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Wideband chaos generation using a VCSEL with intensity modulation optical injection for random number generation

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Conclusion

In conclusion, a scheme for broadband chaos generation is proposed and demonstrated based on a VCSEL with subharmonic modulation optical injection. A 1/2 sub-harmonic modulation signal is injected into the VCSEL to destabilize the P1 state and generate a complex chaos signal with a bandwidth above 20 GHz. Moreover, such a chaos signal has been used as a physical entropy source to produce the physical number. By adopting a 4-LSBs extraction method, we can realize a 320 Gb/s physical number stream with verified randomness. Our scheme may offer a new alternative solution for ultrafast physical number generation using a single VCSEL.

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Acknowledgements

This work was supported in part by National Natural Science Foundation of China (Grant Nos. 62004135, 62001317, 62171305, 62111530301) and Postdoctoral Fellowship Program of CPSF (Grant No. GZC20231883).

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Authors and Affiliations

  1. School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, China

    Yu Huang, Shuangquan Gu, Yuhang Feng, Yigong Yang, Pei Zhou & Nianqiang Li

  2. Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou, 215006, China

    Nianqiang Li

  3. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, 710071, China

    Shuiying Xiang

Authors
  1. Yu Huang
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  2. Shuangquan Gu
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  3. Yuhang Feng
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  4. Yigong Yang
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  5. Shuiying Xiang
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  6. Pei Zhou
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  7. Nianqiang Li
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Corresponding author

Correspondence to Nianqiang Li.

Additional information

Supporting information Appendixes A–D. The supporting information is available online at info.scichina.com and link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

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Huang, Y., Gu, S., Feng, Y. et al. Wideband chaos generation using a VCSEL with intensity modulation optical injection for random number generation. Sci. China Inf. Sci. 67, 169401 (2024). https://doi.org/10.1007/s11432-023-4002-6

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  • DOI: https://doi.org/10.1007/s11432-023-4002-6

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