Fast Physical Random Bit Generation Based on a Broadband Chaotic Entropy Source Originated From a Filtered Feedback WRC-FPLD

Tang, Xi; Xia, Guang-Qiong; Ran, Can; Deng, Tao; Lin, Xiaohui; Fan, Li; Gao, Ziye; Lin, Gong‐Ru; Wu, Zheng-Mao

doi:10.1109/jphot.2019.2903535

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…As is well known, chaotic laser signals are highly sensitive to system initial conditions and external disturbances, exhibiting a high degree of randomness. Currently, they are widely applied in various fields such as chaotic laser radar, physical random numbers, chaotic neural networks, image recognition and encryption and optical reservoir computing [1][2][3][4][5][6][7][8]. Moreover, they also have potential applications in chaos computing.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Optical Chaotic Data Selection Logic Operations with the Performance of Error Detection and Correction

Xu,

Wang,

et al. 2024

Photonics

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Based on the chaotic polarization system of optically injected cascaded vertical-cavity surface-emitting lasers (VCSELs), we propose a novel implementation scheme for high-speed optical chaotic data selection logic operations. Under the condition where the slave VCSEL (S-VCSEL) outputs a chaotic laser signal, we calculate the range of the applied electric field and the optical injection amplitude. We also investigate the evolution of the correlation characteristics between the polarized light output from the periodic poled LiNbO3 (PPLN) and the S-VCSEL as a function of the optical injection amplitude under different applied electric fields. Furthermore, we analyze the polarization bistability of the polarized light from the PPLN and S-VCSEL. Based on these results, we modulate the optical injection amplitude as the logic input and the applied electric field as the control logic signal. Using a mean comparison mechanism, we demodulate the polarized light from the PPLN and S-VCSEL to obtain two identical logic outputs, achieving optical chaotic data selection logic operations with an operation speed of approximately 114 Gb/s. Finally, we investigate the influence of noise on the logic outputs and find that both logic outputs do not show any error symbols under the noise strength as high as 180 dBw. The anti-noise performance of logic output O1 is superior to that of optical chaotic logic output O2. For noise strengths up to 185 dBw, error symbols in O2 can be detected and corrected by comparison with O1.

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Section: Introductionmentioning

confidence: 99%

High-Speed Optical Chaotic Data Selection Logic Operations with the Performance of Error Detection and Correction

Xu,

Wang,

et al. 2024

Photonics

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“…Optical chaos is one of the many dynamic characteristics of lasers. It is widely used in optical communication 1,2 , laser radar 3,4 , physical random number generation 5,6 , reservoir computing 7 and other fields. However, there are two problems in the practical application of laser chaotic signal.…”

Section: Introductionmentioning

confidence: 99%

A scheme for broadband multi-channel chaotic signals generation

Yin,

Wang,

et al. 2023

Semiconductor Lasers and Applications XIII

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We propose and experimentally demonstrate a wideband multi-channel chaotic source using a Weak Resonator Cavity Fabry-Perot Laser Diode (WRC-FPLD) with Self-Phase Modulated Optical Feedback (SPMOF), in which, phase modulation is introduced into the external optical feedback loop to improve the bandwidth of the generated multi-channel chaotic signals. The experimental results show that under appropriate optical feedback intensity, WRC-FPLD with SPMOF can generate wideband multi-channel chaotic signals, when the feedback intensity is in the range of -45 dB to -15 dB, the lasing modes in the range of 1530 nm to 1570 nm can be simultaneously driven into chaos state. In addition, the Time Delay Signature (TDS) characteristics of the generated multi-channel chaotic signals are also investigated. To highlight the advantages of the proposed scheme, we also conducted comparative experiments on the conventional optical feedback scheme without phase modulation. Using SPMOF scheme, the obtained bandwidth of multi-channel chaotic signals is improved obviously, the standard bandwidth reaches 11.5 GHz, the TDS of chaotic signal is suppressed to an indistinguishable level. Relative to traditional Fabry-Perot laser diode, WRC-FPLD used in the experiment has a smaller front reflectance, about 1/90 of the rear reflectance, and a longer cavity, so it can excite more lasing modes. The proposed scheme can generate wideband multi-channel chaotic signals with a small mode spacing, which is an ideal light source for the chaotic optical communication system using wavelength division multiplexing technology.

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“…Since the laser came out, solid laser, gas laser, liquid laser has been manufactured, among which, because it has the advantages of small volume, high reliability, long life and low loss, semiconductor laser is widely used in optical secure communication [1,2], chaotic lidar [3,4], random number generation [5,6], reservoir computing [7], intensity learning * Author to whom any correspondence should be addressed. [8,9], brain inspired photon neuromorphic computing [10,11].…”

Section: Introductionmentioning

confidence: 99%

Multi-channel chaotic signal generation using a weak resonant cavity Fabry–Perot laser diode subject to self-phase-modulated feedback

Yin,

Wang,

Deng

et al. 2023

Laser Phys. Lett.

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We propose and experimentally demonstrate a wideband multi-channel chaotic source using a weak resonant cavity Fabry–Perot laser diode with self-phase modulated optical feedback. In this configuration, self-phase modulation is incorporated into the external optical feedback loop to enhance bandwidth of the generated multi-channel chaos and suppress time delay signature (TDS). The experimental results indicate that, with appropriate optical feedback intensity, 86 lasing modes within the wavelength range of 1530–1570 nm and with the mode spacing of 0.47 nm can be simultaneously driven into a state of chaos, and the generated multi-channel chaos have an enhanced bandwidth and suppressed TDS.

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Fast Physical Random Bit Generation Based on a Broadband Chaotic Entropy Source Originated From a Filtered Feedback WRC-FPLD

Cited by 12 publications

References 31 publications

High-Speed Optical Chaotic Data Selection Logic Operations with the Performance of Error Detection and Correction

High-Speed Optical Chaotic Data Selection Logic Operations with the Performance of Error Detection and Correction

A scheme for broadband multi-channel chaotic signals generation

Multi-channel chaotic signal generation using a weak resonant cavity Fabry–Perot laser diode subject to self-phase-modulated feedback

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