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Today's communication networks are composed of multiple interconnected optical and electrical components to support high-speed video, voice, and data transmission. The backbone of the network is optical fiber. Its design and manufacture are used to optimize attenuation and dispersion, making the network the most cost-effective and cost-effective network. A new optical fiber design is widely accepted in the global communication industry, that is, low water peak LWP) optical fiber. The low water p

different wavelengths simultaneously in the same optical fiber. 3. CWDM (coarse Wavelength Division Multiplexing) and DWDM (Dense Wavelength Division Multiplexing) The design of the communication system varies with the interval width of each wavelength. Based on the channel interval, WDM can be subdivided into CWDM (coarse Wavelength Division Multiplexing) and DWDM (Dense Wavelength Division Multiplexing )

means of resizing the current optical fiber communication network. As a system concept, Wavelength Division Multiplexing technology usually has three kinds of Multiplexing methods, namely, Wavelength Division Multiplexing and Coarse Division Multiplexing (CWDM, Coarse Wavelength Division Multiplexing) at 1 310 nm and 1 550 nm wavelengths) and Dense Wavelength Division Multiplexing (DWDM, Dense Wavelength Division Multiplexing ). (1) wavelength divisi

multimode.The difference between Singlemode and multimodeGeneral manufacturers will be in the color of the pull ring to distinguish, for example: Black pull ring for multimode, Wavelength is 850nm, blue is the wavelength of 1310nm module, yellow is the wavelength 1550nm module, purple is the wavelength 1490nm module.Optical Module ClassificationXFP Optical ModuleSelectable wavelength: 850NM,1310NM,1270NM,1330NM,CWDM,DWDMRate: 10GXFP (Gigabit Small Fo

the recovery function of SDH network. Mippo Ethernet: Enables Ethernet networks to be transmitted through multiple wavelengths or multiple light waves or a single optical fiber, thereby greatly increasing network capacity. CWDM: Compared with DWDM, CWDM is more suitable for building a metropolitan network, it transmits a small number of wavelengths in one fiber, while

participated in the database implementation and operation of Vplex bi-active and ASM double-live, and has a practical experience to talk about the two current dual-activity programs.First, we talk about the main differences between extended RAC and common RAC. Mainly distance, distance is to prevent such as natural disasters, terrorist attacks and other data center damage, another database center can still provide services. However, the distance will bring additional network and IO delay, so th

High-density and highly integrated OTN Wavelength-Division transmission SystemThis wave division multiplexing technology in the heyday, a variety of new technologies emerge. The goal is the same, that is to meet the network era of the operators. Long long ago, can only use CWDM coarse wave points, channel number is not enough to say, transmission distance is also very limited, line and equipment attenuation calculation,10G no relay transmission Kilo

. provides unified and effective network management to improve the level of network operation services and reduce operation costs;5. Lower network construction costs and faster deployment capabilities. Through thinking about the above issues, as the mainstream manufacturer of access equipment, ruisida proposed the concept of building a converged access network through the multi-service access network platform-that is, using MSAPMulti-ServiceAccessPlatform) product Series and integrated network m

layer, frame-based and VLAN-based access control, and RACL on the third layer;City Ethernet:A private VLAN is a Cisco proprietary technology. It is used to isolate hosts in the same VLAN. The management is complex and the scalability is poor;PVLAN can be divided into the primary VLAN and the secondary VLAN. The secondary VLAN can be divided into the isolated VLAN and the ac vlan;PVLAN port: public port, isolation port, and AC port. The isolation port can only communicate with public ports (only

cable access distance, improve access to bandwidth, to achieve universal user width with business access. For a small number of large customers high bandwidth access requirements (such as 10M, 20M or more bandwidth), the use of optical cable access transmission. Therefore, in the implementation of "light into the copper back", combined with integrated access to the network planning to make access to the layer of optical cable planning and construction, the optical junction point and access to t

channels in a relatively reasonable range. 4X 3G-SDI Optical Extension between the 4-channel fiber, can be used in the easy-flying 3G CWDM Optical module and home-made CWDM passive multiplexing module, very easy to achieve the use of a fiber transmission, easy to fly can provide a complete set of optical fiber transmission solutions. For 4K ultra-Gao Qingqi belt applications, easy to fly at the same time

Effective Area and low dispersion maintenance, and its PMD value is extremely low, so that the capacity of the existing transmission system can be easily upgraded to 10 ~ 40 Gbit/s, and easy to use Distributed Raman effect amplification on optical fiber, greatly extending the optical signal transmission distance. 2) New Low-peak optical fiber for man Communication In the metropolitan area network design, you must consider simplifying devices and reducing costs, and consider the possibility of n

DWDM/CWDM interface to work with optical transmission. The performance was constantly improved. It supports RPR networking technology, MPLS, and fast Spanning Tree Protocol, the integrated data, voice, and video services that can be managed and Intelligently Based on the IP platform will be gradually implemented, qoS, security, content distribution, MPLS, and other business features and solutions support will be the ultimate direction of Ethernet dev

through Multi-Service Access Platform-that is, using MSAP (Multi-Service Access Platform) product Series and integrated network management platform to achieve four types of integration: Business integration: In addition to meeting the access needs of user voice, video, industry applications, OA, Internet, and other businesses, it can also provide channels for the increasing 3G businesses, helps achieve rapid deployment of 3G networks; Technology Convergence: MSAP provides PCM, PDH, SDH, Etherne

"Water peaks", the entire band from 1, 260nm to 1, 620nm can be used, and through the use of economical and practical coarse Wavelength Division Multiplexing (CWDM) technology, data transmission rate can be expanded in the future and other services can be provided. When the data center needs to be quickly configured or reconfigured, The SYSTIMAXInstaPATCHPlus system is undoubtedly the best choice. It has the features of high density, factory connecti

of transmission products and provides interfaces such as Ethernet over SDH and CWDM. Therefore, R8000 can use a single device to implement the functions of multiple devices, maximizing the cost of network construction and maintenance for operators. R8000 adopts the network processor-based distributed forwarding architecture and has fully programmable capabilities. It can implement flexible service generation and customization functions and provide ne

service ports of the aggregation Layer Nodes and reduce network costs. At present and in the future, the TDM business will remain the most important source of revenue for telecom operators, and there is still room for growth. When the business needs are dominated by TDM business, create a convergence layer for the Metro Transmission Network to use MSTP. If the existing SDH network still has a large amount of remaining capacity, it can meet the needs of future TDM business development, and when

is also the main working band of the current practical optical fiber communication system. The main parameters of 1310nm conventional single-mode optical fiber are determined by the ITU ITU-T in G652 recommendations, so this kind of optical fiber is also called G652 optical fiber. As mentioned above, because of the absorption effect of OH peaks (Water peaks), 900 ~ 1300nm and 1340nm ~ There is a loss peak in the 1520nm range, which is called a water peak. Currently, the TeraSPEEDTM zero-water p

transmission rate, including 8 gbabit Fiber Channel and 10GbE. Introduced the SFP + module version of optical fiber and copper core, Compared with the Xenpak, X2, or XFP version of the module, the SFP + module retains some circuits on the main board, rather than in the module. SFP type SFP transceiver has a variety of different sending and receiving types. You can select an appropriate transceiver for each link to provide available optical fiber types (such as multimode or single-mode

require long-distance, high-density, GB embedded optical connections. MSA uses coarse Wavelength Division Multiplexing (CWDM) technology to provide four 25G Single-Mode Optical Fiber (SMF) link channels. Similarly, the OpenOptics MSA organization launched by Ranovus and Mellanox Technologies will focus on developing a data center that supports 2 km and GB. In the past, the speed improvement promoted the development of most network components. Today,