Reflectionless Optical Routing via Zero-Index Networks
Published:Dec 26, 2025 08:44
•1 min read
•ArXiv
Analysis
This paper introduces an analytical inverse-design approach for creating optical routers that avoid unwanted reflections and offer flexible functionality. The key innovation is the use of non-Hermitian zero-index networks, which allows for direct algebraic mapping between desired routing behavior and physical parameters, eliminating the need for computationally expensive iterative optimization. This provides a systematic and analytical method for designing advanced light-control devices.
Key Takeaways
- •Presents an analytical inverse-design approach for reflectionless optical routing.
- •Utilizes non-Hermitian zero-index networks for arbitrary routing.
- •Transforms design from iterative optimization to deterministic calculation.
- •Demonstrates utility with various device designs (unicast/multicast routers, beam combiners, demultiplexers).
Reference
“By establishing a direct algebraic mapping between target scattering responses and the network's physical parameters, we transform the design process from iterative optimization into deterministic calculation.”