9 janvier 2019

[Photonics] – Photonic integrated circuits: the future of High-Speed technology?

Accueil / Actualités / [Photonics] – Photonic integrated circuits: the future of High-Speed technology?
Flèche contenu

Integrated circuits are key to modern hardware since its invention by Jack Kilby in 1958. If actual microchips are a set of electronic components on a semiconductor wafer, the same functions can be obtained using light instead of electrons. And benefits of photonic integrated circuits (PICs) are important : higher speed, lower energy loss and a greater bandwidth.

Indium phosphide (InP) is the most mature and high performance PIC platform, and NASA use it for space applications for its reliability. A way of making a PIC with InP is to grow an epitaxial material structure on the InP substrate, for example by MOCVD. In this example, the active region can be made of an InGaAsP multi-quantum well.

(a) Epitaxial structure in the active region; (b) Sideview of the active/passive interface following regrowth Source : Zhao et al. IEEE Journal of Selected Topics in Quantum Electronics ( Volume: 24 , Issue: 6 , Nov.-Dec. 2018 )

(a) Epitaxial structure in the active region; (b) Sideview of the active/passive interface following regrowth
Source : Zhao et al. IEEE Journal of Selected Topics in Quantum Electronics (Volume: 24 , Issue: 6 , Nov.-Dec. 2018)

Découvrez aussi
[Nanotechnology] – Ultra-small nanoprobes could be a leap forward in high-resolution human-machine interfaces 3 août 2019

Machine enhanced humans — or cyborgs as they are known in science fiction — could be one step closer to becoming a reality, thanks to new research Lieber Group at Harvard University, as well as scientists from University of Surrey and Yonsei University.

Lire la suite
[Nano-Sensors] – Highly sensitive sensors show promise in enhancing human touch 21 février 2020

People rely on a highly tuned sense of touch to manipulate objects, but injuries to the skin and the simple act of wearing gloves can impair this ability.

Lire la suite