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Introduction to QSFP+ AOC

Dec 14th 2015 at 11:10 PM

As the requirement of more bandwidth has increased, copper connectivity is becoming less and less attractive due to the bulk of the connectors, cables and reduced distance capability. Under this circumstance, active optical cable (AOC) has emerged, especially for the QSFP+ AOC . This cable assembly and transceiver provide a hot pluggable solution with data rates from 5Gbps up to 10Gbps per channel, which is widely used in fiber optic solutions. Today’s blog will give a brief introduction to QSFP+ AOC.

What Is Active Optical Cable?
Active Optical Cable (AOC) is used for short-range multi-lane data communication and interconnect applications. AOC 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. 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.

QSFP+ Active Optical Cable (AOC) Assemblies
Active optical cable, namely AOC brings a more flexible cabling than direct attach copper cables with the advantages of lighter weigth, longer transmission distance and higher performance for anti-EMI. Now, 40G AOC assemblies are popular with users.

QSFP+ AOC is a high performance integrated cable for short-range multi-lane data communication and interconnect applications. It integrates four data lanes in each direction with 40Gbps aggregate bandwidth. Each lane can operate at 10Gbps with lengths ranging from one to 100m. Fiberstore QSFP+AOC solution is designed for high-density applications. Usually they can be applied in following areas: InfiniBand QDR (4 x 10G), DDR (4 x 5G) and SDR (4 x 2.5G) interconnects, High Performance and High Productivity computer interconnects, Data Aggregation, Backplane and Proprietary Density Applications, PCI-Express, SAS/SATA, Fibre Channel compatible interconnect, Datacom and Telecom switch and router backplane connections.

QSFP to 4 SFP+ Breakout AOC and QSFP to QSFP AOC
In the market, there are two common AOC for 40g Ethernet: QSFP to 4 SFP+ breakout AOC and QSFP to QSFP AOC. The former 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. The cable contains a QSFP+ module on one end and four separate SFP+ modules at the other ends. The latter is a 40Gb/s parallel active optical cable which transmits error-free parallel 4×10Gb/s data over multi-mode fiber (MMF) ribbon cables. The following image shows a 40G-QSFP-4SFP-C-0101 ( right) and 40G-QSFP-C-0501 (left).

QSFP to 4 SFP+ Breakout AOC and QSFP to QSFP AOC

Conclusion
With its benefits, AOC is widely used in many fields as well as promoting the traditional data center to step into optical interconnection. The market of AOCs will keep growing and has a broad prospect. Fiberstore 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 4 SFP+ AOCs, 40G-QSFP-C-0501, QSFP+ to 8 x LC AOCs and 120G CXP AOCs etc. If you have any requirements of these products, please send your inquiry to us.

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