HIRO

Rising data traffic and increasing connectivity demands are driving the quest for new approaches that push optical communication systems beyond the inherent capacity boundaries of single-mode transmission links. To realize this vision, HIRO explores an innovative network architecture that unifies multi-core and multi-mode fiber technologies within a single, flexible infrastructure.

This research focuses on the development of advanced optical fibers, amplifiers, as well as the integration of a spatial multiplexer capable of dynamically switching optical signals between heterogeneous fiber channels. By enabling seamless coupling across different fiber formats with minimal loss, this project aims to establish the foundation for next-generation high-speed optical networks.

In close collaboration with the project partners from Fraunhofer Institute for Applied Optics and Precision Engineering (IOF), HoloEye Photonics, j-Fiber, and TBT Tiefbohrtechnik; INT is pursuing both technological innovation and experimental validation.

INT has successfully implemented the Multi-Plane Light Conversion (MPLC) approach to realize a 3-mode multiplexer directly fabricated through 3D printing on a multi-core fiber facet. This device enables the conversion of fundamental Gaussian modes into higher-order spatial modes suitable for propagation within Few-Mode Fibers (FMFs). The ongoing research aims to design and evaluate various MPLC-based mode-conversion strategies, optimizing both their optical performance and fabrication feasibility. Building upon this finding, future work will focus on developing seamless coupling strategies and extending the concept to support a larger set of spatial modes, thereby enhancing mode diversity and system scalability.

Beyond device development and for the validation of the designs, the project also plans to develop an experimental transmission setup to assess signal integrity, data throughput, and system scalability, paving a way for flexible, high-capacity communication networks for the future.