Hisense Broadband unveils 800G linear drive Optical Direct Attach Cable for AI/ML networks

March 7, 2023
The Optical Direct Attach Cable (oDAC) offers 100 Gbps per lane while obviating the need for a DSP and CDR, thus reducing cost, latency, and power consumption.

Hisense Broadband Multimedia Technology Co., Ltd. is using this week’s OFC 2023 conference and exhibition in San Diego to debut an 800G linear driver optical cable for use in AI/ML applications. The Optical Direct Attach Cable (oDAC) offers 100 Gbps per lane while obviating the need for a DSP and CDR, thus reducing cost, latency, and power consumption.

The oDAC can be used in ways similar to a direct attach cable (DAC) but will provide longer reach than its copper-based counterpart. HiSense Broadband complements the benefits of linear drive with an optimized transmitter and receiver optical platform that minimizes reflection and improves system linearity via its signal integrity design. The oDAC demonstrates a power consumption as low as 4 W per 800G OSFP end, according to the company.

By leveraging the increasingly powerful equalization and compensation capabilities of the switch, HiSense Broadband says that it has demonstrated 5e-7 pre-FEC BER floor over 50-m OM4 multimode fiber with ~10-dB channel loss. Further, no uncorrectable post-FEC error was observed after a 24-hour traffic test.

HiSense Broadband will display the oDAC, its newly announced 800-Gbps bidirectional (BiDi) QSFP-DD SR4.2 optical transceiver, and other products at OFC March 7-9 in Booth 6116.

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About the Author

Stephen Hardy | Editorial Director and Associate Publisher, Lightwave

Stephen Hardy is editorial director and associate publisher of Lightwave and Broadband Technology Report, part of the Lighting & Technology Group at Endeavor Business Media. Stephen is responsible for establishing and executing editorial strategy across the both brands’ websites, email newsletters, events, and other information products. He has covered the fiber-optics space for more than 20 years, and communications and technology for more than 35 years. During his tenure, Lightwave has received awards from Folio: and the American Society of Business Press Editors (ASBPE) for editorial excellence. Prior to joining Lightwave in 1997, Stephen worked for Telecommunications magazine and the Journal of Electronic Defense.

Stephen has moderated panels at numerous events, including the Optica Executive Forum, ECOC, and SCTE Cable-Tec Expo. He also is program director for the Lightwave Innovation Reviews and the Diamond Technology Reviews.

He has written numerous articles in all aspects of optical communications and fiber-optic networks, including fiber to the home (FTTH), PON, optical components, DWDM, fiber cables, packet optical transport, optical transceivers, lasers, fiber optic testing, and more.

You can connect with Stephen on LinkedIn as well as Twitter.

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