optical meaning

Brief history of Optical Fibers As early as 1841, Daniel Colladon of Switzerland first elaborated on the idea of transmitting a beam through a water jet. Then, through a beam in the water flow across the table, he realized light propagation in the water flow through total reflection, and created the original idea of transmitting information through optical transmission. In 1880, engineer William Wheeler lig

purchase of vrouters, vswitches, and other network devices is also very important.Internet cafes have diversified network application types and have high requirements on network bandwidth, transmission quality, and network performance. network applications must integrate advanced, multi-service, scalability, and stability, it not only meets customers' needs for simultaneous transmission of voice, video, and data over a broadband network, but also supports a variety of new business data processi

Vswitch Optical Fiber ports are divided into many types, and their functions are quite different. Here we will mainly introduce some basic knowledge about common optical fiber ports of vswitches. Cascade uses both common ports and special MDI-II ports. A straight-through cable should be used when the two ports that are cascaded are normal ports (MDI-X) ports and MDI-II ports, respectively. Cross-cable shoul

Cutting-edge Cable TechnologyAdd the colored optical fiber and oil paste to the rubber sleeve tube made of high modulus plastic at the same time, the optical fiber can be moved in the casing. The cable core is made by adding a strong core along the center of different cable casings. The cable core and protective materials are added to the cable.The main features of the cable are:The rubber sleeve pipe mater

After the installation of the cable wiring system, the link transmission characteristics need to be tested, among which the main test items are the attenuation characteristics of the link, the insertion loss of the connector, the return loss and so on. The following is a brief introduction to the measurement of key physical parameters of optical cable wiring and troubleshooting and maintenance in the network. First, the key physical parameters of the

Option meaning of info. plist, meaning of info. plist 1. application does not run in background (container name: UIApplicationExistsOnSuspend) from the end of iOS4.0, when you apply the program line, press Home terminal, the application does not parse the current line, but hides in the background. Therefore, if you want to download the current program line after you press Home then, check this option. 2. A

This may be used in the shell, including DOS.Null is something called a null bucket, and the benefit of redirecting the output to it is that the file size is not constantly increasing due to too much content in the output. In fact, you think that null is nothing, that is, the output of the command is discarded.1 indicates standard output, 2 indicates standard error output, 2>1 indicates the standard error output is redirected to standard output, so that the normal output and error output of the

The meaning of the forest root domain in the domain tree, and the meaning of the domain forest root domain Contoso has many IT resources in the company's IT environment, and these IT resources are all in a state of decentralized management, which virtually increases the management cost of contoso, moreover, the management system cannot be implemented in the actual production environment. So how can we solv

Chapter eighth Introduction to object-oriented programmingThe contents of this chapter:What is object-oriented programmingOOP technologyThe Windows forms application's dependency on OOP8.1 Meaning of object-oriented programmingThe programming method described earlier, called function (or procedural) programming, often leads to so-called single applications, where all functions are contained in several code modules (often a code module). with OOP, many

Android Log Tag meaning, androidlogtag meaning One of the most important methods to analyze Android problems is to analyze logs in events. there are many system logs in the log, some of which are not very familiar with the meaning. The following is the system log tag obtained from the android source code. The Tag description is as follows: "30005 am_create_activi

? I. zoon's meaning and division principles ???? The function of Zoon in an optical fiber storage switch is similar to that of an Ethernet switch VLAN. It is mainly used to divide multiple logical zones in a switch to prevent storage connections of different applications from initiating broadcast packets, improves the utilization of Optical Fiber switches. ???? I

1 Introduction Automatically Switched Optical Network (ASON) is a new type of network that can automatically connect to the network. It consists of three planes: control plane, transfer plane, and management plane. The control plane technology is its core. It can implement dynamic exchange using the control plane. GMPLS generic Multi-Protocol Label Exchange (MSTP) is a common Multi-Protocol Label Exchange Technology proposed by IETF, which is extended

Many people may not be very familiar with the optical fiber cabling technology. This article will give you a comprehensive introduction to this technology, the advantages of the optical fiber cabling technology and the problems that need to be paid attention to in practical application will also be explained. In the realization of broadband access to various optical