See the presentation here!

Survey on Solutions for NG-PON2
A joint contribution from EU FP7 “OASE” consortium members in FSAN:
Ericsson and ADVA
FSAN NG-PON2 Workshop, Tokyo, Jan. 25, 2011
The research leading to these results has received funding from the European Community's Seventh
Framework Program (FP7/2007-2013) under grant agreement n 249025
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
1
Introduction
 “The OASE Integrated Project will examine Fibre-to-the-Home (FTTH)
within a multi-disciplinary study to provide a self-consistent and
coherent set of technological solutions” *
 The basic set of requirements for future FTTH solutions within OASE is
the same as the FSAN “NG-PON2 basic requirements – Strawman”
 The material of this contribution comes mainly from Deliverable D4.1
http://www.ict-oase.eu/public/files/OASE_WP4_D4_1_29th_October_2010_v1_0.pdf
 This deliverable includes absolute cost numbers
 In this contribution, cost numbers are normalized by “GPON ONT data only” cost
 In particular, a number of NG-PON related technologies and solutions
have been investigated and compared
* ) For more info, see http://www.ict-oase.eu/%3Cp%3E%3Ca%20href=%22/Eng%22%3Eprojekt.hansanet.ee/Eng%3C/a%3E%3C/p%3E
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
2
Possible Solutions
FTTX Systems
Topology
Dedicated Fiber Infrastructure
Architecture
Passive RN
(patch-thru)
Technology
RoF
Active
WDM-PON
+L1/2 AON
1G…10G
Realization
Passive
Active + passive
Cascaded RNs
Active RN
Ethernet
TDM-PON
GPON
Power Splitter
Stacked
TDMA
EPON
OFDM
PON
Optical
OFDM
Digital
“OBSAI”
Digital
“CPRI”
DWDM
+ 10G L2
XG-PON
DWDM
+ 10G L1
10G-EPON
WDM Filter
CDMA
PON
WDM-PON
Electrical
OFDM
CWDM
4-8 w/
XG-PON
WDM+XXMA
Hybrid
Active RN
OADM
RPR
Ethernet
TDM
UDWDM
Active
OXC,
ROADM
Active RN
WDM
Ethernet
DWDM
DWDM
SFP
Coh.
E-CDMA
40G-TDM
Hybrid (Filter + Splitter)
Coh.
DD
Passive
Active
O-CDMA
Analog
TV/Mobile
Mesh-based FTTX
Shared (Feeder) Fiber Infrastructure
Passive
Remote Node
(RN) Design
Ring-based FTTX
Tree-based FTTX
HFC
Tunable ONU
Arrayed OLT
Seeded
Reflective
WDM+
TDMA
WDM+
SCMA
WDM+
CDMA
WDM+
OFDMA
10G…100G
 There are many possible, potential solutions
 Not all of them fit the (Strawman) requirements
 The solutions covered in this contribution is indicated by red frames
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
3
WDM-PON with tunable laser
L-Band ~50 GHz
Tx Array
1
...
Mux
PIC
RN
L
C
C-Band 50GHz
Rx Array
1
...
N





Cyclic AWG
N
ONU
Cyclic AWG
OLT
T-LD
SFF
Rx
Identical Cyclic AWGs
Low cost for dedicated 1G per line
Low-medium fan-out, 64…96 / 128…180
Example: 1:80 AWG, 80 lines
ODN insertion loss (50 km, 1:80 AWG): 15 dB + OLT AWG (20 dB total)
Cost drivers: AWG ports, OLT-array port, ONU transceiver
Relative Cost (per line)
1.5 total
Power consumption (per line)
2.5 W
AWG ports
0.2
OLT array port
0.5 W
OLT array port
0.5
OLT switching
1.0 W
ONU TRX
0.75
ONU TRX
1.0 W
OLT switching
0.05
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
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WDM-PON with wavelength re-use
OLT
AWG
AWG
C-Band 100 GHz
…
…





ONU
RSOA
Rx
Tx Data
L-Band ~100GHz
…
Rx
Array
…
TX
Array
RN
Coupler
Lowest cost for dedicated 1G…10G per line, Tx 10G-ready (!), 1G Rx (!)
Low fan-out, 40…96
1:48 AWG, per each C- and L-band, up to 96 lines
ODN insertion loss (50 km, 1:48 AWG): 15 dB + RN AWG (20 dB total)
Cost drivers: AWG ports, OLT-array port, ONU transceiver
Relative Cost (per line) (1G Rx!)
1.35 total
Power consumption (per line)
2.5 W
AWG ports
0.20
OLT array port
0.5 W
OLT array port incl.
0.50
OLT switching
1.0 W
ONU TRX incl
0.60
ONU TRX
1.0 W
OLT switching
0.05
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
5
Hybrid WDM/TDMA-PON with lambda split
OLT
RN1
AWG
Tx/Rx
Array
1xN AWG
TDMA
MDXM
TDMA
MDXM
λD λU
RN2
1:k
10G-TDMA
ONUn
APD
FEC
SOA
Data
CLK Rec.
T-LD
Burst M.
FEC
Data
 1:40 AWG, 1:16 power splitter/combiner (640 lines, ~575M guaranteed)
 ODN insertion loss (50 km, 1:40 AWG, 1:16 split): 34 dB + OLT AWG
 Cost drivers: AWG + splitter ports, OLT amplifiers, OLT 10G BM TRX, ONU 10G TRX (APD, BM, FEC)
Relative Cost (per line)
2.17 total
Power consumption (per line)
3.8 W
AWG/splitter ports
0.12
OLT port
0.25 W
OLT port
0.22
OLT switching
1.0 W
OLT amplifiers
0.03
OLT amplifiers
0.05 W
ONU TRX
1.75
ONU
2.5 W
OLT switching
0.05
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
6
Hybrid WDM/OFDMA-PON
AWG
cos
RF
SOA
-sin
cos
RF Modulation
SSB
Filter
MFL
90
RF
+
ADC
Digital
OFDM
DAC
OFDM
MDXM
1:k
DC Bias
Tx/Rx
Array
1xN AWG
OFDM
MDXM
10G-OFDM
ONUn
λD λU
RN2
sin
ADC
Serial-Parallel
Ext. Removal
FFT
M-ary QAM
RN1
DAC
Parallel-Serial
Cyclic Extens.
IFFT
M-ary QAM
OLT
 1:40 AWG, 1:16 power splitter/combiner (640 lines, ~600M guaranteed)
 ODN insertion loss (50 km, 1:40 AWG, 1:16 split): 34 dB + OLT AWG
 Cost drivers: OLT amplifiers, ONU amplifiers?, electronics, ONU TRX, OLT TRX (APD), AWG/splitter ports
Relative Cost (per line)
3.62 total
Power consumption (per line)
7.8 W
AWG/splitter ports
0.12
OLT port incl. digital Tx
0.75 W
OLT port
0.22
OLT switching
1.0 W
OLT amplifiers
0.03
OLT amplifiers
0.05 W
ONU TRX
2.75 (Circulator!)
ONU
6.0 W
ASICs + switching
0.55
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
7
Ultra-Dense WDM
RN1
AWG
1xN AWG
UDWDM
MDXM
Tx/Rx
Array
UDWDM
MDXM
λD λU
RN2
1G-UDWDM
ONUn
1:k
3dB
DS
3dB
OLT
–
+
RF
Pol.
Scr.
3dB
Pol. Scr.
CLK Rec.
3dB
3dB
3dB
ADC / DAC
T-LD
–
+
SCMA
US
T-LD
 Example: 40Ch/100-GHz filter, each 100-GHz channel accommodating 16 UDWDM channels
 ODN insertion loss (50 km, AWG, 1:16 split): 34 dB + OLT AWG
 Cost drivers: coherent, polarization-diverse (-scrambled) TRX
Relative Cost (per line)
4.12 total
Power consumption (per line)
4.5 W
AWG/splitter ports
0.12
OLT port incl. digital Tx
1.5 W
OLT port incl. SCMA
1.20
OLT switching
1.0 W
ONU TRX
1.75
ONU
2.0 W
OLT switching
0.05
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
8
ONU Power Consumption
today [W]
Footprint OLT
Maturity
Time to market [Y]
20
27
3R
60
50+
2.5
15
̴2 PON
Ports
per 1HU
First
Demo
2
EDFA
Raman
SOA
TDFA
60100+
22-34
for
Fibre
4
8
25-100%
of 9HU
First
Demo
3
RE Technology
Reach w/ RE [km]
Power Budget w/ RE [dB]
Per-Client OLT Power
Consumption today [W]
32
Power Budget w/o RE
[dB]
Per-Client US Bit Rate
Peak [Gb/s]
40
Reach w/o RE [km]
Per-Client US Bit Rate
sustained [Gb/s]
1.25
Client Count per Feeder
Fiber
Per-Client DS Bit Rate
Peak [Gb/s]
40
WDM-PON
w/ tunable Laser
1-10
1-10
1-10
1-10
40-400
15-50
5-17
for
Fibre
WDM-PON
w/ Lambda reuse
1
1
1
1
96
40
12
-
-
-
4
8
25-100%
of 9HU
First
Demo
2
WDMA
1.25
UDWDM
1
1
1
1
512-1024
30100
-
OA
100+
-
10
12
Half
Rack
First
Demo
>4
OFDMA
40G serial
TDM-PON
Serial 40G
OFDM-PON
0.63
40
0.63
4+
64
20
-
-
-
-
5
20
25-100%
of 9HU
First
Demo
>5
CDMA
TDMA
System concept
Per-Client DS Bit Rate
sustained [Gb/s]
Comparison Table I
OCDM-PON
10
10
10
10
513 Theory
12 Demo
59
-
-
-
-
-
-
25-100%
of 9HU
Lab
>5
Issue to meet FSAN Strawman requirements
Not compliant with FSAN Strawman requirements
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
9
Hybrid WDM/TDM
with lambda split
0.31
10
0.31
10
1024
20/10
/NA
22/25/
28
Hybrid WDM/TDM
with lambda switch
0.31
10
0.31
10
1024
-
32/35/
38
1
1
1
1
-
70
-
Hybrid WDM/TDM
AON
WDM-PON Backhaul
AON
GbE access
Two-Stage
WDM-PON
WDM-PON AON
0.1-1
0.1-1
1
1
0.1-1
0.1-1
Issue to meet FSAN Strawman requirements
1
1
1k10k
23049216
100
60
EDFA,
Raman,
SOA
46/36/
26
11/14/
17
1
10
Half
Rack
First Demo
2
80/70/
60
2/5/8
1
10
Half
Rack
First Demo
3
40/30/
20
12/15/
18
1
10
Half
Rack
First Demo
>3
120
-
1
5
32 Ports
per HU
Deployed
0
8
Main:
Half
Rack
In-Field:
1 Shelf
Can be
demonstrated
today
3
8
Main:
Half
Rack
In-Field:
2HU
each
Can be
demonstrated
today
1
EDFA,
Raman,
SOA
EDFA,
Raman,
SOA
Higher
quality
optics
15+15
EDFA
active
sites
required
15+10
EDFA
active
sites
required
150+
85+
25+25
25+10
Not compliant with FSAN Strawman requirements
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
5
5
Time to market [Y]
31/34/
37
Maturity
-
Footprint OLT
1024
ONU Power Consumption
today [W]
Power Budget w/o RE [dB]
10
Per-Client OLT Power
Consumption today [W]
Client Count per Feeder
Fiber
0.31
Power Budget w/ RE [dB]
Per-Client US Bit Rate Peak
[Gb/s]
10
Reach w/ RE [km]
Per-Client US Bit Rate
sustained [Gb/s]
0.31
RE Technology
Per-Client DS Bit Rate Peak
[Gb/s]
Hybrid WDM/TDM
broadcast & select
System concept
Reach w/o RE [km]
Per-Client DS Bit Rate
sustained [Gb/s]
Comparison Table II
Requires active sites
10
Summary and conclusions
Many of the NG-PON2 candidates meet all Strawman requirements
Some exceptions found:
 40G-PON have issues with split/reach, power consumption and cost
 UDWDM have issues with power consumption and very high cost
 Hybrid WDM/TDM PON have issues with sustainable bitrate per PON line.
From this study, WDM-PON seems the best candidate
 In comparison, WDM-PON is a more mature technology
 Low cost per line is possible while achieving 1 Gbps per line
 Tunable lasers provide higher link budget/reach while wavelength re-use
has lower cost
 Two-Stage WDM-PON and WDM-PON/AON not considered herein any
further due to their active-site requirement
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
11
Back-up slides
A joint contribution from EU FP7 “OASE” consortium members in FSAN:
Ericsson and ADVA
FSAN NG-PON2 Workshop, Tokyo, Jan 2011
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
12
OASE Consortium
 JCP-Consult (F)
 Deutsche Telekom AG (D)
 Interdisciplinary institute for BroadBand Technology vzw (B)
 Technische Universität München (D)
 Kungliga Tekniska Högskolan (S)
 ADVA AG Optical Networking (D)
 Ericsson AB (S)
 Ericsson Telecomunicazioni S.p.A (I)
 Acreo AB (S)
 Magyar Telekom (H)
 Slovak Telekom (SK)
 University of Essex (UK)
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
13
NG-PON2 candidates
 40G Serial TDM-PON
 WDM-PON with tunable laser
 WDM-PON with wavelength re-use
 Serial 40G OFDM-PON
 OCDMA-PON
 Hybrid TDM/WDM Broadcast and select
 Hybrid WDM/TDM with lambda split
 Hybrid WDM/TDM with lambda switch
 Ultra-dense WDM (UDWDM)
 PON-in-PON
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
14
Hybrid WDM/OCDMA-PON
OLT
RN1
AWG
Tx/Rx
Array
1xN AWG
OCDMA
MDXM
OCDMA
MDXM
RN2
λD λU
1G-OCDMA
ONUn
1:k
T
Rx
DPSK
DPSK
Encoder /
Decoder




NxN
AWG
Multiport
E/D
Low fan-out (up to a max. of 16 OCs per wavelength, few wavelengths)
1:8 (TFF) WDM, 1:16 power splitter/combiner (128 clients, ~600M guaranteed)
ODN insertion loss (50 km, 1:8 TFF, 1:16 split): 33 dB + OLT filter
Cost drivers: AWG/splitter ports, OLT amplifiers, OLT TRX incl. E/D, ONU TRX incl. E/D and circulators (!)
Relative Cost (per line)
3.94 total
Power consumption (per line)
2.75 W
AWG/splitter ports
0.13
OLT port
0.55 W
OLT port incl. E/D (N x N AWG!)
0.60
OLT switching
1.0 W
OLT amplifiers
0.16
OLT amplifiers
0.2 W
ONU TRX incl. E/D
3.00 (Circulators!)
ONU (DPSK)
1.0 W
OLT switching
0.05
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
15
Two-Stage WDM-PON
Scalable
Universal
Switch
PoP




TXFP
AWG
TXFP
AWG
TXFP
AWG
...
ONU
WDM PIC
OLT
TXFP
ARN / LX
TSFF
PRN2
PRN1
Fairly low cost for high fan-out, but active sites required (but less (main) fibers than P2P AON)
Still comparatively low energy consumption
Sufficient for 50 + 50 km
Example: 40 x 10G, each pair carrying 40 lines (~500M guaranteed)
Relative Cost (per line)
2.62 total
Power consumption (per line)
3.6 W
AWG ports
0.12
PoP switching
1.0 W
10G TRX
1.20
LX TRX (2 x TXFP)
0.35 W
Switch (PoP)
0.05
OLT Array port
0.5 W
WDM-PON OLT port (LX)
0.50
ONU TRX
1.0 W
CPE TRX (2 x grey SFP)
0.75
OLT Switching
0.75 W
ERICSSON – ADVA, NG-PON2, FSAN Tokyo, Jan 25, 2011
16