Passive Optical Amplifiers: EDFA, SOA and RFA

As optical signals travel through an optical fiber, they are attenuated. In long-haul applications, the signal is attenuated to the point where re-amplification is required. Traditionally, a device commonly referred to as a repeater accomplished this re-amplification. A repeater is basically a receiver and transmitter combined in one package. The receiver converts the incoming optical […]

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Advanced Optical Components – Erbium-doped Fiber Amplifier (EDFA)

Many fiber optic applications, such as long-haul DWDM systems, require amplification of the optical signal. In the past, this entailed using expensive electronic repeaters at intermediate points every 100 km. Today’s modern long-haul DWDM systems use several advanced optical components to replace multiple repeaters with a single optical device. These optical devices which are called […]

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Optical Amplifiers have Revolutionized the Long-distance Fiber Optic Communications

In situations wherein the primary issue is loss, optical amplifiers can indeed be used to amplify the signals without conversion into the electrical domain. Such Optical Amplifiers have truly revolutionized long-distance fiber optic communications. The purpose of an optical amplifier is to restore the signal power level, reduced due to losses during propagation, without any […]

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