To achieve a complete optical network with POF for FTTH and FTTD
Until recently, telecoms operators have provided two service-voice and data-over DSL (ADSL, VDSL2). Both are relatively tolerant to packet loss and fluctuations in quality-of service (QoS). The bandwidth requirement for voice is low. But the limited bandwidth of DSL is hard to satisfy the future bandwidth connection.


Solving the "last mile" problem is a goal both the telecommunication and cable industries have pursued for years without discovering a single, easily implementable solution.
Fiber to the home has always been an attractive option to the emerging business of IPTV, e-paper, VOIP, remote medical, remote education, video meeting, remote office, e-commerce.  A triplay service will be provided by telecom operators soon worldwide.
    The number of households with optical fiber network connections will grow by nearly 43% worldwide in 2008 and will continue to grow at rates above 30% a year through 2012, when the number of optical fiber-connected households will reach nearly 90 million globally, according to a major new report from CMP's Heavy Reading (www.heavyreading.com), the market research division of Light Reading (www.lightreading.com). The transition to FTTH is now well underway in many countries, including China, Denmark, Netherlands, France, Hong Kong, Japan, Korea, Sweden, Taiwan, and the U.S, etc.. Over the next five years, we expect most other developed countries to join that list, and fiber will also have a significant impact in relatively less developed telecom markets, including India, Russia, and the Middle East.
 
    The dominant media for FTTH technology at the moment is glass optical fiber (GOF). FTTH provides a future-proof network in that we do not have to go through the hassles of upgrading from ADSL to XDSL to digital co-ax to digital wireless. But the biggest problem to prevent FTTH rapid spread is the high equipment and installation costs as the components and fiber layout cost stand high. In other words, FTTH services have not yet become prevalent. The current so called FTTH in most places are in fact a combination of FTTx+xDSL technology. A true FTTH means fiber-to-the-wall, fiber-to-the-hub, fiber-to-the-desk (FTTD).
 
     Glass optical fiber (GOF) meets big problem into the room or desk even though it is ideal media for long distance data transmission with high bandwidth and extremely low attenuation. Its thin core (6.25-8(m) makes the high precision interconnection very difficult and thus frequently results in a high connection attenuation, the installation and the component costs are greatly increased. Furthermore the lack of flexibility and strength makes the layout and installation costs increase significantly as well. GOF is really difficult to be used within the building and houses (rooms) and to be widespread. GOF can only spread to the roadside and the building side and could not come into the building inside. Then the bottlenecking occurs. How to efficiently achieve a true fiber-to-the desk (FTTD) or fiber-to-the-home (FTTH) with a cost effective solution is a challenge to the industry.
     Plastic optical fiber (POF) has many advantages over glass in terms of thick core diameter, better flexibility and high tolerance for the interconnection. It does not need electric powering and is immune to lighting and other transients. Plus POF, also featuring with high bandwidth, vibration resistance, EMI immunity and easy installation and low cost, becomes the debottlenecker. These properties of the fiber lead to lowest powering costs and lowest operational costs (such as maintenance, provisioning and facilities planning). 






   Thanks to the contrasted advantages of POF with GOF, current commercial solutions can deliver a bandwidth of 100 Mbps data over 50-100 m of standard 1 mm POF. As well as the transceivers from Avago, several European companies are offering these solutions, including Firecomms in Ireland, Luceat in Italy and DieMount in Germany. Shenzhen Dasheng in China can also offer a custom solution to solve the last "one kilometer" problem and fulfill a complete optical network.
   Together with GOF, POF can fulfill the task of a complete optical network and truly achieving a FTTH and FTTD and intelligent home and office networking. GOF serves as long distance data communication and transmit the contents of service providers to the building, then POF finish all the short distance communication within 100 meters. Shenzhen Dasheng forecast that the tendency of the future FTTH solution will be GOF for outside of the building and POF for inside of the building.




Many companies are already providing POF component accessories such as connectors, transceivers, fiber, interface cards and hubs, etc. They include Mitsubishi Rayon, Toray, Asahi Chemical, Hewlett-Packard, Panasonic, Toshiba, AMP, NEC, Sharp, Motorola, Honeywell, Adaptec, Molex, BOF, Sumitomo Electric, Leviton, Sony, Avago, Luceat, Electronic Links International, Firecomms, Diemount GmbH, Tyco, etc. These companies are working together to set POF standards for fiber-to-the-home and fiber-to-the-desk applications. They are also working closely with important standards-setting groups such as the ATM Forum, International Electrotechnical Commission (IEC), EIA/TIA, NEMI, VESA and IEEE 1394 standards committees. In May 1997, POF was recognized and approved by the ATM Forum as a viable medium for use in 155-Mbps ATM horizontal links to 50 meters. Today, IEE 1394b is in final voting of a specification that includes a POF solution of 250 Mbps over 50 meters.
 
    There are several industry organizations concerned with education and the promotion of POF applications. They include the POF Trade Organization (POFTO), HSPN/OMNET and "POF@10G "Consortium, the POF Consortium in Japan, the POF Application Center at University of Applied Sciences (POF-AC) in Nuremburg, EEC, French POF club, POF-ALL Project, and the Istituto Superiore Mario Boella (ISMB) inside the Politecnico di Torino, Italy, Luceat of Italy, Simens and DieMount of Germany, and some POF organizations in the UK, Korea, France, China and Brazil, etc.
 
For more information see:
http://www.firecomms.com
   Here, we must say, POF is not a competitor of GOF in FTTH and FTTD, truly a supplementary partner with GOF.
   With the industrialization and large scale production of optical components such as web card, transceiver, router, the cost of those parts will come down. We estimate in the future all the system cost for POF part in FTTH will be around USD120/home. Then naturally and reasonably, FTTH can be wide spread and popular and come to us more closely and eventually become a reality.
 
     Shenzhen Dasheng Optoelectronic Technology Co., Ltd started to manufacture PMMA optical fiber since late 2006 and achieved a daily production capacity of 360,000 meters by the end of 2007.  Starting form the purification of MMA monomer and the polymerization, Shenzhen Dasheng provides the market with high level PMMA optical fiber with an attenuation of 180-190 dB/Km at 650nm. Shenzhen Dasheng has a full intellectual property of making low attenuation PMMA POF for short haul data communication. Shenzhen Dasheng will continue to be dedicated to improve the property of its PMMA optical fiber and promote the application technology to more ahead.
     Shenzhen Dasheng, an expert of POF manufacturing and application.