Switchless Elastic Rate Node (SERANO) Architecture: A Universal Node for Optical Grooming and Adaptive Networking

Evangelos Kosmatos; Theofanis Orphanoudakis; Chris Matrakidis; Alexandros Stavdas; Andrew Lord

doi:10.1364/JOCN.8.00A162

Journal of Optical Communications and Networking
Vol. 8,
Issue 7,
pp. A162-A170
(2016)
•https://doi.org/10.1364/JOCN.8.00A162

Switchless Elastic Rate Node (SERANO) Architecture: A Universal Node for Optical Grooming and Adaptive Networking

Evangelos Kosmatos, Theofanis Orphanoudakis, Chris Matrakidis, Alexandros Stavdas, and Andrew Lord

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Evangelos Kosmatos, Theofanis Orphanoudakis, Chris Matrakidis, Alexandros Stavdas, and Andrew Lord, "Switchless Elastic Rate Node (SERANO) Architecture: A Universal Node for Optical Grooming and Adaptive Networking," J. Opt. Commun. Netw. 8, A162-A170 (2016)

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Abstract

The switchless elastic rate node (SERANO) is an elastic optical network block architecture facilitating reduction in network cost and blocking due to spectral fragmentation while extending the capacity-reach product in translucent optical networks. We present an analytical mathematical method for minimizing the number of transceivers that are solely used to construct this block, albeit a finite blocking probability. Moreover, based on a realistic traffic matrix and making use of a networking planning tool, we deduce a SERANO’s block dimension for BT’s national backbone network. Finally, we estimate the conditions under which the cost of a SERANO block is lower to the corresponding electronic switch for providing important networking functions like 3R regeneration, defragmentation, and network reoptimization.

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	Scenarios
							Solution of Eq. (4)				Solution of Eq. (5)
#	$N$	$M$	$C_{ch} (Gb / s)$	Cap. (Tb/s)	Full-Scale SERANO BVTs	Switch/ Router BVTs	$α$	$P_{b, tot} (\times 10^{- 3})$	BVTs	Saving (%)	$α$	$P_{b, tot} (\times 10^{- 3})$	BVTs	Saving (%)
1	4	50	100	20	800	200	1.85	1.9	384	52	1.4 ( $c = 2$ )	3.7	288	64
2	10	20	100	20	2000	200	4	6	800	60	2.55 ( $c = 2$ )	0.6	540	73
3	20	10	100	20	4000	200	8.05	1.1	2000	50	2.05 ( $c = 4$ )	0.4	800	80
4	5	40	200	40	1000	200	2.2	2.1	450	55	1.65 ( $c = 2$ )	0.5	350	65

	Scenarios
							Solution of Eq. (8)
#	$N$	$M$	$C_{ch} (Gb / s)$	Cap. (Tb/s)	Full-Scale SERANO BVTs	Switch/ Router BVTs	$α$	$P_{b, tot} (\times 10^{- 3})$	BVTs	Saving (%)
1	3	{26,55,70}	100	15.10	453	151	1.4	1.1	203	55.2
2	3	{18,38,49}	100	10.50	315	105	1.4	1	143	54.6
3	3	{31,66,84}	100	18.12	544	181	1.3	1.6	234	57.0

Component	Cost in ICU [10]	# for Router	# for SERANO
BVT client-side card	0.43	1
BVT multiflow $optical module + flex framer$ (or back-to-back i/f)	1.74	1	1
$400 Gb / s$ line card	2.88	1
Router line card slot and backplane	0.38	1
WDM chassis shelf	0.07	3	3
“Gray” $100 Gb / s$ transceiver	0.08	8

	Double-Pump EDWA
$P_{s}$	5.36 mW
$G_{ss}$	9594.2

	Scenarios
							Solution of Eq. (4)				Solution of Eq. (5)
#	$N$	$M$	$C_{ch} (Gb / s)$	Cap. (Tb/s)	Full-Scale SERANO BVTs	Switch/ Router BVTs	$α$	$P_{b, tot} (\times 10^{- 3})$	BVTs	Saving (%)	$α$	$P_{b, tot} (\times 10^{- 3})$	BVTs	Saving (%)
1	4	50	100	20	800	200	1.85	1.9	384	52	1.4 ( $c = 2$ )	3.7	288	64
2	10	20	100	20	2000	200	4	6	800	60	2.55 ( $c = 2$ )	0.6	540	73
3	20	10	100	20	4000	200	8.05	1.1	2000	50	2.05 ( $c = 4$ )	0.4	800	80
4	5	40	200	40	1000	200	2.2	2.1	450	55	1.65 ( $c = 2$ )	0.5	350	65

Abstract

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Figures (9)

Tables (4)

Equations (10)

Journal of Optical Communications and Networking