Tag Archives: QSFP+ cables

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 The original QSFP MSA now resides as INF-8438 and is no longer an appropriate designation for use, being superseded by SFF-8436 in the SFF Committee,” said Jay Neer, advanced technical market manager, industry standards, Molex Incorporatd.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.fs.com)

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.

QSFP+ to 4 SFP+ Breakout Cable

Figure 1 A QSFP+ to 4 SFP+ Breakout Cable

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.

Six Types of Quad Small Form-Factor Pluggable Plus Cable – QSFP+ Cables

QSFP+ cables provide a high density, high bandwidth, cost effective solution for a variety of markets and applications including switches, routers, HBA’s, high performance computing and mass storage sub-systems by mfr’s such as IBM, Cisco, qLogic, etc. QSFP+ cables are designed for data rates up to 40Gb/s supporting Fibre Channel, Ethernet, SDH/SONET and Infiniband standards.FiberStore provide a wide variety of 40G QSFP+ Cables,including 40G QSFP+ copper cables, 40G QSFP+ AOC cables, QSFP+ to 4 SFP+ Breakout Cables, QSFP+ to CX4 Copper Cables, QSFP+ to 4 XFP Cables and QSFP+ to Mini SAS cables with different lengths and wire gauges. OEM and ODM are welcomed.

40G QSFP+ Copper Cables:

QSFP+ (Quad Small Form-factor Pluggable Plus) Cable Assemblies are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. QSFP+ cables are used for 40 GbE and Infniband standards, to maximize performance. We now provide several lengths to accommodate your installation requirements, welcome to buy it from FiberStore.We offer the 40G QSFP+ copper cables with lengths ranging from 0.5m to 10m.

40G QSFP+ AOC Cables:

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 with the QSFP MSA and IEEE P802.3ba 40GBASE-SR4. It integrates four data lanes in each direction with 40 Gb/s aggregate bandwidth. Each lane is capable of transmitting data at rates up to 10Gb/s with lengths ranging from one to 100 m.

QSFP+ to 4 SFP+ Breakout Cables:

QSFP+ to 4 SFP+ hybrid splitter cables make a great cost-effective interconnect solution to IT professionals by providing much needed space for data centers and cost cuts. These cables allow 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 features 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. We now provide several lengths to accommodate your installation requirements.

QSFP+ to CX4 Copper Cables:

The QSFP to CX4 cables use cutting edge technology to provide an excellent hybrid cable solution for CX4/InfiniBand and QSFP rated switches, network adapters, and storage arrays. These cables have a QSFP connector on one end and a CX4 Connector on the opposite end.

Each CX4-QSFP copper cable has the following features:

a. Permits auto-negotiation between the two connected devices for optimal network throughput.

b. Reaching data rates of up 5Gpbs per channel.

c. Compatible with 4x Infiniband SDR/DDR and 10 GbE applications.

For this kind of QSFP to CX4 Direct Attach Passive Copper Cable, we now provide several lengths to accommodate your installation requirements.

QSFP+ to 4 XFP Cables:

QSFP+ to 4 XFP hybrid splitter cables make a great cost-effective interconnect solution to IT professionals by merging 40G QSFP and 10G XFP enabled host adapters, switches and servers. For typical applications, users can install this kind of splitter cable between an available QSFP port on their 40-Gigabit/s rated switch and feed up to four upstream 10GbE-XFP enabled switches. Each QSFP-XFP splitter cable features a single QSFP connector (SFF-8436) rated for 40-Gb/s on one end and 4 XFP connectors (INF-8077i) on the other end, each rated for 10-Gb/s.

QSFP+ to Mini SAS Cables:

QSFP+ to Mini SAS (SFF-8088) hybrid cables are designed for high-density Serial Attached SCSI (SAS) applications. These Mini SAS Cables are used as an interconnect solution between newer QSFP+ Hardware and older external 3G and 6G Mini SAS equipment and provide data transfer rates up to 10Gbops per channel at distances of up to 10 meters, and they are all compliant to QSFP+ Multi-Source Agreement. Welcome to choose it from our website where different lengths can be selecting.

Fiberstore is a professional fiber optic products supplier and manufacturer,we provide a wide variety of fiber optic products, we not only have the 40G QSFP+ Cables, but also have other types Direct Attach Cables. If you can’t find your need in my company, you can contact to our sales, because we offer the customized service. Welcome to FiberStore,I think it can help to solve your fiber optic problem.