Optical components provider Lessengers has unveiled a portfolio of 800G optics for AI/ML workloads in hyperscale data centres.
The company said it is adding partially retimed capability to its 800G transceiver product portfolio, integrating a DSP chip on the transmitter side.
The capability will open a range of interoperability with other pluggable transceivers and lower power consumption due to the half retimer.
At OFC 2024 (booth 5200), the company will highlight the launch of its industry-first 800G OSFP Linear Receive Optical Transceiver.
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Lessengers AI/ML product now features the following integrated retimer electronics along with existing fully retimed optics:
- Linear drive - linear pluggable optics (LPO)
- Linear receive - half-retimed linear optics (HALO) or linear receive optics (LRO)
The 800G Linear Receive Optical Transceiver now offers:
- Lower power consumption – less than 9 W for an 800G (2 × SR4) OSFP
- IEEE 802.3 and CMIS 5.0 or later compliant
- 8 × 112 Gb/s PAM4 on both the electrical host receiver and optical line transmitter interfaces
- A half retimer chip integrated in the transmit path from the electrical input to the optical line side output for enhanced signal retiming and equalization.
The products are based on patented DOW technology, a polymer-based air-cladded waveguide technology intended for optical interconnects in a data centre and high-performance computing environments.
“Demand for 800G SR8 transceivers exceeded all expectations in 2023 and more than three million units of these modules will be shipped in 2024,” noted LightCounting Market Research CEO and founder Dr. Vladimir Kozlov.
“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.”
Lessengers is exhibiting at the Optical Fiber Communications Conference (OFC) at the San Diego Convention Centre, 26-28 March 2024 in booth 5200.