fiber deep
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• Es una arquitectura de red Tipo FTTC que busca aprovechar al máximo los beneficios de llevar la fibra óptica lo más cerca del suscriptor en una red de cable. Busca eliminar los amplificadores de RF en la Red reduciendo el ruido y las interferencias asociados al proceso de amplificación y permitiendo manejar niveles más altos en salidas de RF de dispositivos activos.
9876543219642
Conventional HFCNode + n
Scalable Nodes
987654321983
Fiber Deep - HFCNode + 0
Fiber Deep Nodes
987654321987654321
Fiber-on-DemandFTTH & Node + 0
Fiber Deep Nodes
987654321Same HE Same HE equipmentequipment
Fiber to the Home100% Fiber with NIU
FTTH Nodes
http://www.encuentrosregionales.com/13conferencias/plataforma_garciabish-rosario2009_parte5.pdf
• En los nodos HFC se utilizan tradicionalmente de 8 a 12 fibras por cada nodo
• Al acercarnos con fibra óptica más cerca al cliente, el tamaño del nodo decrece y por ende la cantidad de fibras será superior en el HUB y Headend.
• Para reducir la cantidad de fibras, se usan técnicas de multiplexación con diferentes lóngitudes de onda, de modo que:
- Se concatenen varios retornos sobre una misma fibra- Se haga uso de retorno digital.
CWDM (Coarse Wavelength Division Multiplexing)
1430nm
1450nm
1470nm
1490nm
1510 nm
1530nm
1550nm
1570nm
1590nm
1610 nm
Hasta aquí en fibra
1430nm
1450nm
1470nm
1490nm
1510nm
1530nm
1550nm
1570nm
1590nm
1560nm
DWDM (Dense Wavelength Division Multiplexing)
Power Supply
Receivers(Forward Path)
Digital Transponder
Transceiver (Return Path)
RedundantPower Supply
RF Amplifier
NIVELES HASTA:
Forward.860 MHz = 58 dBmv54 MHz = 42 dBmv
Retorno.5MHz - 42MHz= 16dBmv
• Two Application-specific Designs– Fiber Deep Nodes
• 50 to 200 HP/Node• Up to 2x2 segmentation
– Segmentable HFC Nodes• 500 to 2000 HP/Node• Up to 4x4 segmentation
• Key Features– Optional redundant power supplies– Patented digital return– Integrated Ethernet services
provisioning– Integrated status
monitoring/control
Model NC4000Hconfigured for
1x2 Segmentation
Model NC4000Sconfigured for
2x4 Segmentation
• Designed for CWDM ITU based un-cooled lasers
• Flat and wide operating passband on CWDM ITU grid (20nm spacing), 1430-1610 nm
• High channel isolation to minimize crosstalk
• Provide excellent environmental, mechanical stability
• Occupies one half-depth slot and is LGX compatible
• Optional integrated 1310nm combiner/splitter
• Optional line monitoring test point
DT4000 Series Digital TransceiversDT4000 Series Digital Transceivers• Key Functions
– Analog to Digital Conversion– Key Status Monitoring Link– Pluggable Optics – Standard DTs Support Daisy
Chaining• Performance
– Immunity to certain analog impairments such as laser overdrive.
– More robust (thermal stability) – All nodes have uniform
performance and output level
DT4000 Series Digital Transceivers
2 Power Supplies 27 RF Amplifiers
1 Optical Node595 Homes Passed 79 HPM7.49 Miles UG595 Homes per Node
30 Total Active Devices
1.1 Miles per Node 7 Optical Nodes
595 Homes Passed 79 HPM7.49 Miles UG85 Homes per Node Average
1 Power Supply
8 Total Active Devices 0 RF Amplifiers
1.1 Miles per Node 7 Optical Nodes
85 Homes Per Node
595 Homes Passed 79 HPM7.49 Miles UG
Area B
Area A
340 Homes
255 Homes
Node
Node
Analog Return from Coax
Plant
Digital Reverse
A to DAnalog In
Fiber TransportSignal Flow
Node
Analog Return from Coax
Plant
A to D
Node
Analog In
Node
NodeAnalog
Return from Coax Plant
Digital Reverse
A to D
Headend or Hub
Analog Out
D to A
Analog In
Fiber TransportSignal Flow
NodeAnalog Return
from Coax Plant
A to D
Node
Analog In
AR4001
DT4030N-00TR4040-1550
AR4001
DT4030N-00TR4040-1570
AR4001
DT4030N-00TR4040-1610
AR4001
DT4030N-00TR4040-1590
Node 1-4
Node 1-1
.5klm/-.18dB
Node 1-2
-3.3
OP91S2S-EQ
GRYL
PU
BP3108DR3002
Node 1-1610
Node 2-1590
Node 1-3
OP91S2S-80
-1.3
-7.3
PU
YL
GR
OP91S2S-70
-1.9
-5.6
PU
YL
GR
0.5 dBm 0.5 dBm 0.5 dBm
HUB SITE
1610
1590
-2.2
OP34D5H-0-00
CWDM COM OUT
CWDM Loop IN
1570
1550
-2.5Node 3-1570
Node 4-1550
AT3306G-N-1
5.5km/-1.9dB
-3.3
OP91S2S-EQ
GRYL
PU-3.3
OP91S2S-EQ
GRYL
PU-3.3
OP91S2S-EQ
GRYL
PU
.5klm/-.18dB.5klm/-.18dB
TR4440B-1490-PI
TR4440B-1550-PI
TR4440B-1570-PI
TR4440B-1590-PI
TR4440B-1610-PI
AT3306G-N-1
-6.6
OP91S4S-EQ
GR
5.5km/-1.9dB
AR4001DT4030N-00TR4040-
1430
1430
1450
-1.4
OP94M5L-1-00
CW
DM
IN
to
CW
DM
O
UT
CW
DM
O
UT
1470
1490
1510
-1.6
AR4001DT4030N-00TR4040-
1450
AR4001DT4030N-00TR4040-
1470
AR4001DT4030N-00TR4040-
1490
Up to 1.5km/-.5dB
Up to 1.5km/-.5dB
Up to 1.5km/-.5dB
Up to 1.5km/-.5dB
BP3108CDR3002
DR3002
1430
1450
-1.4
OP34D5L-0-00
CW
DM
IN
to C
WD
M
OU
T
CW
DM
O
UT
1470
1490
1510
-1.7
AT3306G-N-1
-6.6
OP91S4S-EQ
GR
5.5km/-1.9dB
AR4001DT4030N-00TR4040-
1430
1430
1450
-1.4
OP94M5L-1-00
CW
DM
IN
to
CW
DM
O
UT
CW
DM
O
UT
1470
1490
1510
-1.6
AR4001DT4030N-00TR4040-
1450
AR4001DT4030N-00TR4040-
1470
AR4001DT4030N-00TR4040-
1490
Up to 1.5km/-.5dB
Up to 1.5km/-.5dB
Up to 1.5km/-.5dB
Up to 1.5km/-.5dB
1430
1450
-1.4
OP34D5L-0-00
CW
DM
IN
to C
WD
M
OU
T
CW
DM
O
UT
1470
1490
1510
-1.7
DR3002
DR3002
SPL ENC
SPL ENC
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Center: 35.000 MHzSpan: 60.000 MHzRBW: 300 KHz VBW: 100 KHz Dwell: 200 µS
In-Band Power 9.881 dBmV
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Center: 35.000 MHzSpan: 60.000 MHzRBW: 300 KHz VBW: 100 KHz Dwell: 200 µS
HFC Fiber Deep
Fault Fault
• Aurora Networks Documentation.
• Centro de investigació e innovacion en Telecomunicaciones CINIT: http://www.cinit.org.mx/articulo.php?idArticulo=54
• Encuentros Regionales. Arquitecturas Fiber Depp: http://www.encuentrosregionales.com/13conferencias/plataforma_garciabish-rosario2009_parte5.pdf
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