Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/26518
Author(s): | Diogo G. S. Cancela, L. Rebola, J. |
Date: | 2018 |
Title: | Physical layer impairments in cascaded multi-degree CDC ROADMs with NRZ and nyquist pulse shaped signals |
Volume: | 1 |
Book title/volume: | ICETE 2018 - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications |
Pages: | 223 - 231 |
Event title: | 15th International Joint Conference on e-Business and Telecommunications, ICETE 2018 |
Reference: | Diogo G. S., Cancela, L., & Rebola, J. (2018). Physical layer impairments in cascaded multi-degree CDC ROADMs with NRZ and nyquist pulse shaped signals. ICETE 2018 - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications (pp. 223-231). |
ISBN: | 978-989758319-3 |
Keywords: | ASE noise Broadcast and select In-band crosstalk Nyquist pulse Optical filtering ROADMs Route and select |
Abstract: | Nowadays, reconfigurable optical add/drop multiplexers (ROADMs) are mainly based on broadcast and select (B&S) and route and select (R&S) architectures. Moreover, the most used components to implement the colorless, directionless and contentionless (CDC) ROADM add/drop structures are the multicast switches (MCSs) and the wavelength selective switches (WSSs). In-band crosstalk, amplified spontaneous emission (ASE) noise accumulation and optical filtering are physical layer impairments (PLIs) that become more enhanced in a CDC ROADM cascade. In this work, we investigate the impact of these PLIs in a cascade of CDC ROADMs based on both B&S and R&S architectures, with MCSs and WSSs-based add/drop structures and for nonreturn-to-zero (NRZ) and Nyquist pulse shaped signals. We show that the optical filtering impairment is more limiting for a R&S architecture. We also show that the ASE noise accumulation after 32 cascaded ROADMs leads to a 10 dB optical signal-to-noise ratio (OSNR) penalty. Finally, we conclude that the in-band crosstalk introduced in CDC ROADMs based on B&S is more harmful than with a R&S architecture. An OSNR penalty of 1 dB due to in-band crosstalk, is reached after 13 and 24 cascaded 16-degree CDC ROADMs for, respectively, NRZ and Nyquist pulse shaped signals. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | IT-CRI - Comunicações a conferências internacionais |
Files in This Item:
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conferenceObject_48493.pdf | 566,1 kB | Adobe PDF | View/Open |
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