Choosing the transmission equipment is the next step in the design of a fiber-optic network. This step is usually a collaboration opportunity between the client, who knows the types of data that need to be transmitted, the designer and installer and the manufacturers of the transmission equipment. The transmission equipment and the cable network are closely related.
The distance and bandwidth will help determine the type of optical fiber that is needed, and that will depend on the optical interfaces of the cable network. The ease of choosing the equipment may depend on the type of communication equipment needed.
In the world of telecommunications, standards for optical fiber have been applied for 30 years, so that those involved in the process have extensive experience in the development and installation of equipment. Almost all telecommunications equipment complies with industry conventions, so you may find equipment for telecommunication transmission for short links (in general, metropolitan area networks that can reach 20 or 30 km) and for Long-distance links as extensive as networks installed below the sea. They all work with single-mode fiber, but they can specify different types of this fiber.
Fiber optics technician
The shorter telecommunications links use 1310 nm lasers in common single-mode fibers, called G.652 fibers, which is an international standard. Longer distances use displaced dispersion fiber, optimized to operate with 1500 nm lasers (G.652 fiber). In almost all installations one of these two options is used. Most telecommunications companies offer both options.
Most CATV links are AM (analog) systems that are based on special linear lasers, called distributed feedback lasers (DFB), which use 1310 nm or 1550 nm and operate on common single mode fibers. As the CATV approaches digital transmission, it will begin to use more of its own telecommunications technology, which is already completely digital.
The distance and bandwidth will help determine the type of optical fiber that is needed, and that will depend on the optical interfaces of the cable network. The ease of choosing the equipment may depend on the type of communication equipment needed.
In the world of telecommunications, standards for optical fiber have been applied for 30 years, so that those involved in the process have extensive experience in the development and installation of equipment. Almost all telecommunications equipment complies with industry conventions, so you may find equipment for telecommunication transmission for short links (in general, metropolitan area networks that can reach 20 or 30 km) and for Long-distance links as extensive as networks installed below the sea. They all work with single-mode fiber, but they can specify different types of this fiber.
Fiber optics technician
The shorter telecommunications links use 1310 nm lasers in common single-mode fibers, called G.652 fibers, which is an international standard. Longer distances use displaced dispersion fiber, optimized to operate with 1500 nm lasers (G.652 fiber). In almost all installations one of these two options is used. Most telecommunications companies offer both options.
Most CATV links are AM (analog) systems that are based on special linear lasers, called distributed feedback lasers (DFB), which use 1310 nm or 1550 nm and operate on common single mode fibers. As the CATV approaches digital transmission, it will begin to use more of its own telecommunications technology, which is already completely digital.
No comments:
Post a Comment