26
May
Optical Fiber vs Copper Wires
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Optical Fiber
An optical fiber is a cylindrical optical waveguide that transmits light over a distance. It has better communication performances than copper wire.
The central part of an optical fiber is called the core, which transmits light; the outer part is called the cladding, which prevents light from leaking out. The core is doped with germanium to make it have a higher refractive index than the cladding, thereby confining the light inside the core. Some types of optical fiber are also doped with fluorine to lower the refractive index of the cladding. The outer side of the cladding is coated with a soft material, and the outer side of the cladding is coated with a hard material. The double coating protects the quartz part from external damage while maintaining its flexibility.
Compared to copper wires, optical fibers are:
(1)smaller in diameter and lighter in weight;
(2)less susceptible to electrical noise and interference;
(3)extremely low transmission loss, enabling long-distance transmission;
(4)extremely narrow optical pulse width. Since it can be switched on and off at high speed, high-speed, large-capacity communication is possible.
A fiber optic cable is made by bundling of optical fibers (optical fiber cores, optical fiber cords) and applying a protective coating called a sheath. Fiber optic cables are used for communication purposes and are essential for realizing the information and communication infrastructure that supports the evolution of AI and IoT (Internet of Things).
An optical fiber is a cylindrical optical waveguide that transmits light over a distance. It has better communication performances than copper wire.
The central part of an optical fiber is called the core, which transmits light; the outer part is called the cladding, which prevents light from leaking out. The core is doped with germanium to make it have a higher refractive index than the cladding, thereby confining the light inside the core. Some types of optical fiber are also doped with fluorine to lower the refractive index of the cladding. The outer side of the cladding is coated with a soft material, and the outer side of the cladding is coated with a hard material. The double coating protects the quartz part from external damage while maintaining its flexibility.
Compared to copper wires, optical fibers are:
(1)smaller in diameter and lighter in weight;
(2)less susceptible to electrical noise and interference;
(3)extremely low transmission loss, enabling long-distance transmission;
(4)extremely narrow optical pulse width. Since it can be switched on and off at high speed, high-speed, large-capacity communication is possible.
A fiber optic cable is made by bundling of optical fibers (optical fiber cores, optical fiber cords) and applying a protective coating called a sheath. Fiber optic cables are used for communication purposes and are essential for realizing the information and communication infrastructure that supports the evolution of AI and IoT (Internet of Things).
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