Fiber Optics Solutions

petak, 27.03.2015.

SFP Module Removal and Installation Tutorial

Be Aware of Before Installing or Removing A Transceiver module


Before removing or installing a SFP Transceiver Module you must disconnect all cables, because of leaving these attached will damage the cables, connectors, and the optical interfaces. At the same time please be aware that do not often remove and install an SFP transceiver and it can shorten its useful life. For this reason transceivers should not be removed or inserted more often than is required.


Furthermore, transceiver modules are sensitive to static, so always ensure that you use an ESD wrist strap or comparable grounding device during both installation and removal.


Required Tools


You will need these tools to install the SFP transceiver module:


1. Wrist strap or other personal grounding device to prevent ESD occurrences.


2. Antistatic mat or antistatic foam to set the transceiver on.


3. Fiber-optic end-face cleaning tools and inspection equipment.


Complete These Steps in Order to Install A SFP Transceiver


1. Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.


2. Remove the SFP Transceiver Module from its protective packaging.
Note: Do not remove the optical bore dust plugs until directed to do so later in the procedure.


3. Check the label on the SFP transceiver body to verify that you have the correct model for your network.


4. Find the send (TX) and receive (RX) markings that identify the top side of the SFP transceiver.
Note: On some SFP transceivers, the TX and RX marking might be replaced by arrowheads that point from the SFP transceiver connector (transmit direction or TX) and toward the connector (receive direction or RX).


5. Position the SFP transceiver in front of the socket opening.
Note: Different Cisco devices have different SFP module socket configurations. Your Cisco device could have either a latch-up or a latch-down orientation. Ensure that you are installing the SFP transceiver in the correct orientation for your Cisco device. Refer to the hardware installation instructions that came with your Cisco device for more details.


6. Insert the SFP transceiver into the socket until you feel the SFP Transceiver Module connector snap into place in the socket connector.



Note: For optical SFP transceivers, before you remove the dust plugs and make any optical connections, observe these guidelines:

Insert the SFP transceiverAlways keep the protective dust plugs on the unplugged fiber-optic cable connectors and the transceiver optical bores until you are ready to make a connection. Always inspect and clean the LC connector end-faces just before you make any connections. See the Required Tools section of this document for more information. Always grasp the LC connector housing to plug or unplug a fiber-optic cable.



7. Remove the dust plugs from the network interface cable LC connectors. Save the dust plugs for future use.


8. Remove the dust plugs from the SFP transceiver optical bores.


9. Immediately attach the network interface cable LC connector to the SFP transceiver.


10. Connect the 1000BASE-T SFP transceivers to a copper network.


Caution: In order to comply with GR-1089 intrabuilding lightning immunity requirements, you must use grounded, shielded, twisted-pair Category 5 cabling.


Complete These Steps in Order to Connect the Transceivers to A Copper Network:


A Copper SFP transceiver (1000BASE-T SFP) is shown in following Figure:


Cisco compatible copper SFP


a. Insert the Category 5 network cable RJ-45 connector into the SFP transceiver RJ-45 connector.



Note:When you connect to a 1000BASE-T-compatible server, workstation, or router, use four twisted-pair, straight-through Category 5 cabling for the SFP transceiver port. When you connect to a 1000BASE-T-compatible switch or repeater, use four twisted-pair, crossover Category 5 cabling.



b. Insert the other end of the network cable into an RJ-45 connector on a 1000BASE-T-compatible target device.


11. Observe the port status LED:



Complete These Steps in Order to Remove SFP Transceiver


1. Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.


2. Disconnect the network fiber-optic cable or network copper cable from the SFP Transceiver Module connector.


3. For optical SFP transceivers, immediately reinstall the dust plugs in the SFP transceiver optical bores and the fiber-optic cable LC connectors.



Tips: For reattachment of fiber-optic cables, note which connector plug is send (TX) and which is receive (RX).



Release and Remove the SFP Transceiver Module from the Cocket Connector.


If the SFP transceiver has a Mylar tab latch, pull the tab gently in a slightly downward direction until the transceiver disengages from the socket connector, and then pull the SFP transceiver straight out. Do not twist or pull the Mylar tab because you could detach it from the SFP transceiver.


SFP


If the SFP transceiver has an Actuator button latch, gently press the actuator button on the front of the SFP transceiver until it clicks and the latch mechanism releases the SFP transceiver from the socket connector. Grasp the actuator button between your thumb and index finger, and carefully pull the SFP transceiver straight from the module slot.



If the SFP transceiver has a Bale-clasp latch, pull the bale out and down to eject the SFP transceiver from the socket connector. If the bale-clasp latch is obstructed and you cannot use your index finger to open it, use a small flat-blade screwdriver or another long narrow instrument to open the bale-clasp latch. Grasp the SFP transceiver between your thumb and index finger, and carefully remove it from the socket.



Fiberstore is a professional OEM manufacturer and supplier of optical networking solutions. Fiberstore provides a full set of comaptible fiber optic transceiver module solution cover all the famous brands, such as Cisco, HP, Finisar and so on. Especially, you can find a full product line of our New Cisco SFP modules, such as GLC-LX-SM-RGD, SFP-GE-T, GLC-SX-MMD, etc. For more Tutorials about Optical Transceivers please visit: Fiberstore Optical Transceiver Tutorials.


Oznake: SFP module, 1000base-t sfp

27.03.2015. u 09:07 • 0 Komentara • Print • #

srijeda, 25.03.2015.

HP X121 1G SFP LC Transceivers Overview

HP X121 1G SFP LC Transceiver Models



HP 1G SFP Transceiver


HP X121 1G SFP LC SX Transceiver (J4858C)


HP J4858C - 1000BASE SX transceiver that provides a full-duplex Gigabit solution up to 550 m on multimode fiber.



HP X121 1G SFP LC LX Transceiver (J4859C)


HP J4859C - 1000BASE SFP LC LX Transceiver: An SFP format gigabit transceiver with LC connectors using LX technology.



HP X121 1G SFP LC LH Transceiver (J4860C)


HP J4860C - Gigabit LH transceiver that provides a full-duplex Gigabit solution up to 70 km on single-mode fiber.



OEM Manufacturer


HP SFP transceivers offered by Fiberstore are third-party optical modules certified fully compatible with HP Switches & Routers. The HP SFP modules can be mixed and deployed with HP OEM SFP transceivers for seamless network performance and interoperability. Fiberstore provides HP compatible SFP transceivers which can be equivalent to HP JD118B, HP JD092B, HP JD089B, HP J9143B, HP J8177C, etc.


Oznake: HP SFP, J4859C, J4858C, JD118B

25.03.2015. u 08:39 • 0 Komentara • Print • #

ponedjeljak, 23.03.2015.

10GBASE-T vs SFP+ DAC

Eight years ago, the networking industry was gearing up for massive uptake of copper-based 10 Gigabit Ethernet (GbE) using 10GBase-T. As a result, we are seeing the expansion of higher speed Ethernet solutions, specifically 10 and 40 gigabit Ethernet.


In particular to 10 gigabit Ethernet (10GbE), which is booming with new applications accentuating the differences between Ethernet adapter designs, copper is back on the 10GbE menu. Only now the copper option is in a newer format called SFP+ Direct Attach Cable, which uses twin-axial copper cable and plugs into the SFP+ receptacles also used for fibre optics.


These questions were asked by network switch users. Maybe you have the same question. What's the main difference when you choose the 10GBASE-T or SFP+ DAC?


10GBase - T


10GBase - T – IEEE standard 802.3an - 2006 for operation at 10 gigabits per second over Cat 5/6/7 twisted pair cable at distances up to 100 meter. 10GBase-T works at 100 meters for Cat6A or Cat7 cable, and up to 50 meters for Cat6, Cat 5E, or even Cat 5 cable.


In the early days of Ethernet there were several PHY standards, including various forms of coaxial cable, but Ethernet only gained widespread adoption once it was run on twisted pair cable, and as point - to - point rather than an unstructured loop. It became practical to run an Ethernet cable to each desktop alongside the phone cable, and make all the connections in a wire closet. The connector used for twisted pair was the RJ45 connector.


Many IT managers are now evaluating the newly refreshed 10GBase-T technology, as the perception is that 10GBase-T is cheaper and easier to deploy than the alternative SFP+ technologies.


SFP+ DAC


Instead of installing
an optical transceiver at each end plus a length
of fiber optic cable
, a cable was invented with
each end physically resembling an SFP+
transceiver, but with none of the expensive
electronic components. A small component is
required to identify cable type to the SFP+ host,
but its cost is negligible. This innovation, call
ed
either Direct Attach Cable (DAC cable) or twinax, is a
low cost solution for shorter distances, while
keeping the high
-
density equivalent to RJ45
connectors.


The following table compares these two technologies:


10GBASE-T vs SFP+


Two microseconds may not seem high at first; however, if we imagine a TOR infrastructure where traffic is passing 4 hops to reach the destination, as much as 10.4usec delay is introduced when using 10GBase-T. This is a significant performance penalty compared to using 1.2usec introduced by the SFP+ DAC technology.


Cabling Latency


The 10GBase-T delay becomes the same order of magnitude as Solid State Disk latency, and therefore dramatically delays data delivery by nearly 50 percent.  High latencies in the data center infrastructure results in delays in CPU and application works, therefore limiting data center efficiency and increasing operational costs.


10GBase - T advantages:



SFP+ with DAC advantages:



For data centers, the advantages of SFP+ with DAC are a very good match for today’ s requirements and emerging trends. That’s why SFP+ with DAC is being adopted rapidly as best practice for new data centers. For wiring closets, 10GBase - T will be the obvious choice once the demand for bandwidth becomes more acute and once the price and p ower for 10GBase - T technology comes down.


Fiberstore Meida Options for 10 Gigabit Ethernet


SFP-10G-AOC3MFiberstore is a professional OEM manufacturer and supplier of optical networking solutions. Cisco compatible SFP+ modules provided by Fiberstore give you a wide variety of 10 Gigabit Ethernet connectivity Meida options for data center, enterprise wiring closet, and service provider transport applications, such as Cisco SFP+ Twinax Copper Cables, Cisco SFP+ active optical cables:



Oznake: 10Gbase-T, SFP+ DAC, SFP+ cable

23.03.2015. u 09:40 • 0 Komentara • Print • #

petak, 20.03.2015.

Media Options for 10 Gigabit Ethernet

Despite strong growth in 10GbE deployments, 10GbE has yet to achieve mass market Data Center adoption, due to a number of limitations, primarily around cost, power consumption, and cabling options. The following section outlines several of these limitations in greater detail and discusses how the current generation of 10GBASE-T technologies removes them going forward.


10GBASE-CX4


10GBASE-CX4 was an early favorite for 10 GbE deployments, but its adoption was limited by bulky and expensive cables and limited reach of 15 meters. The large size of the CX4 connector, when compared to other interface options, prohibited higher switch port densities, specifically with 1RU top of rack switches and modular switch chassis. Moreover, pathways and spaces were not sufficient to handle the larger cables.


SFP+ Transceiver


SFP+ TransceiverSFP+'s support for both fiber optic cables and DAC make it a more flexible solution than CX4. SFP+ connectors are smaller than CX4 connectors and offer comparable port densities to their GbE counterparts. SFP+ DAC is the leading 10GbE interface today, but its limitations in reach and cost will prevent this media from becoming the de facto cabling and interface technology for 10GbE.


10GBASE-SR (SFP+ Fiber)


Cabling with Fiber is great for latency and distance (up to 300 meters). Fiber cabling coupled with optical transceivers offers the best power consumption footprint, however it is more expensive than other 10GbE media types; optical transceivers can add up to 30-40% to server, switch, and storage interface costs. The fiber electronics can be four to five times more expensive than their copper counterparts, meaning that ongoing active maintenance, typically based on original equipment purchase price, is also more expensive. This drives up both the acquisition costs as well as the ongoing annual maintenance contracts. Further, the vast majority of SFP+ connections are sold as add-in server adapters, as opposed to 10GBASE-T connections, which are now integrated on server motherboards. This add-in model adds cost and maintenance overhead.


10GBASE-SFP+ DAC


SFP+ cableDAC cable is a copper 10 Gigabit Ethernet cable which comes in either an active or passive Twinax (twinaxial) cable assembly and connects directly into an SFP+ housing. The active Twinax cable has active electronic components in the SFP+ housing to improve the signal quality; the passive Twinax cable is just a straight "wire" and contains no active components. The adoption rate of DAC for LAN on Motherboard (LOM) will be low, since it does not have the flexibility and reach of 10GBASE-T. With top of rack deployments, it is very difficult to use all the switch ports purchased due the generally lower number of server adapter ports and the limited reach of the cables. These unused ports carry an initial cost outlay and require power (even in idle mode) and maintenance costs, making them expensive on an ongoing basis.


10GBASE Meida Options for 10 Gigabit Ethernet


10GBASE-SR (SFP+ Fiber)



10GBASE-SFP+ DAC


Oznake: 10GBASE SR, 10G SFP+, SFP+ DAC

20.03.2015. u 08:17 • 0 Komentara • Print • #

srijeda, 18.03.2015.

Upgrade the Data Center to 10GbE

Introduction


Ethernet technology has continually evolved to meet up with the never-ending demand for faster rates of data transmission. Through this ongoing evolution, it has matured into the foremost technology standard for local area networks (LANs) as newer, higher performing iterations - such as 10 Gigabit Ethernet (10GbE) is more commonplace. The requirement for faster application speeds has also spurred technological evolution on data carrying techniques. As a result, copper and fiber transmission standards have progressed, providing greater bandwidth for transporting data over Ethernet architectures with reduced cost and complexity.


In the past, 10GbE was neither necessary nor affordable. As with most burgeoning technologies, those dynamics are changing. Technological advancements have resulted in higher performance at lower costs. Therefore, gigabit and 10GbE bandwidth has become affordable for most companies. Regardless of cost, there is also a distinct need. A growing quantity of applications require considerable bandwidth to support the transfer and streaming of large data, audio and video files. As bandwidth-intensive applications and latency sensitive traffic types become ubiquitous, so does the need to encourage and transport them.


SFP-10G-SR 10GBASE-SR SFP module


10GbE is a great technology to move large amounts of data quickly. The bandwidth it provides in conjunction with server consolidation is highly advantageous for Web caching, real-time application response, parallel processing and storage.


Upgrading the Data Center to 10 Gigabit Ethernet


There has been a lot of discussion about upgrade the data center Ethernet speeds from 10 Gigabit Ethernet (GbE) to 40/100GbE. While these topical issues are very important when planning for future needs, the truth is that most data center administrators are upgrading Ethernet speeds from 1GbE to 10GbE. The issue they experience when planning this upgrade using high-speed cabling is the extra expense connected with the server connections. We have a solution to avoid this error that will aid keep costs at a minimum.


Today, the predominant data center architecture is use Top-of-Rack switches as the most efficient ways of achieving Fiber Channel over Ethernet (FCoE). Up to now, the best way to connect a 10GbE server and support FCoE is to use a 1/10G switch or fabric extender (FEX) connected with a SFP module or SFP+ direct attached cable (DAC) - the Cisco Cisco Nexus 2348TQ Fabric Extender (FEX) is a good example. This season Cisco introduced the 2348TQ F-FEX that utilizes 1GBASE-T/10GBASE-T ports supported with category 6/6A copper patch cords and supports FCoE.


Consider a comparison of the two FEX options in the Cisco case. When comparing a 1/10GbE 2348TQ fully loaded with SFP cables to support 1G servers and a 1/10GbE 2348TQ fully loaded with cat6 patch cords, the cost is similar. Use the 10GBASE-T SFP or SFP+ cable is actually hundreds of dollars cheaper. This is not typically enough for a data center manager to consider the 10GBASE-T RJ-45 version. However, the real cost comes when migrating the server connections from 1GbE to 10GbE. When migrating from 1G to 10GbE with the 2348TQ DAC, you have to replace the 1GbE SFP direct attached cables. These cables do not support 10G speeds. SFP+ direct attached cables have to be installed to support 10GbE at a cost of $85 to $100 per cable. Multiply this by 32 ports - the cost has just become significant.


Solution


SFP module is a very popular format that's recommended by a large number of fiber optic component providers. Fiberstore is a professional OEM manufacturer and supplier of optical networking solutions. We can supply 100% compatible Cisco SFP transceivers and also offer customized fiber optical transceiver according to your requirements. You can find a full product line of Cisco compatible SFP modules, such as SFP-10G-SR, SFP-10G-LR, SFP-H10GB-CU3M, SFP-10G-AOC3M, etc.

18.03.2015. u 08:37 • 0 Komentara • Print • #

srijeda, 11.03.2015.

The Cost of SFP Transceiver Will Not Be A Problem

transceiver moduleTo many users, there is an inevitable issue that the cost of optical transceivers will keep adding up over time. This is why the demands of 3rd party compatible fiber optic transceivers have emerged in the market. Actually, 3rd party compatible fiber optic transceivers are the direct solution for a tight budgets. However, some issues mayoccur when using 3rd party compatible fiber optic transceiver that drive users to give it up. The worry of the cost of fiber optic transceivers still exists. This paper is going to talk about the fiber transceiver industry and discuss something you should know about the 3rd party compatible fiber optic transceivers.


Fiber Optic Transceiver Industry

When you buy transceivers for your switch, you are told to buy them from your network equipment manufacturer in order to keep your system running properly and safely. However, the switch vendor doesn’t actually manufacture these transceivers. In fact, the fiber interface transceiver manufacturers will supply a variant of their standard transceiver to the switch vendor for resale. The switch vendor will perform testing of that transceiver against their switch, create a compatibility matrix and SKU for that transceiver and start selling the transceiver. They mark up the price of the transceivers to cover their costs (to test/procure/stock etc..) and make a profit. This is why the “brand” transceiver modules are more expensive.


However, as long as the transceiver complies with the required IEEE and MSA standards all it would take is a quick compatibility test and for the vendor could publish a list of all supported transceivers. Thus, 3rd party compatible transceivers are not hard to be realized. In order to corner the market, the switch vendor will request that the transceiver vendor flash the transceivers EEPROM with a vendor specific identifier. The switch operating system will use the I2C bus to query the transceiver EEPROM data, and verify that the transceiver has the correct identifier. If the identifier doesn’t match, then the OS will not power up the laser. The idea is that the switch vendor doesn’t want you to put anything into your router which hasn’t been approved by them. This is why many users will face error warning when using the 3rd transceivers.


How To Solve? – “My 3rd party transceiver does not work on my switch”

So, how to solve this issue and successfully use 3rd party transceivers on your switch? First, you should know the hidden commands of your switch. I believe some of my blog fans may know it as I have explain it some weeks ago in another papers. Yes, the “service unsupported-transceiver” command. Certainly, it is take Cisco for example, but it is easy to find the equivalent commands in other brand switches along the way.


3rd Party Transceivers vs “Brand” Transceivers

User who have experience of buying 3rd party transceivers and “brand” transceivers may know that the the major difference is cost. So, how much difference? Assuming you get an identical transceiver from Cisco and Fiberstore, the list price for an 10G SR SFP+ 850nm from Cisco is $1,495 USD, while Fiberstore’s one just listed at $ 18.00 USD. This difference is incredible, but it is the truth. The truth is that you won’t have to sacrifice any quality or reliability with all of the savings you receive. In contrast, you get everything you’ve come to expect from the 3rd party transceivers at up to 90% off list price. As high-density merchant-silicon based switches become mainstream, the per-port cost of the switch is dropping dramatically. The transceiver costs now become a very large part of the total system cost and, for a 48-port switch the transceiver costs could easily exceed the base cost of the switch. 3rd party transceivers help users to save more on their cost of transceivers, so why not do it?


Of course, 3rd party transceivers are good option for your transceivers solutions. However, at least so far, the market is not fully normalized. Though the prices of 3rd party transceivers are very attractive, but the good and bad are intermingled. If you plan to buy the 3rd party transceivers for your switch, you had better to choose a vendor with high reputation. I recommend Fiberstore for you. Why? You may know the answer after you try.

Oznake: optical transceivers, 10G SR SFP+ 850nm

11.03.2015. u 08:38 • 0 Komentara • Print • #

ponedjeljak, 09.03.2015.

Optical Transceiver on Rise to Aid Fiber Optics

People who have been in this industry awhile might remember the early days of fiber optic transceivers, where, besides specifying the function which was needed (e.g. RS-232 to fiber optic), additionally you have to define number of fibers, connector type, wavelength, and possibly optical budget. Additionally, there might have been the selection of end point, repeater, or multi-port star or hub. All of these things made for a dizzying range of part numbers and complicated the specification, ordering, and stocking of transceiver products. As an example, the Cisco SFP modules (e.g. GLC-SX-MMD, GLC-T, SFP-GE-L) offer a wide variety of Ethernet network connectivity options for data center, enterprise wiring closet, and service provider transport applications.


Cisco GLC-SX-MM


The Gigabit Interface Converter (GBIC) module was prepared in 1999, originally specified for fiber channel applications. It enabled a small module to plug into transmission equipment using Gigabit Ethernet or fiber channel. Soon after, a mini GBIC known as a SFP (small form factor pluggable) transceiver was introduced. The SFP has a bit smaller footprint than the GBIC and is used for data rates up to 10 Gb/s. It has various fiber options, including Dense Wavelength Division Multiplexing (DWDM), data rates, and it has an RJ-45 copper option (). Fiber interfaces can be multi-mode or single mode, implement different fiber optic Ethernet standards (referring to wavelength, distance, and data rate), and support different fiber optic connectors. LC is the most widely used connector interface.


Started in 2000, a variety of industry companies including IBM, Fujikura, Agilent Lucent, Cisco, and Netgear Electronics accepted the Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA) to establish internationally compatible sources of a pluggable fiber optic transceiver module in support of standards for fiber optic systems. Each party expects that the establishment of compatible sources for an interchangeable transceiver module enables the whole fiber optic marketplace to grow more quickly. This enhanced marketplace growth, customer choice, and vigorous competition are the express purposes of this Agreement. The MSA defined both physical and electrical parameters for devices that might plug into single or multiple unit receptacles (cages) and be hot swappable. Some optical SFP transceivers now support digital diagnostics monitoring (DDM) functions, commonly known as digital optical monitoring (DOM), giving users the ability to monitor real-time parameters such as optical output power, optical input power, and temperature.


It is worth reminding about the manufacturer warranty and support. While researching Cisco's policy, you will found this: When a customer reports an item fault or defect and Cisco believes the fault or defect can be traced to the by using third-party memory products, such as GBICs, SFP modules, 10GBASE Twinax cables, filters, and other non-Cisco components by a customer or reseller, then, at Cisco's discretion, Cisco may withhold support under warranty or a Cisco support program.


Although, some on-line postings advise that third-party SFPs might not work out of the box and may have to need a Cisco IOS command such as service unsupported-transceiver to successfully operate, but some OEM manufacturers compatible SFPs is trustworthy. I highly recommend OEM manufacturers they could provide lifetime warranty and custom seivice, such as Fiberstore inc. Fiberstore is a professional manufacturer of fiber optics, they offered fiber optic transceivers are 100% compatible with major brands like Cisco, HP, Juniper, Nortel, Force10, D-link, 3Com.

09.03.2015. u 09:42 • 0 Komentara • Print • #

petak, 06.03.2015.

Worldwide Active Optical Cable Market Forecast

With the advent of the big-data age, the cloud technology has developed rapidly. In order to satisfy the demands of higher bandwidth and more applications in a variety of cloud computing environments, a new type of cable has emerged, such as SFP+ DACs (eg. SFP+ AOC, passive SFP+ cable, active SFP+ cable). Nowadays, the market of AOCs keeps growing and has a broad prospect. Today, Fiberstore blog will introduce the AOCs and discuss its prospect forecast.


What's Active Optical Cable (AOC)?


Active Optical Cable (AOC) is used for short-range multi-lane data communication and interconnect applications. In fact, the wire transmission of optical communication should belong to passive part, however, AOC is special. AOC integrates multimode optical fiber, fiber optic transceivers, control chip and modules. It uses electrical-to-optical conversion on the cable ends to improve speed and distance performance of the cable without sacrificing compatibility with standard electrical interfaces. As people expect more information to be available at their fingertips, our communications systems will need to be quicker, and AOC is one of the best solutions to this challenge. Compared with common cable for data transmission, AOC provides more advantages, such as lighter weight, high performance, low power consumption, low interconnection loss, EMI immunity and flexibility. With its benefits, AOC is widely used in many fields as well as promoting the traditional data center to step into optical interconnection. Now, market of AOCs is booming.


AOC


Development of AOCs


Primarily, active optical cable (AOC) assemblies were invented to replace copper technology in data centers and high performance computing (HPC) applications. As we know, copper cable is heavy and bulky, making it difficult to physically manage the datacenter. And due to the nature of electrical signals, electromagnetic interference (EMI) limits copper’s performance and reliability. Though there are so many disadvantages of copper cable, at that time, it is the main stream while the idea of AOCs almost seems too good to be true. However, the advantages of AOC make the predecessors look obsolete and unsophisticated, and changes the limitation of copper cable as well as playing an important role in high speed data transmission. Nowadays, a variety of AOCs have been launched in the market, such as 10GbE SFP+ AOCs, 40Gbps QSFP+ AOCs and 120G CXP AOCs, for 10G, 40G and 100G applications.


Comparison of Passive, Active, Copper and Fiber


Passive cabling provides a direct electrical connection between corresponding cable ends. Active cables provide the same effect but, by embedding optics and/or electronics within the connectors, can overcome some of the limitations of passive cables. While passive cables are always copper-based, active cables can use either copper wire or fiber optics to provide the link between the cable ends. About the difference between copper and fiber, we have talked above. The following picture shows us the leading types of passive and active cables for data center.


leading types of passive and active cable for data center


Prospect of AOCs
AOCs market has continued to grow and attract new entrants, including some of the world's biggest suppliers of cabling and telecom components. The market and application prospect of AOCs will have a broader development, said Brad Smith, Senior Vice President and Lead Analyst, LightCounting as, "AOCs are positioned to become ".a disruptive force in telecommunications and datacom transceiver markets in the near future."


According to the newest report, sales of active optical cables (AOCs) for the data center will produce $1.5 billion in revenues by 2019. The application fields of AOCs are mainly in data center and have a large proportion. Additionally, in HPC, consumer electronics, HDMI and digital signage, AOCs are also increasing in application. The application of active optical cables (AOC) in future data center will focus on high speed transmission, such as 40Gbps, 100Gbps and even InfiniBand.


The following diagram shows the worldwide AOC market forecast by MSA, from 2014-2020. AOC market keeps growing and developing.


AOC market forecast,2014-2022


Applications of AOCs
In general, AOC assemblies can be used on optical backplanes, rack-to-rack, shelf-to-shelf interconnect, storage, hubs, switches, routers, servers, etc.


Fiberstore AOCs Solution



Fiberstore AOCsFiberstore's AOCs achieve high data rates over long reaches which are the best solutions for high-performance computing and storage applications. We supply AOC products such as 10G SFP+ AOCs, 40G QSFP+ AOCs, QSFP to SFP+ active cable, QSFP+ to 8 x LC AOCs and 120G CXP AOCs etc. In addition, custom cables are available in various lengths, Cisco compatible and other options. Recently, Fiberstore has cut the price of its direct attach cable (DAC) products in order to offer a more cost-effective high speed transmission solution for the old and new customers. Most of the AOCs and other DAC products have a price reduction varied from 10% to 20% and even more. For more detailed information, please visit our latest news or contact us over E-mail sales@fiberstore.com.


Article Source: Active Optical Cable (AOC) – A Rising Star of Telecommunications & Datacom Transceiver Markets

Oznake: SFP+ cable, AOC cable, SFP-10G-AOC3M

06.03.2015. u 09:11 • 0 Komentara • Print • #

srijeda, 04.03.2015.

Direct-attach Cable Market Research 2014

Today's enterprise data center networks are undergoing an infrastructure transformation, requiring higher speeds, greater scalability, and higher levels of performance and reliability to better respond to new business requirements. The 10 Gbps Direct Attached cable (1 m, 3 m, 5 m) is optimized to fully leverage Brocade 10 Gbps solutions.


Active Optical Cable market research Report


The Active Optical Cable market faced many challenges in 2011 from numerous consolidating acquisitions, to the entry of Asian based, low cost suppliers pummeling prices, earthquakes and tsunamis in Japan, to flooding of manufacturing sources in Taiwan and lastly ip battles over who owns what. Stability was regained in 2012 and growth continued strong through the year. But everyone likes the best party and today LightCounting counts 26 players from the AOC market. After a peaceful time period of acquisitions, Mellanox surprised many with its acquisitions of a silicon photonics and a transceiver IC company in early 2013.


In 2012, the market grew 65%, blowing out our previous forecast. It was on top of a stellar 2011. A key difference was the quicker than anticipated up-tick of the 14G InfiniBand FDR AOC segment. We now predict the AOC market to increase 30% to $150 million in 2013.


The InfiniBand market represents the biggest share today and it has already moved on to 14G FDR QSFP+ while traditional Data Centers is sticking with 10G QSFP+ formats. Other protocols with potential AOC opportunities, like SAS, Fibre Channel and PCI Express remain potential markets as their data rates pass 10G.


Copper Cables Mate With Fiber Optic Modules


Interchangeable and hot-swappable with fiber optic modules, the company's SFP+ active direct-attach copper cable assemblies are cost-effective choices to fiber optic transceivers and MPO cables in 10-Gb Ethernet, 8-GB Fibre Channel, and InfiniBand apps. Their active design enables a power consumption of 500 mW per cable end. Active cables also incorporate Rx LOS and Tx disable functionality. All SFP+ cable assemblies meet the MSA spec for signal integrity. Both passive and active cables are available in wire gages from 24 AWG through 30 AWG and incorporate a 360 cable braid-crimp termination that suppresses EMI leakage and offers strain relief.


Increasingly more protocols are moving to higher line rates where copper links start to have issues with reach and EMI and where AOCs offer strong advantages of high data rate, long reach and low price. That is fueling the AOC business, and as a result, facilitating segment growth. Ultimately, there are significant growth and spreading within all facets of the high-speed interconnect market.


Cisco SFP+ Cables For 10 Gigabit Ethernet


SFP+ Direct Attach cable (10GBASE Twinax) is broadly applied in storage, data, and high-performance computing connectivity. The following list is the connector type information and cabling specifications for each Cisco SFP+ DAC cables:


10GBASE-CU SFP+ CableSFP+ DAC 10m



10GBASE SFP+ Active Optical Cable



40GBASE-CR4 QSFP+ Passive Copper Cable



40GBASE-CR4 QSFP+ to 4SFP+



Reference:



Oznake: SFP+ cable, DAC cable, AOC cable, QSFP+ cable

04.03.2015. u 08:46 • 0 Komentara • Print • #

ponedjeljak, 02.03.2015.

Copper SFP Transceivers Make The Network More Flexible

Because of increased port density and flexibility to logistical and inventory advantages, the application of SFP copper modules is a promising development for the optics industry.


SFP copper moduleOptical networking today is definitely the standard for Fiber Channel storage area networks (SANs) and SONET/SDH networks, while Ethernet local area networks (LANs) primarily use copper (i.e. electrical) networking technologies for data rates up to 1 Gbit/sec. As network infrastructures evolve, it'll be very important to maintain both configuration flexibility as well as high port utilization for equipment deployed at the intersection of legacy copper and newly installed optical networks. Maturation of copper SFP transceiver is playing a key role in enabling system designers to meet these objectives while simplifying their inventory and reducing operating costs.


Originally defined in 2000 under a multi-source agreement (MSA) by fifteen module Suppliers, SFP optical transceiver modules combine transmit and receive functions in a low-cost, low-power and compact package format. Rapidly known as the industry standard, SFP modules now are usually used to support Fiber Channel, Gigabit Ethernet (GbE), and SONET/SDH applications, supporting data rates between 125 Mbits/sec and 4 Gbits/sec.


Introduced a couple of years ago, copper SFPs enable system manufacturers to populate SFP ports with either copper or optical transceivers. Because of this, the requirement for copper transceivers in recent years has begun to increase significantly.


The IEEE 802.3 standard defines two different kinds of GbE traffic: 1000BASE-T and 1000BASE-SX/1000BASE-LX. 1000BASE-T refers to GbE over copper (See 100BASE-T SFP), primarily Category 5, 5E, and, increasingly, Category 6 twisted-pair cable. 1000BASE-SX /1000BASE-LX refers to GbE over fiber, with 1000BASE-SX meant for applications over multimode fiber and 1000BASE-LX primarily intended for applications over single mode fiber.


Nowadays in this network environments, systems must handle the continuing convergence of data, voice, and video traffic and also topologies that mix IP with legacy PDH traffic and integrate specialized requirements such as Fiber Channel or ATM. As a result, GbE switches, routers, and multi-service provisioning platforms (MSPPs), one example is, must provide port-level flexibility for handling both fiber and copper interfaces.


Copper transceivers that in accordance with the SFP form factor emerged being the most effective way to optimize port-level flexibility. This parity enables system builders to provide a single line card design which can handle the whole spectrum of copper and fiber connections.


Brand compatible Copper SFPs


OEM Manufacturer - Fiberstore, which offers Copper SFP and 1000BASE-T SFP compatible with equipment such as Cisco (e.g. GLC-T), HP (J8177C, JD089B), Juniper (SFP-1GE-FE-E-T), NETGEAR and Dell 1000BASE-T SFP 310 7225, etc.

Oznake: 100BASE-T SFP, SFP-1GE-FE-E-T, Copper SFP

02.03.2015. u 09:05 • 0 Komentara • Print • #

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SFP modules: These Informations You Should Know
Making the Case for 10 Gigabit Ethernet