Routed optical networks

Hello folks, Simple question: does "routed optical networks" have a clear meaning in the metro area context, or not? Put differently: does it call to mind a well-defined stack of technologies in the control and data planes of metro-area networks? I'm asking because I'm having some thoughts about the clarity of this term, in the process of carrying out a qualitative survey of the results of the metro-area networks survey. Cheers, Etienne -- Ing. Etienne-Victor Depasquale Assistant Lecturer Department of Communications & Computer Engineering Faculty of Information & Communication Technology University of Malta Web. https://www.um.edu.mt/profile/etiennedepasquale