Carriers and access
Week News Abstract For Fiber Series in 10GTEK
The abstract is mainly about the optical communication related products,including: SFP,QSFP,FTTH,GPON,EPON,SFPPLC,PTN,ODN,Sfp Transceiver,Optic Transceiver,Optical module,Optical devices,optical communications,Optical transceiver module,Etc.
Green is PON's color
In the past 15 years, the telecommunication industry has been intensely focused on supplying more bandwidth to satisfy the ever-increasing consumer demand for high-speed internet, IPTV, gaming, and whatever other service that can be delivered satisfactorily over the network. The fallout has been a drastic increase in the power consumed at the central office (CO), along with a similarly drastic increase in the costs of supplying that power, both in terms of dollars and ultimately the far-reaching effects on the environment.How much impact does the telecommunication industry's drive for higher access speeds have on the planet? Is there a technology that can slow the trend of higher power for higher speeds?
Staying ahead of the access bandwidth curve with WDM-PON
Carriers and access bandwidth providers have undergone a somewhat frustrating churn through passive optical network (PON) architectures over the last decade in an attempt to get ahead of the bandwidth-escalation curve. Yet, despite billions in infrastructure investments, they have never quite caught up, as the access bandwidth curve continues to grow steeper. Fortunately, WDM-PON technology provides the scalability that access network operators now understand they need to get ahead of bandwidth demands.Yet initially, the WDM-PON category was defined by approaches that used proprietary technologies and complex architectures in an attempt to lower initial capital expenditures (capex) per subscriber. These early strategies were at best misguided, as they missed the whole point of WDM-PON: Using an access architecture that is compatible with the remainder of the network enables substantial savings and ensures scalability.Today, a more mature WDM-PON is emerging that leverages off-the-shelf components and other existing technology, as well as standard WDM and Ethernet protocols. Sometimes referred to as WDM access, sometimes next-generation access (NGA), this newest spin on WDM-PON puts network operators cost-effectively in front of the bandwidth curve. It also offers low total cost of ownership (TCO) and flexibly accommodates ongoing growth in bandwidth-intensive, runtime-sensitive service traffic.
Is Active Ethernet best FTTH option for Google?
FEBRUARY 24, 2010 By Stephen Hardy -- Google’s plans to test 1-Gbps open access FTTH networks has drawn considerable attention -- particularly from equipment vendors who believe their Active Ethernet technology would provide a perfect fit.Active Ethernet, which involves point-to-point links from the central office to the FTTH subscriber, has already proven popular for open access networks in both Europe and the United States because it is easier to support multiple service providers on the same infrastructure with this technology than PONs. Because the bandwidth on the connection isn’t shared, it’s also an efficient way of ensuring a 1-Gbps connection to each subscriber. (For more, see "Active Ethernet FTTH offers PON alternative.")For these reasons, “Google will use Ethernet FTTH or Active Ethernet as the access technology for this network,” predicted Jeff Heynen, directing analyst, broadband and video, at Infonetics Research in an email to Lightwave. “Because it will be working with municipalities and will have direct access to ducts to reduce the amount of trenching it will have to do, Google will be able to eliminate the most expensive aspect of the build out. Equipment costs are comparable to GPON, though operational costs are higher due to the active electronics in the field. However, those costs will be a small price to pay to achieve speeds cable and telco operators can only dream of.”Suppliers of Active Ethernet equipment happily agree. “Active Ethernet is offering a straightforward approach for an open access network and is a proven technology that has been successfully deployed in various city networks around the U.S. for many years,” wrote Irit Gillath, vice president, product line management at Telco Systems, in an email to Lightwave by way of example. “We have customers who have offered 1-gig open access to their residential users since the early 2000s.”Heynen noted that Google has previously funded companies with innovative technologies, which led him to speculate about their potential interest in WDM-PON. However, Juan Vela, director, solutions marketing and strategy for Occam Networks, believes Google will want to make the networks as easy to build and manage as possible.“There’s a level of complexity that comes with either WDM-PON or even just traditional GPON or EPON that requires some sophistication in the operations of the network operator,” he asserts. “So if I want to become a network operator, and I have no background in operating a facility, do I want to experiment and teach myself how to run a PON network?”Heynen listed ADTRAN, Allied Telesis, Calix, Cisco, Occam Networks, Packetfront, and Zhone as among the Active Ethernet suppliers that will bang on Google’s door. However, how Google will answer those knocks is uncertain.Vela, for example, Vela says that Occam has already contacted the search engine giant. “We got the cordial call back saying, ‘Thank you, we know you’re out there.’ But that’s about as far as it went,” he recalls.Vela is convinced his experience won’t be unique. “If they are truly kind of a disciple of the open model, I think they’re going to go and just define a very basic switch device that becomes this OLT, and I think they’ve already done it themselves,” he says of Google.Gillath is more hopeful, however. While conceding Google’s historical preference for doing things themselves when possible, residential service has unique requirements that she thinks the company will need to consider.“The first is that a residential customer needs a highly reliable product. We all know that sending a technician to a site is extremely expensive and takes time till reached. Second, the certification that a product has to go through in order to go inside homes is very strict. While these are all achievable, it will delay their time to market if they choose to design their own product,” she wrote. “Third -- and this would depend on their installation model -- most US residential FTTH deployments utilize outdoor devices where the fiber CPE (or ONT) is located outside of the premise. Creating an outdoor solution (that will also be reliable) requires additional expertise and experience.”With these factors in mind, Gillath could also see Google selecting a vendor to build something specifically to their requirements.Regardless of where the equipment derives, the use of Active Ethernet in Google’s networks would give the technology a marketing shot in the arm. “I would think that Google’s initiative will enhance the visibility of Active Ethernet in the U.S. similarly to what Verizon’s deployment did to PON,” Gillath speculated. “While many projects have proven that Active Ethernet can be more economical and by far technologically superior to PON, there are still people that are left unconvinced. A successful deployment by Google can certainly help to boost demand.”
The above information is edited by 10GTEK.
10GTEK TRANSCEIVERS CO., LTD (Hereinafter refered to as 10GTEK) is specialized in developing and manufacturing Fiber Optical Transceivers and High Performance Cables which are wildly applied in Datacom, Telecom and CATV, providing customers with top quality and cost effective products. Our High Speed Cables cover Passive SFP+ Cable, Active SFP+ Cable, QSFP+ cables, MiniSAS (SFF-8088) Cables, CX4 Cables, Harness cables, Breakout Cables, Patchcords. We also manufacture Fiber Optic Transceivers like 10G XFP, 10G SFP+, SFP DWDM/ CWDM, GBIC, etc. The prompt response and excellent customer support contribute to clients‘ full satisfaction.Today, 10GTEK has been growing fast in the optical field for its unique and competitve excellence which has got a high attention from datacom and telecom.
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