FTTH Technology Developments and Trends. Stephen Hardy Editorial Director & Associate Publisher Lightwave
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1 FTTH Technology Developments and Trends Stephen Hardy Editorial Director & Associate Publisher Lightwave
2 Agenda Where we are now The next generation of FTTH Cable operators and FTTH Residential gateways evolve Transceiver-level technology advances Cabling and enclosure advances Conclusions
3 FTTH popularity continues to grow Source: FTTH Council, Feb 2011
4 Three well-established technology options EPON Leverages IEEE standards Benefits from volume production of Ethernet components for applications other than FTTH Particularly popular in Asia GPON Leverages ITU-T/FSAN standards work Favored by Western carriers who helped write the standards Standards generally slower to be completed than EPON, but greater transmission capacity Point-to-Point Ethernet Also leverages IEEE standards and Ethernet economies of scale Uses more fiber, so costs can be higher than PON Currently provides greatest bandwidth potential Most easily accommodates open access where several service providers share the same network
5 10G PON comes next IEEE 802.3av (10G-EPON) standards arrive first IEEE P Working Group (SIEPON) seeks system-level interoperability SIEPON = Standard for Service Interoperability in Ethernet Passive Optical Networks EPON system-level interoperability specifications covering equipment functionality, traffic engineering, and service-level quality of service (QoS) and class of service (CoS) mechanisms Management specifications covering: equipment management, service management, and power utilization. Draft 2.0 of standard due to be posted for comments this week
6 GPON also moves to 10G NGPON specifications in two groups NGPON1 XG-PON1 is asymmetrical XG-PON2 symmetrical Both can be applied to current infrastructure NGPON2 More advanced technologies that would require infrastructure changes WDM-PON an example
7 Standards are similar but not identical Both offer asymmetrical (10G downstream, something less upstream) and symmetrical (10G both ways) options XG-PON1 offers 2.5G upstream; 10G EPON offers 1G upstream Both provide potential for greater bandwidth, longer reach, and more subscribers per PON Can be applied to existing PON systems
8 Applying XG-PON to existing GPON network US = upstream DS = downstream Vid = video Source: Ericsson
9 Enabling technology is in place Optical line terminal (OLT) and optical networking unit/termination (ONU/ONT) semiconductors are available Transceivers are becoming available as well
10 Deployment status Trials have begun China Mobile, China Telecom, Verizon, Portugal Telecom, etc. Systems are reaching commercial availability Alcatel-Lucent, FiberHome, Huawei, ZTE, others
11 But when will deployments come?
12 A word about cable TV operators Cable TV operators will stay with hybrid fiber/coax networks for as long as possible But fiber access options are being developed RF over glass DOCSIS Provisioning of EPON/Ethernet (DPoE) 10G EPON
13 New requirements for residential gateways Drive to integrate currently separate systems Routers, digital video recorders (DVRs), network attached storage Need to support both wired and wireless elements Accommodate legacy and smart /future home devices Support new services, such as home security
14 Transceiver-level advances PON on a stick Pioneered in China and Japan Incorporate ONU functions within transceiver Supports use of PONs for business services, including DPoE Greater levels of integration PIC-based transceivers near market readiness
15 Previous trends continue in cables and enclosures Bend-insensitive fiber becoming standard in many cable offerings More suppliers offering this technology Fiber management emphasizes flexibility, smaller sizes Modular designs enable evolution as needs evolve
16 Conclusion Focus of technology development in current EPON and GPON on cost reduction Next-generation 10G technology here soon Cost reduction also important here Innovation inside the residence next big area Cost, competition, and user requirements will drive how quickly new technology is deployed
17 Thank you! Stephen Hardy
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