19May, 2023
    GIGALIGHT Launches 800G QSFP-DD ACC to Faciliate HPC Data Center and AI High Computational Applications

    Shenzhen, China, May 19, 2023 – High-speed copper cable products have natural advantages in cost, power consumption, transmission delay, and failure rate, while active copper cable (ACC) further extends the transmission distance of passive copper cable products. Today, GIGALIGHT launched its first 800G active copper cable product – 800G QSFP-DD ACC, which helps high-speed data centers and AI high-computational applications.

    GIGALIGHT 800G QSFP-DD ACC follows the QSFP-DD800 MSA and IEEE802.3ck specifications, using 16 pairs of copper cables to support bidirectional transmission of 8 channels at a rate of 112GB/s. Compared to the 2m maximum transmission distance of the 800G QSFP-DD PCC, the ACC extends up to 4m, which meets the cabling needs of typical data center short distance interconnects.
    The products features are as follows,

    • Shows superior SI performance and excellent consistency in 44GHZ network splitting
    • Tested on an 800G network tester with KP4-FEC enabled, it meets the IEEE Auto-Negotiation and Link Training requirements, with a Post-FEC BER <1E-15 and an FEC margin of more than 27%. The entire process FEC Frame Loss Ratio is 0.
    • The product adopts a Re-Driver scheme, with the power consumption of about 2.5W and the latency less than 20ns. Balance and signal-to-noise ratio balance are crucial, and the power consumption and delay are far superior to the Re-Timer scheme.
    • Utilizing innovative production technology ensures good reliability, and the 800G QSFP-DD ACC 26AWG 4m weighs only about 600g.

    GIGALIGHT has now fully opened the 200G/400G/800G QSFP-DD series ACC product samples and plans to launch the OSFP series passive and active copper cable products in the second half of the year. Stay tuned for more updates!

    About GIGALIGHT

    As an open optical network device explorer, GIGALIGHT integrates the design, manufacturing, and sales of active and passive optical devices and subsystems. Its products mainly include optical modules, silicon photonics modules, liquid-cooled modules, passive optical components, active optical cables, direct attach copper cables, coherent optical communication modules, and OPEN DCI BOX subsystems. GIGALIGHT focuses on serving applications such as data centers, 5G transport networks, metropolitan wavelength division multiplexing (WDM) transmission, and ultra-high-definition broadcasting and video. It is an innovative high-speed optical interconnect hardware solutions provider.

    30Aug, 2021
    GIGALIGHT Returns to the Competition Track of Data Center Passive DAC
    Shenzhen, China, August 30, 2021 − GIGALIGHT’s today launched an 8-channel 400G QSFP56-DD passive direct-attached cable (PCC) assembly that supports 3m transmission, marking its successful return to the technology track of DAC products.
    The newly developed 400G QSFP56-DD PCC assembly can reach a maximum transmission distance of 3m, the insertion loss is better than 17.16dB@13.28GHz, the Pre-FEC bit error ration is better than average 1E-8, and the Post -FEC bit error ration is better than 1E-14 level, showing superior consistency of each channel.
    (Partial testing diagram of 400G DACs)
    Case A CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
    PreBER 1.02E-08 4.79E-08 3.65E-08 9.09E-09 2.11E-08 8.39E-09 7.56E-08 5.03E-07
    PostBER 0 0 0 0 0 0 0 0
    Margin 71 43 43 43 57 71 57 43
    Table ：400G QSFP56-DD 3m DAC Case A
    Case B CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
    PreBER 2.26E-09 9.72E-09 2.88E-09 1.30E-08 1.82E-08 2.68E-09 1.99E-08 2.72E-07
    PostBER 0 0 0 0 0 0 0 0
    Margin 71 71 57 43 71 71 71 57
    Table 2：400G QSFP56-DD 3m DAC Case B
    GIGALIGHT has started the R&D and production of passive DAC assemblies since 2011 and gained a large amount of customers of Passive DAC products worldwide. Through 10 years of technological innovation and practice, the company has completely solved the compliance problem of COM computing software & hardware and protocols, and has endowed high-density DACs with a set of efficient and reliable manufacturability procedures.
    Over the years of R & D, GIGALIGHT has a complete family of DAC and its branch products:
    Product name Protocol Maximum insertion loss Transmission distance
    10G SFP+ PCC IEEE 802.3ae 17.04dB@5.16GHz 7m
    25G SFP28 PCC IEEE 802.3by 22.48dB@12.89GHz 5m
    40G QSFP PCC IEEE 802.3ba 17.04dB@5.16GHz 5m
    100G QSFP28 PCC IEEE 802.3bj 22.48dB@12.89GHz 5m
    200G QSFP56 PCC IEEE 802.3cd 17.16dB@13.26GHz 3m
    400G QSFP-DD PCC IEEE 802.3cd 17.16dB@13.26GHz 3m
    Table 3: GIGALIGHT DAC and branch product family

    About GIGALIGHT

    As the open optical network device explorer, GIGALIGHT integrates the design, manufacture and sales of active & passive optical devices and subsystems. The main products are optical transceivers, silicon photonics transceivers, liquid cooling transceivers, optical passive components, AOC & DAC, coherent optical modules and open DCI BOX subsystems. GIGALIGHT is a hardware solution provider of innovatively designed high-speed optical interconnection that focuses on data center, 5G carrier network, metro WDM transmission, UHD broadcast video and other application fields.