Nexilumen, a spin-off from Fudan College, has made new advances in micro-LED optical interconnects, rising complete bandwidth via area division multiplexing (SDM) and wavelength division multiplexing (WDM). The 16-channel micro-LED array achieved a knowledge price of 37 Gbps, and the 5-channel WDM resolution reached a knowledge price density of roughly 201 Gbps/mm².

In SDM, Nexilumen makes use of a 4 × 4 inexperienced micro-LED array that integrates 16 independently pushed pixels. Every pixel delivers a median knowledge price of roughly 2.3 Gbps, and all 16 channels function concurrently for a complete knowledge price of 37 Gbps. The corporate mentioned its workforce is growing a communication system with tons of of channels.

For the WDM, Nexilumen built-in purple, blue, and inexperienced InGaN micro-LEDs together with yellow and crimson hybrid micro-LED/quantum dot pixels on a single silicon substrate. The 320 × 290 μm space accommodates 5 independently pushed wavelength channels. By transmitting impartial alerts at totally different wavelengths via the identical optical path, the system achieved a knowledge price of 18.66 Gbps throughout 5 channels. This corresponds to a knowledge price density of roughly 201 Gbps/mm² based mostly on the entire emitter chip space.

In one other research beforehand printed in Nature Communications, Nexilumen demonstrated transmitter vitality effectivity of 0.056 pJ/bit at a communication pace of 1.5 Gbps by optimizing communication hyperlinks and algorithms.

At CIOE 2026, Nexilumen additionally launched advances in long-wavelength InGaN micro-LEDs, 405 nm high-speed mild sources, and multichannel parallel optical hyperlinks. The long-wavelength machine achieved an electro-optic modulation bandwidth of two.85 GHz at a present density of 6.25 A/cm2, and the 405 nm mild supply maintained a modulation bandwidth of greater than 3 GHz over all the working present vary.

Nexilumen relies on collaborative analysis between Professor Tian Pengfei’s workforce at Fudan College and Professor Shen Bo’s workforce at Peking College. Earlier demonstrations by the workforce achieved communication speeds of over 10 Gbps on a single blue micro-LED and 9 Gbps on a inexperienced machine, whereas concurrently reaching multichannel system validation of 20 Gbps on two channels and 37 Gbps on 16 channels.

In July 2026, Nexilumen introduced the completion of a seed funding spherical value tens of thousands and thousands of RMB collectively supported by Fudan Innovation and Furuong Funding.

The corporate is presently working to translate laboratory analysis into engineering purposes, specializing in micro-LED mild sources, drivers, and system options for short-range interconnects reminiscent of co-packaged optics (CPO) and chip-to-chip optical I/O. We additionally plan to develop and confirm a prototype optical interconnect system concentrating on 1.6Tbps.

(Picture courtesy of Nexilumen)

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