Optical Amplifier EDFA can be applied in a variety of system applications at various locations in a communication channel. Power boosters (for transmitters), in-line amplifiers, and optical pre-amplifiers are three typical uses for optical amplifiers.
Applications for Booster Amplifiers
The booster (power) amplifiers are positioned at the optical transmitter side to increase the transmitted power level or to make up for losses of optical components such as optical couplers, splitters, WDM multiplexers, and external optical modulators between the laser and optical fibers. To put it another way, the booster amplifiers are employed to increase the transmitter's strength before it enters the fiber link. The longer link distance may be achieved by using the greater transmitter power.
A laser diode or tunable laser source's output power is typically moderate, especially when an external modulator is utilized. A high saturation output power is the booster's distinguishing characteristic. The booster should also provide bit-pattern effect-free data signal amplification. All signals in WDM systems should be amplified uniformly across the spectrum. In general, booster amplifiers are polarization sensitive. Since the polarization of the incoming signal is known, this is not a problem for boosters. You can buy Optical Attenuator online.
To make up for the losses experienced during the propagation of the optical signal, in-line amplifiers are positioned along the transmission link. To combat fiber transmission and other distribution losses, they are applied at the link's intermediate points. In an optical transmission system, an in-line amplifier mostly makes up for fiber losses or splitter losses. It amplifies a weak input signal before retransmitting it down the fiber. Because the input signals are feeble, the saturation output power and noise figure are the most crucial performance characteristics. Better system outcomes will be achieved by managing noise and small-signal performance.
The system length will be constrained by the noise that amplifiers in series add. Due to the unpredictable state of polarization inside a network, the gain should have a minimal polarization dependency. Additionally, the in-line amplifier must manage many wavelength channels at once. Additionally, the in-line amplifier should handle the data signal transparently, which implies that it should be able to amplify any type of modulation format at any data rate without noticeably degrading it. In addition, since in-line amplifiers could be installed outside of network central offices, there is raising demand for reduced wall-plug power usage. You can get Optical Switch at an affordable price online.
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