中文

GIGALIGHT Returns to the Competition Track of Data Center Passive DAC

Date: 2021-08-30 250 Tags: 400G QSFP-DD PCC , PCC , 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 a global design innovator in the field of optical interconnection hardware, GIGALIGHT integrates the design, manufacturing and sales of active and passive optical components and subsystems, and provides customers with comprehensive and innovatively designed high-speed optical interconnection hardware solutions. The product lines cover optical transceivers, passive optical components, coherent optical modules and subsystems. The key range of services include data centers, 5G bearer networks, metro WDM transmission, ultra-high-definition broadcast video and other application fields.