1,721,113 research outputs found
Periodic dispersion compensation of soliton wavelength division multiplexed transmissions with sliding filters
No full textPolarization evolution and instability in a twisted birefringent or spun nonlinear optical fiber
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Theory of Noise Squeezing in Optically Amplified Systems Operating in Normal Dispersion Region and Applications to the Links Encompassing Semiconductor Optical Amplifiers
No full textPerformance Evaluation of Otpical Non-Return To Zero Transmission Systems: an Analytical Approach
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Reduction of the Detrimental ASE Noise Effect in Optical Communication Systems by Means of Unusual Modulation Instability
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Energy-efficient routing and wavelength assignment in translucent optical networks
No full textWe study the energy-efficient routing and
wavelength assignment (RWA) problem in translucent
WDM networks, taking into account transmission limits
of optical signals and the consequent need for signal regeneration.
The problem is formulated through an integer linear
programming model, and a heuristic algorithm called
least regeneration first (LRF) is proposed to solve it in large
networks. We first show that taking into account physical
layer impairments and the consequent possible regeneration
is mandatory to achieve satisfactory energy efficiency
inRWA algorithms. In this respect, results show that LRF is
much more efficient than “impairment unaware”RWA algorithms.
Then, we assess the energy efficiency achievable
with different modulation formats using the proposed LRF
algorithm in single-line-rate networks. Finally, the case of
mixed-line-rate networks is also considered, and a heuristic
method is proposed to efficiently decide the set of connections,
at different bit rates, to be assigned to each traffic
demand, with the goal of minimizing the total consumed
power. Results show that this method is able to achieve
power saving up to 25%
Limits of Nonlinear Optical Transmission Systems Induced by the non-Ideal Behaviours of the Transmitter
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