Free Space Data Transmission at 9 µm Wavelength With Unipolar Quantum Optoelectronics

Frédéric Grillot, Carlo Sirtori, Olivier Spitz, and colleagues present a high frequency Stark effect modulator which writes data-bits on a laser beam by shifting the absorption of an optical transition in and out of the laser frequency.

Paired with a quantum cascade detector they form a free space optical link allowing for 10Gbit s−1 data transmission at room temperature before any equalization.

Among the authors:

Frédéric Grillot is Professor at Télécom Paris and at the University of New Mexico (USA). He was also a Visiting Professor at the University of California Los Angeles (UCLA) where he taught laser dynamics and quantum mechanics. His current research focuses on photonics and quantum technologies for optical communications.

Olivier Spitz received his Ph.D. in 2019 from Télécom Paris, where he was then a postdoctoral researcher until September 2021. He is now a postdoctoral associate in the applied physics department at Yale University. He was awarded the Springer-Nature thesis award and the DGA thesis award for his work on novel applications for mid-infrared quantum cascade lasers.