Abstract
Digital coherent optical systems promoted profound changes in optical communication networks, simplifying their operation and increasing their spectral efficiency. This chapter offers a historical perspective on the evolution of optical communication systems, from the invention of optical fibers, passing through four technological generations, and reaching fifth-generation digital coherent optical systems. We also discuss the candidate technologies for the sixth generation of optical systems, especially those based on spatial division multiplexing (SDM). Finally, this chapter also discusses the insertion of coherent technologies in today’s flexible optical networks with wavelength routing. We introduce wavelength selective switches and review the most relevant architectures of reconfigurable optical add-drop multiplexers.KeywordsDigital coherent optical systemsWavelength division multiplexingCoherent detectionDigital signal processingWavelength routingWavelength selective switchesTranspondersReconfigurable add-drop multiplexers
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.