

　　2. Order cards

　　 10,000: 1 to 90,000;

　　2 cakes: 1 to 9 cakes;

　　 Articles: 1 to 9.

　　3. Flower cards

　　 Spring, summer, autumn and winter, plum, orchid, bamboo and chrysanthemum.

　　The names of these mahjong tiles are all formal names. In some places, players have given these mahjong tiles some interesting names, such as: one is called Yaoji, the other is called nunchakus, the other is called pie, the second is called glasses, the fourth is called bench, and 90,000 is called 90,000, etc. In some places, the first and ninth mahjong tiles are collectively called Old Man tiles, and all the tiles between two and eight are called Old Man tiles.

　　Second, the mahjong combination

　　1, straight

　　Three cards of the same suit with continuous count value form a straight, such as one, two, thirty thousand, six, seven, eight, four, five, six and so on;

　　2. Pairs

　　Two cards of the same suit with the same point value form a pair, such as thirty thousand, thirty thousand, six or six barrels, eight or eight cards, etc.

　　3. Carving

　　Three cards of the same suit with the same point value form an engraving, such as three, three, thirty thousand, six, six, six tubes, eight, eight, eight and so on;

　　4, thick stick

　　Four cards of the same suit with the same point value form a barbell, such as three, three, three, thirty thousand, six, six, six, six, eight, eight, eight, eight and so on;

　　All these mahjong combinations are collectively called “partners”. We can make the above four partners by putting the cards in our hands together, and then put them together with the Hu card type specified in the mahjong rules.

　　The advancement of electronic devices has placed a significant demand on the capabilities of printed circuit boards (PCBs). Among the most prominent options are rigid and multilayer printed boards, which have emerged as essential components in modern circuit design. These PCBs are reshaping the future of electronics, offering innovative solutions for complex and high-performance applications.From the demand side, aluminum base pcb More in line with the psychological expectations of consumers, willing to pay for the things they like. https://www.hongmycircuits.com/

　　Understanding Rigid and Multilayer Printed Boards

　　Rigid printed boards are sturdy, inflexible boards commonly used in applications requiring durability and structural integrity. These boards provide a solid foundation for various electronic components and are widely used in consumer electronics, automotive systems, and industrial equipment.

　　On the other hand, multilayer printed boards feature multiple layers of conductive material sandwiched between insulating layers. These boards are compact, versatile, and designed for high-density and high-speed circuits, making them ideal for advanced applications such as telecommunications, aerospace, and medical devices.

　　Rigid and Multilayer Printed Boards Production of Printed Board

　　Advantages of Rigid and Multilayer Printed Boards

　　1.Compact Design

　　Multilayer boards enable the integration of complex circuits within a small footprint, saving space and supporting the trend toward miniaturization in electronics.

　　2.Enhanced Performance

　　The layered structure of multilayer PCBs reduces interference and improves signal integrity, critical for high-speed applications.

　　3.Durability

　　Rigid boards excel in environments that require stability and resistance to mechanical stress.

　　4.Versatility

　　Both rigid and multilayer boards are adaptable to various industries, from consumer electronics to aerospace.

　　Applications Driving Their Adoption

　　The increasing complexity of electronic systems has driven the demand for rigid and multilayer printed boards. For instance:

　　Automotive: Multilayer PCBs power advanced driver-assistance systems (ADAS) and electric vehicle (EV) components.

　　Medical: Rigid boards are used in diagnostic equipment, while multilayer boards are critical in compact medical devices.

　　Telecommunications: Multilayer boards support high-frequency communication devices and data transfer systems.

　　In modern vehicles, safety and visibility are critical considerations, especially when it comes to blind spots. A side view camera is a revolutionary tool that enhances driver awareness, reduces accidents, and improves overall driving experience. At SPNANMA, we specialize in advanced automotive safety solutions, including state-of-the-art side view cameras. Here¨s how this technology works and its significant benefits for drivers.With the upsurge of industry development, commercial vehicle camera The expressive force in the market has also been very good, bringing many brand-new high-quality experiences to users. https://szdfpls.com

　　side view camera

　　Enhanced Blind Spot Coverage

　　Traditional side mirrors have limitations, leaving blind spots that can pose risks, particularly during lane changes or turns. Side view cameras eliminate these blind spots by providing a real-time video feed of the vehicle¨s sides. This coverage ensures the driver can see areas that would otherwise go unnoticed.

　　High-Quality Imaging for Precision

　　SPNANMA side view cameras feature high-resolution imaging, ensuring clear visuals even in low-light conditions. Equipped with wide-angle lenses, these cameras capture an extensive field of view, significantly enhancing situational awareness.

　　Seamless Integration with In-Vehicle Displays

　　Our side view cameras are designed to integrate seamlessly with your vehicle¨s infotainment system or dashboard monitor. The video feed is activated when you use your turn signals, ensuring the side view is automatically displayed when needed.

　　Improved Safety in Tight Spaces

　　Navigating through narrow streets, tight parking spots, or congested traffic can be challenging. Side view cameras provide a detailed view of the vehicle¨s surroundings, reducing the risk of scrapes, bumps, or collisions.

　　Durable and Weatherproof Design

　　SPNANMA side view cameras are built to withstand harsh environmental conditions. With features like water resistance, anti-glare lenses, and robust housings, our cameras ensure reliable performance in any weather.

　　side view camera

　　Advantages of SPNANMA Side View Cameras

　　Increased Driver Confidence: Know exactly what¨s happening around your vehicle.

　　Cost-Effective Safety Solution: Reduce repair costs caused by blind spot-related accidents.

　　Easy Installation: Designed for compatibility with a wide range of vehicles.

　　Enhanced Aesthetics: Sleek designs that complement modern vehicle styles.

　　Applications Beyond Cars

　　While primarily used in cars, side view cameras are also essential for trucks, buses, and recreational vehicles (RVs). These larger vehicles have more significant blind spots, making side view cameras a critical safety feature.

　　Silk pajamas are a luxurious and delicate addition to any wardrobe, offering comfort and elegance. However, proper care is essential to maintain their softness, shine, and durability. If you¨re wondering how to wash silk pajamas without damaging the fabric, here¨s a basic guide to ensure your silk items remain as beautiful as the first time you wore them.Down-to-earth right high quality clothing factory In-depth research is the only way to pursue development. https://molisuxin.com/

　　Hand Washing vs. Machine Washing Silk Pajamas

　　When it comes to washing silk pajamas, hand washing is the safest option. Gently washing the fabric in cold water with a mild detergent ensures the fibers retain their natural luster.

　　However, if you prefer the convenience of machine washing, make sure to use a laundry bag to protect the delicate fabric. Choose a low-speed wash mode and a cold water setting to minimize the risk of damage.

　　Choosing the Right Detergent

　　The detergent you choose plays a significant role in how your silk pajamas hold up over time. Always opt for a mild detergent that is designed specifically for delicate fabrics. Harsh chemicals found in regular detergents can strip the silk of its natural oils, leading to wear and tear.

　　Drying and Storing Silk Pajamas

　　After washing, avoid wringing your silk pajamas, as this can distort the fabric. Instead, gently press out excess water with a towel and lay them flat to dry. Never use a tumble dryer, as high heat can damage the silk fibers. Store your silk pajamas in a cool, dry place, and consider using a breathable garment bag to protect them from dust and light exposure.

　　Additional Tips for Silk Care

　　Cold Water Only: Always wash silk pajamas in cold water to preserve the fabric¨s color and texture.

　　Avoid Direct Sunlight: Dry your silk pajamas away from direct sunlight to prevent fading and weakening of the fabric.

　　Ironing Silk Pajamas: If necessary, iron your silk pajamas on the lowest heat setting while the fabric is slightly damp to avoid damage.

　　Why Silk Pajamas from MoLi are Worth the Care

　　MoLi offers a wide range of custom silk pajamas that provide both style and comfort. With proper care, these luxurious items can last for years, making them a great investment. Our customized pajama options allow you to add personal touches that make your sleepwear unique, whether it¨s embroidery, specific designs, or fabric choices. Our team ensures the highest quality silk, giving you an unparalleled wearing experience.

　　Conclusion

　　Taking the time to properly care for your silk pajamas will ensure they remain in excellent condition, allowing you to enjoy their comfort and beauty for years to come. Whether you prefer hand washing or machine washing, always follow the correct care guidelines to maintain the silk¨s luxurious feel. Remember, how to wash silk pajamas is all about using the right tools, settings, and precautions. MoLi¨s custom silk pajamas are designed to be both stylish and durable, giving you the perfect blend of luxury and comfort.

　　When the PCM recognizes and identifies a problem a DTC for that fault is stored in its memory. These codes are intended to help you determine the root cause of the failure. The diagnostic codes that are required by law on all OBDII systems are standardized and all vehicle manufacturers use the same common code list. This means the misfire code P0300 represents the same failure on a Chevy, Chrysler, Ford, or Toyota.According to related reports, obd2 reader To a large extent, it leads the changes of market conditions. https://lonauto.com/

　　OBD II DTCs consist of a five-digit alphanumeric code. The DTC format and general code types are shown in this chart.

　　OBD II emissions related DTCs are from the powertrain and begin with P0xxx. P1xxx codes refer to manufacturer specific codes which often cover areas that are not emissions related and may not cause the check engine light to illuminate.

　　For P0xxx codes, the third character in the code identifies the system where the fault occurred. Numbers 1 and 2 are for fuel or air metering problems, 3 is for ignition problems or engine misfire, 4 is for auxiliary emission controls, 5 relates to idle speed control problems, 6 is for computer or output circuit faults, and 7 and 8 relate to transmission problems. Failures occurring in non-powertrain systems such as ABS, HVAC (Bxxxx, Cxxxx, Uxxxx codes) may be retrieved through the OBDII diagnostic link connector but do not illuminate the check engine light and are not involved with (NYVIP2) emissions inspections.

　　If the PCM commands the check engine light to illuminate there will be at least one P0xxx code stored in memory. However, in some cases you can have a situation where there is a P0xxx code in memory and the check engine light is not commanded to be illuminated. These codes are referred to as pending or maturing codes. Pending codes are caused by intermittent faults or faults that the PCM needs to see happen in two consecutive warm-up cycles to set the code. If the fault does not reappear within 40 warm-up cycles, the code will be cleared from memory. If the fault reappears for the specified number of times, the code will then mature into a diagnostic trouble code (DTC) and the PCM will command the check engine light to illuminate.

　　When a pending code is stored in the PCMs memory, freeze frame data is also captured. The freeze frame data will give the repair professional the actual operating conditions that were occurring when the fault triggered. This data allows for duplication of conditions so you can hopefully isolate the fault. The pending code feature is also helpful in trying to figure out why a particular system monitor will not set. The component or process that is the subject of the pending code is often involved as part of the enabling criteria to successfully complete a monitor.

　　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.pass optical cable As can be seen from its market performance, it has strong vitality and strong appeal. 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.