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Yinjun Liu

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Open access Aug 2026

A broadband lithium tantalate-on-silicon nitride heterogeneous modulator for optical and terahertz communications and radar sensing

Photonic integrated circuits have driven advances in optical interconnects, wireless communications, seamless sensing. Electro-optic modulators, which bridge the electronic and optical domains, act as the cornerstone of these systems. To address the ultra-broadband demands of next-generation information systems while e...

Jin-Wei Su, Yu-Qin Yuan, Yi-Qi Dai et al. · 3 citations
2026

Advancing End-to-End Communication Systems With Physics-Aware Learning

The advent of neural network (NN)-based autoencoders has enabled joint transceiver optimization via end-to-end (E2E) learning. However, most existing approaches rely on differentiable surrogate channel models, leading to performance mismatch when deployed over real-world channels. Emerging model-free variants alleviate...

Yuan Wei, Chao-Xu Chen, Li Yao et al. · 0 citations
2026

Reinforcement Learning-Guided Transmitter Optimization for Short-Reach IM/DD FSO Systems

We propose a reinforcement-learning (RL) guided transmitter optimization framework for short-reach IM/DD free-space optical (FSO) links that jointly tunes probabilistic shaping (PS), geometric shaping (GS), and pre-equalization (Pre-EQ) filter coefficients using the soft actor-critic (SAC) algorithm. The agent adapts t...

Ouhan Huang, Junhao Zhao, Yinjun Liu et al. · 0 citations

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