Archive | October 2016

Whether to Choose 40G DAC or AOC Cables

With the top trend for data center and enterprises to move to higher data rate like 40G, relevant products and technologies are developed to back this new speed (e.g. the 40G optical transceivers and cables). However, there are so many options out there on the market. Network users usually don’t know how to make a choice. Take the 40G cables as an example, the most commonly used 40G cables are the 40G direct attached cable (DAC) and active optical cable (AOC). Each has its unique specification and usage. Which would be the most suitable one for connecting signals across the rack in data center? This article will provide you an ideal answer from the aspect of cabling performance, transmission distance and cost.

Brief Overview of DAC and AOC Cables

QSFP DAC cable is a form of high-speed cable with “transceivers” on either end used to connect 40Gbqs switches to routers or servers. QSFP+ DAC cable usually comes in either active or passive versions. They are widely available for short-reach 40G interconnect (within 7 meter). 40G DAC cables transmit 40GbE over short distances of parallel coaxial copper cabling. It uses a special cabling assembly with four lanes of coaxial cabling. Each transmit 10 Gbps for a total data rate of 40 Gbps. QSFP to QSFP and QSFP to SFP+ cable are the two common types of 40G DAC cables. The picture below shows a QSFP to SFP+ DAC breakout cable connected in a switch.

qsfp-to-sfp-dac-cable

AOC cable uses electrical-to-optical conversion on the cable ends to improve speed and distance performance of the cable while mating with electrical interface standard. Compared with DAC cables, its smaller size, longer transmission distance, lower insertion loss and electromagnetic interference immunity make it popular among subscribers. 40G AOC cables (see in the image below) can support longer distance than QSFP+ DAC cables (within 15m).

qsfp-to-sfp-aoc-cable

Comparison Between DAC and AOC Cables

After the brief introduction to the DAC and AOC cables, what to be considered next is the detailed comparison from the expects of cost, distance and cabling performance. The following chart shows a vivid comparison between them.

comparison-between-dac-and-aoc-cables

Cost

Cost is typically the No.1 factor affecting your selection. When it comes to 40G DAC cables, it is the same, although it’s quite clear that copper is much cheaper than optical cable. AOC, with connectors embedded with electronics and/or optics is the most expensive one. But it supports the highest transmission distance, many data centers won’t choose it because of the high cost.

While passive copper cable is much cheaper than AOC. However, the truth is that it cannot support 40G transmission in most cases in data center. Active copper cable is less expensive than AOC and can support longer transmission than passive copper cable seems to be a good choice. In this battle over cost, passive copper cable wins. But it is not suggested for 40G transmission in most cases.

Power Consumption

The main reason why DAC active copper cable and AOC can support longer transmission distance than passive cooper cable is that they are supported with active electronics. Passive copper cable requires no power. For 40G transmission, the power required for active copper cable is about 440mW, which is much less than that of AOC—2W. Thus, passive copper cable wins for its low power consumption.

Cooling System

Cooling is always crucial for data center, as it is closely related to the data center reliability and life of use. During DAC cable selection, two main factors can affect the cooling of data center. One is cable size. the other is the power consumption of direct attached cable. For the former factor, the thinner the cable is, the better dispersion devices in data center would have. AOC cable is the thinner than DAC cables. And DAC active copper cable is also thinner than passive cooper cable. The relation between power consumption and data center cooling is easy to understand. Higher power consumption can generate more heat in data center, which will load more burden on the data center cooling system. As mentioned before. AOC cable needs the highest power and DAC passive copper cable needs the lowest.

Transmission Distance

In the past, when the data rate required is less than 5 Gbps, the passive copper cables are used for interconnection. This type of DAC connects two SFP connectors by a copper cable, providing direct connection between cable ends via copper wire. Thus they are not expensive and robust with reliability. As it is passive, they need no power generally. However, when it comes to 40Gbps, they cannot satisfy such data rate in most cases. The passive copper cable with QSFP connectors attached on both ends can only support transmission 40 Gbps over very short distance. Thus passive copper cable is not suggested for regular 40G interconnection, unless 40G transmission is in very short distance.

Then AOC cable is introduced to overcome this challenge. Optical cables are thinner, flexible and can reach much longer distance up to 100 meters or more, which is much longer than that of the passive copper cable. However, AOCs are usually very expensive with the connectors attached on the active optical cable are embedded with optics and/or electronics. The connectors of the DAC active copper cable are embedded with electronics. Although they cannot support transmission distance as long as AOC, active copper cable can support longer transmission distance than that of the passive copper cable via copper wire. 40G transmission distance of active copper cable is about 15 meters.

To sum up, if you have a special requirement of the transmission distance. Then active optical cable wins with a transmission distance up to 100 meters. The active copper cable got the second place. And passive copper cable is at the last place. It is only suggested for 40G transmission over really short distance.

Conclusion

After comparing the performance of the DAC and AOC cables, we understand that the DAC passive copper cable is only suitable for really short-reach applications. While AOC cable possesses the best transmission performance but with higher cost in both material and daily use, and it needs more power as well. As for the DAC active copper cable, it can can support 40G transmission up to 15 meters with low power consumption, and satisfy the regular interconnection requirement for distance and cooling in most data center. What’s more, it is less expensive. FS.COM offers a full range of 40G QSFP cables including 40G DAC cable and AOC cables. Besides, the QSFP transceivers are also provided.

Guide to Several Materials in Fiber Optic Cable Construction

Fiber optic cable is considered as one of the most effective transmission medium today for safe, and long-reach communications, and it also offers a number of advantages over copper. In general, fiber optic cable consists of a core, cladding, coating, strengthening fibers, and a cable jacket, which has been clearly introduced in the previous article. Today’s article will focus on the several materials in fiber optic cable construction, as well as their features and applications.

PVC (Polyvinyl Chloride)

Polyvinyl Chloride (PVC) is one of the most commonly used thermoplastic polymers in the world. The PVC cable is typically used for patch connections in the data center, wiring closet, and at the desktop. PVC is produced in two general forms, first as a rigid or unplasticized polymer (RPVC or uPVC). The following image shows a ST single-mode pre-Terminated cable (0.9mm PVC Jacket).

2m-upc-singlemode-48-fiber-multi-fiber-pre-terminated-cable-0-9mm-pvc-jacket

Features:

  • Good resistance to environmental effects. Some formulations are rated for -55 to +55.
  • Good flame retardant properties. Can be used for both outdoor and indoor fiber optic cables.
  • PVC is less flexible than PE (Polyethylene).

PE (Polyethylene)

Polyethylene is a kind of polymer that commonly categorized into one of several major compounds of which the most common include LDPE, LLDPE, HDPE, and Ultrahigh Molecular Weight Polypropylene. Polyethylene fiber has a round cross section and has a smooth surface. Fibers made from low molecular weight polyethylene have a grease like handle.

Features:

  • Popular cable jacket material for outdoor fiber cables
  • Very good moisture and weather resistance properties
  • Very good insulator
  • Can be very stiff in colder temperatures
  • If treated with proper chemicals, PE can be flame retardant.

Kevlar (Aramid Yarn)

The word Aramid is a generic term for a manufactured fiber in which the fiber forming substance is a long chain synthetic polyamide in which at least 85% of the amide linkages are attached directly to the two aromatic rings as defined by the U.S. federal trade commission. Kevlar fiber is based on poly (P-phenylene terephthalamide). Aramid yarn is the yellow fiber type material found inside cable jacket surrounding the fibers. It can also be used as central strength members.

Features:

  • Aramid yarn is very strong and is used in bundle to protect the fibers.
  • Kevlar is a brand of aramid yarn. Kevlar is often used as the central strength member on fiber cables which must withstand high pulling tension during installation.
  • When Kevlar is placed surrounding the entire cable interior, it provides additional protection for the fibers from the environment.

Steel Armor

The steel armored fiber cable, using light-steel tube, can provide maximum bend radius, strong protection and flexible cabling. Steel armor jacket is often used on direct burial outdoor cables and it provides excellent crush resistance and is truly rodent-proof. Since steel is a conductor, steel armored cables have to be properly grounded and loss fiber optic cable’s dielectric advantage. Armored fiber optic cable are often used in the outdoor direct burial cables and for the industrial environment where cables are installed without conduits or cable tray protection. The following image shows a single-mode armored fiber optic cable.

1m-lc-upc-to-lc-upc-duplex-3-0mm-pvcofnr-smf-armored-fiber-patch-cable

Various types of these light-steel armored fiber cables are in stock in FS.COM, including pre-terminated armored fiber patch cables, armored fiber trunk cables and field-terminated armored fiber cables for both indoor and outdoor applications.

Features:

  • Provides excellent crush resistance for outdoor direct burial cables
  • Protects cables from rodent biting
  • Decreases water ingress into the fiber which prolongs the fiber cable’s life expectancy

Central Strength Member

Strength member is used to increase the tensile force that will be applied on the cable during installation. Strength member will take the pulling force and will keep the fibers safe during installation. For large fiber count cables, a central strength member is often used.

The central strength member provides strength and support to the cable. During fiber optic cable installation, pulling eyes should always be attached to the central strength member and never to the fibers. On fiber splice enclosure and patch panel installations, the cable central strength member should be attached to the strength member anchor on the enclosure or patch panel.

Conclusion

When you choose to use which type of the fiber optic cables, the fiber optic cable construction, along with the mechanical and environment requirements should all be taken into account. All the above materials in the fiber optic cable construction are specifically required to meet the network infrastructure. FS.COM fiber optic cables come in various types with detailed specifications displayed for your convenient. These quality cables are designed with best-in-class performance. For more information about fiber optic cables or patch cords, you can visit fs.com.

Pre-terminated Trunk Cable and MTP Cassette Overview

Per-terminated cabling is a popular type of termination method that has been used by the overall network designers. It provides an plug-and-play solution for links between switches, servers, patch panels, and zone distribution areas in the data center. Compared to the Fusion splicing, pre-terminated cabling is apparently more suitable to meet the high-bandwidth, high-density network needs. An article entitled “Understanding Pre-Terminated Cabling and Network Deployment” offers some detailed information about the pre-terminated cabling and its advantages. This article will go further to talk about the elements of the pre-terminated cabling including the pre-terminated trunk cables, and plug and play cassettes.

Pre-terminated Trunk Cables

Pre-terminated trunking cable assemblies provide an easily installed and cost effective alternative to individual field-terminated channels. There are basically pre-terminated fiber cabling and pre-terminated copper cabling, which will be ntroduced in the following part.

  • Pre-terminated MTP/MPO Trunk Cables

Pre-terminated trunk cable usually terminated with MTP/MPO connectors on both ends that provides a quick-to-deploy, scalable solution that improves reliability and reduces installation time and cost. They are capable of supporting multiple users or devices from one point to another while distributing multiple data channels, which is a convenient and economical alternative to running multiple jumpers or fiber cables. Generally 12-fiber MTP/MPO trunk cables and 24-fiber MTP/MPO trunk cables are commonly used separately for 40G applications and 100G applications. The following picture is a 72-fiber female to female MTP trunk cable.

72-fiber-mtp-trunk-cable

There are also high fiber count MTP/MPO trunk cables which have several legs on both ends. The following picture shows a 72-fiber MTP/MPO trunk cable. There are 6 legs on both ends with each leg terminated with a 12-fiber MTP/MPO connectors.

  • Pre-terminated Copper Trunk Cables

Pre-terminated copper cable assemblies including pre-terminated copper trunks and copper patch cords (usually terminated with RJ45 connector), are ideal solutions for data center applications where requires high-efficient deployment. Pre-terminated copper trunk cables are commonly used in point-to-point connections in data centers, such as achieving reliable connectivity between server and switch cabinets. It is a bundle of category cables, built with a choice of 6, 12, or 24 cable bundle and factory terminated with jacks and plugs. The following image shows a jach-to-jack pre-terminated copper trunk cable.

jack-to-jack-pre-terminated-copper-trunk-cables

With factory pre-terminated and tested parts, the pre-terminated copper cable assemblies can help users save time and reduce waste. In addition, they allow fast and easy installation with reduced labor costs in large copper infrastructures with high-density cross-connection and patching systems. FS.COM’s pre-terminated copper cable assemblies are pre-bundled and pre-labeled styles, available in Cat 5e, Cat 6 and Cat 6a UTP and STP cable constructions in jack to jack, plug to plug and jack to plug termination ends.

Pre-terminated MTP Cassette—No Work, No Tools, No Mess

MTP cassettes are used to break out the 12-fiber MTP connectors terminated on trunk cables into simplex or duplex-style connectors. Simplex and duplex style jumpers can then be used to patch into transceiver terminal equipment ports, patch panels or client ports. The cassette features simplex or duplex port adapters across the front and one or two MTP connector adapters across the back. A factory-installed and tested optical fiber assembly inside the module connects the front adapters to the back MTP connector adapter. Alignment pins are pre-installed in the MTP connector located inside the cassette. The below image shows the 12-fiber and 24-fiber MTP cassette.

mtp-cassettes

Using MTP cassettes provides adaptability for the changing data center environment. Facing technology refresh frequencies of 12-18 months, Plug & Play MTP cassettes used in the data center offer a great advantage. When connector requirements change in the future, simply swap the cassettes whilst leaving the existing backbone infrastructure intact. 12-fiber MTP to LC and 24-fiber MTP to LC cassettes provide a quick and efficient way to deploy up to 12 LC or 24 LC fiber ports in a single module respectively. MTP to LC cassettes are a quick and efficient way of deploying MTP connector breakout. These cassettes provide significant installation savings with no field terminations required. Simply plug-and-play!

Conclusion

Pre-terminated cabling is the perfect solution to achieve simple and quick installation. Additionally, the transmission testing of pre-terminated cable assemblies is performed by the manufacturer before shipment, and test reports are included with the assemblies. FS.COM offers a full range of high-quality but low-price pre-terminated cable assemblies.  Besides that, we also offer Fiber Taps, J-Hook, Fiber Optic Enclosures, Cable Ties, Fiber Optic Wall Plates, etc. And all of them are tested before shipment. If you have any requirement, please send your request to us.

100G Direct and Breakout Cabling Solutions

With the emerging high-speed network standards and rapidly advancing technology, fiber optic network is driven to meet the growing demand for faster access to larger volumes of data. Although 10G/40G Ethernet becomes the mainstream of telecommunication market nowadays, organizations of all sizes still need to be prepared to integrate speeds of 100G and beyond. For data center networking, users can choose different solutions based on the different transmission distance need. In general, there are two kinds of 100G fiber optic solutions: direct cabling and breakout cabling. It is essential for users to understand the detailed information of each type of solution in order to select the one that meets their current and future connectivity needs.

How 100G Optics Develop

After the IEEE completing the certification of the first 100G standard for Ethernet networks, the transceiver industry launched a new type of form factors for 100G connectivity—CFP (“C” for 100, and FP for Form factor Pluggable). Compared to the most popular 40G QSFP, the size of CFP transceiver is huge. And most CFP implementations doubled the power consumption per bit. Furthermore, the price per bit increased by a factor of ten. These disadvantages becomes the main obstacles of the popularity of 100G CFP transceivers.

The next version of 100G form factors is the CFP2, CFP4, and the CPAK that are improved upon the CFP. But when compared to the popular 10G SFP+ and 40G QSFP+, none of these new members of the CFP family improved density, power consumption, or cost. Fugure 1 shows the size comparison between CFP2, CFP4 and QSFP28 modules.

100g-transceivers

Then here came the 100G QSFP28. The QSFP28 is the exact same footprint as the 40G QSFP+. The 100G QSFP28 is implemented with four 25-Gbps lanes, Just as the 40G QSFP+ is implemented using four 10-Gbps lanes. In all QSFP versions, both the electrical lanes and the optical lanes operate at the same speed, eliminating the costly gearbox found in CFP, CFP2, and the CPAK. The 100G QSFP28 makes it as easy to deploy 100G networks as 10G networks. When compared to any of the other alternatives, 100G QSFP28 increases density and decreases power and price per bit. That’s why it is fast becoming the universal data center form factor. The following part will move on to talk about the 100G optic cabling solutions.

100G Direct Cabling Solutions

QSFP28 transceiver utilizes either fiber or copper media to achieve 100GbE communication in each direction. This transceiver has 4 individual 25GbE lanes which can be used together to achieve 100GbE throughput or separately as 4 individual 25GbE connections (using 4 SFP28 modules).

For 100G short-reach direct cabling within 100m, 100GBASE-SR4 QSFP28 optical module and 100G QSFP28 cable are good choice. Just from the table list of FS.COM 100G optical modules and cables, we know that 100GBASE-SR4 QSFP28 modules can support up to 100 m on OM4 12 fiber multimode MTP cable. And 100G QSFP28 to QSFP28 direct attach copper cable can support up to 5m and 100G QSFP28 to QSFP28 active optical cable can support up to 10m. Figure 2 describes a 100G direct cabling with the use of QSFP28 to QSFP28 DAC and AOC cables.

100g-qsfp28-solution

For 100G long-haul direct cabling, like 10km, both 100GBASE-LR4 QSFP28 optical module and 100GBASE-LR4 CFP4 transceiver can support up to 10km on single-mode LC patch cables. For longer 100G direct cabling above 10km, the 100GBASE-ER4 CFP is the ideal choice as their transmission distances support up to 40 km.

100G Breakout Cabling Solutions

A breakout cable is a multi-strand cable, typically custom-made, which is divided into multiple duplex cables. For instance, a 40G breakout cable has four individual 10G duplex cables totaling eight strands, while a 100G breakout cable has 10 duplex cables and 20 strands. Figure 3 displays a simple 100G connectivity with 100GBASE-SR4 QSFP28 and QSFP28 to 4SFP28 breakout cables.

gsfp28-to-4sfp28-cable

Between the 100G optical module and 25G optical modules, there always uses the breakout cables connected the two kinds of optical modules, and the common cable solutions are 100G QSFP28 to 4SFP28 Breakout AOC cables or 100G QSFP28 to 4x 25G SFP28 Breakout Direct Attach Passive Copper Cables.

The commonly used 100G breakout cabling solutions is 100G QSFP28 to 4SFP28 DAC. It’s easy to understand how this type of cable function. Just as the QSFP+ breakout cable, the 40GBASE-SR4 QSFP+ optical module at the one end can be connected to 4x10GBASE-SR SFP+ optical modules at the other end.

Conclusion

As IT infrastructures are planning to migrate to 100G data rate, network designers must carefully weigh alternative implementations of such links. With a variety of fibers already deployed, it is important to understand the interoperability of new optics with existing fibers. And for 100G deployment, you are supposed to understand the benefits and challenges of each type of the fiber optic solutions before taking an action. FS.COM’s 100G FHD series covers a full range of 100G optical transceivers and cables, like CFP, CFP2, CFP4, QSFP28, as well as 100G QSFP28 to QSFP28 DAC, 100G QSFP28 to 4SFP28 DAC. Besides the above products, 100G FHD Fiber Enclosures, 100G FHD MTP Modular Cassettes, 100G 160 Fiber 2U Panels and 100G CFP SR10 Cables are also provided. If you want to know more about our products, please contact us directly.

Cost Comparison: Fusion Splicing Versus Pre-terminated System

Fiber optic joints or termination is a necessary process when installing a network. Every network operators who aim to deploy a next-generation fiber network have to determine how to build a flexible, reliable and long-lasting infrastructure at the lowest possible cost. In general, there are mainly two fiber optic termination methods: splices which create a permanent joint between the two fibers, or connectors that mate two fibers to create a temporary joint. When people decide to use either method, many factors should be taken into account. Today’s article will evaluate both methods from the aspect of cost to help you choose the effective termination method.

Weighting the Two Methods

Besides the features of low loss, minimal reflectance and high mechanical strength, fiber optic termination must be compatible to the environment in which they are installed. Before we come to the cost comparison of these two termination methods, let’s firstly have a brief overview.

Fusion splicing

As it known to all that, splices create a permanent joint between two fibers, so its use is limited to place where cables are not expected to be available for servicing in the future. The most common application for splicing is joining cables in long outside plant cable runs where the length of the run requires more than one cable. There are two types of splices, fusion and mechanical. Fusion splicing is most widely used as it provides for the lowest loss and least reflectance, as well as providing the strongest and most reliable joint.

fusion-splicing

Fusion splicing machines are usually called fusion splicer available on the market that splice a single fiber or a ribbon of 12 fibers at one time. The above picture shows how to splice a fiber optic jumper. Virtually all single-mode splices are fusion. Fusion splices are made by “welding” the two fibers together usually by an electric arc. To be safe, you should not do that in an enclosed space like a manhole or an explosive atmosphere, and the equipment is too bulky for most aerial applications, so fusion splicing is usually done above ground in a truck or trailer set up for the purpose.

Today’s single-mode fusion splicers are automated and you have a hard time making a bad splice as long as you cleave the fiber properly. Fusion splicers cost thousands US dollars (up to $5,000), but the splices only cost a few dollars each. The following part display the main features of the fusion splicing:

  • Typical average optical losses of 0.05dB or lower
  • Not de-mateable
  • Special installation skills needed
  • Tools sensitive to the environment
  • Relatively long installation time
  • Standard organizer techniques required

Pre-terminated System

Pre-termination is the alternative termination method popular on the market. Cables and fibers are terminated to a connector in the factory. When carefully planned, splicing jobs for specialized technicians can be limited to the network construction phase. But provisioning, churn and network testing can be performed by technicians without specific fiber skills, because the organizers can be very simple.

With pre-connectorized products, the connection time is reduced from 20 to less than 5 minutes, including the connector cleaning step. When connecting fibers with connector technology, there is no issue of environmental sensitivity. What’s more, connectors are accessible on the outside of the network element, reducing the need to access a product and the risk of disturbing other lines. The image below shows the MPO pre-terminated cables.

mpo-per-terminated-system

Factory pre-termination is also compatible with optical budget requirements by selecting the appropriate grade as defined by the international IEC standards. When properly planned, pre-connectorized
products do not add extra connectivity points, thus eliminating extra optical loss or reflections. In all, the most obvious features of the pre-terminated system lies in the following part:

  • Typical losses of 0.15dB or less
  • Fully de-mateable
  • No special installation skills required
  • Reduced installation time
  • Very simple organizer systems
  • Insensitive to environmental conditions

Cost Comparison

The start-up costs for the fusion splice are significantly higher, as fusion splicers can be very expensive. Even the cheapest fusion splicer will cost nearly $2,900 (FS-F600 Fusion Splicer from FS.COM) more than the most expensive crimp kit. Not counting the initial start-up costs, splices will run anywhere from $7.20 to $8.25 per splice, which is much lower than the pre-terminated connector. The following image shows the vivid comparison between fusion splicing and pre-terminated system.

pre-terminated-vs-fusion-splicing

As for the pre-terminated connector, the most significant advantage is the wire management hardware involved. A pre-terminated connector requires no additional hardware over a standard connector. And it is faster to terminate a crimp connector, saving labor time ($0.75 per splice), and splicing also requires additional material costs in the form of splice protectors ($0.40 per splice). Fiber splicing technicians have specialized training that makes them expensive when compared to someone simply plugging things in. The additional material and closet space for managing splices can cost an additional $6.05-7.10 per connector. But with a little careful planning as to lengths of fibers needed, pre-terminated fibers can be installed quickly and with no training.

In all, fusion splicing makes a lot of sense for trunk fibers and locations where there are anywhere from 48 to 192 fibers to splice. In the drop locations, where there may be only one or two splices at each location, the setup time for each location may negate any cost savings from fusion splicing.

Making the Choice

In comparing pre-termination and fusion splicing, both have their inhered advantages. Fusion splicers offer many advantages in the premises environment, from being lightweight and compact to operating on a battery. These new units minimize setup time and are ideal for use in locations where space is tight. In addition, the total splice and heater cycle time is less than one minute, thereby enabling technicians to move through many termination locations quickly.

However, we cannot deny the fact that the start up cost of the fusion splicing is huge, thus customers that can’t deal with budget are going to demand pre-terminated connectors. Pre-terminated solutions offer the most benefits: It’s easy to install pret-terminated cables, and because they’re available in custom lengths, it’s easy to get the exact lengths required to limit the excess slack. Many more users will rely on the pre-terminated trunk cables and sacrifice the inconvenience of dealing with slack, because it offers faster deployment.

As you get into significantly higher fiber counts, fusion splicing could save time over installing connectors. While for those who don’t have a fusion splicer or splicing experience, may want to consider pre-terminated connectors. FS.COM offers both fusion splicer and per-terminated cables, our products are integrated, holistic physical infrastructure solutions that guarantee a reliable and stable performance for your network. Please contact us if you need help.

How to Create More Capacity in Data Center

With the ever-increasing demand for more computing power and data center servers, data center manager have the responsibility to chart a data center capacity plan and determine what strategy will accommodate business needs best. Of course, they could just expand to large facilities (upgrading to the advanced switch and fiber enclosures). However, not all IT budgets are increasing, and many users just cannot afford the extra money. Therefore, people are turning to high-density and cost-effective infrastructures. To support these applications, this article will introduce a broad selection of high-density connectivity and high capacity cable management devices.

  • High-Density Patch Panels

High-Density (HD) fiber patch panel solution is the most convenient approach for solving the problem of limited capacity in a data center environment. And it provides a flexible way to connect devices of different generations of equipment quickly and easily. HD patch panels consist of a panel enclosure and modular HD cassettes, which can connect a fiber network feed (via multi-strand or MTP cable) and segment it into standard LC connections in order to interface with 10Gbps devices. The following image shows a fiber adapter panel with 12 LC duplex single-mode adapters.

fiber-adapter-panel-with-12-lc-duplex-os2-singlemode-adapters

HD fiber patch panels feature the following advantages:
Flexibility: They can connect different generations of equipment such as 10Gb, 40Gb, 100Gb in a simple panel-cassette system with different connector types.

Ease of Installation: No tools are required to install the cassette in the panel enclosure. Each cassette features factory terminated connectors that reduce the time and labor required of field connector terminations.

Cost-Effectiveness: High-density and ease of installation provide a low initial investment cost. Flexibility, adjustability and reliability provide a high ROI. What’s more, network reconfiguration is highly adjustable due to the modular cassette system.

  • High-Density Patch Cords

As cabling density increases along with the deployment of higher network speeds, HD patch cords deliver a robust design to withstand the rigorous of daily use. Cables that can offer a smaller overall diameter improve cable management by installing in dense patch cord trays that take up less space. They also provide better airflow to maintain consistent operating temperatures, reducing the likelihood of failure or downtime.

finger-access-for-high-density-cabling

Finger access to each patch cable, furthermore hinder the cable management and makes the cable installation become more difficult. To ensure easy access, high-density patch cords are easy to remove through the use of a flexible pull-tab fiber optic cable just as seen in the above picture. This cable type has the same component and internal structure as the traditional patch cords (e.g.SC FC patch cord), except the a tab attached to the connector, which makes it easy for cable management. These tabs can help increase cabling density and maintain reliability, preventing you from accidentally loosening surrounding connectors as you access the patch cord you need.

MPO/MTP trunk cable is the another example of the HD patch cords. These cables are the foundation of easier, faster and better pre-terminated fiber connectivity solutions, as it allows tighter trunk cable bends for slack storage and routing. With the high-density trunks in your data center solution, less space is consumed and installation is easier.

  • High-Density Fiber Enclosures

Fiber enclosure makes full used of the spaces in data center by combining most of the fiber optic connections in strong standards modules, providing solid protection of data center links and increasing cabling density. Therefore, data center managers can get easy access to fiber connections and easy cable management. Accordingly, the cost for data center installation and maintenance can be effectively reduced.

fiber-enclosure

Fiber enclosures are usually available in 1U, 2U, 3U, 4U. The 1U rack mount fiber enclosure is the most commonly used one on the market. Now 4U or larger rack mount fiber enclosures are also becoming popular driven by the increasing of fiber counts in data center. Except standards rack mount fiber enclosures, a lot of data centers or server rooms use customized fiber enclosures for their special requirements.

FS.COM FHD Series rack mount fiber enclosures are available in 1RU, 2RU and 4RU rack unit options. With optional FHD cassette modules or adapter panels in single-mode, multimode, or 10G multimode versions, users can install, maintain, and upgrade their cabling systems in a more flexible and cost-effective way. In addition to rack mount solution, our FHD series products also support wall mount type which can meet the cabling demands on fiber industrial environments.

Conclusion

High-density optic solutions enable data center operators to maximize the amount of active equipment and cables in a data center by minimizing the foot print of the networking infrastructure. Besides the above HD optical products, there are also a range of HD products including the high speed interconnect optics, cable assemblies, cable management hardware. If you want to know more about the HD products from FS.COM, please have a look at our website.