Chaotic lidar

Lin, Fan-Yi; Liu, Jiaming

doi:10.1117/12.528633

Cited by 22 publications

(38 citation statements)

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“…Therefore, the proposed modulation scheme is useful for improving the precision of chaotic lidar systems, which require broadband signals for autocorrelation. The associated narrow spectral peaks of the spectra generated from the proposed system are also potentially applicable to Doppler lidar experiments [Lin & Liu, 2004;Diaz et al, 2002].…”

Section: Signal Characteristicsmentioning

confidence: 99%

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Chaotic Dynamics of Laser Diodes With Strongly Modulated Optical Injection

Chan

Tang

2009

Int. J. Bifurcation Chaos

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In this paper, a modulated optical injection system is proposed. It mainly consists of a semiconductor laser subject to a modulated optical injection. It is known that optical injection will force a laser intensity into high-speed periodic oscillation without modulation, while the oscillation will be locked with weak external modulation. However, the route to chaos in such a system is observed and reported for the first time. It is shown that the generated oscillation frequency shifts away from the external frequency when the modulation amplitude becomes sufficiently large. Due to the nonlinearities of the laser, the frequencies are mixed inside the laser cavity, which causes the dynamics to follow a quasi-periodic route to chaos. In addition, the resultant chaotic signal possesses a larger bandwidth than that attainable with constant optical injection alone. Since the system is capable of generating both narrowband photonic microwave signals with low phase variances and chaotic signals with large bandwidths, it is practically important for Doppler and chaotic lidar applications.

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Section: Signal Characteristicsmentioning

confidence: 99%

“…Moreover, the resultant chaotic bandwidth is found to be larger than that attainable with a constant optical injection alone. These kinds of signals are useful for improving chaotic lidar [Lin & Liu, 2004] and Doppler lidar measurements [Diaz et al, 2002].…”

Section: Introductionmentioning

confidence: 99%

Chaotic Dynamics of Laser Diodes With Strongly Modulated Optical Injection

Chan

Tang

2009

Int. J. Bifurcation Chaos

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“…Therefore, the broad bandwidth chaotic light with characteristic of noise-like vibration and simple generated configuration had a trend of the replacement of the pseudorandom-code modulated light. Myneni et al [5] first used the chaotic laser for ranging and then Lin and Liu [6] proposed the concept of the chaotic lidar with a proof-ofconcept experiment.…”

Section: Introductionmentioning

confidence: 99%

Free Space Ranging Utilizing Chaotic Light

Zhao

Wang

et al. 2013

Mathematical Problems in Engineering

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We report our recent works on free space ranging with chaotic light. Using a laser diode with optical feedback as chaotic source, a prototype of chaotic lidar has been developed and it can achieve a range-independent resolution of 18 cm and measurable distance of 130 m at least. And its antijamming performance is presented experimentally and numerically. Finally, we, respectively, employ the wavelet denoising method and the correlation average discrete-component elimination algorithm to detect the chaotic signal in noisy environment and suppress the side-lobe noise of the correlation trace.

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“…HAOTIC optical signals have many potential applications, such as chaotic optical communications [1][2][3][4][5][6][7][8][9][10], chaotic lidar/radar [11,12] and random number generation [13][14][15][16] and so the generation of chaotic optical signals has attracted considerable research interest. Chaos in semiconductor laser has been extensively studied because of the ease of operation of semiconductor lasers and their fast response [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Chaos in semiconductor laser has been extensively studied because of the ease of operation of semiconductor lasers and their fast response [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Semiconductor lasers can be easily driven into chaos by the application of external-cavity optical feedback, external optical injection or optoelectronic feedback.…”

Section: Introductionmentioning

confidence: 99%

Flat Broadband Chaos in Vertical-Cavity Surface-Emitting Lasers Subject to Chaotic Optical Injection

Hong

Spencer

Shore

2012

IEEE J. Quantum Electron.

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Four schemes for the generation of chaos in VCSELs by optical feedback and/or optical injection have been evaluated experimentally. The experimental results show that the preferred scheme is to effect chaotic optical injection into a stable operating VCSEL. This is an effective method to generate a flat broad-bandwidth chaotic signal with the bandwidth of the chaotic signal being enhanced by more than four times compared with that obtained using optical feedback. In addition, the chaotic signal generated by chaotic optical injection has a flat power spectrum. If a continuous wave (CW) signal is injected into a chaotic VCSEL, the bandwidth of chaos can also be enhanced, but less than that using the preferred scheme. Moreover the spectrum in this case is not very flat. For CW optical injection into a CW VCSEL, the power spectrum of the chaos has many peaks and so is not suitable for applications in chaotic optical communication and random number generation. Injecting chaotic light into a chaotic VCSEL provides little enhancement of the chaos bandwidth.

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Chaotic lidar

Cited by 22 publications

References 0 publications

Chaotic Dynamics of Laser Diodes With Strongly Modulated Optical Injection

Chaotic Dynamics of Laser Diodes With Strongly Modulated Optical Injection

Free Space Ranging Utilizing Chaotic Light

Flat Broadband Chaos in Vertical-Cavity Surface-Emitting Lasers Subject to Chaotic Optical Injection

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