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Diogo G. Sequeira, Cancela, L. & Rebola, J. (2018). Physical layer impairments in cascaded multi-degree CDC ROADMs with NRZ and nyquist pulse shaped signals. In ICETE 2018 - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications. (pp. 223-231). Porto

D. G. Sequeira et al.,  "Physical layer impairments in cascaded multi-degree CDC ROADMs with NRZ and nyquist pulse shaped signals", in ICETE 2018 - Proc. of the 15th Int. Joint Conf. on e-Business and Telecommunications, Porto, 2018, vol. 1, pp. 223-231

@inproceedings{sequeira2018_1733339393856,
	author = "Diogo G. Sequeira and Cancela, L. and Rebola, J.",
	title = "Physical layer impairments in cascaded multi-degree CDC ROADMs with NRZ and nyquist pulse shaped signals",
	booktitle = "ICETE 2018 - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications",
	year = "2018",
	editor = "",
	volume = "1",
	number = "",
	series = "",
	pages = "223-231",
	publisher = "",
	address = "Porto",
	organization = "INSTICC",
	url = "http://www.optics.icete.org/"
}

TY  - CPAPER
TI  - Physical layer impairments in cascaded multi-degree CDC ROADMs with NRZ and nyquist pulse shaped signals
T2  - ICETE 2018 - Proceedings of the 15th International Joint Conference on e-Business and Telecommunications
VL  - 1
AU  - Diogo G. Sequeira
AU  - Cancela, L.
AU  - Rebola, J.
PY  - 2018
SP  - 223-231
CY  - Porto
UR  - http://www.optics.icete.org/
AB  - 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.
ER  -