Basically what the optical fiber ribbon machine solve will be the traditional distance problem as in any long-distance telecommunication system such as a trans-Atlantic link. As optical signals travel from the fiber, the signals become weaker in power. The farther you are going, the weaker the signal become until it becomes too weak being detected reliably.
Fiber optic communication systems solve this concern by utilizing fiber amplifiers along the way. A repeater or amplifier is inserted to the system in a point the location where the signal is becoming weak, to increase the potency of the signal so it may be transmitted through another period of fiber cable. Many amplifiers or repeaters may be placed in sequence to help keep the signal strong across the whole fiber link.
Traditionally, electronic repeaters were used for optical signal amplification. A repeater is surely an opto-electro-opto device. It converts a weak optical signal into electronic signal, cleans in the electronic signal, and after that converts the electronic signal back to optical signal by using a lightwave transmitter. The lightwave transmitter emits much stronger power in comparison to the incoming optical signal and consequently amplifies it.
However, it is an inconvenient and dear process and which is why it has been replaced through the new optical fiber amplifiers technology.
An optical fiber amplifier is a purely optical device. It doesn’t convert the incoming optical signal to electronic signal whatsoever. Basically, it is possible to call it a in-line laser. And SZ stranding line can simultaneously amplify a large number of optical channels because they tend not to convert each channel into electronic signals separately.
The atoms of erbium or praseodymium might be pumped by high power light (pump laser) into excited state. However are not stable from the excited state. As soon as the optical signals that should be amplified pass though the fiber, they stimulate the excited erbium atoms. The erbium atoms will jump from your high power level excited state into low power level stable state, and release their energy in the form of emitted light photons concurrently. The emitted photons have similar phase and wavelength because the input optical signal, thus amplify the optical signal.
This is a very convenient type of amplifier on an optical fiber communication system since it is an in-line amplifier, thus removes the need to do the optical-electrical and electrical-optical conversion process.
The pump laser wavelengths and the corresponding optical signal wavelengths are key parameters for operation of fiber amplifiers. These wavelengths depend on the type of 12dextpky element doped in the Sheathing line and also to the composition of the glass from the fiber.
Another significant term in understanding fiber amplifiers is its “gain”. Gain measures the amplification per unit duration of fiber. Gain is dependent upon both materials and the operating conditions, plus it varies with wavelength for all materials.
For low input powers, the output power is proportional to the gains times the fiber length. Thus, P(output) = P(input) x Gain x Length
For top input powers, the gain saturation effect comes into play. So increment of input power produces less output power, which essentially means the amplifier has use up all your the ability it requires to generate more output.