Tag Archives: FTTH

GPON: Optimal Solution to FTTH

Recently, the increasing spread of the Internet is the major driver for the development of new access technologies, which demand more capacities carry to bandwidth. Among these technologies, Fiber to the Home (FTTH) becomes the most suitable choice. An optimal option for FTTH technology, Gigabit Passive Optical Network (GPON) provides one of the most cost-effective ways to bandwidth-intensive applications and establishes a long-term strategic position in the broadband market.

GPON Applies in FTTH

Gigabit Passive Optical Network provides the reliability and performance expected for business services and an attractive way to deliver residential services. It enables Fiber to the Home (FTTH) deployments economically resulting to accelerate growth worldwide. The following picture shows how the GPON OLT device deployed in a typical GPON network delivers services to residential homes. Signals from the central office OLT transmits to the splitter, then the splitter spreads the signal to the GPON ONT which connects residential homes.


Features of the GPON Networks
  • Provide downstream speeds of 2.5 Gbps and upstream speeds of 1.25 Gbps.
  • Support long distances of up to 20 km and unlike copper does not suffer from decreasing performance over distance.
  • Standards based and equipment are available from a large and growing number of vendors giving service providers the peace of mind with being locked into a single vendor.
  • Inherently secure wherein wiretapping, eavesdropping and other hacking is nearly impossible.
Advantages of GPON Networks

The most obvious advantage of PON networks is that a single shared optical fiber can support multiple users through the use of inexpensive passive optical splitters. In GPON networks, up to 64 ONTs can share one fiber connection to the OLT. This makes Gigabit Passive Optical Network an attractive option for service providers wanting to replace copper networks with fiber, particularly in high-density urban areas.

  • Allow service providers to deliver more capacity to carry bandwidth-intensive applications.
  • Provide one of the most cost-effective ways for a service providers to deploy fiber.
  • Provide a future proof mode of access as the speed of the broadband connection is limited by the terminal equipment rather than the fiber itself. Future speed improvements can be achieved via equipment upgrades before any upgrades on the fiber itself.

Demands for access networks have promoted deployment of FTTH technologies. As an optimal solution to these technologies, GPON provides the unique features and advantages applied in FTTH. To meet the demand of Gigabit Passive Optical Network in access networks worldwide, Fiberstore has developed GPON/EPON system solutions. For more information about it, please visit Fiberstore.

10G EPON Shipments Will Keep Growing

FiberStore news, with the rapid global deployment of FTTH, PON global market scale is constantly expanding, but the current PON market growth is beginning to slow down. In the recent “2013 China Optical Network Seminar”, Ovum principal analyst Julie Kunstler, said in an interview, during 2011-2012, the global GPON / EPON OLT has begun to decline in shipments, the total revenue of PON equipment market is also declined.

However, although the growth of entire PON market started to slow down or even a decline, but 10G PON market has begun to be favored. Julie Kunstler said that, although it is not completely sure which sort of next generation PON technology will become the mainstream in the future, but in Ovum’s expectations, the shipments of 10G EPON OLT will maintain a growth trend.

As for the Chinese broadband access market, Julie Kunstler believes that, due to the different wiring conditions of each region and each district, the future Chinese FTTx market penetration is expected to reach 40% -50%, the future will be a variety of access technologies co-exist, including PON, ADSL, VDSL, etc.

Julie Kunstler pointed out that, 2012 was the first year GPON OLT shipments beyond that of EPON, but the OLT total market has already begun to decline. Data show that, in the first quarter of 2013, EPON OLT shipments decreased 7%, compared to the same period down 46%; GPON OLT shipments decreased by 9%, an increase of 28%. In revenues, in the first quarter of 2013, EPON revenue decreased 25%, down 46%; GPON revenues decreased 29 percent, an increase of 3%.

Ovum predicts that, in the next few years, global GPON / EPON OLT shipments will further decline, it will be expected to from 41 million in 2012 decline to 13 million in 2018. At the same time, in 2012 GPON / EPON ONT / ONU’s shipments increased 43 percent compared to 2011, 2012 EPON ONT / ONU shipments still ahead of GPON ONT / ONU shipments, in 2013 GPON ONT/ONU shipments will just run after EPON.

Although entire PON market growth started to slow down or even a decline, but 10G PON market has begun to rise. Julie Kunstler said that, although what sort of future generation PON technology will become the mainstream is still not completely sure, but in Ovum’s expectations shipments of 10G EPON OLT will maintain a growth trend, and its application scenarios will be mainly reflected in FTTB, mobile backhaul, etc. Ovum forecasts, 10G EPON OLT’s shipments will maintain growth trend in 2018 will reach 500 thousand, 10G GPON OLT’s shipments will still be relatively small.

The Process Of FTTH Network From 2011 To 2013

FiberStore news, the Chinese traditional fiber optic connector manufacturers not fared well in 2013, according to statistics, in the first quarter shipments of fiber optic connectors for FTTH “cold junction” decreased nearly 80% compared to 2012, which is regarded as technical magic for rapid deployment of FTTH by operators, gradually fell out of favor.

In the FTTH project, inevitably need to connect 5-7 fiber breakpoint. Before the advent of FTTH, fiber is mainly used for the backbone network, the breakpoints are using fusion splicer to connect, but because of its fusion splicer bulky, expensive, difficult to master the technology, these characteristics make it does not apply to FTTH project fast, low cost, convenience requirements.

Therefore, a few years ago, the industry developed fast connector, simple, convenient and low cost of FTTH splice junction, called the cold welding technology. United States, Japan, South Korea, which are the earliest development scale of FFTH, all have used the cold welding technology, verify the maturity of this technology.

“Hot melt” Return

In 2011, China Telecom launched the “city network” strategy, start the FTTH large-scale construction of China, and follow the international operators used cold welding technology. For a time, Chinese fast connector market raised quickly.

In the second half of 2011, cold welding technology began a large-scale unsuitable. The cold welding industrial chain which lacked details exposed its shortcomings: Although the same shape, but the heart technology of slot technology and matching fluid were unable to mark the international technology, below standard connectors entered into the network, caused massive FTTH quality problems.

In 2012, the three big operators reflected on this, Wei Leping, China Telecom Science and Technology Committee, noted: “FTTH network with serious quality problems, the network Splice, splitters and other products need to strengthen quality inspection.” But the problem was not changed with the operator’s attention. At present, in addition to Shanghai and Jiangsu, FTTH from other provinces still have serious quality problems.

However, it also provides an opportunity for some vendors. Fusion Splicers with “Miniaturization, long battery life, low cost, easy to operate” characters became hot topics in research and development.