Friday, February 14, 2020

Optical fiber wires.

In a fiber optic transmission system there is a transmitter that is responsible for transforming electromagnetic waves into optical or light energy, which is why it is considered the active component of this process. Once the light signal is transmitted by the tiny fibers, at another end of the circuit there is a third component called the optical detector or receiver, whose mission is to transform the light signal into electromagnetic energy, similar to the original signal.

The basic transmission system is composed in this order, of the input signal, amplifier, light source, optical corrector, fiber optic line (first section), splice, fiber optic line (second section), optical corrector, receiver, amplifier and output signal.

In summary, it can be said that this communication process, the optical fiber works as a means of transporting the light signal, generated by the transmitter of LED'S (light-emitting diodes) and laser.

Light-emitting diodes and laser diodes are suitable sources for fiber optic transmission because their output can be quickly controlled by means of a polarization current. Besides its small size, its luminosity, wavelength and the low voltage needed to handle them are attractive features.

Devices implicit in this process
The main blocks of a fiber optic communications link are the transmitter, receiver, and fiber guide. The transmitter consists of an analog or digital interface, a voltage to current converter, a light source and light to fiber source adapter.

The fiber guide is an ultra-pure glass or a plastic cable. The receiver includes a fiber-to-light sensor connector device, a photodetector, a current-to-voltage converter, a voltage amplifier, and an analog or digital interface. In a fiber optic transmitter, the light source can be modulated by an analog signal Fiber optic jobs near me
Coupling impedances and limiting the amplitude of the signal or in digital pulses. The voltage to current converter serves as an electrical interface between the input circuits and the light source.

The light source can be an LED light-emitting diode or an ILD laser injection diode, the amount of light emitted is proportional to the excitation current, therefore the voltage to current converter converts the input signal voltage into a current that is used to direct the light source. The source to fiber connection is a mechanical interface whose function is to connect the light source to the cable.

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