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INTRODUCTION
A form of optical amplifier used in fibre-optic communication systems to increase the signal strength of optical transmissions is a hybrid Raman-EDFA (Erbium-Doped Fiber Amplifier) amplifier. Raman amplification and EDFA amplification are two separate amplification methods that are combined in this process.
Using a pump laser to activate a Raman scattering process in the fiber, Raman amplification is a nonlinear optical process. As a result, energy from the pump laser is transferred to the optical signal, strengthening it. Despite its great efficiency, Raman amplification is constrained by the amount of pump power available and nonlinear effects that may cause signal quality to suffer.
On the other side, EDFA amplification is a linear technique that amplifies the optical signal using the rare earth element erbium. The available pump power and saturation effects can restrict the overall gain even if EDFA amplifiers are highly effective and can deliver high gain.
The hybrid Raman-EDFA amplifier can offer high gain and efficiency while minimising the nonlinear and saturation effects by merging these two amplification methods. While the EDFA amplification can offer great gain and efficiency, the Raman amplification can aid to strengthen the signal without adding more noise.
When the signal strength needs to be increased across long distances, hybrid Raman-EDFA amplifiers are frequently utilised in long-haul optical transmission systems. Additionally, they are employed in wavelength division multiplexing (WDM) systems, which carry several optical signals over a single fibre.
GLOBAL HYBRID RAMAN-EDFA AMPLIFIER MARKET SIZE AND FORECAST
Global Hybrid Raman-EDFA amplifier market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
NEW PRODUCT LAUNCH
The XLA is a novel programmable EDFA circuit pack from Ciena that can be remotely programmed to switch between high and low gain modes [1]. With the XLA, Ciena’s Smart Raman solution may optimise system performance and expand reach by 25–40% [1]. It also overcomes the drawbacks of prior Raman solutions.
Researchers have established that a hybrid Raman/EDFA amplifier is more stable than an EDFA amplifier for fibre-optic time and frequency synchronisation systems[2]. Additionally, they created a bidirectional Raman/EDFA hybrid amplifier with an equivalent noise figure of less than 0 dB[2].
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