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Lessengers announces portfolio of 800G optics for AI/ML


The company will unveil its products at OFC 2024 in San Diego, highlighting its partially retimed 800G optical transceivers, which it says are an industry first

Lessengers, a provider of optical components based on its patented “direct optical wiring” (DOW) technology, has announced a comprehensive portfolio of 800G optics designed for AI/ML workloads in hyperscale datacentres. The company says it is adding partially retimed capability to its 800G transceiver product portfolio, which in one product entails an integrated DSP chip on the transmitter side.

According to Lessengers, this capability will enable a wide range of interoperability with other pluggable transceivers and lower power consumption due to the use of a half retimer. At OFC 2024, the company will highlight the launch of its 800G OSFP Linear Receive Optical Transceiver, which it says is an industry first.

Alongside existing fully retimed optics, Lessengers AI/ML product now features the following integrated retimer electronics: linear drive – linear pluggable optics (LPO) – and linear receive – half-retimed linear optics (HALO) or linear receive optics (LRO).

The 800G Linear Receive Optical Transceiver now offers: lower power consumption of less than 9 W for an 800G (2 × SR4) OSFP; 8 × 112G PAM-4 on both the electrical host receiver and optical line transmitter interfaces; and a half retimer chip integrated in the transmit path from the electrical input to the optical line side output for enhanced signal retiming and equalisation. It is also compliant with IEEE 802.3 and CMIS 5.0 or later.

All of Lessengers’ products are based on the company’s patented DOW technology, which is a polymer-based air-cladded waveguide technology that is particularly useful for optical interconnects in the datacentre and high-performance computing environments.

“Demand for 800G SR8 transceivers exceeded all expectations in 2023 and more than 3 million units of these modules will be shipped in 2024,” commented Vladimir Kozlov, CEO and founder of LightCounting Market Research. “Improvements in power efficiency of optical transceivers are critical for scaling AI clusters from tens of thousands of GPUs now to hundreds of thousands in 2025-2026. All solutions, including LPO and HALO designs, are being evaluated by the leading customers for future deployments.”

Chongcook Kim, CEO at Lessengers, said: “We are excited to demonstrate at OFC our latest advances in the field of 800G optics, which will be crucial to improving the processing of AI/ML workloads. We look forward to working with our partners and customers throughout the hyperscale and supercomputing ecosystems in order to realise these gains.”

Image credit: Lessengers

Lessengers announces portfolio of 800G optics for AI/ML
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