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1. Step index fiber is of two types viz; mono mode fiber and multi mode fiber.
Graded index fiber is of only of one type that is multi mode fiber.
2. The refractive index of the core of the step index fiber is constant through out the core.
The refractive index of the core of the graded index fiber is maximum at the center of the core and then it decreases towards core-cladding interface.
3. Number of modes for step index fiber N = V2/2, where V is cut off frequency or normalized frequency or V- number
Number of modes for graded index fiber is N = V2/ 4.
4. V number can be less that 2.405 or more that 2.405 for step index fiber
V number is always more than 2.405 for graded index fiber.
5. Step Index Fiber is a fiber in which the core is of a uniform refractive index and there is a sharp decrease in the index of refraction at the cladding.
Graded Index Fiber is a type of fiber where the refractive index of the core is lower toward the outside of the fiber. It bends the rays inward and also allows them to travel faster in the lower index of refraction region. This type of fiber provides high bandwidth capabilities.
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What is used in optical fiber communication?
WDM wavelength division multiplexing
What are the disadvantages of using optical fiber instead of copper wire for communications?
Optical fiber carries signals through light, and therefore at light speed, the fastest possible, and gets less hot. Copper wire transmits information using electricity, which although fast, is not nearly as fast as light. Fiber optics allows faster transmission of data.
What is he difference between 10Gbase SR and 10Gbase LR?
SR (Short hul) is a multimode fiber while LR (Long hul) is a single mode fiber, the SR spans much shorter distance than the LR
A fiber tract that provides for communication between the cerebrum and the CNS area?
If the fiber tract connects the cerebral cortex and the lower brain or spinal cord then it is referred to as a projection tract.
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What is the difference between fiber optics and optical fiber?
Fiber and fibre mean the same thing. The only difference is that fiber is derived from American English, and fibre is derived from European English.
What is different between optical fiber signal and electrical signal?
A fiber optical signal is based on the transfer of photons, while an electrical signal is based on the transfer of electrons.
What the diffirence between Optical fiber cable G652 and G655?
G 655 used fiber long distance SM fiber G655, and G652 short distance used, G652 Nonzero fiber
Does the gauge of fiber optical audio cable affect the audio quality?
No. As long as the signal is getting through, the gauge of the optical connection makes no difference.
Difference between active and passive optical component?
Active optical components require power to operate and perform functions such as amplification, modulation, or conversion of optical signals. Passive optical components, on the other hand, do not require power and perform basic functions such as splitting, combining, or routing optical signals without any signal manipulation.
Difference between monofilament fiber and multifilament fiber?
monofilament
What is the optical range of optical fiber?
40 GHz
What is the significance of normalized frequency in optical fiber?
If V is less than 2.405 then the fiber is mono mode but if V is greater than 2.405 then fiber is multimode. V number is also related with the number of modes is the fiber as: N = V2/ 2 for step index fiber and Number of modes for graded index fiber is N = V2/ 4.
What is the difference between passive star and active repeater in fiber network?
A passive star has no electronics. The light from one fiber illuminates a number of others. An active repeater converts the optical signal to an electri- cal one for further processing.
Is cross talk is possible in optical fiber?
One of the advantages of optical fiber is that it is NOT susceptible to cross-talk.
How does an optical transmitter sends signals to the optical fiber?
Usually, there is a laser diode that is optically coupled to the fiber.
Objective type question on optical fiber?
An objective type of question on optical fiber is on that focuses on the integral part of fiber optic. A good question would be, " Why are optical fibers immune to EMI? "
