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FTTX TECHNOLOGIESJuly 26, 2016 Steve Harris, Senior Director Advanced Technologies & Instruction, L&D

[email protected]


• Enabling technologies, standards and approaches that MSOS are using to deploy FTTx

• Optical Distribution Network Architectures

• Radio Frequency over Glass (RFoG) FTTx Networks

•FTTx Passive Optical Networks (PONs) GPON and EPON

• DOCSIS Provisioning of EPON (DPoE)(DPoG work is being done now)

AGENDA

Essential Knowledge for Cable Professionals™© SCTE

FTTx


Why Next Gen Access Networks?• Benefits…

– High bandwidth capability to subscribers to deliver video, voice and data services

– 1 and 10 Gbps options available in DOCSIS 3.1 networks and PONs– 40 and 100 Gbps options being tested– Improved overall reliability via PNM in DOCSIS 3.1 and optics with PON– Knowledge of FTTx and DOCSIS 3.1 provides additional skills to cable

installers and engineers, which can help open the door for new opportunities


Dial‐UpDOCSIS1.0 – 2.0

Maximum speeds today

DOCSIS3.1/FTTx

NextGen

* Billboard consumer speeds

DOCSIS 3.1 and FTTx Drivers

DOCSIS3.0

100 Gbps

400 Gbps


What is FTTH?

Fiber to the Home, or FTTH, delivers cable services over fiber optics. FTTH is also known as Fiber to the Premises (FTTP)

• FTTH delivers video, voice and data

• Optical fiber is used instead of coaxial cable

• Energy management and conservation

• Now available in more than 15 percent of homes;more than 9 million connected in North America

• High bandwidth capability to subscribers

• Offering 100 Mbps today

• 1 and 10 Gbps options available

• 40 and 100 Gbps options being tested


Benefits of FTTx

FTTx improves efficiency by delivering cable services over fiber optics.

• Fiber to the premises is extremely cost effective in rural areas

• Improved overall reliability and reduced signal egress

• No power required for active devices and battery power supplies in the outside plant (OSP)

• Backup power for consumer premises equipment becomes the responsibility of the subscriber


Benefits of FTTx

FTTx has many advantages by delivering cable services over fiber optics.

• An attractive option to coax, with customer perception that fiber is more valuable

• Fiber optimizes CapEx and reduces OpEx

• Optical fiber “future proofs” networks to allow for increased bandwidth over the same installed fiber

• Knowledge of FTTx provides additional skills to cable installers and engineers, which can help open the door for new opportunities


Drivers for FTTH

Question: In your opinion, what technologies are driving FTTH?

• IP video services like IPTV

• Over the top (OTT) services like video consumption

• Increased use of HD video

• UHD 4K video w/ HDR

• Internet of Things (IoT)


FIBER 101

• ITU 9 micron single mode (ITU-T G.652)• Single Mode Ribbon Fiber (12,24)• CWDM overlay (ITU-T G.694.2)• ITU-T G.657.B3 5 mm bending radius• ITU-T G.652.D is a reduced water peak • ITU-G.671 is the transmission

characteristics • ITU-T 598-D Fiber Colors• SC/APC Connectors• RF in the THz• DWDM in the core/agg network

Optical Bands

Fiber Optic Patch SC/APC

Weak Peak Chart


What is Fiber to the Node (FTTN)?

Fiber to the Node (FTTN) is a broadband network architecture that uses optical fiber from the headend or hub site to a node in the outside plant (OSP). FTTN is also known as Hybrid Fiber Coax (HFC).

NodeHeadend or Hub

Coax Tap

Subscriber

Coax

Cable Modem

Drop

Tx

Rx

WDM

1310 nm ‐>

<‐ 1550 nm


What is Fiber to the Curb (FTTC)?

Fiber to the Curb (FTTC) is a broadband network architecture that uses optical fiber from the headend or hub site to a fiber distribution cabinet (FDC) or Network Extension (NetX) cabinet in the outside plant (OSP).

Headend or Hub

MDU

Coax Tap

Network Extension (NetX)

Drop

Tx

Rx

WDM

1310 nm ‐>

<‐ 1550 nm


What is Fiber to the Business (FTTB)?

Fiber to the Business (FTTB) is a broadband network architecture that uses optical fiber from the headend or hub site to a business.

Headend or Hub

Businesses

Fiber Distribution

Cabinet (FDC)

Tx

Rx

WDM

FDC


What is Fiber to the Multiple Dwelling Unit (FTTM)?

Fiber to the Multiple Dwelling Unit (FTTM) is a broadband network architecture that uses optical fiber from the headend or hub site to an MDU.

Headend or Hub

MDUs

Fiber Distribution

Cabinet (FDC)FDC

Tx

Rx

WDM


What is Fiber to the Premises (FTTP) and Fiber to the Home (FTTH)?

Fiber to the Premises (FTTP) or Fiber to the Home (FTTH) is a broadband network architecture that uses optical fiber from the headend or hub site to subscriber.

Fiber Distribution

Cabinet (FDC)

Optical tap

Subscriber or premise

Headend or Hub

Tx

Rx

WDM


EPON

100 Gbps Ethernet PON WG Started Work

FTTx Evolution

2010

20052000

2010

3.1

GPON

1 Gbps GEM PON

EPON

10 GbpsEthernet PON

EPON

1 Gbps Ethernet PON

RFoG

SCTE 174 FTTx Standard

10 Gbps in the Downstream and up to

10 Gbps in the Upstream

2015

RFOG

10 Gbpsvia DOCSIS 3.1


FTTH for Cable Networks: Comparison of RFoG, GPON, & EPON

GPON (ITU‐T G.984)• 2.488 Gbps down and 1.244 Gbps upstream• G.984.6 adds reach extension (up to 60 km)

XG‐PON1 (ITU‐T G.987)• Not backward compatible with GPON• WDM Coexistence (parallel networks) • 10 Gbit/s down and 2.4 Gbit/s upstream

NG‐PON2 (ITU‐T G.989)• Not backward compatible (GPON or XG‐PON1)• 2.4G x 2.4G, 10G x 2.4G, 10G x 10 Gbps• Time and wavelength division multiplexed passive optical

network (TWDM‐PON)• Defines use of 4 or 8 wavelengths

Radio Frequency over Glass (RFoG) SCTE 174 2010• RFoG is a media conversion PON technology• DOCSIS is the data technology• Supports existing cable practices, systems• Coexists with data/IP PON technologies

e.g., EPON, GPON

(Shared Media Standards) EPON (IEEE 802.3ah)• 1 Gbps Symmetrical10G‐EPON (IEEE 802.3av)• Define Backward Compatibility with EPON• 1 Gbit/s Symmetrical• 10 Gbit/s down and 1 Gbps upstream• 10 Gbit/s SymmetricalNG‐EPON (Next Generation EPON)• Studies underway to increase capacityIEEE Point‐to‐Point Standards• 1 Gbit/s Optical Ethernet (IEEE802.3z)• 10 Gbit/s Optical Ethernet (IEEE802.3ae)• 40 Gbit/s Optical Ethernet (IEEE802.3ba)• Scaling tools CWDM, DWDM, and AWG

Source: M. Emmendorfer, “Comparing IEEE EPON & FSAN / ITU-T GPON Family of Technologies,” SCTE Cable-Tec Expo 2014


FTTX WAVELENGTHS

1260

1280

1300

1320

1340

1360

1480

1500

1520

1540

1560

1580

1600

10 Gig EPON US1270 ± 10 nm

1575

10 Gig EPON DS1577 ‐2/+3nm

16201610

PrimaryRFoG US1610 nm

1590

10 Gig NG‐PON2 DS

152510 Gig NG‐PON2 US1524 – 1544 nmAlt. RFoG US

1310 nm RF Overlay DS&

RFoG DS1550 nm1 Gig EPON US

1310 ± 50 nm

1 Gig EPON DS1490 ± 10 nm


ODN vs. HFC


PON Central Split Architecture• Preferred architecture by

cable operators

• Headend or hubsite contains Tx and Rx lasers

• Phantom 1:2 split for service group resizing

• OLT used for 1GE‐PON and 10GE‐PON

• 32 sub PON service area

• ODN

• 20 km optical fiber

• 1:16 to 1:128 Splitter

• Optical taps

• Optical drops

• ONU or RFoG ONU at subscriber

Optical Tap

1:32or

1:64

Subscriber

PON Service Area

1:N

Optical Line Terminal

(E‐PON only)

Optical Distribution Network (ODN)

WDM

Rx

Tx

Breaking it Down

Service Group Sizing Splitter‘Phantom Splitter”

Optical Splitter/Coupler

R‐ONU/ONU

EDFA is required for RFoG / R‐ONU


PON Distributed Split Architecture





• ODN


• 1:8 split feeds 1:4 splits

• Optical taps

• Optical drops


1:8

PON Service Area

1:4


Optical TapWDM

1:N

Rx

Tx

Breaking it Down

Another PON architecture, not a preferred approach.


(E‐PON only)

R‐ONU/ONU

Optical Splitter/Coupler

1:4


PON Distributed Tap Architecture





• ODN


• Eight 1:4 splitters

• Optical taps

• Optical drops


R‐ONU/ONU


Headendor Hub Rx

Tx

drop1:4

PON Service Area

1:NWDM

Breaking it Down

Another PON architecture, not a preferred approach.


(E‐PON only)

TAP #1

TAP #2

TAP #3

TAP #4

TAP #8

drops


HFC vs RFoG

The 1610 nm wavelength is used by operators that offer, or intend to offer, G-PON or E-PON overlays to their system.

NetX/FDC

OpticalTaps

R-ONU

R-ONU

CMTSEdge QAMs

CM

OSS / HUB HFC/OSP/ODN Subscriber

R-ONU

1550 ->

<- 1610

1550/1610

1310/1550

100 Mbps DOCSIS

Voice

R-ONU

MDU/Business

CM

1310 nm HFC Tx

1:32 to 1:128Optical Splitter/Coupler

DOCSISFrames

DOCSISPackets

1550/1610

1550/1610

1310 ->

<- 1550

CM

CM

MicroNode

1610 nm RFoG Rx

1550 nm HFC Rx

RFoGEDFA W

DM

COMBINE

1550 nm RFoG

RF Amplifiers

1:2

10 to 20 km


Subscriber transition plan from HFC to FTTH

(DNS, DHCP, SNMP,

dTFTP/TFTP, Syslog, ToD)

CMTSEdge QAMs

1310 nm HFC1550 nm RFoG/E-PON Overlay

CM

1550 nm HFC1610 nm RFoG

COMBINE

OSS / HUB HFC/OSP/ODN Subscriber

1310/1550

100 Mbps DOCSIS

OLT

1490 nm / 1310 nm E-PON 1577 nm / 1270 nm 10GE-PON

DPoE

Voice

RFoGEDFA MDU/Business

<- 1610/1310/1270

NetX/FDC

OpticalTaps

ONU

ONU

R-ONU

1550/1490/1577 ->

1550/1610

1490/1310

1577/1270

10 Gbps

1 Gbps

300 Mbps DOCSIS

ONU

CM

1:32 or 1:64Optical Splitter/Coupler

Ethernet and DOCSISFrames

DOCSISFrames

1:N

WDM


RFoG


• RF signals can pass through; air, coaxial cable and fiber optic strands

– RFoG can be viewed as “coaxial glass”, since only one strand is used for both forward & return paths, but on different wavelengths

• RFoG is a standard developed by the SCTE as SCTE 174 in 2010 to address the use of optical fiber to the premises

– Allows reuse of headend and consumer premises equipment

• RFoG spans from the headend, or hub, directly to the subscriber and use the same modulation schemes as HFC networks

What is RFoG?Radio Frequency over Glass

Breaking it Down

ONU

ONU

R-ONU

1550/1610

R-ONU

MDU/Business

CM

1550/1610

1550/1610

CM

CM

MicroNode

OpticalTap


• Greenfield is less expensive than new HFC

• CapEx is spread across plant (60%) and subscriber (40%)

• Coaxial has 140 times the loss of fiber

• An economical solution for rural areas

• Typically lower maintenance costs – no yearly sweep and no need for RF amplifiers approximately every 1000’

• Lower power needs, by as much as 75% in most cases, and some claim as much as 90%

• Typically, there are fewer trouble calls because there are no active devices from the headend/node

• Leakage in the downstream and ingress noise in the upstream is greatly reduced, if not eliminated

RFoG Benefits


• Preserves operator’s investments

• Uses existing CMTS, laser transmitters, return path receivers, DOCSIS modems

• Uses current business processes and procedures for all services

• Supports DOCSIS 1.0 through 3.1

• Seamless upgrade for customers and operators

• Other than the Passive Optical Network (PON) side, the same network architecture and initialization procedures in the headend/node and customer location are used

• Use additional wavelengths for PON overlay

Even more RFoG Benefits!


SCTE/ISBERadio Frequency over Glass (RFoG), SCTE standard 174 2010

OpticalTaps

WDM

HUB ODN Subscriber

1:32

10 to 20 km

1:2Tx

Rx

EDFA

R-ONU

1550/1610

300 MbpsDOCSIS

R-ONU

1550/1610

300 MbpsDOCSIS

DOCSISFrames

• Point to Multipoint (P2MP)

• 10 to 20 km

• 1550, 1610 (PON co‐exist) and 1310 nm

• 1:32 to 1:128 splitter option

• RF US AM/FM return

• Speed determined by DOCSIS

• Uses existing back office and subscriber equipment

• SCTE recommended budget is 25 dB

• EDFA used to compensate for ODN losses

• Gateway to Ethernet PONs

Breaking it Down

1:2


RFoG Metrics

ONU

1550 nm

1610 nm>-24 dBm

COMBINE

HUB ODN SUB

R-ONU

10 Gbps

EDFA+26 dBm

1:2-3.5 dB

R-ONU

WDM

1:32-15.9 dB

CM

-3 dBm Rx

+3 dBm Tx

17 dBmV +/- 3 dB Rx

+33 dBmV Tx

SCTE -25 dB ODN LOSS

-3.5 dB

20 km x .18 = -3.6 dB

-1.2 dB

3.5 + 3.5 + 3.6 + 15.9 + 1.2 + 2 dB = 29.7 dB


EPON/GPON


IEEE Ethernet Passive Optical Network (E‐PON) or Gigabit EPON (GE‐PON)

Institute of Electrical and Electronics Engineers (IEEE) or Ethernet in the First Mile (EFM) standard for using Ethernet 802.3 to 802.3ah‐2004 packets in a PON.


• 10 and 20 km spans

• G.652 fiber

• RF overlay (CATV analog video) possible

• 1:32, 1:64 splitter options

• Downstream, 10/100 Mbps, 1.244 Gbps, 1490 nm

• Upstream, 10/100 Mbps, 1.244 Gbps, 1310 nm

• Symmetrical or asymmetrical

Breaking it Down

1490 nm / 1310 nm E-PON

OpticalTaps

ONU

ONU

WDM

HUB ODN Subscriber

1490/1310

1 GbpsOLT

DPoE

1:32 or 1:64

1490/1310

1 Gbps

20 km

EthernetFrames


IEEE Gigabit Ethernet Passive Optical Network (10GE‐PON)

Institute of Electrical and Electronics Engineers (IEEE) or Ethernet in the First Mile (EFM) standard for using Ethernet 802.3 to 802.3av packets in a PON.


• 10 and 20 km spans

• G.652 fiber

• RF overlay (CATV analog video) possible

• 1:32, 1:64, 1:128 and 1:256 splitter options

• Downstream, 10/100 Mbps, 1 /10 Gbps, 1577 nm

• Upstream, 10/100 Mbps, 1/10 Gbps, 1270 nm

• Symmetrical or asymmetrical 10 GE‐PON optical spectrum allocation for coexistence between 1 GE‐PON, 10G‐EPON and RFoG!

Breaking it Down

1577 nm / 1270 nm 10GE-PON

OpticalTaps

ONU

ONU

WDM

HUB ODN Subscriber

1577/1270

10 GbpsOLT

DPoE

1:32 or 1:64

1577/1270

10 Gbps

20 km

EthernetFrames


DPoE

HFC vs. E‐PON

WDM

Headend/HUB

Amplifiers

Fiber Distribution Hub/Cabinet1xN

Subscribers

CMTSEdge QAMs

1490 nm / 1310 nm1577 nm / 1270 nm

OLT

1550 nm

1310 nm

HFC Node

COMBINE

CM

Coax Tap

Optical Tap

EthernetFrames

HFC/ODN

Back Office(DNS, DHCP, SNMP, TFTP,

Syslog, ToD)

Tx

Rx

E‐PON uses an optional RF overlay at a wavelength of 1550 nm.10 GE‐PON uses a 1577 nm downstream and a 1270 nm upstream

DOCSISFrames

10 Gbps1577 / 1270

R-ONU

ONU

R-ONUPass-thru

ONU

ONU


RFoG Compatibility with E‐PON and 10GE‐PON

(DNS, DHCP, SNMP,

dTFTP/TFTP, Syslog, ToD)

NetX/FDC

OLT

1490 nm / 1310 nm E-PON 1577 nm / 1270 nm 10GE-PON

OpticalTaps

ONU

ONU

CMTSEdge QAMs


CM


COMBINE

OSS / HUB HFC/OSP/ODN

Migration to E-PON and 10 GE-PON uses the same passive fiber network

Subscriber

R-ONU

1550/1490/1577 ->

<- 1610/1310/1577

1550/1610

1490/1310

1577/1270

1310/1550

10 Gbps

1 Gbps

300 Mbps DOCSIS

100 Mbps DOCSIS

DPoE

Voice

ONU

MDU/Business

CM

RFoGEDFA

1:16 or 1:32Optical Splitter/Coupler

Ethernet and DOCSISPackets

DOCSISPackets

1:2

R-ONU

R-ONU

Pass-thru Port

1577/1270

10 Gbps

WDM

5 – 1000 MHz


EPON Components – Optical Line Terminal (OLT)

OLT ODN

• Connects the hub to the ODN and ONU

• Time reference for the network

• Allocates bandwidth to the ONUs

– Multipoint Control Protocol (MPCP)

– Dynamic Bandwidth Algorithm (DBA)

• Performs initial and periodic ranging of ONUs

• Controls ONU registration

FDC Optical Splitter Optical Tap ONU


EPON Components ‐ Optical Distribution Network (ODN)

OLT ODN

• The access network for PON and RFoG

• Contains the FDC/FDH or V‐HUB

• Optical splitters used to provide split options

• Optical Taps



EPON Components ‐ Fiber Distribution Cabinet

OLT ODN

• The fiber distribution cabinet (FDC) or fiber distribution hub (FDH) or virtual Hub (V‐Hub)

• Optical splice trays

• Optical bulk head

• Optical splitters

• V‐Hub is active and may contain EDFA’s for RFoG technologies



EPON Components ‐ Optical Splitters

OLT ODN

• Optical splitter is used in different architectures

– 1:32

– 1:64

– 1:128

– 1:256



EPON Components ‐ Optical Tap

OLT ODN

• Similar to an HFC coaxial tap

• Passive optical tap

• Also known as a Multiport Service Terminal (MST) or Network Access Point (NAP)

• SC/APC Female bulkhead



EPON Components ‐ Optical Network Unit

OLT ODN

• ONU synchronizes with the OLT through the time stamps of the downstream control frames

• ONU waits for a discovery gate frame

• ONU performs discovery processing, including ranging, obtaining an LLID, and requesting bandwidth

• Once registered, ONUs can send data only in the allocated time slots




• 20 km

• 1:32 splitter option

• ATM

• Downstream, 1550 nm analog, 1490 nm digital

• Upstream, 1310 nm digital

• ITU‐T G.984 G‐PON is the current standard for G‐PON networks.

ITU‐T G.982 PON

ITU‐T G.982 PON developed in the early 1990s, became a standard in 1996.

Passive Optical Network

WDM

1:32Split

Optical Distribution Network20 km Distance Limit

GPONOLT

Fiber

Subscriber

Fiber Distribution Cabinet

ONT

TapDrop

Breaking it Down

GEMFrames



• 20 km

• G.652 fiber

• 1310, 1490 and 1550 nm wavelengths

• 1:32 splitter option

• ATM

• Security method is churning

• Downstream 1550 nm analog, 1490 nm digital, 622 Mbps (OC‐12)

• Upstream 1310 nm digital, 155 Mbps (OC‐3)

ITU‐T G.983 A‐PON B‐PON

ATM PON used ATM cells, later G.983 was finalized as Broadband PON with support for Ethernet

Passive Optical Network

WDM

1:32Split

Optical Distribution Network20 km Distance Limit

Fiber

Subscriber

Fiber Distribution Cabinet

ONT

TapDrop

Breaking it Down

GPONOLT

GEMFrames



• 20 km to 60 km (latter provided via ITU‐T G.984.6 GPON reach extension standard)

• G.652 fiber

• 1:32 and 1:64 splitter options

• SONET and Ethernet can be sent via G‐PON encapsulation method (GEM)

– ATM removed from G‐PON

• Enhanced security (G.984.3)

• Downstream 2.488 Gb/s (also specifies 155, 622, & 1.244 Gb/s rates), 1490 and 1550 nm

• Upstream 1.244 Gb/s, (also specifies 155, 622 Gb/s rates), 1310 nm

• Asymmetrical (2.488 Gb/s downstream, 1.244 Gb/s upstream) most widely deployed

– Examples: Verizon FiOS, Cox Communications, and most European and South American MSOs

ITU‐T G.984 G‐PONGigabit‐capable Passive Optical Network


NG‐PON1/XG‐PON(ITU‐T G.987)• Not backward compatible

with GPON• WDM Coexistence (parallel

networks) • 10 Gb/s down and 2.4 Gb/s

up

ITU‐T G.987 NG‐PON, 10G‐PON/XG‐PONNext Generation, Passive Optical Network (NG‐PON) or 10 Gigabit PON.

WDM

Single Fiber

SeparateLambdas

2.5G x 1.25GGPON (ITU G.984.5)

10G x 2.5GXG-PON1 (ITU G.987)

10G x 10GNG-PON2 /

TWDM-PON (ITU G.989)

Optical NetworkTerminal (ONT)

1 or all OLTsmust remainin service as

long as 1 ONTis in serviceand service

tier is offered.

R-ONU

R-ONU

R-ONU

R-ONU

R-ONU

R-ONU

GPON2.5G x 1.2G

GPON2.5G x 1.2G

XG-PON110G x 2.5G

XG-PON110G x 2.5G

NG-PON210G x 10G

NG-PON210G x 10G

NG‐PON2/XG‐PON2 (ITU‐T G.989)• Not backward compatible with GPON nor with XG‐PON1• 2.4 Gb/s x 2.4 Gb/s, 10 Gb/s x 2.4 Gb/s, 10 Gb/s x 10 Gb/s per customer (40 Gb/s for entire network with

WDM on 4 wavelengths• Time and wavelength division multiplexed passive optical network (TWDM‐PON) • Defines use of 4 or 8 wavelengths


PON Metrics

ONU

1490 nm / 1577 nm+2 dBm

HUB ODN SUB

ONU

10 Gbps

1:2-3.5 dB

R-ONU

WDM

1:32-15.9 dB

> -27 dBm Rx

> +2 dBm Tx

-29 dB ODN Loss

-3.5 dB

20 km x .18 = -3.6 dB

-1.2 dB

3.5 + 3.5 + 3.6 + 15.9 + 1.2 + 2 dB = 29.7 dB

OLT

1310 nm /1270 nm> - 27 dBm


PON SummaryStandard Distance Split Bandwidth

(DS/US) Protocol Video Wavelengths

PON ITU-G.982 20 km 32 10 Mbps / 10 Mbps

SONET/SDH,ATM, T1/E1 n/a 1550 nm DS

1310 nm US

A-PON ITU-G.983 20 km 32 622 Mbps / 155 Mbps ATM n/a 1550 nm DS

1310 nm US

B-PON ITU-G.983 20 km 32 622 Mbps / 155 Mbps

POTS, ISDN, SONET/SDH,

ATM, Ethernet, T1/E1

RF Overlay1550 nm RF DS

1490 nm DS1310 nm US

G-PON ITU-G.984 20 km 32 and 64 2.488 Gbps / 1.244 Gbps GEM Data Only

1550 nm RF DS 1490 nm DS1310 nm US

NG-PON1XG-PON1 ITU-G.987 20 to 60 km 32 and 64 10 Gbps /

2.5 Gbps GEM RF Overlayw/ WDM

1577 nm DS1270 nm US

NG-PON2TDWM-PON ITU-G.989 20 to 60 km 32, 64, 128

and 2562.488 –10 Gbps XGEM RF Overlay

w/ WDM

1596-1603 nm DS 1524-1544 nm US

WideE-PON /GE-PON

IEEE 802.3ah 10 to 20 km 32 and 64 1.244 Gbps Ethernet IP 1490 nm DS

1310 nm US

10GE-PON IEEE 802.3av 10 to 20 km 32, 64, 128, 256

and beyond 10 Gbps Ethernet IP 1577 nm DS1270 nm US

RFoG SCTE 174 20 km 32, 64 and 128 Depends on DOCSIS DOCSIS QAM/FM

1550 nm DS1310 nm US non-

PON1610 nm US PON

1

2

3


DPoE


What is DPoE?

“DOCSIS Provisioning of EPON (DPoE) specifications are a joint effort of Cable Television Laboratories (CableLabs), cable operators, vendors, and suppliers to support EPON technology using existing DOCSIS‐based back office systems and processes. DPoEv2.0 specifications augment the DPoE v1.0 specifications to provide requirements for additional service capabilities and corresponding provisioning and network management capabilities.”

DOCSIS® Provisioning of EPON (DPoE™) Specifications create an architecture and serve as necessary specifications for enabling Ethernet Passive Optical Network (EPON) equipment to be provisioned using existing DOCSIS‐based provisioning systems and policies, and to provide network services over EPON access networks to business customers.

From the Specification Document


DPoEv1.0 Specifications

MULPISpecifications for support of a subset of DOCSIS MULPI functionality plus EPON requirements

MEFSpecifications for MEF services added to DOCSIS stat configuration provisioning model

Ethernet OAMExtensions beyond IEEE 802.3ah and IEEE 802.3av OAM requirements

DEMARCSpecification for automatic configuration of demarcation device

ArchitectureDefines the overall services architecture for DPoE Network Security (SEC)

Provides transparent support of DOCSIS device authentication, code verification and additional security

IPNE Best practices and requirements for IP network element management and operations

OSSI Specs for support of a subset of DOCSIS 3.0 OSSI functionality with additional EPON

Requirements

PHYOptions within EPON declared mandatory and

adds additional requirements

DPoE v1.0 Specifications DPoE v1.0

Specifications


Overall Architecture Slide

HUB

Coax with RF amplifiers and RF taps

Fiber Distribution Hub/Cabinet1x32

Subscribers

HFC Fiber

HFC Node CM

Coax Tap

Optical Tap

EthernetPackets

HFC/ODN

Back Office(DNS, DHCP, SNMP, TFTP,

Syslog, ToD)

1490 nm / 1310 nm (1 G)

1577 nm / 1270 nm (10 G)

DOCSISFrames

OLT

DML

VCM

VCM

DPoE 1 Gbps1490 / 1310

CMTSEdge QAMs

1550 nm

1310 nmTx

Rx

WDM

COMBINE

OSS

10 Gbps1577 / 1270

ONU

ONU

10 Gbps1577 / 1270

R-ONU

ONU

R-ONUPass-thru

NOC


Key Components of DPoE System

IPNetwork

ONU

OLT

DML

VCM

DPoEBack Office(DNS, DHCP, SNMP, TFTP, Syslog, ToD)

DOCSIS OSS

E‐PON ONU

ONU

ONUONU

MDUBusiness

SDU


Summary• FTTx deployments are underway now.• The main technologies will be RFoG, EPON and

GPON. Many operators starting with RFoG, similar to HFC. Using RFoG pass-thru, operators will transition to PON style network.

• DPoE and DPoG allow MSOs to use their back office provisioning systems.


Appendix


FTTx: Friend or Foe?

Ethernet PON

Carrier Ethernet Networks

CWDM Advanced Fiber

Networks

Cable’s Fiber to the Home

CWDM/DWDM ‐Bandwidth Demand

Metro EOptical Networks

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CWDMGrid


Fiber Colors

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