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Single-chip silicon photonic engine for analog optical and microwave signals processing

Hong Deng, Jing Zhang (UGent) , Emadreza Soltanian (UGent) , Xiangfeng Chen (UGent) , Chao Pang (UGent) , Nicolas Vaissiere, Delphine Neel, Joan Ramirez, Jean Decobert, Nishant Singh (UGent) , et al.
(2025) NATURE COMMUNICATIONS. 16(1).
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Abstract
We present a photonic engine that processes both optical and microwave signals, and can convert signals between the two domains. Our photonic chip, fabricated in IMEC's iSiPP50G silicon photonics process, is capable of both generation and detection of analog electrical and optical signals, and can program user-defined filter responses in both domains. This single chip integrates all essential photonic integrated components like modulators, optical filters, and photodetectors, as well as tunable lasers enabled by transfer-printed indium phosphide optical amplifiers. This makes it possible to operate the chip as a black-box microwave photonics processor, where the user can process high-frequency microwave signals without being exposed to inner optical operation of the chip. The system's configuration is locally programmed through thermo-optic phase shifters and monitored by photodetectors, and can select any combination of optical or microwave inputs and outputs. We construct multiple systems with this engine to demonstrate its capabilities for different RF and optical signal processing functions, including optical and RF signal generation and filtering. This represents a key step towards compact and affordable microwave photonic systems that can enable higher-speed wireless communication networks and low-cost microwave sensing applications.
Keywords
HIGH-SPEED, BAND, TIME

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MLA
Deng, Hong, et al. “Single-Chip Silicon Photonic Engine for Analog Optical and Microwave Signals Processing.” NATURE COMMUNICATIONS, vol. 16, no. 1, 2025, doi:10.1038/s41467-025-60100-0.
APA
Deng, H., Zhang, J., Soltanian, E., Chen, X., Pang, C., Vaissiere, N., … Bogaerts, W. (2025). Single-chip silicon photonic engine for analog optical and microwave signals processing. NATURE COMMUNICATIONS, 16(1). https://doi.org/10.1038/s41467-025-60100-0
Chicago author-date
Deng, Hong, Jing Zhang, Emadreza Soltanian, Xiangfeng Chen, Chao Pang, Nicolas Vaissiere, Delphine Neel, et al. 2025. “Single-Chip Silicon Photonic Engine for Analog Optical and Microwave Signals Processing.” NATURE COMMUNICATIONS 16 (1). https://doi.org/10.1038/s41467-025-60100-0.
Chicago author-date (all authors)
Deng, Hong, Jing Zhang, Emadreza Soltanian, Xiangfeng Chen, Chao Pang, Nicolas Vaissiere, Delphine Neel, Joan Ramirez, Jean Decobert, Nishant Singh, Guy Torfs, Günther Roelkens, and Wim Bogaerts. 2025. “Single-Chip Silicon Photonic Engine for Analog Optical and Microwave Signals Processing.” NATURE COMMUNICATIONS 16 (1). doi:10.1038/s41467-025-60100-0.
Vancouver
1.
Deng H, Zhang J, Soltanian E, Chen X, Pang C, Vaissiere N, et al. Single-chip silicon photonic engine for analog optical and microwave signals processing. NATURE COMMUNICATIONS. 2025;16(1).
IEEE
[1]
H. Deng et al., “Single-chip silicon photonic engine for analog optical and microwave signals processing,” NATURE COMMUNICATIONS, vol. 16, no. 1, 2025.
@article{01JXCWK7XBP2Y00NHNYMSZDC4M,
  abstract     = {{We present a photonic engine that processes both optical and microwave signals, and can convert signals between the two domains. Our photonic chip, fabricated in IMEC's iSiPP50G silicon photonics process, is capable of both generation and detection of analog electrical and optical signals, and can program user-defined filter responses in both domains. This single chip integrates all essential photonic integrated components like modulators, optical filters, and photodetectors, as well as tunable lasers enabled by transfer-printed indium phosphide optical amplifiers. This makes it possible to operate the chip as a black-box microwave photonics processor, where the user can process high-frequency microwave signals without being exposed to inner optical operation of the chip. The system's configuration is locally programmed through thermo-optic phase shifters and monitored by photodetectors, and can select any combination of optical or microwave inputs and outputs. We construct multiple systems with this engine to demonstrate its capabilities for different RF and optical signal processing functions, including optical and RF signal generation and filtering. This represents a key step towards compact and affordable microwave photonic systems that can enable higher-speed wireless communication networks and low-cost microwave sensing applications.}},
  articleno    = {{5087}},
  author       = {{Deng, Hong and Zhang, Jing and Soltanian, Emadreza and Chen, Xiangfeng and Pang, Chao and Vaissiere, Nicolas and Neel, Delphine and Ramirez, Joan and Decobert, Jean and Singh, Nishant and Torfs, Guy and Roelkens, Günther and Bogaerts, Wim}},
  issn         = {{2041-1723}},
  journal      = {{NATURE COMMUNICATIONS}},
  keywords     = {{HIGH-SPEED,BAND,TIME}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{10}},
  title        = {{Single-chip silicon photonic engine for analog optical and microwave signals processing}},
  url          = {{http://doi.org/10.1038/s41467-025-60100-0}},
  volume       = {{16}},
  year         = {{2025}},
}
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