Cost-Effective DWDM ROADM Design for Flexible Sustainable Optical Metro&#x2013;Access Networks

Samael Sarmiento; Jose A. Altabas; David Izquierdo; Ignacio Garces; Salvatore Spadaro; Jose A. Lazaro

doi:10.1364/JOCN.9.001116

Journal of Optical Communications and Networking
Vol. 9,
Issue 12,
pp. 1116-1124
(2017)
•https://doi.org/10.1364/JOCN.9.001116

Cost-Effective DWDM ROADM Design for Flexible Sustainable Optical Metro–Access Networks

Samael Sarmiento, Jose A. Altabas, David Izquierdo, Ignacio Garces, Salvatore Spadaro, and Jose A. Lazaro

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Samael Sarmiento, Jose A. Altabas, David Izquierdo, Ignacio Garces, Salvatore Spadaro, and Jose A. Lazaro, "Cost-Effective DWDM ROADM Design for Flexible Sustainable Optical Metro–Access Networks," J. Opt. Commun. Netw. 9, 1116-1124 (2017)

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About this Article
History
- Original Manuscript: May 11, 2017
- Revised Manuscript: September 6, 2017
- Manuscript Accepted: October 17, 2017
- Published: November 22, 2017

Abstract

Architectural changes are required for the underlying networks to support the expected Internet data traffic volume growth caused by the popularization of cloud services, 5G-based services, and social networks, to provide a highly dynamic connectivity. Cost-effective and energy-efficient solutions for flexible network subsystems are required to provide future sustainable networks. In this paper, we present a cost-effective dense wavelength division multiplexing (DWDM) reconfigurable optical add/drop multiplexer (ROADM) design enabling optical metro–access networks convergence. The cost-effective DWDM ROADM capabilities also have been assessed in an ultradense wavelength multiplexing (u-DWDM) ring network scenario. In particular, achievable network throughput has been considered.

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Component	Normalized Unit Cost	References
$1 \times 32$ splitter	0.34	[20]
Dual $1 \times 2$ SW	0.40	[22]
Dual $2 \times 2$ SW	0.54	[23]
$1 \times 2$ WDM mux (175 GHz)	1	[21]
$1 \times 2$ WSS (12.5 GHz)	208	[11,13]
$1 \times 2$ WSS (100 GHz)	160	[11]

ROADM	Granularity (GHz)	Number of Components						Total Unit Cost (TUC)
ROADM	Granularity (GHz)	$1 \times 32$ Splitter	Dual $1 \times 2$ SW	Dual $2 \times 2$ SW	$1 \times 2$ WDM (125GHz)	$1 \times 2$ WSS (12.5 GHz)	$1 \times 2$ WSS (100 GHz)	Total Unit Cost (TUC)
WSS-based	12.5					3		624
WSS-based	100						3	480
Cost-effective	125	1	20	20	40			59.14

	WSS-Based ROADM [11]	Cost-Effective ROADM [22,23]
Power consumption (W)	25.2	7.2

Parameter	Reference Case	Case A	Case B
$P_{WC}$ (dB)	32.3	35.8	43.1
Throughput (G/ps)	1380	740	1090
$Δ$ (%)	100	53.6	79

Parameter	Case C	Case B	Case D
$B_{WC}$ (GHz)	62.5	125	250
$P_{WC}$ (dB)	47	43.1	36
Throughput (Gb/s)	1190	1090	960
$Δ$ (%)	86.2	79	69.7

Cost-Effective DWDM ROADM Design for Flexible Sustainable Optical Metro–Access Networks

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Journal of Optical Communications and Networking