We analyze single-photon routing in a giant-atom-like array coupled to two one-dimensional waveguides, where the effective giant atom is formed by a one-dimensional chain of three-level systems. In the regime of strong atom-waveguide coupling and weak interatomic interactions, the device functions as an efficient and directionally controllable router. Routing is governed by interference controlled by an effective phase accumulated between distant coupling points, and can be tuned by the number of coupling sites $N$, the photon energy $E$, and the interatomic coupling strength $J$. We identify regimes with near-unity transfer (up to $100\%$) sustained over a broad energy window, enabling broadband operation and dynamic control of the output channel. We further assess robustness against parameter variations and discuss scalability with $N$. These results highlight the potential of this platform for reconfigurable and integrated quantum photonic networks.

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• Optics & lasers
• Photonics
• Quantum communication
• Quantum optics
• Waveguide arrays
• Optical materials & elements
• Waveguides