OAM Devices: Main Achievements
The ambitious goals of the ROAM projects build on the extreme compactness offered by silicon photonic integration.
The integrated devices are based on a simple micro-ring resonator geometry with integrated Bragg grating,
that provide compactness and flexibility compared to the state of the art free-space bulk components.
The chips are designed and fabricated by the James Watt Nanofabrication Centre at the University of Glasgow,
with contributions from the University of Bristol in the design and assessment and CNIT in the packaging and system evaluation.
Multi OAM integrated emitters
A main objective of the project was on the development of a chip for multi-OAM beam emission.
This was accomplished by super-imposing several gratings on the same micro-ring resonator, each optimised for the emission of a single OAM mode.
In this configuration, multiple OAM beams are emitted simultaneously from the same micro-ring. Devices emitting up to 8 OAM modes have been fabricated
and tested by the Consortium as part of the optical switch activity in WP6.
Output from IPGIF: