@inproceedings{SchlosserWernerSchlenketal.2014, author = {Schlosser, Michael and Werner, Axel and Schlenk, Ralph and Jungel, Tobias and Lange, Christoph}, title = {Demonstrating energy-efficiency improvements in load-adaptive dynamic multilayer optical networks}, volume = {248}, booktitle = {Tagungsband Photonische Netze}, publisher = {VDE-Verlag}, pages = {42 -- 46}, year = {2014}, abstract = {The discussion about sustainability and climate change as well as the energy cost perspective of network operators gives increasing attention to the energy efficiency of telecommunication networks. A promising way to improve the energy efficiency of such networks is the load-adaptive operation in which the network capacity is adjusted to the actual timevarying traffic transport needs. In this paper the concept of load-adaptive operation in the core network is explained, with the respective underlying optical network and the associated mathematical optimization. Within the DESI project a demonstrator has been realized with a commercially available WDM/OTN system. As results, concrete proven power and energy savings and the projected savings for a nationwide multilayer core network are reported.}, language = {en} }