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Microgrid and Factors to be Considered in Its Planning
What is a Microgrid For the convenience of operation, maintenance and management, the fiber optic access network in the city is usually constructed in sections by region. The integrated service access area is divided in the metropolitan area, and the microgrid is further divided in the integrated service access area. The trunk optical cable line
Overhead Optical Cable Construction Guidelines
In the communications industry, how to construct overhead optical cable is a problem that many front-line communications construction workers will encounter. If we can reduce failures and increase the service life of optical cables by carrying out communication optical cable construction in a standardized manner, it is worth understanding and learning for us telecommunications construction
Composition and Principle of Wavelength Division Multiplexer (WDM)
Wavelength division multiplexing (WDM) is a technology that combines two or more optical carrier signals of different wavelengths (carrying various information) at the transmitting end through a multiplexer (also called a combiner, Multiplexer) and couples them to the same optical fiber of the optical line for transmission; at the receiving end, the optical carriers of
Why is The Cost of MWDM Relatively High?
MWDM refers to medium wavelength division multiplexing, which is based on the first 6 wavelengths of CWDM. The center wavelength of each channel is shifted up and down by 3.5nm to form 2 new channels, supporting a total of 12 channels. Since the working wavelength of MWDM is similar to that of CWDM, these wavelengths
Types and Differences of Communication Poles
Communication poles, also known as electric poles or telegraph poles, are supporting structures in power or communication line systems. They are usually made of wood, reinforced concrete or other materials and are used to carry and support overhead lines. Before the 1970s, most of the communication poles used were antiseptic wooden poles. At that time,
Bending Resistance Difference between G.657 and G.652 Optical Fiber
G.657 optical fiber is also known as bending loss insensitive optical fiber. The optical cable that is thinner than ordinary telephone lines used to connect FTTH uses G.657 optical fiber. Without G.657 optical fiber, there would be no large-scale application of FTTH. G.657 optical fiber is divided into multiple subcategories, and the most commonly used
Impact of Insufficient Fiber Bending Radius on ODN Link Loss
Under normal circumstances, the downstream attenuation of the ODN link loss should be about 0.13dB/km lower than the upstream attenuation. GPON networks use 1490nm/1310nm wavelengths for downstream and upstream, respectively. The main fibers used in ODN (optical distribution network) are G.652D and G.657A2. The attenuation of these two fibers at 1490nm/1310nm wavelengths is 0.23dB/km and
What is Network Coverage Capacity of Optical Cable Distribution Frame?
The optical cable distribution frame is the interface device of the trunk optical cable node in the optical fiber access network. After the optical cable is introduced into the optical cable distribution frame, it is fixed, fused, and wired, and then the network connection between the trunk layer and the wiring layer is realized using
Types and Differences of Communication Pipelines
At present, compared with overhead optical cables in the suburbs, urban optical cables are mainly laid through underground communication pipelines. Communication pipelines are generally composed of pipe groups buried under the surface and manholes (handholes) at both ends of the pipe groups, as shown in Figure. The pipe group is usually composed of one or