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Why do optical signals used in fiber optic cables have a very short wavelength?
Wiki User
∙ 7y ago
The pulses of light used in optical fiber are in the infrared or visible spectrum, which is shorter wavelength than the microwave radio spectrum. Neither microwave radio wavelengths nor ultraviolet spectrum wavelengths can pass through the materials used for fiber optic cables.
In the early 1950s A. T. & T. had begun laying a system of a few thousand miles of underground microwave waveguides (similar in purpose to modern underground fiber optics systems) but the system was never finished and ultimately proved to be not cost effective. But the cost per foot of fiber optic cables is nearly negligible compared to the cost of metallic waveguides, the diameter of fiber optic cables is much smaller compared to the diameter of waveguides allowing many more cables in the same space as one waveguide, and the shorter wavelength allows wider bandwidth signals on each of these fibers than the waveguide could carry.
Perhaps someday fibers might be able to be made of material that can allow ultraviolet spectrum wavelengths to pass and even wider bandwidth signals could be sent, but not now.
Wiki User
∙ 7y ago
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Is G652D a standard for fiber optics cables?
yes this uses a 1300/1550 nm wavelength.
Electronic signals are converted into what when transmitted through fiber optic cables?
depends on the purpose of the device
How polymers can used as optical materials?
1) Plastic (Polymer) Optical Fiber is used to transmit signals down a flexible, plastic material. 2) Polycarbonate coatings are used on optical discs to prevent scratching the underlying surface that has the actual pits and lands.
How is a message transmitted through a glass fiber?
Different types of information are transmitted from one place to another by signals of light pulses through optical fibers.
Optical signals in optical cables have short wavelength why?
Because the attenuation of the fiber is much less at those wavelengths.
Why do optical signals used in optic fiber cabel have a short wavelength?
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What part of the spectrum carries TV signals through optical fiber cables?
Fiber optic cables carry light, not radio frequency energy. Somewhat like comparing apples to nuts.
What is the advantage of optical fiber over electric cables?
Optical fiber's main advantage over regular electric cables is that they don't experience electromagnetic interference of any kind, thus allowing signals to be sent where regular cables would get cut off. Another important advantage is that distance affects electric cables' data bandwidth much more severely than it does optic fiber.
Are noise and interference major propagation problems for optical fiber propagation?
No. Fiber is immune to electrical interference; there is no cross-talk between signals in different cables and no pickup of environmental noise.
How does an optical transmitter sends signals to the optical fiber?
Usually, there is a laser diode that is optically coupled to the fiber.
What is a optical?
An optical microscope is what is commonly known as compound microscope.
Depth of laying optical fiber cables?
100 cm
What is used in optical fiber communication?
WDM wavelength division multiplexing
Is optical fiber unidirectional?
The optical fiber can be used both as unidirectional and bidirectional. The main application of optical fiber is in long-distance links, so there exists no need to employ them as unidirectional. For each direction different wavelengths are used to modulat the signals. At the same time many bidirectional signals can travel through the same optical fiber.
Which device convert light signals on fiber optic cables into voltage?
fiber conventer
What protocols is used for sending digital data over fiber optic cables?
Fiber optic cables are nothing but another transmission medium. All the protocol which works on Ethernet cable will work in Fiber optic cable also. In case of Ethernet, the digital data will be sent in electrical signal format. But Fiber Optic cables are passive devices. They can not conduct electrical signals. So the digital data signals needs to be converted to Optical signal before sending that via fiber. Usually after the conversion process, the header will be added. This header will be added by the originating device of the optical signal and will be removed by the receiving optical device before sending that signal via Ethernet or some other transmission medium..
