Lessengers starts production of 800G transceivers

New Products | October 3, 2023

By Nick Flaherty

Optoelectronics

Lessengers in Korea has started production of 800G photonic components based on its patented “direct optical wiring” (DOW) technology.

The 800G OSFP SR8 transceiver will begin volume production in the Q4 2023 and begin shipping to customers says Lessengers.

DOW is a polymer-based air-cladded waveguide technology that is particularly useful for optical interconnects in the data centre and high-performance computing environments. This connects the active photonic devices such as laser diodes or photodiodes directly to the optical fibre, providing high-density and high-speed optical signal connectivity between switches, servers, and other devices within the data centre or HPC clusters.

This means there is no active alignment required and no use of multi-channel lens assembly to reduce the optical crosstalk. No air gap dramatically lowers the reflection noise and the technology enables a high degree of freedom in heat sink design from a lower junction temperature

These attributes make the 800G OSFP SR8 and other products for high-speed active optical cables and transceivers high-performance, highly reliable and cost compelling.

“Demand for optical connectivity in AI Clusters is accelerating innovation,” said Dr. Vladimir Kozlov, CEO and Founder of LightCounting. “New designs of pluggable and co-packaged optical engines rely on high density parallel connectivity, which need new packaging and fiber-coupling methods. Direct optical wiring, developed by Lessengers, is a great example of such new approaches.”

“We are proud to announce the volume production of DOW-based 800G AOCs and transceivers,” said Chongcook Kim, CEO at Lessengers. “The use of DOW technology enables us to achieve high-performance and low-noise optics by its nature allowing us to streamline the production process flow with complete automation.”