Resistance Is Futile

It has been known for more than 30 years that optical interconnects could consume significantly less power than electrical interconnects even for sub-1 cm lengths. In order to realize practical short optical interconnects, one of the ”holy grails” has been an optical emitter that is “impedance-matched” to electronics, operating at low currents, able to withstand high temperatures, and with yields and reliability numbers that match those of transistors. These devices could form 3-dimensional interconnects and free electronics from the fundamental limits of capacitance and resistance.  Vertical cavity lasers, modulators and even silicon photonics have fallen shorts of these requirements.  Avicena’s new CROMEs (Cavity-Reinforced Optical Micro-Emitters) are based on microLEDs from the display industry and leverage the display infra-structure.  Operating at speeds up to 10Gb/s, they can form large arrays and optically connect ICs at very high density and low power consumption.