What Factors ShouldWhat Factors Should Be Considered in Choosing a Cost-effective Active Optical Cable?
active optical cable, short for AOC, is composed of multimode optical fiber, optical transceiver, control chip and parallel optical module. Both of the optical transceiver at each end provide photoelectric conversion and optical transmission functions to increase the transmission speed and transmission distance of the optical cable without weakening the compatibility with the standard electrical interface. It is mainly used in short-distance, multi-channel data communication applications.
1. The necessity to use active optical cable (AOC)
People use active optical cables mainly to replace copper cables in data centers and high-performance computing (HPC) applications.
As far as we know, passive copper cables are heavy and bulky, and do not meet the high-density requirements of data centers. Moreover, due to the nature of electrical signals, electromagnetic interference (EMI) limits the performance and reliability of copper. However, active optical cables break through the limitations of passive optical cables and play an important role in high-speed data transmission.
2. The advantages of active optical cables
What factors should be considered when choosing a cost-effective active optical cable (AOC)? This is a concern of many people. Wish the following analysis may help you.
(1) AOC connection port
When choosing AOC, we should first determine whether the optical port of the device is SFP+ or QSFP+.
(2) The type and rate of data transmitted
AOC is suitable for Ethernet switch, LAN: 1G 10G 40G Ethernet;
Storage service, SAN: 1G 2G 4G 8G Fiber Channel;
Infini Band switch, Infini Band: SDR DDR QDR (2G 5G 10G).
3. Transmission distance
For Ethernet services, 10G SFP+ AOC and 40G QSFP+ AOC, transmitting distance is within 20m via OM2, while via OM3 optical cables, distance is up to 300m.
For storage services, 10G SFP+ AOC uses OM3 optical cables, which can realize the 4G service transmission distance of 380m, and the 8G service transmission distance of 150m.
4. Quality Assurance
Common brands of AOCs are H3C, Cisco, etc., and the original factory prices are prohibitively high. At the same time, there is a mixture of good and bad products in the market, with many outdated goods and even fake goods. Thus, it is particularly important to choose a strong brand manufacturer.
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What are the Categories of QSFP+ AOC?
Active optical cables can be classified into various types according to different specifications and speeds, such as 200G QSFP-DD AOC, 100G/50G QSFP28 AOC, 56G/40G QSFP AOC, SFP28 AOC, and so on. So, what are their characteristics and what are their categories? This article will give a detailed introduction to QSFP+ AOC and its categories.
What Are the Advantages of Direct Attach Cable Over Active Optical Cable?
In recent years, with the rapid development of data centers and increasing data transmission among manufacturers and users, the rates of optical transceivers have evolved from 25G and 40G to the current 100G, 200G, etc. Correspondingly, AOC has been developed to a new level.However, why can direct attach cables still develop in the market when AOC has such huge advantages?
Why Use Active Optical Cable?
Active optical cable, also known as AOC, AOC is the abbreviation of Active Optical Fiber. At one end of the active optical cable, the data is input into an electrical signal, and the electrical signal is converted into an optical signal of a specific wavelength through a photoelectric conversion device.
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