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Abstract
This paper presents experimental results for an all-optical free-space optical (FSO) relay-assisted system by employing an all-optical regenerate and forward (AORF) scheme in order to increase the transmission link span. The ultra-short pulse (i.e., 2 ps) regeneration technique based on Mamyshev method is adopted. We have developed a dedicated experimental test-bed composed of optical fiber components and FSO links to demonstrate the proposed scheme and evaluate its performance in terms of the Q-factor and bit error rate (BER) under turbulence regimes for both single and dual-hop network architectures. We show that, using the AORF a hundred times improvement in the BER performance is achieved compared to the amplify-and-forward scheme for a fixed signal-to-noise ratio under turbulence conditions.
Highlights
Free-space optical (FSO) communication technologies can offer similar capabilities as optical fiber communications and can be considered as a promising candidate for the "last mile" access networks in the generation broadband wireless communication networks [1, 2]
This paper presents experimental results for an all-optical free-space optical (FSO) relay-assisted system by employing an all-optical regenerate and forward (AORF) scheme in order to increase the transmission link span
We have developed a dedicated experimental test-bed composed of optical fiber components and FSO links to demonstrate the proposed scheme and evaluate its performance in terms of the Q-factor and bit error rate (BER) under turbulence regimes for both single and dual-hop network architectures
Summary
Free-space optical (FSO) communication technologies can offer similar capabilities as optical fiber communications and can be considered as a promising candidate for the "last mile" access networks in the generation broadband wireless communication networks [1, 2]. Even though the AF is the simplest relaying scheme, the optical amplifier boosts both the signal and noise at each relay, imposing a limit on the number of relays that can be employed over a long FSO span due to reduced SNR To overcome this problem, an all-optical regenerate-and-forward (AORF) technique is introduced in this paper, which can be adopted at each relay in order to increase the transmission link span as part of the last miles access wireless networks in urban areas.
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