PLC Splitter Applications in FTTH Network

by http://www.fiber-mart.com

TTH mainly uses PON network technology, which requires a large number of low-cost optical splitters and other optical passive. Optical splitter device is an integral part of FTTH and with the promotion of FTTH, there would be a great market demand. The traditional preparation of optical splitter technology is fiber fused biconical taper (FBT) technology. Its characteristics are mature and simple technology. The disadvantage is that the assigned ones too large, and the device size is too large, which caused the decrease in yield and the rising cost of single channel, shunt reactive stars uniformity will deteriorate. FBT technology based fiber optic splitter preparation techniques have been unable to adapt to the market demand.
PLC splitter or planar lightwave circuit splitter is a passive component that has the special waveguide made of planar silica, quartz or other materials. It is employed to split a strand of optical signal into two or more strands. PLC splitter also has lots of split ratios, and the most common ones are 1:8, 1:16, 1:32, 1:64, 2:8, 2:16, 2:32 and 2:64. There are many types of PLC splitters to meet with different needs in OLT and ONT connection and splitting of optical signals over FTTH passive optical networks. There are seven major package types of PLC splitters according to different applications, i.e. bare fiber splitter, module splitter, rack-mount splitter, Mini Type splitter, Tray splitter and LGX splitter.
Bare fiber optical splitter
ABS splitters
Mini Type fiber splitter
Tray splitter
Rack-mount splitter
LGX splitters
PLC splitter in mini plug-in type
Applications
Bare Fiber PLC Splitter
Bare fiber PLC splitter has no connector at the bare fiber ends. It can be spliced with other optical fibers in the pigtail cassette, test instrument and WDM system, which minimizes the space occupation. It is commonly used for FTTH, PON, LAN, CATV, test equipment and other applications.
Mini Type PLC Splitter
Mini Type PLC Splitter has a similar appearance as bare PLC splitter. But it has a more compact stainless tube package which provides stronger fiber protection, and its fiber ends are all terminated with fiber optic connectors. Connectors are commonly available with SC, LC, FC and ST types. Thus, there is no need for fiber splicing during installation. Mini PLC splitter is mainly used for different connections over distribution boxes or network cabinets.
ABS BOX TYPE PLC Splitter
ABS Box PLC Splitter has a plastic ABS box to protect the PLC splitter to adapt to different installation environments and requirements. Common splitter modules are 1×4, 1×8, 1×16, 1×32, 1×64, 2×4, 2×8, 2×16, 2×32. It is widely used with outdoor fiber distribution box for PON, FTTH, FTTX, PON, GOPN networks.
Tray Type PLC Splitter
Tray type PLC splitter can be regarded the fiber Tray which contains PLC fiber splitter inside a tray. It is often directly installed in optical fiber distribution box or optical distribution frame. FC, SC, ST & LC connectors are selective for termination. Tray type PLC splitter is an ideal solution for splitting at the places that are near OLT or ONU.
Tray type PLC splitter
Rack-mount PLC Splitter
Rack-mount PLC Splitter can be used for both indoor and outdoor applications in FTTx projects, CATV or data communication centers. It uses the 19-inch rack unit standard to contain the PLC splitter inside a rack unit.
LGX PLC Splitter
LGX PLC splitter or LGX box PLC splitter has a strong metal box to house the PLC splitters. It can be used alone or be easily installed in standard fiber patch panel or fiber enclosure. The standard LGX mental box housing provides a plug-and-play method for integration in the network, which eliminates any risk during installation. No filed splicing or skilled personnel is required during deployment.
Mini Plug-in Type PLC Splitter
Mini plug-in PLC type splitter is its small version with a compact design. It is usually installed in the wall mount FTTH box for fiber optic signal distribution.
Above these types of PLC splitters are typically installed to serve for PON and FTTH networks. 1xN and 2xN are the common splitter for specific applications. You can choose the correct one according to you projects and if any more questions pls feel free to contact us for any technical problem.

Loose-Tube and Tight-Buffer Cable Application of FTTH

by http://www.fiber-mart.com

FTTH makes use of Fiber Optic technology to enhance communication for households. FTTH stands for Fiber to the Home, and many experts believe that FTTH cable will soon replace the traditional copper cables. There are various other elements of FTTH. FTTH Flat Drop Cable is generally also known as indoor cable. Other elements of the technology include instrumentation cables and cable glands. Next let us make a brief introduction of cable construction and the difference of Loose-Tube and Tight-Buffer Cable.
Optical-Cable Construction
The core is the highly refractive central region of an optical fiber through which light is transmitted. The standard telecommunications core diameter in use with SMF is between 8  m and 10m, whereas the standard core diameter in use with MMF is between 50m and 62.5m. The diameter of the cladding surrounding each of these cores is125m. Core sizes of 85m and 100 m were used in early applications, but are not typically used today. The core and cladding are manufactured together as a single solid component of glass with slightly different compositions and refractive indices. The third section of an optical fiber is the outer protective coating known as the coating. The coating is typically an ultraviolet (UV) light-cured acrylate applied during the manufacturing process to provide physical and environmental protection for the fiber. The buffer coating could also be constructed out of one or more layers of polymer, nonporous hard elastomers or high-performance PVC materials. The coating does not have any optical properties that might affect the propagation of light within the Breakout Fiber Optic Cable. During the installation process, this coating is stripped away from the cladding to allow proper termination to an optical transmission system. The coating size can vary, but the standard sizes are 250m and 900m. The 250- m coating takes less space in larger outdoor cables. The 900- m coating is larger and more suitable for smaller indoor cables.
Three types of material make up fiber-optic cables:
• Glass
• Plastic
• Plastic-clad silica (PCS)
These three cable types differ with respect to attenuation. Attenuation is principally caused by two physical effects: absorption and scattering. Absorption removes signal energy in the interaction between the propagating light (photons) and molecules in the core. Scattering redirects light out of the core to the cladding. When attenuation for a fiber-optic cable is dealt with quantitatively, it is referenced for operation at a particular optical wavelength, a window, where it is minimized. The most common peak wavelengths are 780 nm, 850 nm, 1310 nm, 1550 nm, and 1625 nm. The 850-nm region is referred to as the first window (as it was used initially because it supported the original LED and detector technology). The 1310-nm region is referred to as the second window, and the 1550-nm region is referred to as the third window.
Glass Fiber-Optic Cable
Glass fiber-optic cable has the lowest attenuation. A pure-glass, fiber-optic cable has a glass core and a glass cladding. This cable type has, by far, the most widespread use. It has been the most popular with link installers, and it is the type of cable with which installers have the most experience. The glass used in a fiber-optic cable is ultra-pure, ultra-transparent, silicon dioxide, or fused quartz. During the glass fiber-optic cable fabrication process, impurities are purposely added to the pure glass to obtain the desired indices of refraction needed to guide light. Germanium, titanium, or phosphorous is added to increase the index of refraction. Boron or fluorine is added to decrease the index of refraction. Other impurities might somehow remain in the glass cable after fabrication. These residual impurities can increase the attenuation by either scattering or absorbing light.
Plastic Fiber-Optic Cable
Plastic fiber-optic cable has the highest attenuation among the three types of cable. Plastic fiber-optic cable has a plastic core and cladding. This fiber-optic cable is quite thick. Typical dimensions are 480/500, 735/750, and 980/1000. The core generally consists of polymethylmethacrylate (PMMA) coated with a fluoropolymer. Plastic Fiber Optic cable was pioneered principally for use in the automotive industry. The higher attenuation relative to glass might not be a serious obstacle with the short cable runs often required in premise data networks. The cost advantage of plastic fiber-optic cable is of interest to network architects when they are faced with budget decisions. Plastic fiber-optic cable does have a problem with flammability. Because of this, it might not be appropriate for certain environments and care has to be taken when it is run through a plenum. Otherwise, plastic fiber is considered extremely rugged with a tight bend radius and the capability to withstand abuse.
Plastic-Clad Silica (PCS) Fiber-Optic Cable
The attenuation of PCS fiber-optic cable falls between that of glass and plastic. PCS Fiber Optic Cable has a glass core, which is often vitreous silica, and the cladding is plastic, usually a silicone elastomer with a lower refractive index. PCS fabricated with a silicone elastomer cladding suffers from three major defects. First, it has considerable plasticity, which makes connector application difficult. Second, adhesive bonding is not possible. And third, it is practically insoluble in organic solvents. These three factors keep this type of fiber-optic cable from being particularly popular with link installers. However, some improvements have been made in recent years.
FTTH (Fiber to the Home) network compared with technologies now used in most places increases the connection speeds available for residences, apartment building and enterprises. FTTH network is the installation and use of optical fiber from a central point known as an access node to individual buildings. The links between subscriber and access node are achieved by fiber jumper cables. Loose-tube and tight buffer cables are commonly used to transmit signals with high speed, which are capable of supporting outdoor or indoor environment. Is there a cost-effective solution that can support both indoor and outdoor environment in FTTH network? To answer this, the construction and comparison of loose tube cable and tight buffer cable will be introduced in the following article.
Loose-Tube and Tight-Buffer Cable
The “buffer” in tight buffer cable refers to a basic component of fiber optic cable, which is the first layer used to define the type of cable construction. Typically a fiber optic cable consists of the optical fiber, buffer, strength members and an outer protective jacket (as showed in Figure 1). Loose-tube and tight-buffer cables are two basic cable design. Loose-tube cable is used in the majority of outside-plant installations, and tight-buffered cable, primarily used inside buildings.
Loose-tube and tight-buffer cables
Loose-tube cable consists of a buffer layer that has an inner diameter much larger than the diameter of the fiber see in the following picture. Thus, the cable will be subject to temperature extremes in the identification and administration of fibers in the system. That’s why Loose Tube CST Fibre Cable are usually used in outdoor application. The loose-tube cables designed for FTTH outdoor application are usually loose-tube gel-filled cables (LTGF cable). This type of cable is filled with a gel that displaces or blocks water and prevents it from penetrating or getting into the cable.Tight buffer cable using a buffer attached to the fiber coating is generally smaller in diameter than loose buffer cable (showed in Figure 2). The minimum bend radius of a tight buffer cable is typically smaller than a comparable loose buffer cable. Thus tight buffer cable is usually used in indoor application.
loose buffer cable
Tight buffered indoor/outdoor cable with properly designed and manufactured can meet both indoor and outdoor application requirements. It combines the design requirements of traditional indoor cable and adds moisture protection and sunlight-resistant function to meet the standards for outdoor use. Tight buffered indoor/outdoor cable also meets one or more of the code requirements for flame-spread resistance and smoke generation.
In short, FTTH cable is transforming the way we communicated in the past; and it will soon become the norm. FTTH network can be increased reoffers high quality fiber cable assemblies such as Patch Cords, Pigtails, MCPs, and Breakout Cables etc. All of our custom fiber patch cords can be ordered as Single Mode 9/125, Multimode 62.5/125 OM1, and Multimode 50/125 OM2 and Multimode 10 Gig 50/125 OM3/OM4 fibers. If you have any requirement, please send your request to us.

How to Reduce the Cost of FTTH Architecture

by http://www.fiber-mart.com

In our digital world, people increasingly require higher bandwidth to facilitate daily life, whether for leisure, work, education or keeping in contact with friends and family. The presence and speed of internet are regarded as the key factor that subscribers would take into account when buying a new house. Recently there are a growing number of independent companies offering full fiber to the home (FTTH) services, ranging from local cooperatives and community groups to new operators. Today’s article will pay special attention to the reasons why we should implement FTTH network and the methods to reduce the cost of FTTH network.
Why Should We Deploy FTTH Network?
No denying that the world is changing rapidly and becoming increasingly digital. People nowadays are knowledgeable workers who rely on fast connections to information stored in the cloud to do their jobs. Therefore, installing superfast FTTH broadband is an investment in equipping communities with the infrastructure they need to not just adapt to the present life, but to thrive in the future.
What’s more, the economic benefits of FTTH, for residents, businesses and the wider community are potentially enormous. While there are upfront costs in FTTH deployments, particularly around the last drop, equipment and methodologies are evolving to reduce these significantly. Fiber to the home is proven to increase customer satisfaction, and enables operators to offer new services, such as video on demand, 4K TV and smart home connectivity.
As well as bringing in economic benefits, FTTH broadband provides local businesses with the ability to expand, invest and seek new opportunities by providing rapid connections to major markets. All of this leads to increased investment in the rural economy, providing residents with more choice and stimulating growth.
What to Do?
Although deploying FTTH network might be similar cost as deploying copper network, there are some methods that you should know about reducing the costs of FTTH architecture. Adopting the following three principles helps achieve FTTH deployment, maximizing return on investment and dramatically reducing deployment times.
1. Reuse the Existing Equipment
Time and the total cost of FTTH deployment are typically relevant with the civil engineering side of the project, such as digging a new trench and burying a new duct within it. Where possible, crews should look to reuse existing infrastructure—often there are ducts or routes already in place that can be used for FTTH and in building deployments. These could be carrying other telecommunication cables, power lines, or gas/water/sewerage. Installing within these routes requires careful planning and use of cables and ducts that are small enough to fit through potentially crowded pathways. Figure 2 shows a generic point-multipoint architecture that fiber jumper plays an important part in it.
FTTH architecture
Additionally utilizing the push and pull cables in FTTH infrastructure simply reduce costs and install time as network installers can easily complete FTTH deployment by using pushing or pulling cables: pushing can be aided by simple, cost-effective handheld blowing machines, or pulled through the duct using a pre-attached pull cord. Even for more complex and longer environment, FTTH deployment can be quickly completed other than requiring expensive blowing equipment to propel the cable through duct.
2. Choose the Right Construction Techniques
If it is time to start digging, always make sure you use appropriate construction methods. The appropriate method will minimize cost and time by making construction work as fast and concentrated as possible, avoiding major disruption to customers or the local area. And remember to make sure you follow best practice and use the right fiber cable and duct that can fit into tight spaces and withstand the high temperatures of the sealant used to make roadways good.
The cable and duct used within FTTH implementations is crucial. Ensure that it meets the specific needs of deployments, and is tough, reliable and has a bend radius. It should be lightweight to aid installation and small enough to fit into small gaps and spaces in ducts. Also look to speed up installations with pre-connectorized cables that avoid the need to field fit or splice.
3. Minimize the Skills Required
Staff costs are one of the biggest elements of the implementation budget. Additionally, there are shortages of many fiber skills, such as splicing, which can delay the rate at which rollouts are completed. Operators, therefore, need to look at deskilling installations where possible, while increasing productivity and ensuring reliability. Using pre-connectorized fiber is central to this—it doesn’t require splicing and is proven to reduce the skill levels needed within implementations.
Conclusion
To cope with the digital world, the network is in constant need of enhancements and the increasingly stressed bandwidth and performance requires ongoing adjustment. Regardless of the FTTH architecture and the technology to the curb, the pressure is on for the network installer to deploy FTTH quickly and cost-effectively, while still ensuring a high quality, reliable installation that causes minimal disruption to customers and the local area. Fiberstore offers a variety of optical equipment that are suitable in telecom field. Our fiber optic cables are available in different optical connector, single-mode and multimode fiber as well as indoor or outdoor cables. For example, patch cord LC-LC are also provided.

What Fiber Attenuator Do You Use? LC Attenuator or SC?

Fiber optic attenuator is an essential passive component in the optical communication system. With the advancement of DWDM technology, as well as the potential to flexibly upgrade the reconfigurable optical add-drop multiplexer (ROADM), the demand for optical attenuator is sure to soar, especially for optical variable attenuator.

Fiber optic attenuator is an essential passive component in the optical communication system. With the advancement of DWDM technology, as well as the potential to flexibly upgrade the reconfigurable optical add-drop multiplexer (ROADM), the demand for optical attenuator is sure to soar, especially for optical variable attenuator.

 

Types of Fiber Optic Attenuators

 

Optical attenuator takes a number of different forms. They are typically grouped as fixed optical attenuator and optical variable attenuator.

 

Fixed Optical Attenuator

Fixed attenuator, as the name of which has indicated clearly, is designed to have an unchanging level of attenuation, expressed in dB, such as 1dB, 5dB, 10dB, etc. Fixed value attenuators consist of in-line type and connector type. In-line type looks like a plain fiber patch cable. It has a fiber cable terminated with two connectors which you can specify types. Connector type attenuator looks like a bulk head fiber connector, with a male connector interface on one end and a female interface connector on the opposite end. It mates to regular connectors of the same type such as FC, ST, SC and LC. Their applications include telecommunication networks, optical fiber test facility, Local Area Network (LAN) and CATV systems.

Optical Variable Attenuator

Optical variable attenuator, or variable optical attenuator, generally uses a variable neutral density filter. It has advantages of being stable, wavelength insensitive, mode insensitive, and offering a large dynamic range. Variable optical attenuator is generally used for testing and measurement, but it is also widely adopted in EDFAs (Erbium-Doped Fiber Amplifier) for equalizing the light power among different channels. Basically, there are two types of optical variable attenuator: stepwise variable attenuator and continuously variable attenuator. Stepwise variable attenuator can change the attenuation of the signal in known steps such as 0.1 dB, 0.5 dB or 1 dB. Continuously variable optical attenuator produces precise level of attenuation with flexible adjustment. Thus, operators are able to adjust the attenuator to accommodate the changes required quickly and precisely without any interruption to the circuit.

 

How to Use Fixed Fiber Attenuator?

 

As shown in the figure below, fixed fiber optic attenuators should be always installed at the receiver end of the link (X in the drawing). This is because it’s more convenient to test the receiver power before and after attenuation or while adjusting it with your power meter at the receiver, plus any reflectance will be attenuated on its path back to the source.

For female to male fixed fiber optic attenuators, we can plug the patch cord to the female fiber optic adapter of the attenuator. And then plug the male plug connector of the attenuator to the equipment directly. For female to female fixed fiber optic attenuators, we should plug the two patch cords to the two female fiber optic adapter of the attenuator (shown in the figure below).

 

Conclusion

Fiber optic attenuator is a passive device used to reduce the power level of an optical signal because too much light can overload a fiber optic receiver and degrade the bit error ratio (BER). To achieve the best BER, the light power must be reduced by using fiber optic attenuator. Fiber-MART provides optical attenuators with various connector types, such as FC/SC/ST/LC/E2000, available with APC or UPC polish. Any question pls feel free to contact me at service@fiber-mart.com

Fiber Optic Splitter Termination Box for FTTH Applications

Fiber optic splitter termination box provides a cost-effective solution for FTTH applications. Nowadays some manufacturers provide this type of box with pre-installed fiber splitters, adapters, splice trays or pre-terminated pigtail assemblies, which help to reduce installation time and cost and satisfy different requirements of customers. Today, this post mainly focuses on the basics of splitter termination box .

 

Fiber Optic Splitter Termination Box Overview

Fiber optic termination box generally refer to the box shape fiber optic management products used to protect and distribute the optical fiber links in FTTH Network. Usually the fiber optic box includes the fiber optical patch panels and fiber optic terminal box. Fiber optic patch panel is bigger size, fiber optic termination box is smaller. Actually there are too many fiber optic boxes and fiber management devices, they are hard to count the types, many manufacturers will make the fiber optic boxes according to their own design and they may give the fiber optic boxes different names and model numbers.

The fiber optic boxes panels can be pre-installed with various kinds of fiber optic adapters, these adapters are the interface via which the fiber box will connect the external devices. Smaller size fiber optic box, the terminal box, is also used for fiber optic distribution and organization. Our typical fiber terminal box are with 12 ports or 24 ports, with a size of 270mm*137mm*45mm. the fiber optic box are made of cold rolling steel and the surface of the box use the technique of dim blowing plastic. This type fiber optic box is typically installed with FC or ST adapters on the panel. This fiber terminal box could be installed on the wall or put in horizontal line.

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Fiber Terminal Boxes

Besides fiber patch panels, one can also count on fiber terminal boxes for fiber distribution and organization. While typical fiber terminal boxes are with 12 ports or 24 ports, 8 ports, 36 ports, 48 ports and 96 ports fiber are available in the markets now. They are often installed with FC or ST adapters on the panel, either on the wall or put in horizontal line.

According to the design, FTB can be further divided into wall mount type and rack mount type.

The wall mount fiber termination boxes are designed for either pre-connectorized cables, field installation of connectors, or field splicing of pigtails. They offer an ideal solution for building entrance terminals, telecommunication closets, main cross-connects, computer rooms and other controlled environments.

 

Fiber Terminal Boxes

Besides fiber patch panels, one can also count on fiber terminal boxes for fiber distribution and organization. While typical fiber terminal boxes are with 12 ports or 24 ports, 8 ports, 36 ports, 48 ports and 96 ports fiber are available in the markets now. They are often installed with FC or ST adapters on the panel, either on the wall or put in horizontal line.

According to the design, FTB can be further divided into wall mount type and rack mount type.The wall mount fiber termination boxes are designed for either pre-connectorized cables, field installation of connectors, or field splicing of pigtails. They offer an ideal solution for building entrance terminals, telecommunication closets, main cross-connects, computer rooms and other controlled environments.

Moreover, in terms of installation environment, there are indoor FTB and outdoor FTB.

Indoor fiber termination box acts as the transition point between the risen cable and the horizontal cable, in this way, it provides operators much more flexibility when managing cables. Besides, indoor FTB makes it possible to leave space for overlength and terminated fibers, as well as for fiber splicing.

The outdoor fiber terminal boxes are environmentally sealed enclosures to distribute fibers for FTTX networks. They are also designed for fiber splicing, termination, and cable management.

Features and Benefits

Fiber optic splitter termination box enables service providers to accelerate their deployments more effectively and is an ideal solution when deploying networks in FTTH applications. And it offers increased efficiency within distinct FTTX network applications. Featuring a compact solution for wall mounting, these termination boxes provide a significant space savings while maintaining hand access to connectors. Following are the features and benefits of deploying fiber optic splitter termination box.

  • Provide a small footprint for splitting, splicing and terminating and are environmentally rated for indoor or outdoor use.
  • Available in several types, each box can equip with splice tray allowing for an input splicing option.
  • Accept standard splitters and splitters can be easily added after the termination box has been installed. And it can accommodate 1×4, 1×8, 1×16, 1×32 fibers, up to 64 fibers.
  • Its small size and flexible mounting options offer easy integration into cell sites and huts, providing on-demand capacity for wireless back haul applications.
  • Offer an economical solution for applications where larger sized FDHs (fiber distribution hubs) may be unfeasible.

Conclusion

Fiber termination box nowadays plays an indispensable role in the field of communication network with greater reliability and flexibility. The continual expansion of broadband networks and the resulting set up of fiber to the home (FTTH) infrastructures make network organizers adopt powerful management and planning systems. Fiber optic splitter termination box is a small part of this system. Fiber -MART can provides comprehensive solutions, any question pls do not hesitate to contact me at service@fiber-mart.com

Passive CWDM VS DWDM – Which to choose?

With current industry advancements trend that has equalized costs of transceivers, in technical battle of CWDM vs DWDM more advancements are in DWDM.

With current industry advancements trend that has equalized costs of transceivers, in technical battle of CWDM vs DWDM more advancements are in DWDM.

 

Lets compare passive CWDM vs DWDM from pure technical application viewpoint:

 

CWDM vs DWDM – Channel Uniformity:

As CWDM spectrum for 18 channels spans from 1260nm up to 1620nm compared to DWDM C-band 1530 – 1565 nm, CWDM has weakness from channel uniformity aspect. Attenuation in wide spectrum is different based on wavelength – for example, typical attenuation of G.652.C optical fiber is 0.38 dB/km at 1310nm wavelength and 0.22 dB/km at 1550nm. So in CWDM system You can get quite great disparity of channel optical performance using different CWDM wavelength. Uniformity of optical channels across whole 1260-1620nm spectrum depends on fiber cable specification. – we suggest checking carefully if You plan using passive CWDM. Especially it is very important for old G.652 specification fiber – it has so called “water-peak” phenomena in range of 1390 and 1490 nm that are not usable for CWDM connections at all. DWDM is clear winner here – due it’s narrow spectrum channel properties on same fiber will be almost identical.

 

CWDM vs DWDM – Capacity:

It’s clear winner here – while maximum capacity of CWDM system is 18 wavelengths all spectrum, DWDM using traditional C-Band 1530 – 1565 nm allow to have 45 100GHz spaced DWDM channels, but with introduction of 50 GHz spaced transceivers we can double number of channels up to 90. In future, we can expect to have 25 GHz and even 12.5 GHz frequency offset even multiplying number of possible channels to 180 or 360. If that is not enough – there is S-band (1460-1530 nm) and L-band (1565-1625 nm) which can be used with DWDM as well, just is not mainstream yet.

 

CWDM vs DWDM – Distance:

Maximum distance of xWDM connection depends on two main factors – maximum budget of optical transceivers and attenuation of all passive elements – fiber itself, number of joints and splices, attenuation of passive filters (Chromatic dispersion as well, but we don’t consider it much a factor up to 80km). If looking on 10G connection data rate, with both, CWDM and DWDM, passive technologies You can have up to 23 dB guaranteed budget using popular SFP+ transceivers (With XFP You can have 26dB budget), what is enough to have 80km WDM link with both technologies. But big advantage of DWDM is, that due it’s narrow spectral width it’s possible to use cost efficient and widely available EDFA (Erbium Doped Fiber Amplifier) boosters, which is one very cost efficient way allowing extension of DWDM reach.

 

CWDM vs DWDM – Spare Parts:

Even optical transceivers are mature elements and failure-rates are very uncommon, introducing WDM technology You would like to have backup stock of all active elements. If You are planning to have just small scale deployment and connect just two or few network nodes, it could mean that You basically need to back up everything – resulting on doubling up of your investment. DWDM is a winner here as well, due availability of Tunable DWDM transceivers, with can replace all Your different wavelength DWDM transceivers with one or two units.

 

Conclusion

CWDM still has price advantages for connection rates below 10G and for short distances with low data rates it’s currently most feasible technology. For more information,welcome to visit www.fiber-mart.com, pls feel free to contact me at service@fiber-mart.com

2 Ports QSFP to QSFP 40G WDM Transponder OEO Converter w/full 3R Support Standalone

FM SKU#:SKU000001G2
Model#:2P-40G-3R-Q-FMOEO
MFG PART#:

QSFP to QSFP 40G WDM Transponder OEO Converter comes with two QSFP ports, are Standalone device that can support the “Three Rs” to Retime,Regenerate and Reshape the optical signal.

Transponders are fiber-to-fiber media converters that convert wavelengths for Wavelength Division Multiplexing (WDM) applications.

Fiber-Mart transponders are protocol and rate-transparent fiber media converters that support SFP, SFP+ and XFP transceivers with data rates up to 11.32 Gpbs, and our transponders provide seamless integration of different fiber types by converting multi-mode fiber to single-mode fiber, and dual fiber to single-fiber.

Fiber-to-Fiber media converters extend network distance by converting wavelengths (1310 to 1550), amplifying optical power. Fiber-MART.Com transponders as re-generators are also an optical – electrical – optical (O-E-O) converter with electrical amplification of the signal by FEC to realize long distances fiber transmission.

Features

    • Support 2U Rack(16 Slots) and independent use.
    • Support network management (Web SNMP, Console).
    • 3R function.
    • Support Jumbo Frame.
    • Transparent Transpor and very low delay.
    • Support DMI function for QSFP fiber module.
    • Support 1*40G Mode and 4*10G Mode.
    • Support Loopback test function.
    • Support hot plugging.
    • Full State Led display.
    • Easy installation.

 

OEO Converter Standalone

OEO Card for 2U Unified Platefrom Chassis

The 2ports OEO card is compatible with 2U Unified Platefrom Chassis. Each card ( SFP+ to SFP+, XFP to SFP+,XFP to XFP,SFP to SFP ) can coexist together in this 2U 17-slot Managed chassis.

Specifications

Performance Data Technical Indexes
Equipment function 3R Repeater
Protocols Multiple functions in one module:
–40G converter/repeater
–Quad 10G optical multiplexer
40G link interface
–Ethernet/IEEE: 802.3ba 40GE-LR4 /SR4
10G interfaces:
–9.95 – 11.35 Gbps
Access Type 40G Ethernet/td>
Interface Type QSFP To/From QSFP
Transmission Distance Up to QSFP module ( Max 10Km )
Maximum Packet Forwarding Rate 14,880,950/S
Network management information: • Card type information
• QSFP fiber module DMI function ( Temperature , Voltage , Optical power)
• Link status detector
• Enable/Disabled Loopback test function
• Enable/Disable PRBS Generator and checker function
power requirement Rack-mountable: AC 85 ~ 220V OR DC -48V
Standalone: AC 220V OR DC -48V
Power consumption: ≤6W
Work Environment Operating Temp: 0~ 50 ℃
Storage Temp: -10~ 70 ℃
Humidity: 5%~90% ( non-condensing )
Dimension Card: 11.5mm ( W ) × 78mm ( D )
Standalone: 156mm ( W ) × 128mm ( D ) × 32mm (H )