cwdm multiplexer

://s3.51cto.com/wyfs02/M02/6C/1B/wKioL1VATsnh6_eoAADNjI_b_b8004.jpg "style=" width : 600px;height:420px; "title=" w0200810182005412015194.jpg "width=" "height=" 420 "border=" 0 "hspace=" 0 "vspace=" 0 " alt= "Wkiol1vatsnh6_eoaadnji_b_b8004.jpg"/>Wavelength Division Multiplexing (WDM) and Multiplexer (also known as wave/splitter) are applied to both ends of optical fiber, respectively, to realize the coupling and separation of different light waves. Th

like a pipe, it's a channel. The channel is different from the flow where the channel is bidirectional and can be used for reading, writing, and simultaneous read and write operations.The underlying operating system's channels are generally full-duplex, so Full-duplex channel can better map the underlying operating system APIs than streaming.Channel mainly divided into two major categories: Selectablechannel: User Network Read-write FileChannel: for file operations The Serversocketchannel and s

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

Server TuningThe core component of WebLogic server consists of a listening thread, a socket multiplexer, and an execution queue of executable threads. When a server receives a connection request from a listener thread, its connection control is handed over to the socket multiplexer waiting to receive the request. The socket multiplexer then reads the request to l

multiplexing API. The typical programming pattern for the Multiplexed API for NIO is as follows:Open a Serversocketchannel, listen on port 8080 for Serversocketchannel server = Serversocketchannel.open (); Server.bind (new Inetsocketaddress ("0.0.0.0", 8080));//Create a multiplexer selector selector = Selector.open ();//register serversocketchannel on a multiplexer and declares that it is concerned about i

an operation and let the kernel notify us after the entire operation is complete, including copying the data from the kernel to the user's own buffer area. The difference between an asynchronous IO model and a signal-driven IO Model: signal-driven IO is the kernel's notification of when an IO operation can begin; The asynchronous IO Model notifies us when the IO operation has been completed. The core concept of NiOBuffer buffers: All data is treated with a buffer. A buffer is essentially an arr

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

Step One: Open Socketchannel, bind the client-local address (optionally, the default system will randomly assign an available local address), the sample code is as follows:Socketchannel Clientchannel = Socketchannel.open ();Step two: Set Socketchannel to non-blocking mode while setting the TCP parameters of the client connection, the sample code is as follows:Clientchannel.configureblocking (FALSE);Socket.setreuseaddress (TRUE);Socket.setreceivebuffersize (buffer_size);Socket.setsendbuffersize (

-white list filtering, handshake, and other operations; After step 2 is complete, the business layer's link is formally established, the Socketchannel is removed from the reactor thread's multiplexer on the main thread pool and re-registered on the thread of the sub thread pool to handle I/O read and write operations. 2. Netty Threading Model 2.1. Netty Threading Model ClassificationIn fact, the threading model of Netty is similar to the thre

third-party software information Compat: Storing functions that may be used Access Dshow:directshow get Plug-ins for WinDOS platform DVB: Using V4L2API input module for dvb-s/c/t media streaming MMS: MMS and HTTP Capture module TCP,UDP for RTSP: Based on real-time streaming transport protocol Screen: Get the image of the input module VCD: Get the VCD data input module VCDX: Get the VCD input module, you can navigate, still Audio-filter Channel-mixer: Various mixers, decoders, such as dobly deco

Multiplexing (WND) is the use of two or more different wavelengths of optical carrier signals (carrying various information) at the transmitter through the multiplexer (also known as the Wave-filter, multiplexer) converge and coupled to the transmission of the same fiber in the optical circuit; at the receiving end, the Multiplexer ( Also known as the splitter o

Channel Multiplexing Technology Multiplexing is the basic concept of communication technology, as shown in the following illustration, if a multiplexer is used at the transmitter, it can be combined to communicate using a shared channel. At the receiving end of the use of the distributor, the combined transmission of information sent to the corresponding end point. When communicating, the multiplexer is alw

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

responsibility is to handle all channel registrations on the selector of this thread multiplexer Set the Nioserversocketchannel. Netty creating Nioserversocketchannel objects with reflection through the factory class Setting TCP Parameters Create and initialize the Channelpipeline when the link is established. It is essentially a chain of responsibilities that handles network events and is responsible for managing and executing Channelhandler.

), close (close), the file event corresponding to the operation is generated, and the file event handler invokes the associated event handler before the socket to handle these events. CompositionThe four components of the file event handler, which are sockets, I/O multiplexers, file event dispatcher (dispatcher), and event handlers, respectively.Four components of a file event handlerA file event is an abstraction of a socket operation that produces a file event whenever a socket is ready t

The design pattern of the object behavior class, sorting and distributing synchronization events. Alias Dispatcher(dispenser) The reactor pattern is a common pattern for handling concurrent I/O, and is used for synchronous I/O, with the central idea of registering all I/O events to be processed on a central I/O multiplexer while the main thread blocks on the multiplexer; once i/ o The event arrives or is re

The Iolinux kernel will treat all external devices as a single file, and read and write to a file invokes the kernel system command, putting back a filename descriptor ( File descriptor), the read-write to a socket will also have a corresponding descriptor, called socketfd java NiO core class library Multiplexer selector is based on Epoll multiplexing technology implementation NBSP;I/O multiplexing technology enables multiple client requests to be

Java.nio.channels.socketchannel;import Java.sql.Date;import Java.util.iterator;import Java.util.set;public class Multiplexertimeserver implements Runnable {private Selector Selec Tor Private Serversocketchannel Servchannel; Private volatile Boolean stop; /** * Initializing multiplexer, binding listening port */public multiplexertimeserver (int port) {try {//create multiplexer Selector

for NIO is that when a connection is created, it does not need to correspond to a thread, this connection will be registered on the multiplexer, so all the connections need only one thread can be done, when the multiplexer in this thread polling, found the connection on the request to open a thread to handle, That is, a request for a threading pattern. In the process of NIO, when a request comes in, open t

read/write of the new socket whenever the accept call on the main thread returns. The advantage of this model is that the program logic is concise and conforms to the human mind; The disadvantage is that the scalability is limited by the number of threads, and as more and more threads are connected, frequent thread switching can seriously slow down performance and have to deal with multi-threaded synchronization issues. Async Model: Asynchronous models generally use non-blocking I