QSFP+ in the 40 Gigabit Ethernet Fiber Optic Media Systems

There are two 40 Gigabit fiber optic physical medium dependent (PMD) specifications in the standard, which provide 40 Gb/s Ethernet over multimode fiber optic (MMF) cable and single-mode fiber optic (SMF) cable. The 40GBase-SR4 short reach fiber optic system sends four lanes of PCS data over four pairs of multimode cables, for a total of eight fiber strands. The 40GBase-LR long-reach system sends four lanes of PCS data four wavelengths of light, carried over a single pair of fiber optic cables.

The first 40 Gb/s transceivers were based on the C form-factor pluggable (CFP) module, 40G CFP Transceiver which is a large module capable of handling up to 24 watts of power requirements were based on this module. The CFP modules is specified by a multiagreement.

CFP module, which can be used to provide either a 40GBase-SR4 or a 40GBase-LR4 transceiver. The module is a 40 GBase-LR4 connection is described. The most popular connector for 40 Gb/s interfaces these days is the QSFP+ module: it takes up much less space on a switch or server interface, making it possible for vendors to provide multiple QSFP+ transceiver module for 40GBase-SR4 is provided with a multifiber push-on (MPO) media connector, carrying multiple pairs of fiber optic cables to support the four lanes of data for the short reach fiber standard. The 40GBase-LR4 long-reach system uses a QSFP+ transceiver equipped with a duplex fiber connector for connecting to the single pair of fiber cables.

Recently Molex Incorporated, the world's largest plug-in companies introduced the QSFP+ interconnect solution designed for a multimode of markets and applications including switches, router, Host Bus Adapters (HBAs), enterprise data centers. high-performance computing (HPC) and storage. Components of the system include the Electromagnetic Interference (EMI) shielding cage, passive cable assembly, active cable assembly, optical MTP cable assembly, optical QSFP+ loopback, and a 38-circuit SMT iPass host connector.

"The QSFP has evolved to QSFP+ to meet 40Gbps data rates just as SFP progressed from SFP to SFP+ for 40 Gbps rates. The original QSFP MSA now resides as INF-8438 and is no longer an appropriate designation for use, being superseded by SFF-8436 in the SFF Committee," said Jay Neer, advanced technical market manager, industry standards, Molex Incorporatd.

QSFP+ uses a standard 38-circuit iPass SMT host connector with a proven mating interface that connector with a proven mating interface that enables high durability. The iPass SMT host connector with a proven mating interface that enable high durability. The iPass contact design, also implemented in other standards such as PCIe, SAS, SATA, Ethernet and InfiniBand, provides four balanced differential channels featuring class-leading isolation, and bandwidth, with durability cycling up to 250 cycles. The Molex host connector mounts to the PCB beneath a low-profile metal cage that provide latch points and is engineered to provide appropriate EMI protection for the host system port. Optional light pipes and heat sink thermal solutions can be slipped onto the cage when needed.

The QSFP+ cables assemblies are designed to accommodate stacked and ganged connector configurations in extremely high density requirements. They support 40G Ethernet, InfiniBand, SAS and SONET/SDH standards with different data rate options.

The optical QSFP+ MTP cable assemblies and loopbacks meet the QSFP+ interface specification. Cables are constructed with 12-fiber 3.00mm round cable for data center interconnect cable assembly applications.

The round cable provides much improved cable management over the traditional flat ribbon cable. A robust 4.50mm round optical cable ensure cable integrity and improved cable routing for installations that require connections greater than 25m apart.

QSFP+ breakout cable assemblies are available for SFP+ or patch panel installations. Loopbacks feature a compact housing compatible with module spacing and loop optical transmit ports to receive ports for testing, burn -in, and field troubleshoot.

The related products what mentioned above all can be offered from Fiberstore, at the same time, I need to tell you good news that some optical fiber products are working with 30% of the price discount now. Welcome to visit our online store. (http://www.fiberstore.com)

40G Ethernet Fiber Optic Transceivers Introduction

The development of a brand new Ethernet system that operates up to 10 Gb/s began with a Higher Speed Study Group "Call For Interest" meeting in July 2006. In response, an IEEE task force was formed to develop a 100 Gb/s Ethernet system in the 802.3ba supplement. This effort was then expanded to include 40 Gb/s Ethernet, and the combined 40 and 100 Gb/s 802.3ba supplement was completed and published in 2010. The 40 and 100 Gb/s specifications were adopted into the standard as Clauses 80 through 89.

There's two 40 Gigabit fiber optic physical medium dependent (PMD) specifications in the standard, which offer 40 Gb/s Ethernet over multimode fiber optic (MMF) cable and single-mode fiber optic (SMF) cable. The 40GBASE-SR4 short reach fiber optic system sends four lanes of PCS data over four pairs of multimode cables, for a total of eight fiber strands. The 40GBASE-LR4 long-reach system sends four lanes of PCS data over four wavelengths of light, carried over a single pair of fiber optic cables. And today,we introduce Fiberstore two kinds of 40 Gigabit fiber optic transceivers.

The first 40 Gb/s transceivers were depending on the C form-factor pluggable module(40Gbit/s CFP Transceiver), that is a large module able to handle faster than 24 watts of power dissipation. First-generation transceivers with multiple chips and greater power requirements were according to this module. The CFP module is specified by a multiagreement.

Figure 1 shows a CFP module, which can be used to supply either a 40GBASE-SR4 or a 40GBASE-LR4 transceiver. The module shown in this figure is a 40GBASE-LR4 transceiver, which provides two SC fiber optic connectors for connection to a pair of single-mode fibers.

Figure 1. 40GBASE-LR4 CFP Optical Transceiver Module

The second is named 40-Gigabit QSFP+ transceiver module,that is a hot-swappable, parallel fiber-optical module with four independent optical transmit and receive channels. These channels can terminate in another 40-Gigabit QSFP+ transceiver, or the channels could be broken out to four separate 10-Gigabit SFP+ transceivers. The QSFP+ transceiver module connects the electrical circuitry of the system with either a copper or an optical external network. (See Figure 2 for a view of the optical QSFP+ transceiver.) The transceiver is used primarily in short reach applications in data center equipment, routers, and switches where it offers higher density than SFP+ modules.

Figure 2 shows a single-mode fiber optic cable terminated in an LC optical plug connector. Also shown is a 40G QSFP+ transceiver module with LC optical sockets.

Figure 2. 40GBASE-LR4 QSFP+ Transceiver Module

The QSFP+ 40GBASE-LR4 transceiver module is the newest technology for OEM next-generation systems where industry leaders are eager to extend reach, increase speed and lower their customers'overall power consumption and simply large data center and enterprise applications. Moving to 40GbE QSFP+ also significantly improves port density.

The 40GbE QSFP+ module extends a pre-existing 40G family of products provided by Fiberstore, such as the 40GBASE-LR4 module from the larger CFP form factor which is seeing initial deployments in customer systems now and has been recently announced as production released. 40GBASE-LR4 technology offers OEMs a cheaper cost, longer reach substitute for traditional 40G Sonet/SDH client interfaces and makes 40G deployments much more economically viable in high-speed switches and edge routers.

Fiberstore, a world leader in high-speed optical communications technology,which provides all kinds of Internet networking connection solution. Except to provides fiber optic transceivers and DAC cables, fiberstore.com also provides customized solutions for all needs and specifications.

Fiberstore DAC Cable Compatible For Cisco 10Gigabit Ethernet

Fiberstore, the leading interconnect manufacturer formally announced the expansion of its high-speed 10-Gigabit products which have established a reputation for premium quality, proven performance and competitive prices. The Fiberstore interconnect solutions: 10-Gigabit solution saving starts Now at Fiberstore on demand. Buy direct from the world’s largest SFP+ cable OEM and save with new discounted pricing.

10G SFP+ Direct Attach Cable (DAC), twinax cable with SFP+ connector, is designed to work with equipment with 10G SFP+ interface,and pirce is cheap.For example: Cisco SFP-H10GB-CU1M Compatible SFP to SFP Copper direct-attach cables only need US$ 18.00. (from Fiberstore Interconnect Compatible Solutions).This cable offers the same function with Cisco SFP-H10GB-CU1M and it is fully compatible with Cisco devices.They provide a low cost, low power and low latency interconnect solution for 10-Gigabit Ethernet, Fiber Channel and other industry standards, and are direct attached compliant and fully conform to the SFP+ MSA specifications.

Fiberstore offers all DAC cable compatible for Cisco 10-Gigabit Ethernet:
SFP+ Twinax Copper Cables

Figure 1. 10G SFP+ Twinax Copper Cable.

SFP+ copper twinax direct attach cables are suitable for very short distances and offer a cost-effective way to connect within racks and across adjacent racks. Fiberstore passive Twinax cables in lengths of 1, 1.5, 2, 2.5, 3 and 5 meters, and active Twinax cables in lengths of 7 and 10 meters.(Cisco Twinax Cables)

SFP+ Active Optical Cables

Figure 2. 10G SFP+ Active Optical Cable.

SFP+ active optical cables (AOC) are direct-attach fiber assemblies with SFP+ connectors. They are suitable for very short distances and offer a cost-effective way to connect within racks and across adjacent racks. Fiberstore offers Active Optical Cables in lengths of 1, 2, 3, 5, 7, and 10 meters.

Fiberstore offers customized service for cable length. Fiberstore provides 10G SFP+ cables, including 10G SFP+ copper passive / active cable and 10G SFP+ AOC cable, in various lengths according to requirement of customers. (Custom SFP+ Direct Attach Cable)

If you are in the market for high speed copper cables, such as CX4 Cables, HD Mini-SAS Cables, SFP+ Cables, QSFP Cables. Today is the perfect time to buy with the 30% Saving.These cables are 100% compatible with major brands like Cisco, HP, Juniper, Enterasys, Extreme, H3C and so on.

Four Kinds Of Cables For Cisco 40-Gigabit Compatible Solution

These cables for cisco 40-gigabit compatible solution,which is provided by the Fiberstore. Now available cables: 40G QSFP+ DAC Cables from Fiberstore Interconnect Solutions in lengths up to 100m (330') for 40-Gigabit compatible solution. Buy direct from the World's Largest QSFP+ cable OEM and save with new discounted pricing. Cisco QSFP+/SFP+ Cables. Here are four kinds of DAC Cables for Cisco 40-Gigabit Compatible Solution.

QSFP to QSFP Copper Direct-Attach Cables

 

QQ-AC-30-X-CO series products are compatible for Cisco 40GBASE-CR4 QSFP direct-attach copper cable, 1-10 meter, passive and active solution.   Fiberstore QSFP to QSFP copper direct-attach 40GBASE-CR4 cables are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP ports of Cisco switches within racks and across adjacent racks. We offers passive cables in lengths of 1, 3, and 5 meters and active cables in lengths of 7 and 10 meters.

 

 

Part No.	Data Rate	Length	Wire AWG	Connector Type	Temp. Range
QQ-PC-30-1-CO	Up to 40G	1m	AWG30	Passive Copper	0-70℃
QQ-PC-30-3-CO	Up to 40G	3m	AWG30	Passive Copper	0-70℃
QQ-PC-30-5-CO	Up to 40G	5m	AWG30	Passive Copper	0-70℃
QQ-AC-30-7-CO	Up to 40G	7m	AWG30	Active Copper	0-70℃
QQ-AC-30-10-CO	Up to 40G	10m	AWG30	Active Copper	0-70℃

 

QSFP to Four SFP+ Copper Breakout Cables

 

Q4S-PC-30-X-CO series products are compatible for Cisco 40GBASE-CR4 QSFP to 4 10GBASE-CU SFP+ direct attach cable, 1- 10 meter, passive and active solution. Fiberstore QSFP to four SFP+ copper direct-attach breakout cables  are suitable for very short distances and offer a highly cost-effective way to connect within racks and across adjacent racks. These breakout cables connect to a 40G QSFP port of a Cisco switch on one end and to four 10G SFP+ ports of a Cisco switch on the other end. Our passive cables in lengths of 1, 3, and 5 meters and active cables in lengths of 7 and 10 meters.

 

 

Part No.	Data Rate	Length	Wire AWG	Connector Type	Temp. Range
Q4S-PC-30-1-CO	Up to 40G	1m	AWG30	QSFP+ to 4 SFP+	0-70℃
Q4S-PC-30-3-CO	Up to 40G	3m	AWG30	QSFP+ to 4 SFP+	0-70℃
Q4S-PC-30-5-CO	Up to 40G	5m	AWG30	QSFP+ to 4 SFP+	0-70℃

 

QSFP to Four SFP+ Active Optical Breakout Cables

 

Q4S-AOC-X-CO series products are compatible for Cisco 40GBase-AOC QSFP to 4 SFP+ active optical breakout cable 1-10 meter solution. Fiberstore QSFP to four SFP+ Active Optical breakout cables are suitable for very short distances and offer a flexible way to connect within racks and across adjacent racks. Active optical cables are much thinner and lighter than copper cables, which makes cabling easier. AOCs enable efficient system airflow and have no EMI issues, which is critical in high-density racks. These breakout cables connect to a 40G QSFP port of a Cisco switch on one end and to four 10G SFP+ ports of a Cisco switch on the other end. We offer active optical breakout cables in lengths of 1, 2, 3, 5, 7, and 10 meters.

 

 

Part No.	Data Rate	Length	Cable Type	Connector Type	Temp. Range
Q4S-AOC-1-CO	Up to 40G	1m	AOC Cable	QSFP+ to 4SFP+	0-70℃
Q4S-AOC-2-CO	Up to 40G	2m	AOC Cable	QSFP+ to 4SFP+	0-70℃
Q4S-AOC-3-CO	Up to 40G	3m	AOC Cable	QSFP+ to 4SFP+	0-70℃
Q4S-AOC-5-CO	Up to 40G	5m	AOC Cable	QSFP+ to 4SFP+	0-70℃
Q4S-AOC-7-CO	Up to 40G	7m	AOC Cable	QSFP+ to 4SFP+	0-70℃
Q4S-AOC-10-CO	Up to 40G	10m	AOC Cable	QSFP+ to 4SFP+	0-70℃

QSFP to QSFP Active Optical Cables

 

QQ-AOC-X-CO series products are compatible for Cisco 40GBase QSFP+ AOC cable with direct-attach active optical 1-10 meter's solution. Fiberstore QSFP to QSFP copper direct-attach 40GBASE-CR4 cables are suitable for very short distances and offer a flexible way to connect within racks and across adjacent racks. Active optical cables are much thinner and lighter than copper cables, which makes cabling easier. AOCs enable efficient system airflow and have no EMI issues, which is critical in high-density racks. Fiberstore offers active optical cables in lengths of 1, 2, 3, 5, 7, 10, and 15 meters.

 

 

Part No.	Data Rate	Length	Wire AWG	Connector Type	Temp. Range
QQ-AOC-1-CO	Up to 40G	1m	Fiber	QSFP+ AOC	0-70℃
QQ-AOC-2-CO	Up to 40G	2m	Fiber	QSFP+ AOC	0-70℃
QQ-AOC-3-CO	Up to 40G	3m	Fiber	QSFP+ AOC	0-70℃
QQ-AOC-5-CO	Up to 40G	5m	Fiber	QSFP+ AOC	0-70℃
QQ-AOC-7-CO	Up to 40G	7m	Fiber	QSFP+ AOC	0-70℃
QQ-AOC-10-CO	Up to 40G	10m	Fiber	QSFP+ AOC	0-70℃
QQ-AOC-15-CO	Up to 40G	15m	Fiber	QSFP+ AOC	0-70℃

 

Fiberstore also offers customized service for "cable length".Today is the perfect time to buy with the 30% Saving.

10G SFP+ Cu Introduction

The 10G SFP+ Cu (shorthand for that 10G SFP+ copper direct attach cable) media type isn't specified by the 802.3 standard, as well as the shorthand identifier was introduced by the vendors who developed this cable type. This low-cost short copper cable segment is beneficial, as an example, for interconnecting a collection of switches, as well as for short-distance connections between switch ports and Ethernet interfaces on servers as well as other devices. Before the growth and development of 10GBASE-T, this Direct Attach Cable (DAC) was the only real low-cost copper connection designed for 10 Gbps operation.

The DAC is terminated having a Small Form-Factor (SFF) connector module named the SFP+ (Small Form-factor Pluggable Plus). The SFP+ Transceiver module suits a port that's roughly the size of an RJ45-style port, so that it is feasible for vendors to offer a higher port density on their own switches.A 10G SFP+ Cable shown as below:

10Gbase SFP+ Direct Attach Cable

The SFP+ module isn't standardized from any official standards body,but rather is specified by a Multi-Source Agreement (MSA) which was developed among competing manufacturers. MSAs will be the primary method used to develop communications connectors and transceiver modules which are utilized in Ethernet as well as other network systems. As technology advances, cabling and equipment vendors work with each other to develop smaller and much more efficient connectors and modules, with all the MSA being a rapid way of developing these enhancements. The SFP+ will be the second generation of the SFP+ standard. The classic SFP+ specifications support operation up to 4.5 Gbps. The SFP+ features support for 10 Gbps or better signaling, according to improved impedance matching specifications for much better signal transmission.

Vendors provide both active and passive versions of the 10GSFP+ Cu DAC. An DAC assembly is recognized as active in case there are signal processing electronics in the SFP+ module to increase signal quality and supply a lengthier cable distance. The lowest priced approach is the passive DAC, which has a tendency to be shorter; the active DAC can make it a possibility to support longer and thinner cable assemblies. The accessible cable lengths range from 1 m to 7 m, even though you will discover variations in supported cable lengths among different vendors.

The direct attach SFP+ Twinax cables use the same SFP+ connector module which is used on 10 Gbps optical fiber links. However, instead of utilizing an optical transceiver each and every end as well as a length of fiber optic cable, the DAC uses the SFP+ module, taking away the expensive optical lasers along with other electronic components. Both in active and passive cables, a smaller electrical component is used to recognize the SFP+ module and cable type to the Ethernet interface; that component is lower price and consumes not much power.

A DAC Cable is a limited assembly that's bought at confirmed length, using the SFP+ modules permanently attached with each side of the cable. Although significantly thinner than 10GBASE-CX4 cable, it is stilla comparatively stiff cable. To set up the cable on anything apart from closely associated equipment, you've got to be ready to route the cable and it is attached SFP+ modules through any intervening cable management trays and cable guides.

Reference: Fiberstore

The Advantages Of QSFP+ PSM4 AOC

40G QSFP+ AOC has been introduced Few days ago,Today we are going to introduce Fiberstore’s QSFP+ (Quad Small Form-factor Pluggable Plus) PSM4 (Parallel Single Mode Quad) Active Optical Cables (AOCs) which use a Silicon Photonics (SiPh) optical engine and use lower cost singlemode fiber for transmission distances up to 4km. QSFP+ cables are used for 40GBASE and Infniband standards, to maximize performance.Whether QSFP+ PSM4 AOC and 40G QSFP+ AOC, is one of the Direct Attach Cable.

ADVANTAGES OF SIPH-BASED PSM4 SOLUTION FOR 4-KM REACH

Multiple forces are driving the implementation of PSM4 and SiPh in next generation data-center designs and architectures. PSM4 and SiPh fill an important gap in data-center interconnect options, the gap between the reach of 25G multimode options and that of Long Range (LR) optical approaches. Using pigtail designs with these technologies can ease implementation via easy mating to structured cabling. From a futureproofing perspective, PSM4 is an approach that can accommodate both current and future bandwidth upgrades. A SiPh-based PSM4 approach helps resolve the multiple challenges of higher bandwidth, longer distances, low power, and futureproofing. SiPh-based LR PSM4 products offer seven primary advantages.

Distance: With transmission distances up to 4 km, they can accommodate most, if not all, new data-center requirements. Power: SiPh-based AOCs use basically the same power consumption as VCSEL-based products: under 1 W for a 10G QSFP+ AOC and 1.5 W at 25 Gbps. Cost: The cost is roughly the same as VCSEL-based AOCs, but since they are single mode (SM), they use much less expensive SM cable. As speeds increase, VCSEL-based products require ever more expensive types of fiber. After most networks have upgraded to OM3, an upgrade to OM4 can be costly. And what comes after OM4, and how soon will it be needed? With SM SiPh AOCs, the fiber remains inexpensive SM and stays consistent as data rates increase. Futureproof Structured Cabling: Upgrading structured cabling is less economically viable as speeds continue to increase. PSM4 can accommodate 10 GbE, 40 GbE, 4x10 Gbps aggregated QDR Infiniband, 4x14 Gbps FDR Infiniband, 100 GbE, 4x25 Gbps aggregated. Pigtail Plug-in Options for Ease of Installation and Upgrades: PSM4 AOCs are available in pigtail versions. Here, one end is a traditional QSFP+ active interface and the other either MPO or LC connectors. This enables a quick connection to structured cabling (so the AOC side doesn't have to be pulled long distances) and the ability to quickly upgrade as needed with no costly structured cabling upgrade and associated data-center downtime. SiPh Actives Becoming Broadly Available: An ecosystem of proven, reliable, cost-effective SiPh devices exists to accommodate SM data-center links. SiPh is widely deployed today in PSM4 AOCs, and several new entrants into the market are offering a variety of options. SiPh Offers a Path Beyond 25G: VCSELs face increasing challenges as speeds increase. With SiPh-based systems, most modulating schemes have a clear and well-understood technology path to 50G, 100G, and beyond.

SM SiPh bridges the gaps caused by the dual requirements of longer distances and higher data transmission speeds. With a broad base of products both available and being developed by multiple suppliers, PSM4 and SiPh AOCs can be deployed today to enable new data-center architectures, with the assurance that they'll provide a path to cost-effectively meet future upgrade requirements.

Fiberstore offers 40GBASE QSFP+ to QSFP+ active optical cables with lengths of 10m to 100m.Lengths and compatible brands can be customized up to customers' requirements.So,if you or your friends want to buy qsfp 4x10g aocs, Fiberstore could be your first choice!

Article source:http://www.fiberstore.com/QSFP+-PSM4-Active-Optical-Cables-Tutorial-aid-402.html

Features And Benefits Of QSFP+ PSM4 AOC

• Low power consumption of less than 0.78W QDR and 1.1W FDR per cable end, 30% less than competition: Improves overall data-center power consumption and thermal efficiency. Enables deployment of additional ports for increased number of AOCs per system, resulting in more connectivity options and total system cost savings.
• Four bi-directional (BIDI) optical data links per end, operating at data rates from 1.0 to 14.0 (aggregated 56.0) Gbps for FDR versions and 1.0 to 10.3125 (aggregated 40.0) Gbps for QDR versions: Compatible with multiple protocols including InfiniBand Fourteen Data Rate (FDR), 10 Gbps Ethernet, Fibre Channel (8 and 10 Gbps), SAS 2.1 and 3.0 (6 and 12 Gbps) and other protocol applications.
• Low Bit Error Rate (BER) of 1E-18: Provides increased data reliability and robustness of link versus standard transceivers with 1E-12 errors per link.
• QSFP+ PSM4 to MPO cables available with loss budgets of 2 and 4dB, enabling links up to 4km: Supports use in structured cabling systems.
• Lower cost option versus standard transceivers and cable assemblies: Allows for significantly more structured, economical cable links.
• Low-loss singlemode pigtail versions available: Ensures network is capable of handling future bandwidth increases. Minimizes future highcost cable upgrades as bandwidth requirements increase.
• QSFP+ PSM4 to QSFP+ PSM4 AOC cables are permanently attached to the fiber, with no air gaps: Interface provides protection from environmental contaminants and other user disturbances during installation.
• Firmware is field flashable via an I2C bus: Ensures cables can be re-flashed while in the host system.

Article source: http://www.fiberstore.com/QSFP+-PSM4-Active-Optical-Cables-Tutorial-aid-402.html

40G Ethernet Fiber Optic Transceiver

There are two 40Gigabit fiber optic physical medium dependent (PMD) specifications within the standard, which offer 40Gb/s Ethernet over multimode fiber optic (MMF) cable and single-mode fiber optic (SMF) cable. The 40GBASE-SR4 short reach fiber optic system sends four lanes of PCS data over four pairs of multimode cables, for a total of eight fiber strands. The 40GBASE-LR4 long-reach system sends four lanes of PCS data over four wavelengths of light, carried over a single couple of fiber optic cables.

The first 40G transceivers were based on the C form-factor pluggable (CFP) module, that is a large module capable of handling up to 24 watts of power dissipation. First-generation transceivers with multiple chips and bigger power requirements were according to this module. The CFP module is specified by a multiagreement.3

Figure 1 shows a CFP module, that you can use to offer either a 40GBASE-SR4 or a 40GBASE-LR4 transceiver. The module shown with this figure is a 40GBASE-LR4 transceiver, which supplies two SC fiber optic connectors for link to a pair of single-mode fibers. The entire process of the 40GBASE-LR4 connection is described later in this particular chapter.

Figure 1 40GBASE-SR4 CFP

The most famous connector for 40Gb/s interfaces currently is the QSFP+ module: it requires up far less space on a switch or server interface, making it possible for vendors to offer multiple QSFP+ ports in the same space as a single CFP port. The QSFP+ transceiver module for 40GBASE-SR4 is supplied with a multifiber push-on (MPO) media connector, carrying multiple pairs of fiber optic cables to support the four lanes of data for the short reach fiber standard. The 40GBASE-LR4 long-reach system uses a QSFP+ transceiver designed with a duplex fiber connector to connect for the single pair of fiber cables.

The MPO plug supports the eight fiber cables needed to supply a 40GBASE-SR4 connection, plus four fibers which are unused. The MPO plughas two alignment pins, that help keep each connector and it is fibers correctly aligned once the two connectors are mated. Also shown is an end-on have a look at a plug connector, which shows the 12 fibers arranged between the two alignment pins. Note that the important thing on the plug connector means that the plug connector might be correctly oriented from the socket.

Figure 2 shows a single-mode fiber optic cable terminated in an LC optical plug connector. Also shown is a 40G QSFP+ to 8 LC Connetor Breakout Active Optical Cable.

Figure 2 40GBASE QSFP+ to LC Connetor(8) Breakout Active Optical Cable

Fiberstore optical cables could be ordered in specific lengths is actually specific connector types, as needed from your circumstances. If you're connecting an optical jumper cable from the 40G QSFP+Transceiver module in a switch port straight to a server interface, you'll need a brief cable using the correct cable connectors on each side. For 40GBASE-SR4, this cable might have MPO connectors on both ends. If you're connecting a 40G QSFP+ Transceiver module in a switch port to an optical connector termination reason for your data center or cabling closet, the optical connectors in your termination point may be different from the ones suited for the 40G QSFP+ Transceiver module, requiring a cable having a different type of optical connector on both ends.

The Introduction Of 40G QSFP+ AOC

The 40G QSFP+ Active Optical Cable (AOC) is a parallel 40Gbps Quad Small Form Factor Pluggable (QSFP+) Active Optical Cable, which supplies higher port density and total system cost. The QSFP+ optical modules provide four full-duplex independent transmit and receive channels, each are able of 10Gbps operation 40Gbps aggregate bandwidth of at least 100m long multimode fiber.

The 40G QSFP+ AOC is according to QSFP+ Multi-Source Agreement(MSA) design and shape, optical/electrical connections and digital diagnostic interface. It is designed to meet the most demanding external operating conditions including temperature, humidity and EMI interference. This module supplies a quite high functionality and feature integration, through a two-wire serial interface to reach.

40G QSFP+ AOC Functional Description

The TF-QQxxx-N00 converts parallel electrical input signals using a laser driver and a Vertical Cavity Surface Emitting Laser (VCSEL) array into parallel optical output signals. The transmitter module accepts electrical input signals which can be voltage suitable for Common Mode Logic (CML) levels. All input data signals are differential and therefore are internally terminated. The receiver module converts parallel optical input signals using a receiver and a photo detector array into parallel electrical output signals. The receiver module outputs electrical signals, which are voltage suitable for Common Mode Logic (CML) levels. All data signals are differential and support a data rates as much as 10 Gbps per channel.

A single+3.3V power is needed to power up the module. Both power source pins VccTx and VccRx are internally connected and will be used concurrently. As per MSA specifications the module offers 7 low speed hardware control pins (including the 2-wire serial interface): ModSelL, SCL, SDA, ResetL, LPMode, ModPrsL and IntL.

Module Select (ModSelL) is an input pin. When held low by the host, the module responds to 2-wire serial communication commands. The ModSelL allows the use of multiple QSFP+ modules on a single 2-wire interface bus ¨C individual ModSelL lines per QSFP+ module can be used.

Serial Clock (SCL) and Serial Data (SDA) are needed for the 2-wire serial bus communication interface and let the host to connect to the QSFP+ memory map.

The ResetL pin to produce a complete module reset, the return capsule back to the default state , when within the ResetL pin low hold time is longer than the minimum pulse length . Master reset should be performed bit desperate state until reset interrupt instructions to finish the module .

Low Power Mode (LPMode) pin can be used to set the maximum power consumption for the module so that you can protect hosts that aren't capable of cooling higher power modules, should such modules be accidentally inserted.

Module Present (ModPrsL) is a signal local to the host board which, even without the a module, is generally pulled up to the host Vcc. When a module is inserted in to the connector, it completes the path to ground though a resistor on the host board and asserts the signal. ModPrsL then indicates a module happens by setting ModPrsL to a "Low" state.

Interrupt (IntL) is an output pin. When "Low", it indicates a probable module operational fault or a status critical to the host system. The host identifies the origin of the interrupt with all the 2-wire serial interface. The IntL pin can be an open collector output and should be pulled to the Host Vcc voltage on the Host board.

40G QSFP+ Active Optical Cable (AOC) is a high performance, low power consumption integrated cable for short-range multi-lane data communication and interconnect applications, supporting 40G Ethernet, fiber channel and PCIE. It is compliant using the QSFP+ MSA and IEEE P802.3ba 40GBASE-SR4. It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference. Fiberstore QSFP+ Cables can be found in various lengths along with other options.

QSFP+ Breakout Cables

QSFP+(Quad Small Form-Factor Pluggable Plus) cables offer a high density, high bandwidth, cost-effective solution for a number of markets and applications including switches, routers, HBA's, top rated computing and mass storage sub-systems by mfr's such as IBM, qLogic, Cisco, etc. QSFP+ cables are created for data rates up to 40Gb/s supporting Fibre Channel, Ethernet, SDH/SONET and Infiniband standards.

Breakout Cable

Breakout cable is a hybrid solution. In the breakout cable, each fiber is treated like a separate unit, complete with a sheath and strength member. This design eliminates the necessity for a breakout kit, as the sheath allow you to attach connectors easily.

Breakout cables let fiber subunits move freely, and so they protect each fiber due to their thicker coating/strength member arrangement. Each fiber subunit is configured as a tight tube. Breakout cables also come designed with a separate strength member similar to the loose-tube design.

Breakout cable is really an optical fiber cable containing several jacketed simplex optical fibers packaged together in an outer jacket. This can be different from distribution-style cable, in which tight-buffered fibers are bundled together, with simply the outer cable jacket of the cable protecting them. The style of breakout-style cable adds strength for ruggedized drops, though the cable is greater and much more expensive than distribution-style cable. Breakout cable is acceptable for brief riser and plenum applications as well as use in conduits, in which a quite simple cable run is planned to avoid the use of any splicebox or spliced fiber pigtails.

Because each fiber is individually reinforced, the cable can be easily divided into individual fiber lines. Each simplex cable inside the outer jacket might be broken out after which continue like a patch cable, for instance in a fiber to the desk application in an business building. This permits connector termination without requiring special junctions, and can reduce or eliminate the need for fiberoptic patch panels or an optical distribution frame. Breakout cable requires terminations to be done with simple connectors, which may be preferred for some situations. A more common solution today is the use of a fanout kit that adds a jacket to the very fine strands of other cable types.

QSFP+ Breakout Cables create a great cost-effective interconnect means to fix IT professionals by giving much needed space for data centers and cost cuts. The cables provide inexpensive and low power consumption interconnect solution for 40-Gigabit Ethernet, Fibre Channel, QDR InfiniBand, 10 Gigabit applications and other industry standards. We provide QSFP+ to 4 SFP+ Passive Copper Breakout DAC, QSFP+ to 4SFP+ Breakout AOC and QSFP+ to eight x LC AOC. Custom cables can be found in various lengths along with other options.

Figure 1 A QSFP+ to 4 SFP+ Breakout Cable

QSFP+ to 4 SFP+ Breakout Cables

QSFP+ to 4 SFP+ hybrid splitter cables produce a great cost-effective interconnect strategy to IT professionals by giving necessary space for data centers and price cuts. These cables permit you to connect your QSFP+ and SFP+ Switches and Network cards without upgrading your entire data center or storage array. They can be used for QDR infiniBand, 40 Gigabit Ethernet and 10Gigabit applications. Each QSFP-SFP+ splitter cable includes a single QSFP connector (SFF-8436) rated for 40-Gb/s on one end and (4) SFP+ connectors (SFF-8431), each rated for 10-Gb/s, on the other side. We currently provide several lengths to support your installation requirements.

QSFP+ Breakout Cables provide low cost and low power consumption interconnect solution for 40-Gigabit Ethernet, Fibre Channel, QDR InfiniBand, 10 Gigabit applications and other industry standards.