Enhancement of Chaotic Signal Bandwidth in VCSELs Induced by Polarized Optical Injection

Pérez, P.; Valle, A.

doi:10.1109/jqe.2015.2429122

Cited by 8 publications

(31 citation statements)

References 29 publications

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“…Parallel optical injection means that linearly polarized light is injected parallel to the linear polarization of the free-running VCSEL. The theoretical dependence of the chaotic bandwidth on the frequency detuning found in [21] is in agreement with the experimental results shown in [19]. Moreover, in [21], orthogonal optical injection, in which linearly polarized light is injected orthogonal to the linear polarization of the free-running VCSEL is also investigated for different values of the linear dichroism (γ a ).…”

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalsupporting

confidence: 86%

“…The theoretical dependence of the chaotic bandwidth on the frequency detuning found in [21] is in agreement with the experimental results shown in [19]. Moreover, in [21], orthogonal optical injection, in which linearly polarized light is injected orthogonal to the linear polarization of the free-running VCSEL is also investigated for different values of the linear dichroism (γ a ). In this case, the authors found that the selection of the orthogonal polarization, can result in a much larger chaotic bandwidth than that obtained for the total emitted power.…”

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalsupporting

confidence: 86%

“…For the applications of the optical chaos, the bandwidth of the chaos is one of the most important quantities. Different methods have been proposed to enhance the chaotic bandwidth such as optical injection in VCSELs [19]- [22], or in distributed feedback lasers (DFB) [23], optical feedback [24] or optical injection and optical feedback simultaneously [20], [21], [23], [25]. Recently, in [19] the authors have experimentally proposed different schemes to generate and to enhance the bandwidth of chaos in VCSELs.…”

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalmentioning

confidence: 99%

“…In [21], the authors analyze theoretically the scheme proposed in [19] for parallel optical injection. Parallel optical injection means that linearly polarized light is injected parallel to the linear polarization of the free-running VCSEL.…”

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalmentioning

confidence: 99%

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Enhancement of Chaos Bandwidth in VCSELs Induced by Simultaneous Orthogonal Optical Injection and Optical Feedback

Quirce

Valle

Thienpont

et al. 2016

IEEE J. Quantum Electron.

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In this paper, we present an experimental study of bandwidths of broadband chaotic signals in a single-mode vertical-cavity surface-emitting laser (VCSEL) subject to orthogonal optical injection and optical feedback simultaneously. Bandwidths of the two linear polarizations and total power are measured for different values of frequency detuning and bias currents. When the VCSEL is subject to optical feedback only, both linear polarizations of the VCSEL are excited showing chaotic dynamics. Under simultaneous optical feedback and optical injection for small bias currents, we demonstrate that the orthogonal polarization can give a much larger value of the chaotic bandwidth than the total emitted power in agreement with Perez et al.

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Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalsupporting

confidence: 86%

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalsupporting

confidence: 86%

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalmentioning

confidence: 99%

Section: Enhancement Of Chaos Bandwidth In Vcsels Induced By Simultaneous Orthogonal Opticalmentioning

confidence: 99%

See 2 more Smart Citations

Enhancement of Chaos Bandwidth in VCSELs Induced by Simultaneous Orthogonal Optical Injection and Optical Feedback

Quirce

Valle

Thienpont

et al. 2016

IEEE J. Quantum Electron.

Self Cite

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show abstract

“…Injection schemes require however a careful matching of the coupled laser multiple parameters. These and similar bandwidth enhancement techniques 28 29 can also be applied to further optimize the chaos bandwidth achieved here with phase-conjugate feedback.…”

Section: Discussionmentioning

confidence: 96%

High-frequency chaotic dynamics enabled by optical phase-conjugation

Mercier¹,

Wolfersberger²,

Sciamanna³

2016

Sci Rep

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Wideband chaos is of interest for applications such as random number generation or encrypted communications, which typically use optical feedback in a semiconductor laser. Here, we show that replacing conventional optical feedback with phase-conjugate feedback improves the chaos bandwidth. In the range of achievable phase-conjugate mirror reflectivities, the bandwidth increase reaches 27% when compared with feedback from a conventional mirror. Experimental measurements of the time-resolved frequency dynamics on nanosecond time-scales show that the bandwidth enhancement is related to the onset of self-pulsing solutions at harmonics of the external-cavity frequency. In the observed regime, the system follows a chaotic itinerancy among these destabilized high-frequency external-cavity modes. The recorded features are unique to phase-conjugate feedback and distinguish it from the long-standing problem of time-delayed feedback dynamics.

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Dual-channel physical random bits generation by a master-slave vertical-cavity surface-emitting lasers chaotic system

Ran

Tang

et al. 2018

Laser Phys.

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Taking the chaotic output from a master-slave framework chaotic system as chaotic entropy resource, we propose a scheme for acquiring dual-channel high-speed physical random bits (PRBs). For such a scheme, a vertical-cavity surface-emitting laser (VCSEL) under polarization-preserved optical feedback from a fiber Bragg grating is utilized as the master VCSEL (M-VCSEL). Under suitable operating parameters, both X and Y polarization components (X-PC and Y-PC) of the M-VCSEL can output chaotic signals with comparable power and weak time-delay signatures. The chaotic outputs from the X-PC and Y-PC of the M-VCSEL are divided into two parts, and then injected into the corresponding polarized component of another VCSEL (named as slave VCSEL, S-VCSEL) after undergoing different flight-time, and such an injection method is named as dual-path polarization-preserved optical injection (DP-PPOI). The X-PC and Y-PC in the S-VCSEL under DP-PPOI can simultaneously output chaotic signals with enhanced bandwidth, which are quantified by 8-bit analog-to-digital converters and taken as the entropy sources for generating dual-channel bit sequence after adopting m least significant bits (m-LSBs) extraction and logical exclusive-OR post-processing. Finally, the randomness of the bit sequences generated under optimized parameters is tested by NIST SP 800-22 statistical test suite. The results demonstrate that dual-channel random bits at rate of 500 Gbit s −1 can be obtained, and the rate of random bits can be further increased to 1 Tbit s −1 through adopting cross-merging method.

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Enhancement of Chaotic Signal Bandwidth in VCSELs Induced by Polarized Optical Injection

Cited by 8 publications

References 29 publications

Enhancement of Chaos Bandwidth in VCSELs Induced by Simultaneous Orthogonal Optical Injection and Optical Feedback

Enhancement of Chaos Bandwidth in VCSELs Induced by Simultaneous Orthogonal Optical Injection and Optical Feedback

High-frequency chaotic dynamics enabled by optical phase-conjugation

Dual-channel physical random bits generation by a master-slave vertical-cavity surface-emitting lasers chaotic system

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