Evaluation of Signal Regeneration Impact on the Power Efficiency of Long-Haul DWDM Systems

Abstract

Due to potential economic benefits and expected environmental impact, the power consumption issue in wired networks has become a major challenge. Furthermore, continuously increasing global Internet traffic demands high spectral efficiency values. As a result, the relationship between spectral efficiency and energy consumption of telecommunication networks has become a popular topic of academic research over the past years, where a critical parameter is power efficiency.The present research contains calculation results that can be used by optical network designers and operators as guidance for developing more power efficient communication networks if the planned system falls within the scope of this paper. The research results are presented as average aggregated traffic curves that provide more flexible data for the systems with different spectrum availability. Further investigations could be needed in order to evaluate the parameters under consideration taking into account particular spectral parameters, e.g., the entire C-band.

Investigation of Power Efficiency Changes in DWDM Systems Replacing Erbium-Doped Amplifiers By Semiconductor Optical Amplifiers

“…(5) where X refers to specific parameter of either EDFA or SOA system, PE x -power efficiency [W/Hz], BW x -utilised spectral bandwidth [Hz], P x -total power consumption [W]. (6) Unlike results of the previous studies [14], [15], [18], power consumption of ROADM terminals was not included in total power consumption calculations, focusing on system components that required defining the amount of used power and emphasising signal generation and regeneration power needs.…”

“…The information collection and processing methodology remains similar and has been described in more detail in previous studies [14], [15]. Only input data and system parameters have been changed in accordance with the aims of the present research.…”