Paper 13369-97
Paper 13369-97
Passive waveguides and multimode interferometers on InP platform for LWIR free-space optical communications at 9 µm
29 January 2025 • 6:00 PM - 8:00 PM PST | Moscone West, Room 2003 (Level 2)
Abstract
Long-Wave Infrared Free-space optical communications are a foreseen competitors to atmospheric FSO communications established in the telecom C-band, but mature building blocks are still missing to widely trigger their diffusion alongside classical solutions. Here we report the development of LWIR-based passive components realized on the InGaAs/InP material system, which is a promising platform for future integration with active components like quantum cascade lasers and detectors. We discuss the design, fabrication and characterization of ridge waveguides and beam splitters/combiners based on multi-mode interferometer with different input/output architectures (1x2, 2x2 and 2x4) operating at 9 µm wavelength. These preliminary performances indicate high potential for their future integration in a monolithic InP integrated photonic platform for high-speed LWIR FSO datacom.
Presenter
III-V Lab. (France)
Salvatore Pes received the PhD degree in Physics-Optoelectronics from INSA Rennes (France) in 2019. His PhD work involved the development and characterization of 1.55 µm-emitting Vertical-(External)-Cavity Surface-Emitting Lasers integrating low-dimensional quantum nanostructures for microwave applications and coherent communications. Afterwards, he joined CEA-Leti in Grenoble as postdoctoral researcher, where he was involved in the development of high-bandwidth single-photon detectors based on MCT avalanche photodiodes, for applications in long-distance free-space optical communications, quantum optics and astronomy. He is currently a research scientist at III-V Lab, a joint lab between Nokia, Thales and CEA-Leti, where is in charge of the development of mid-infrared quantum devices for free-space optical communications.