Chaotic Brillouin optical correlation-domain analysis

Zhang, Jianzhong; Zhang, Mingtao; Zhang, Mingjiang; Liu, Yi; Feng, Changkun; Wang, Yahui; Wang, Yuncai

doi:10.1364/ol.43.001722

Cited by 56 publications

(32 citation statements)

References 24 publications

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“…Owing to the considerable importance of optical chaos demonstrated in communication systems such as physical random bit generation [1-3], chaotic radars [4], secure-communications [5][6][7], optical time-domain reflectometer (OTDR) [8], optical neuron [9], Brillouin optical correlation-domain analysis (BOCDA) [10], optical chaos generation process has recently attracted very great research attention. Basically, the optical feedback into semiconductor laser used to produce chaotic signal was mainly limited in application performances due to the monopolization of chaos RF spectrum by the laser relaxation oscillation frequency [11] and time-delay signature (TDS) [12].…”

Section: Introductionmentioning

confidence: 99%

Wideband Millimeter-Wave Flat Chaos Generation With Controllable Power Spectrum Using Optical Time Lens

Zinsou

Gao

et al. 2021

IEEE Photonics J.

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We propose and numerically demonstrate the generation of wideband millimeter-wave (mmW) flat chaos with controllable power spectrum by injection of chaotic signal from external cavity semiconductor laser (ECSL) into optical time lens with noise phase modulation. Simulation results indicate consistent elimination of the ECSL relaxation oscillation frequency domination over the RF spectrum for large scale parameters of the optical time lens module and a wideband flat chaos, whose efficient bandwidth rapidly increases with the bandwidth of the noise signal driving the phase modulator and phase modulation index. Besides, we show that the time delay signature suppression can be concurrently achieved for moderate values of the noise bandwidth and phase modulation index. The proposed wideband mmW flat chaos exhibits great potential applications for ultrahigh-speed chaos communications, mmW radars and macroscopic mmW noise source required for mmW research and design.

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Section: Introductionmentioning

confidence: 99%

Wideband Millimeter-Wave Flat Chaos Generation With Controllable Power Spectrum Using Optical Time Lens

Zinsou

Gao

et al. 2021

IEEE Photonics J.

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“…Optical chaos has many potential applications in chaos-based secure communication [1], chaos key distribution [2], Brillouin optical correlation domain analysis [3], physical random number generation [4], optical reflectometry [5], and chaos radar [6]. An external-cavity semiconductor laser is a common method to generate optical chaos, but this approach can induce a time-delay signature (TDS) corresponding to the length of the external-cavity.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Cavity Time-Delay Signature Using Noise-Phase-Modulated Feedback

et al. 2020

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We propose reconfiguration of the conventional feedback scheme to suppress the external-cavity time-delay signature (TDS) by adding noise phase modulation in the feedback of semiconductor laser. Noise-phase-modulated feedback introduces broad band noise frequencies into the feedback light and enables the suppression of the TDS. In this work, by means of simulations, the effect on TDS suppression of phase modulation (PM) index is explored. In addition, the influence of noise bandwidth variation is investigated. Using the auto-correlation function to quantity the TDS, we find that, for a large range of operating parameters, the TDS is significantly suppressed to the noise level and even submerged into the base noise. It is shown that suppression TDS is achievable over a wide operating parameter provided the noise generator bandwidth is of order 10 GHz and the PM index is greater than about 3. The proposed configuration will have widespread applications in contexts where suppression of the TDS is required. INDEX TERMS Chaos, noise phase modulation, time-delay signature.

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“…HAOTIC semiconductor lasers have been used in chaos radar [1]- [5], optical reflectometry [6]- [11], Brillouin optical correlation domain analysis [12], [13], physical random number generation [14]- [17], and chaos-based secure communication [18]- [21], where advantage has been taken of the broadband nature of optical chaos. A semiconductor laser with optical feedback, optoelectronic feedback or single-beam optical injection usually generates chaos with bandwidths around several GHz which limits the range resolution of chaotic lidar, the bit rate of random sequence generation and the transmission rate of optical chaos communications.…”

Section: Introductionmentioning

confidence: 99%

Chaos Bandwidth Enhancement of Fabry–Pérot Laser Diode With Dual-Mode Continuous-Wave Optical Injection

Han

Zhang

Shore

2019

IEEE J. Quantum Electron.

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We show numerically that dual-mode continueswave optical injection into a Fabry-Pérot laser diode subject to optical feedback generates a chaos bandwidth which is four to six times that without optical injection. As a comparison, it is shown that single-mode optical injection can increase the chaos bandwidth threefold with careful choice of detuning. Any combination of dual-mode injection will further enhance the chaos bandwidth and especially for strong injection and over relatively large positive detuning ranges. Even when the bias current of the Fabry-Pérot laser diode is relatively low, the bandwidth of chaos can reach 35 GHz after dual-mode optical injection, which is six times that without optical injection. The enhanced bandwidth with dual-beam optical injection is in accordance with our previous experiments [25]. The present simulations provide detailed guidance on the choice of experimentally accessible parameters to generate chaotic signals with enhanced bandwidth by using single or dual-beam optical injection into a Fabry-Pérot laser diode with optical feedback.

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Chaotic Brillouin optical correlation-domain analysis

Cited by 56 publications

References 24 publications

Wideband Millimeter-Wave Flat Chaos Generation With Controllable Power Spectrum Using Optical Time Lens

Wideband Millimeter-Wave Flat Chaos Generation With Controllable Power Spectrum Using Optical Time Lens

Suppression of Cavity Time-Delay Signature Using Noise-Phase-Modulated Feedback

Chaos Bandwidth Enhancement of Fabry–Pérot Laser Diode With Dual-Mode Continuous-Wave Optical Injection

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