POET Technologies Inc. and Lessengers have announced a joint effort to develop a 1.6‑terabit 2×DR4 optical transceiver module that will be designed for next‑generation AI clusters and hyperscale data‑center networks. The module will combine POET’s wafer‑level integrated lasers, modulators, photodiodes and passive waveguides with Lessengers’ Direct Optical Wiring (DOW) technology, which eliminates the need for lens optics and simplifies optical routing.
The resulting transceiver will deliver 1.6 T of data throughput per channel and is expected to be available in the second quarter of 2026. POET’s optical interposer platform enables seamless integration of electronic and photonic devices on a single chip, while Lessengers’ polymer‑based air‑cladded waveguide technology connects active photonic devices directly to optical fibers, reducing packaging complexity and improving scalability.
The partnership is positioned to capture a growing market for high‑bandwidth links driven by AI workloads. A LightCounting forecast projects 125 million units of 1.6 T DR8 transceivers between 2027 and 2031, and competitors such as Amphenol and Eoptolink are also offering 1.6 T solutions. By combining complementary technologies, POET and Lessengers aim to accelerate time‑to‑market and reduce integration complexity for hyperscale customers.
"AI infrastructure is driving rapid increases in optical bandwidth requirements. By combining POET’s Optical Interposer‑based optical engines with Lessengers’ innovative Direct Optical Wiring technology, we are developing an efficient path toward 1.6T 2×DR4 transceiver modules that can meet the performance, scalability, and integration requirements of next‑generation data‑center architectures," said Raju Kankipati, Chief Revenue Officer of POET.
"Lessengers’ Direct Optical Wiring (DOW) technology was developed to simplify optical connectivity while enabling scalable high‑speed optical interconnects. Integrating our DOW technology with POET’s Optical Interposer platform brings together complementary innovations that support the development of compact, high‑performance 1.6T optical modules for hyperscale and AI networking environments," added Taeyong Kim, Chief Marketing Officer of Lessengers.
The two companies plan to showcase the technology at the 2026 OFC Conference and Exhibition, scheduled March 16‑19 in Los Angeles. The collaboration leverages POET’s wafer‑level manufacturing capabilities and Lessengers’ proven 800 G AOC and transceiver production to create a product that can be integrated into server and switch platforms, potentially reducing cost, power consumption, and size for AI data‑center operators.
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