Programmable ultra-broadband photonic chaos platform enabled by microwave-chaos-driven electro-optic frequency combs
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arXiv
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| Format: | Preprint |
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2026
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| author | Shi, Shiyu Zhang, Yiqun Zhou, Mengjie Xu, Mingfeng Yan, Xianglei Chen, Qiang Yang, Yunxia Guo, Yinghui Pu, Mingbo Luo, Xiangang |
| author_facet | Shi, Shiyu Zhang, Yiqun Zhou, Mengjie Xu, Mingfeng Yan, Xianglei Chen, Qiang Yang, Yunxia Guo, Yinghui Pu, Mingbo Luo, Xiangang |
| contents | Optical chaos holds great promise for secure communication, LiDAR, and reinforcement learning. However, its scalability has long been constrained by an intrinsic trade-off between bandwidth and the number of parallel chaotic channels. Here, we introduce a programmable "chaos-on-comb" architecture that overcomes this limitation using standard electro-optic components. By heterodyning a delayed-feedback chaotic laser with a continuous-wave reference, a broadband chaotic microwave signal is generated to simultaneously drive a cascaded electro-optic comb, imprinting chaotic dynamics across all comb lines and merging them into an ultra-broadband chaotic continuum. Then, incorporating spectrum slicing enables flexible extraction of parallel chaotic channels with preserved statistical independence and per-channel programmability. As a result, we demonstrate a single-channel ultra-broadband optical chaos with an effective bandwidth of 543.8 GHz, and a broadband terahertz noise source with an excess noise ratio of 52.99 \pm 2.85 dB to validate its flatness. Furthermore, we employ the uncorrelated parallel chaos for ultrafast photonic decision-making in a 256-armed bandit problem, achieving a favourable power-law scaling exponent of 0.86. Our work paves the way toward programmable, reconfigurable, and application-ready photonic chaos systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_01440 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Programmable ultra-broadband photonic chaos platform enabled by microwave-chaos-driven electro-optic frequency combs Shi, Shiyu Zhang, Yiqun Zhou, Mengjie Xu, Mingfeng Yan, Xianglei Chen, Qiang Yang, Yunxia Guo, Yinghui Pu, Mingbo Luo, Xiangang Optics Chaotic Dynamics Optical chaos holds great promise for secure communication, LiDAR, and reinforcement learning. However, its scalability has long been constrained by an intrinsic trade-off between bandwidth and the number of parallel chaotic channels. Here, we introduce a programmable "chaos-on-comb" architecture that overcomes this limitation using standard electro-optic components. By heterodyning a delayed-feedback chaotic laser with a continuous-wave reference, a broadband chaotic microwave signal is generated to simultaneously drive a cascaded electro-optic comb, imprinting chaotic dynamics across all comb lines and merging them into an ultra-broadband chaotic continuum. Then, incorporating spectrum slicing enables flexible extraction of parallel chaotic channels with preserved statistical independence and per-channel programmability. As a result, we demonstrate a single-channel ultra-broadband optical chaos with an effective bandwidth of 543.8 GHz, and a broadband terahertz noise source with an excess noise ratio of 52.99 \pm 2.85 dB to validate its flatness. Furthermore, we employ the uncorrelated parallel chaos for ultrafast photonic decision-making in a 256-armed bandit problem, achieving a favourable power-law scaling exponent of 0.86. Our work paves the way toward programmable, reconfigurable, and application-ready photonic chaos systems. |
| title | Programmable ultra-broadband photonic chaos platform enabled by microwave-chaos-driven electro-optic frequency combs |
| topic | Optics Chaotic Dynamics |
| url | https://arxiv.org/abs/2601.01440 |