Avicena, a developer of microLED-based chip-to-chip interconnects, announced that its LightBundle microLED-based links now operate at 4Gbps per lane with transmitter currents as low as 100µA per LED. At this current, each link closes at a raw BER of 1×10-12 with an equivalent energy of 80fJ/bit per LED, all without Forward Error Correction (FEC).
The company says that this new power-per-lane milestone was enabled by a new high-sensitivity receiver technology, developed in collaboration with the company's manufacturing partners and incorporating optimized photodetectors derived from high-volume image-sensor processes.
In September 2025, Avicena has demonstrated a fully operational microLED-based optical link operating at an industry-leading Tx power of 200 femtojoules per bit (fJ/bit) at <1E-12 raw bit error rate.
In May 2025, Avicena announced that it has secured its Series B funding round, raising $65 million. Avicena raised a total of $120 million to date.
Earlier in 2025, Avicena launched its scalable and modular LightBundle interconnect platform, that supports > 1Tbps/mm shoreline density and extends ultra-high density die-to-die (D2D) connections to > 10 meters at class leading sub-pJ/bit energy efficiency.
Avicena, a developer of microLED-based chip-to-chip interconnects, recently discussed its microLED-based solution, as you can see in the video above.
In 2022 the company acquired Nanosys' GaN microLED fab and engineering team. Avicena uses the fab and team to develop and produce high-speed GaN microLEDs optimized for its application.
The GaN microLED fab was previously owned by glō (before it was acquired by Nanosys), which invested over $200 million in the facilities, which include epitaxy, wafer processing, and lift-off and transfer tools to post-process silicon ICs with optical interfaces.
