Friday, February 14, 2020

Fiber optic in detail

In these fibers, the core is constituted by a uniform material whose refractive index is clearly higher than that of the surrounding shell. The passage from the nucleus to the deck, therefore, implies a brutal variation of the index, hence its stepped index name.

Connector types

Fiber optic in detail
These elements are responsible for connecting the fiber lines to an element, whether it is a transmitter or a receiver. The types of connectors available are very varied, among which we can find are the following:
Fiber optics technician
FC, which is used in data transmission and telecommunications.
FDDI is used for fiber-optic networks.
LC and MT-Array that are used in high-density data transmissions.
SC and SC-Duplex are used for data transmission.
ST or BFOC is used in building networks and security systems.
Light beam emitters: These devices are responsible for converting the electrical signal into a light signal, emitting the light beam that allows data transmission, these emitters can be of two types:
LEDs They use a current of 50 to 100  mA, its speed is slow, it can only be used in multimode fibers, but its use is easy and its lifetime is very large, besides being economical.
Lasers This type of transmitter uses a current of 5 to 40  mA, they are very fast, it can be used with both types of fiber, single-mode and multimode, but on the contrary, its use is difficult, its lifetime is long but shorter than the of the LEDs and they are also much more expensive.
Electric light-current converters. These types of devices convert the light signals that come from the optical fiber into electrical signals. They are limited to obtaining a current from the incident modulated light, this current is proportional to the power received, and therefore, to the waveform of the modulating signal.
It is based on the opposite phenomenon of recombination, that is, on the generation of electron-hollow pairs from photons. The simplest type of detector corresponds to a PN semiconductor junction. The conditions that a photodetector must meet for its use in the field of communications are the following:

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