Preprint
Sep 2026
Programmable and scalable on-chip WDM processing platform enabled by cascaded FSR-free resonators
Wavelength-division multiplexing (WDM) is pivotal for expanding the capacity and functionality of photonic systems, from communications to computing. However, on-chip implementation for broadband operation is fundamentally limited by the narrow free spectral range (FSR) and inefficient drop transmission of conventional...
Bo-Shu Sun, Hao-Jie Zhu, Ying-Ying Sun et al.
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