Tag Archives: SFP transceiver

Dual-Rate 1/10G SFP+ Transceiver Overview

A dual-rate optical transceiver means that an optical transceiver can support two different data rates. Users could use dual-rate optical transceivers to achieve the full forward and backward compatibility of their systems, which helps them save a lot. The common dual-rate optical transceivers in today’s market is the 1G/10G dual-rate SFP+ transceiver. In this post, we will give a brief introduction to this kind of dual-rate transceiver.

Dual-Rate 1/10G SFP+ Transceiver

1/10G dual-rate SFP+ transceivers are designed for use in 1-Gigabit and 10-Gigabit Ethernet links over single-mode fiber (SMF) or multi-mode fiber (MMF). They are compliant with SFF-8431, IEEE 802.3-2005 10GBASE-SR/SW, 10GBASE-LR and 1000BASE-SX, 1000BASE-LX. Digital diagnostics monitoring (DDM) or digital optical monitoring (DOM) functions are available in dual-rate SFP+ transceivers via a 2-wire serial interface as specified in SFF-8472, so users can monitor many parameters of the transceiver module in real-time. There are many different vendors to supply 1G/10G dual-rate SFP+ transceiver, but the standards and protocols which they complied with are the same. The picture below shows an Intel E10GSFPSR 1/10G dual-rate SFP+ transceiver.

Intel E10GSFPSR Compatible 10GBASE-SR and 1000BASE-SX SFP+

Two Types of Dual-Rate SFP+ Transceiver

1G/10G dual-rate 10GBASE-LR and 1000BASE-LX SFP+ transceivers are designed for use in 1-Gigabit and 10-Gigabit Ethernet links up to 10km over SMF. They are compliant with SFF-8431, IEEE 802.3-2005 10GBASE-LR/LW and 1000BASE-LX. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. 1G/10G dual-rate 10GBASE-LR and 1000BASE-LX SFP+ transceivers, such as Finisar FTLX1471D3BCV and Intel E10GSFPLR 10GBASE-LR and 1000BASE-LX SFP+ transceivers, are for applications specifically designed for 10G SFP+ ports and 1G/10G SFP+ ports. The FTLX1471D3BCV is a “limiting module”, which means it employs a limiting receiver. Host board designers using an EDC PHY IC should follow the IC manufacturer’s recommended settings for interoperating the hostboard EDC PHY with a limiting receiver SFP+ module. These transceivers are RoHS compliant.

1G/10G dual-rate 10GBASE-SR and 1000BASE-SX SFP+ transceivers are designed for use in 1-Gigabit and 10-Gigabit Ethernet links over MMF. They are compliant with SFF-8431, IEEE 802.3-2012 10GBASE-SR/SW and 1000BASE-SX. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. 1G/10G dual-rate 10GBASE-SR and 1000BASE-SX SFP+ transceivers, such as Finisar FTLX8571D3BCV, Finisar Intel FTLX8571D3BCV-IT, and Intel E10GSFPSR SFP+ transceivers, are for applications specifically designed for 10G SFP+ ports and 1G/10GSFP+ ports. The FTLX8574D3BCV is a “limiting module”, i.e., it employs a limiting receiver. Host board designers using an EDC PHY IC should follow the IC manufacturer’s recommended settings for interoperability with an SFP+ limiting module.

Conclusion

A 1G/10G dual-rate SFP+ can be used in both 1 Gigabit Ethernet and 10 Gigabit Ethernet links which eases the transition from 1Gb/s to 10Gb/s systems. This kind of SFP+ transceivers provide you a cost-effective solution for upgrading to higher needs of data rates. Moreover, 40G is becoming more and more popular and 100G is developing rapidly, thus the market of dual-rate optical transceivers will be promising. Fiberstore manufactures and supplies a complete range of SFP+ transceivers. Dual-rate 1G/10G SFP+ provided by Fiberstore can be designed to be compatible with many major brands, such as Cisco, HP, Juniper etc. And every optical transceiver has been tested to ensure our customers to receive the optics with superior quality.

QSFP+ Cables Overview

QSFP+ (quad small form-factor pluggable plus) cable offer a high density, high bandwidth, and cost-effective solution for a number of markets and applications. There are many kinds of QSFP+ cable. QSFP+ breakout cable is one of them. What is QSFP+ breakout cable? In this post, some basic information about QSFP+ breakout cables will be given.

What Is QSFP+ Cable?

To know what QSFP+ breakout cable is, first you may ask what a breakout cable is. Breakout cable, or fanout cable, is an optical fiber cable containing several jacketed simplex optical fibers packaged together inside an outer jacket. Breakout cable is a hybrid solution. In a breakout cable, each fiber is individually reinforced, and each fiber is treated like a separate unit, so the cable can be easily divided into individual fiber lines. This design eliminates the necessity for a breakout kit, as the sheath allow you to attach connectors easily. It is different from distribution-style cable, in which tight-buffered fibers are bundled together, with only the outer cable jacket of the cable protecting them. The design of breakout-style cable adds strength for ruggedized drops than distribution-style cable. Breakout cable is suitable for short riser and plenum applications and for use in conduits.

A QSFP+ breakout cable consists of a QSFP+ transceiver on one end and four SFP+ transceivers on the other end. The cables are hot-removable and hot-insertable. QSFP+ transceiver connects directly into the QSFP+ access port on the QFX Series device. The cables use high-performance integrated duplex serial data links for bidirectional communication on four links simultaneously. And each SFP+ link is designed for data rates up to 10 Gbps. QSFP+ breakout cables create a great cost-effective interconnect way for IT professionals by giving much needed space for data centers and cost cuts.

Types of QSFP+ Cable

There are many types of QSFP+ cable, here two commonly used kinds of them will be introduced, QSFP+ to 4SFP+ passive breakout copper cable and QSFP+ to 4SFP+ breakout active optical cable.

QSFP+ to 4 SFP+ passive breakout copper cable assemblies allow users to connect equipment with QSFP+ ports configured to work as four SFP+ ports. They offer a cost-effective, low-power option to support flexibility in high-speed data center applications. These high performance direct-attach assemblies support 4 lanes of 10 Gb/s (40Gb/s composite). These cables are the optimum solution for connecting your 40G QSFP+ and 10G SFP+ enabled host adapters, switches and servers without upgrading your entire data center or storage array.

QSFP+ to 4SFP+ breakout active optical cable is a 4×10Gb/s parallel active optical cable which transmits four separate streams of 10Gb/s data over ribbon cables in a point-to-multipoint configuration. It is commonly used for storage, data, and high-performance computing interconnectivity. The following shows a Cisco QSFP-4SFP10G-CU3M compatible QSFP+ to 4SFP+ passive breakout copper cable and a Cisco QSFP-4X10G-AOC10M compatible QSFP+ to 4SFP+ active optical breakout cable.

QSFP+ Breakout Cables

Applications of QSFP+ Cable

QSFP+ cables permit you to connect your QSFP+ and SFP+ switches and network cards without upgrading your entire data center or storage array. 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.

Fiberstore provides QSFP+ to 4SFP+ passive copper breakout DAC, and QSFP+ to 4SFP+ breakout AOC. Custom cables can be found in various lengths along with other options. We currently provide several lengths to support your installation requirements. All our 40GBASE QSFP+ cable are 100% compatible with major brands like Cisco, Juniper and so on.