1. Application comparison.  Although, driven by the demand for higher bandwidth in the data center, optical fiber accounts for a large share of its deployment in the data center with the advantages of higher transmission rate and larger bandwidth, especially in the backbone application network, in fact, copper cable will still be an indispensable part of the data center, and copper cable can not be replaced by optical fiber in special environment applications such as voice transmission and power supply.  2. Unique advantages of copper cable.  In the comprehensive horizontal cabling within 100 meters, optical fiber is inferior to copper cable in maintenance, cost, cabling and so on.  The core in optical fiber is a special type of glass fiber, which is more fragile than copper in copper cable. In wiring and post-maintenance, optical fiber will be easily damaged and its cost will increase if you do not pay more attention to it. According to the current market situation, although the price of optical fiber has decreased, it is generally higher than the price of copper cable; therefore, compared with optical fiber, the wiring and maintenance of copper cable is more convenient and low cost.  In the application of power supply, such as voice signal transmission and wireless access, POE power supply system, optical fiber can not replace copper cable.  First, because copper cable, unlike optical fiber, transmits data through electrical pulses and can support voice signals, copper cable can be used for voice transmission, while optical fiber is not.  Second, because the glass fiber used in optical fiber can not conduct electricity, and the copper in copper cable can conduct electricity, copper cable can supply power while making data connection, so it is widely used in wireless access, POE power supply system, LED-based power system and so on.  In addition, modular plug termination links (MPTL) have been approved in the TIA-568.2-D standard as an option to connect devices, a move that will promote the growth of RJ45 copper cable applications, especially in surveillance systems using IP cameras.  At the same time, the 28AWG specification network jumper is added in the appendix to this specification, and the smaller copper cable will contribute to the circulation of air and the use of space, so that it can be developed in high-density applications.

  SeikoFire Company supplies optical fiber fusion splicer to China Unicom to maintain the normal operation of optical fiber communication lines. The high quality splicing machine ensure the efficiency of line repair and maintenance, and improve the standard of installation and maintenance. In the new year, As fusion splicer manufacturer we will strive to improve our advantages and make greater contributions to the communications industry.

Currently, Wi-Fi 7 brings improvements over Wi-Fi 6e in terms of speed, which is 2.4 times faster if the same number of antennas are used on Wi-Fi 7 products as on Wi-Fi 6e. The Wi-Fi 7 standard will also significantly reduce latency, which will help improve application experiences that are important every millisecond, such as games. However, the Wi-Fi Alliance is still "in the early stages of the Wi-Fi 7 standardization process" and there is no way to say exactly when the Wi-Fi 7 standard will be finalized. It is rumored that the Wi-Fi 7 standard is expected to be "released in the second quarter of 2022". According to this schedule, the technology is expected to be available in 2023. Huawei has the largest number of Wi-Fi 7 technologies in the world, surpassing Qualcomm and Intel. According to Huawei, the new generation of WiFi 7 will be unveiled in 2022. Huawei's website shows that Huawei is constantly expanding more WiFi 7 related technologies. Compared with WiFi 6, the new WiFi 7 channel has a bandwidth of up to 320MHz and the highest transmission rate up to 30Gbps. WiFi 7 (Wi-Fi 7) is the upcoming next-generation Wi-Fi standard, also known as IEEE 802.11bemuri-it has ultra-high throughput (EHT). Based on Wi-Fi 6, Wi-Fi 7 introduces technologies such as 320MHz bandwidth, 4096 orthogonal amplitude modulation (QAM), multi-resource unit (RU), multi-link operation (MLO), enhanced multiuser multiplexing and so on. Input multiple output (MU-MIMO) and multiple access points (AP) coordination. With these cutting-edge technologies, Wi-Fi 7 provides higher data rates and lower latency than Wi-Fi 6. Wi-Fi 7 is expected to support up to 30 Gbps of throughput, about three times that of Wi-Fi. -- Huawei. Last week, EDN Electronic Technology Design also reported that "MediaTek's preview Wi-Fi V7 technology demonstration is 2.4 times faster than that of the Wi-Fi 6e." Why do we need Wi-Fi 7? With the development of WLAN technology, families and enterprises rely more and more on Wi-Fi for network access. In recent years, emerging applications have put forward higher requirements for throughput and delay. Typical examples of these applications include 4K and 8K video (involving transmission rates of up to 20 Gbps), virtual reality (VR) / augmented reality (AR), online games (requiring latency of less than 5 milliseconds), telecommuting, online video conferencing, and cloud computing. In the face of such high requirements, Wi-Fi 6mura-the latest Wi-Fi standard-is not enough despite its efforts to improve the user experience in high-density scenarios. As a result, IEEE is about to release a new amendment called IEEE 802.11be EHT, also known as Wi-Fi 7. Wi-Fi 7 release time. The IEEE 802.11be Task Force (TGbe) was officially established in May 2019, dedicated to the development of 802.11be (Wi-Fi 7). The standard will be available in versions 1 and 2. TGbe plans to release draft 1.0 of 802.11be in 2021, and version 1 will be available by the end of 2022. Version ...

1. Select the wrong fiber splicing program; for example, wrongly select the single-mode splicing program as multi-mode; 2. The cutting angle of the end face of the optical fiber is too large; 3. The optical system is dirty, mainly the mirror and the objective lens are dirty; 4. The V-groove is dirty, and the fiber presser foot is dirty; 5. The aging of the electrode leads to too weak discharge intensity; too strong electrode discharge can also lead to excessive welding loss. 6. Displacement of the discharge position leads to excessive welding loss; 7. The horizontal position of the optical fiber is shifted; 8. Changes in the technical parameters of the fusion splicer will also cause excessive splicing loss; 9. Dust into the CCD will also cause excessive splice loss;   10. Irregular fiber coils in the splice tray and unreasonable installation of fiber splice tubes;

From "best effort" to "certainty" For a long time, because of the attribute of IP protocol, mobile Internet provides "best-effort" service. In the 4G era, because the Internet mainly connects people, this "best-effort" approach can meet people's connection needs. After all, slight network delays and packet losses generally do not affect our experience of online shopping or even watching videos online. However, the connection range of 5G and 6G networks will expand from people to everything, which requires that the network must be able to provide low delay and high reliable deterministic services, otherwise it may affect the continuous and stable production of enterprises. For this reason, 5G can provide end-to-end network service capability that SLA can guarantee by introducing network slicing, MEC and other technologies. Facing the future 6G era, as the network penetrates into more industries and more scenes, it is necessary to further enhance the deterministic service capability of the network. Openness and customization. On the one hand, it is well known that openness and sharing are the core spirit of the Internet, and promote the continuous prosperity and development of the Internet; on the other hand, mobile communication networks have been using more proprietary technology, and the ecology is more closed. To some extent, it limits its own development. In the 5G era, in order to enable the digital transformation of various industries, mobile networks must promote the integration of CT and IT with a more open attitude, so as to give birth to rich industry innovation applications and promote ecological prosperity. As we can see today, 5G has been integrated with cloud computing, edge computing and AI technology, and has hatched a large number of industry applications such as AI quality inspection, 5G remote control and so on. Leading operators and suppliers have created open and flexible MEC edge cloud platforms that open network capabilities, IT capabilities, tools and application components through API, allowing third-party developers and industry partners to quickly customize the development, deployment and launch of new applications according to their business needs. Entering the 6G era, this open and customized capability will continue to evolve, and will provide industry customers with more agile and friendly services through the API interface to better meet the needs of customers to configure the network and customize applications. Artificial intelligence network. Today, artificial intelligence has been applied in many fields, such as AI image recognition, speech recognition and automatic translation. On the one hand, with the continuous development of network services, there are more stringent requirements for network delay, reliability, user experience and other KPI indicators; on the other hand, as the network becomes more and more complex, it becomes more challenging to maintain and improve networ...

No matter how strong the base station is, it can't run without electricity.  In order to supply power to the base station, the operator has to coordinate with the power company to introduce external electricity to the site and be equipped with a storage battery as a backup power source.  However, the introduction of this project by out-of-city power has a long period and high cost. in the base station construction, the introduction or transformation period is often too long, which will affect the opening progress of the base station.  Today, wireless charging technology has been widely used, it gets rid of the shackles of long charging lines, so that we can charge the mobile phone as soon as we put it, which greatly facilitates our daily life.  Can the base station use wireless power like mobile phones?  Recently, Ericsson announced a partnership with laser innovation company PowerLight to showcase the world's first wireless-powered 5G base station.  Ericsson said the proof of concept (PoC) test uses a laser-based technology that converts electricity into a high-intensity beam, which is then captured and converted into electricity at the base station side, thereby replacing the base station's power line to the grid and improving the speed and flexibility of base station deployment.  How far is the transmission distance?  The demonstration uses Ericsson 5G millimeter wave base station equipment Streetmacro 6701 and uses PowerLight's laser technology to transmit hundreds of watts of energy over a distance of several hundred meters.  Ericsson said that this successful demonstration marks the first step in a milestone, and the next step is to achieve longer-distance transmission of kilowatt energy.  How's the security?  It is said that the laser beam has a virtual shield, and when a creature or object passes through its propagation path, the shield will automatically activate, temporarily turn off power transmission, and quickly switch the power supply of the base station to the battery.  This technology uses wireless transmission instead of power supply lines, which can help operators quickly open base station stations, especially for the rapid deployment of urban pole stations and microstations, and is also very suitable for emergency communication security scenarios.  In addition, it can also provide convenient power for unmanned AGV, drones, sensors and other IoT equipment.  Remote charging with laser beam is not a new technology.  It is reported that as early as 2018, the research team at the University of Washington first developed a way to use lasers to safely charge smartphones.  The team installed a thin battery on the back of the smartphone, demonstrating the use of a laser beam to charge the battery over a long distance.  In addition, similar to the "virtual shield" function demonstrated by PowerLight and Ericsson, the team also designed a security feature...

  Broadband telecommunications system: It is based on fiber optic cables and uses optoelectronics to deliver multiple high-end services such as telephone triple play, broadband Internet and TV to homes or businesses. Optical fiber communication is widely used as a medium for information transmission due to its unique anti-interference, light weight, and large capacity. However, it is the most economical and most effective to use the existing transmission lines to lay optical cables. Because optical fiber communication has the advantages of large capacity, long distance and resistance to electromagnetic interference, optical fiber communication is well adapted to the needs of today's power communication development. Especially the optical fiber composite overhead ground wire (OPGW), which combines the high mechanical, high conductivity and good corrosion resistance of the aluminum clad steel wire, effectively combines the power overhead ground wire with the communication optical fiber, so it is affected by the power system industry. Attached importance to, and gradually being promoted and used. Because optical fiber communication has the advantages of large capacity, long distance and resistance to electromagnetic interference, optical fiber communication is well adapted to the needs of today's power communication development. Especially the optical fiber composite overhead ground wire (OPGW), which combines the high mechanical, high conductivity and good corrosion resistance of the aluminum clad steel wire, effectively combines the power overhead ground wire with the communication optical fiber, so it is affected by the power system industry. Attached importance to, and gradually being promoted and used. There are many architectures for fiber to the home, of which there are two main ones: one is a point-to-point topology, which uses an optical fiber from the central office to each user; the other is passive optical that uses a point-to-multipoint topology. Network (PON), the use of point-to-multipoint solutions can greatly reduce the number of optical transceivers and fiber consumption, and reduce the rack space required by the central office, which has cost advantages and has now become the mainstream.

Optical fiber splicing is a meticulous work, especially in the end-face preparation, fusion splicing, fiber coiling, and other links, requiring careful observation, careful consideration, and operating specifications. In the fiber splicing test, it is fully understood that the splicing technology is more than just looking at the data, and you can master it by simply learning. In the practice of repeated welding, we must peel off the technical points and master them proficiently. In the test, I also learned that you can't do things lightly, and you have to be careful and serious. In daily work, we should learn from the rich experience, to see, think, and analyze the standard details and the main points of the welding when the colleagues do the welding. General optical cable splicing steps: The first step: stripping the cable; when stripping the optical cable, straighten the two ends of the optical cable first, generally use a utility knife to peel off the protective layer of the optical cable at the end of the optical cable from 80cm to 100cm, remove the coreless tape group, and leave a 10cm reinforced core for use For fixed optical cables; Step 2: Fix; fix the stripped optical cable to the fixed equipment of the connector box, open the optical cable connector box, unscrew the screw, and place the optical cable on the fixed equipment. The belt set should be placed clockwise and horizontally with the fiber tray. To ensure that it will not cause damage to the core. The fiber optic cable should be fixed firmly, and the reinforced core should be bent at 90 degrees to prevent damage to the fiber core by pulling; Step 3: Splicing the fiber; after fixing the optical cable, peel off the protective layer of the core at the specified position. When removing, remove the protective layer of the core with one hand, and wipe the core with the other hand and place it in a standard manner. After finishing all the cores, put a heat shrinkable tube on each core. Take out the fusion splicer and other equipment tools and turn on the fusion splicer. Use a fiber stripper to strip the fiber. After peeling a fiber core, gently pull it to check whether the fiber core is intact. During the splicing process, ensure that the core is clean, wipe the core with alcohol, and then use the cutter. The cross-section of the processed core should be clean and tidy to ensure the successful splicing. In the case of not knowing the core of the transceiver fiber, it should be spliced in order according to the standard order of the core (blue, orange, green, brown, gray, white, red, black, yellow, purple, light pink, light blue). When using the fusion splicer, the operation should be standardized, and the protective cover should be covered after the fiber core is put in to prevent dust from falling in, which may cause fiber fusion failure. The core loss rate of the melted fiber should be less than 0.03dB. Step 4: Reel the fiber; according to the specifications of the fiber reel, place the...