Resilient Intersection-Ring Architecture Featuring Online Expansion and Intersectional Mutual Protection

Xingfeng Li; Chaoqin Gan; Zongkang Liu; Hubao Qiao; Yuqi Yan

doi:10.1364/JOCN.10.000613

Journal of Optical Communications and Networking
Vol. 10,
Issue 6,
pp. 613-623
(2018)
•https://doi.org/10.1364/JOCN.10.000613

Resilient Intersection-Ring Architecture Featuring Online Expansion and Intersectional Mutual Protection

Xingfeng Li, Chaoqin Gan, Zongkang Liu, Hubao Qiao, and Yuqi Yan

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Xingfeng Li, Chaoqin Gan, Zongkang Liu, Hubao Qiao, and Yuqi Yan, "Resilient Intersection-Ring Architecture Featuring Online Expansion and Intersectional Mutual Protection," J. Opt. Commun. Netw. 10, 613-623 (2018)

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Abstract

Network reliability and scalability are two important factors in metro-access networks. In this paper, a scalable and resilient intersection-ring architecture for metro-access networks is proposed. By adopting intersection-ring topology and expanding modules, the network can not only realize online expansion but also carry out mutual protection between intersection nodes. By employing a dual-fiber structure, the network can support multiple-fault protection and flexible switching of work modes. By using space-division multiplexing technology and transmitting downstream and upstream signals along the same direction, the Rayleigh backscattering noise can be immensely decreased in both normal work mode and protection mode. The performance analyses and simulations verify the feasibility of the proposed architecture.

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	CO			${FN}_{1}$				${FN}_{m - 1}$				${FN}_{m}$					${FN}_{m + 1}$					${FN}_{n}$
Fault Location	${OS}_{1}$	${OS}_{2}$	${OS}_{3}$	${OS}_{1}$	${OS}_{2}$	${OS}_{3}$	${OS}_{4}$	${OS}_{1}$	${OS}_{2}$	${OS}_{3}$	${OS}_{4}$	${OS}_{1}$	${OS}_{2}$	${OS}_{3}$	${OS}_{4}$	${OS}_{5}$	${OS}_{1}$	${OS}_{2}$	${OS}_{3}$	${OS}_{4}$	${OS}_{5}$	${OS}_{1}$	${OS}_{2}$	${OS}_{3}$	${OS}_{4}$
1	1-2	1-2	off	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3
1	3-4	3-4	off	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4
2	1-4	1-2	off	3-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3
2	1-4	3-4	off	3-2	3-4	2-4	2-4	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4
3	1-2	1-2	off	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3
3	3-4	3-4	off	3-4	3-4	2-4	2-4	3-4	3-2	2-4	2-4	1-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4
4	1-2	1-2	off	1-2	1-2	1-3	1-3	1-2	1-4	1-3	1-3	3-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3
4	3-4	3-4	off	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4
5	1-2	1-4	off	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	3-2	1-3	1-3
5	3-4	1-4	off	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-2	2-4	2-4
6	1-2	1-2	off	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-3	1-3
6	3-4	3-4	off	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-4	2-4
7	1-2	1-2	closed	1-2	1-2	1-4	1-3	1-2	1-2	1-4	1-3	1-2	1-2	1-4	1-3	1-3	1-2	1-2	1-4	1-3	1-3	1-2	1-2	1-4	1-3
7	3-4	3-4	closed	3-4	3-4	2-3	2-4	3-4	3-4	2-3	2-4	3-4	3-4	2-3	2-4	2-4	3-4	3-4	2-3	2-4	2-4	3-4	3-4	2-3	2-4
8	1-2	1-2	closed	1-2	1-2	1-3	1-4	1-2	1-2	1-3	1-4	1-2	1-2	1-3	1-4	1-3	1-2	1-2	1-4	1-3	1-3	1-2	1-2	1-4	1-3
8	3-4	3-4	closed	3-4	3-4	2-4	2-3	3-4	3-4	2-4	2-3	3-4	3-4	2-4	2-3	2-4	3-4	3-4	2-3	2-4	2-4	3-4	3-4	2-3	2-4
9	1-2	1-2	off	1-2	1-2	1-3	1-4	1-2	1-2	1-3	1-4	1-2	1-2	1-3	1-4	1-3	1-2	1-2	1-3	1-4	1-3	1-2	1-2	1-3	1-4
9	3-4	3-4	off	3-4	3-4	2-4	2-3	3-4	3-4	2-4	2-3	3-4	3-4	2-4	2-3	2-4	3-4	3-4	2-4	2-3	2-4	3-4	3-4	2-4	2-3
10	1-2	1-2	closed	1-2	1-2	1-3	1-4	1-2	1-2	1-3	1-4	1-2	1-2	1-3	1-3	1-3	1-2	1-2	1-4	1-3	1-3	1-2	1-2	1-4	1-3
10	3-4	3-4	closed	3-4	3-4	2-4	2-3	3-4	3-4	2-4	2-3	3-4	3-4	2-4	2-4	2-4	3-4	3-4	2-3	2-4	2-4	3-4	3-4	2-3	2-4

Component	Symbol	Insertion Loss (dB)
AWG	$L_{AWG}$	3
Splitter	$L_{Sp}$	3
OS	$L_{OS}$	0.5
WSS	$L_{WSS}$	2
Circulator	$L_{Cir}$	0.5
Fiber	$α_{F}$	0.2 dB/km

Component	Symbol	Unreliability (Failure/ $10^{9} h$ )	References
OLT	$U_{OLT}$	$5.12 \times 10^{- 7}$	[25]
EDFA	$U_{EDFA}$	$4 \times 10^{- 7}$	[25]
Isolator	$U_{Iso}$	$2 \times 10^{- 8}$	[26]
Splitter	$U_{Sp}$	$4 \times 10^{- 8}$	[25]
OS	$U_{OS}$	$4 \times 10^{- 7}$	[25]
ONU	$U_{ONU}$	$5.12 \times 10^{- 7}$	[25]
WSS	$U_{WSS}$	$4 \times 10^{- 7}$	[25]
Circulator	$U_{Cir}$	$2 \times 10^{- 7}$	[25]
AWG	$U_{AWG}$	$4.8 \times 10^{- 6}$	[27]
Fiber	$U_{F}$	$2.4 \times 10^{- 7} / km$	[25]

Index	This Paper	In [12]	In [14]	In [25]
Scalability	Better	Good	Good	Weak
Multiple-fault protection	Good	Weak	Weak	Good
Node fault protection	Good	Weak	Weak	/
RB	Better	Weak	Weak	Good

Parameter	Value
Downstream rate	10 Gbps
PRBS	$2^{7} - 1$
Wavelengths	193.1–193.4 THz
Gain of EDFA	20 dB
CO and FN	5 km
Between two FNs	5 km
RN and FN	5 km
RN and ONU	2 km
FN and ONU	2 km
Upstream rate	2.5 Gbps

Resilient Intersection-Ring Architecture Featuring Online Expansion and Intersectional Mutual Protection

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Journal of Optical Communications and Networking