瑞东电子

  The so-called dense is relative to the interval between two adjacent wavelengths. In the past, the wavelength interval of the   wavelength division multiplexing system   was several tens of nanometers. Now the wavelength interval is only 02 to 1.2 nm. The spectrum allocation is shown in Figure 2-1. DWDM technology is actually a specific form of wavelength division multiplexing. Generally, the wavelength division multiplexing system refers to the   dense  wavelength division multiplexing system . There are many kinds of equipment used in the optical wavelength division multiplexing transmission system, and the realization method of each equipment module is different. In practical application, the selection of equipment should be selected according to the actual situation and the focus of system performance. In general, DWDM system has 5 basic parts: optical transmitter/receiver,  wavelength division multiplexer , optical amplifier, optical monitoring chann...

 DWDM (Dense Wavelength Division Multiplexing) is an ideal optical multiplexing technology for long-distance data transmission, which can put multiple channel information using a single wavelength on the same fiber and greatly improve the transmission capacity of optical networks. At present, DWDM technology is widely used in telecommunication networks and has become the choice of many telecommunication operators. Since the inception of DWDM, various devices and techniques have been used to enhance the high performance of each component in the DWDM network. DWDM multiplexers and demultiplexers are the main devices responsible for multiplexing and demultiplexing data sources. DWDM multiplexers and demultiplexers have been rapidly upgraded over the past few years to overcome insertion loss and meet the growing demand for faster telecommunications, and they are consistently used by today's vendors (also known as DWDM multiplexers) are combined in one rack. As a serious optical communi...