Scalable Passive Optical Network Architecture for Reliable Service Delivery

Jiajia Chen; Lena Wosinska; Mohsan Niaz Chughtai; Marco Forzati

doi:10.1364/JOCN.3.000667

Journal of Optical Communications and Networking
Vol. 3,
Issue 9,
pp. 667-673
(2011)
•https://doi.org/10.1364/JOCN.3.000667

Scalable Passive Optical Network Architecture for Reliable Service Delivery

Jiajia Chen, Lena Wosinska, Mohsan Niaz Chughtai, and Marco Forzati

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Jiajia Chen, Lena Wosinska, Mohsan Niaz Chughtai, and Marco Forzati, "Scalable Passive Optical Network Architecture for Reliable Service Delivery," J. Opt. Commun. Netw. 3, 667-673 (2011)

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About this Article
History
- Original Manuscript: April 20, 2011
- Revised Manuscript: July 13, 2011
- Manuscript Accepted: July 13, 2011
- Published: August 16, 2011

Abstract

A scalable and reliable architecture for both a wavelength division multiplexing passive optical network and a hybrid wavelength and time division multiplexing passive optical network with self-healing capability is presented and evaluated. Our protection scheme is compatible with a cascaded arrayed waveguide grating that can accommodate an ultra-large number of end users. A simple interconnection pattern between two adjacent optical network units (ONUs) is applied in order to provide protection for distributed fibers between a remote node and the ONUs. Therefore, the investment cost on a per-user basis can be significantly reduced. Meanwhile, the performance evaluation shows that our approach can achieve high connection availability while maintaining the support of long reach and high splitting ratio.

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		Scheme in [5]	Scheme in [6]	Scheme in [7]	Scheme in [8]	Proposed Scheme
Maximal No. of Supported ONUs		N	N	N	$N - 1$	$N \cdot (N / 2)$
Shared part (for all the ONUs)	Size ⋅ No. of AWGs	$(2 \times N) \cdot 1$	$(3 \times N) \cdot 1$	$(4 \times N) \cdot 1$	$(N \times N) \cdot 1$	$(1 \times N / 2) \cdot N$ & $(N \times N) \cdot 1$
	No. of FFs	2	3	4	2	N
	No. of disjoint buried FCs	1	1	2	2	2
	Support of protection only for FF	No	No	Yes	No	Yes
No. of OSs	0	2	1	1	1
No. of WFs	1	1	1	0	1
No. of splitters	2	4	0	0	0
Dedicated part (for each ONU)	No. of DFs	1	1	1	2	1
	No. of disjoint buried DCs	1	1	1	2	1
	No. of IFs	1	2	1	0	1
	No. of disjoint buried ICs	$\frac{1}{2}$ (1 for a pair)	2	$\frac{1}{2}$ (1 for a pair)	0	$\frac{1}{2}$ (1 for a pair)
No. of transceivers	1	1	1	1	1

Component	Asymptotic Unavailability	Component	Asymptotic Unavailability
OLT	$U_{OLT} = 5.12 \times 1 0^{- 7}$	Optical switch	$U_{Optical_switch} = 4 \times 1 0^{- 7}$
ONU	$U_{ONU} = 5.12 \times 1 0^{- 7}$	AWG	$U_{AWG} = 4 \times 1 0^{- 7}$
Fiber cable	$U_{F} = 3.42 \times 1 0^{- 6} / km$	Wavelength filter	$U_{Wavelength_filter} = 1 0^{- 7}$
Splitter	$U_{splitter} = 1 0^{- 7}$

		Scheme in [5]	Scheme in [6]	Scheme in [7]	Scheme in [8]	Proposed Scheme
Maximal No. of Supported ONUs		N	N	N	$N - 1$	$N \cdot (N / 2)$
Shared part (for all the ONUs)	Size ⋅ No. of AWGs	$(2 \times N) \cdot 1$	$(3 \times N) \cdot 1$	$(4 \times N) \cdot 1$	$(N \times N) \cdot 1$	$(1 \times N / 2) \cdot N$ & $(N \times N) \cdot 1$
	No. of FFs	2	3	4	2	N
	No. of disjoint buried FCs	1	1	2	2	2
	Support of protection only for FF	No	No	Yes	No	Yes
No. of OSs	0	2	1	1	1
No. of WFs	1	1	1	0	1
No. of splitters	2	4	0	0	0
Dedicated part (for each ONU)	No. of DFs	1	1	1	2	1
	No. of disjoint buried DCs	1	1	1	2	1
	No. of IFs	1	2	1	0	1
	No. of disjoint buried ICs	$\frac{1}{2}$ (1 for a pair)	2	$\frac{1}{2}$ (1 for a pair)	0	$\frac{1}{2}$ (1 for a pair)
No. of transceivers	1	1	1	1	1

Component	Asymptotic Unavailability	Component	Asymptotic Unavailability
OLT	$U_{OLT} = 5.12 \times 1 0^{- 7}$	Optical switch	$U_{Optical_switch} = 4 \times 1 0^{- 7}$
ONU	$U_{ONU} = 5.12 \times 1 0^{- 7}$	AWG	$U_{AWG} = 4 \times 1 0^{- 7}$
Fiber cable	$U_{F} = 3.42 \times 1 0^{- 6} / km$	Wavelength filter	$U_{Wavelength_filter} = 1 0^{- 7}$
Splitter	$U_{splitter} = 1 0^{- 7}$

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Journal of Optical Communications and Networking