Ultrafast Optical Signal Processing with Bragg Structures

Liu, Yikun; Fu, Shenhe; Malomed, Boris A.; Khoo, Iam Choon; Zhou, Jianying

doi:10.3390/app7060556

Cited by 14 publications

(7 citation statements)

References 71 publications

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“…In this particular area, it is very important to be able to control ultrafast optical signals that means working with short pulses of picosecond duration. Different Bragg structures are suitable for that purposes [2]. A specific case of those is the resonant photonic crystals (RPCs) [3].…”

mentioning

confidence: 99%

Resonant photonic crystals based on van der Waals heterostructures for effective light pulse retardation

Kazanov

Poshakinskiy

Shubina

2017

Superlattices and Microstructures

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mentioning

confidence: 99%

Resonant photonic crystals based on van der Waals heterostructures for effective light pulse retardation

Kazanov

Poshakinskiy

Shubina

2017

Superlattices and Microstructures

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“…(1) The dispersive broadening of the control-pulse must be negligible, i.e., in the dispersion length, l d ≡ T o 2 β 2 [6], T o 2 is the input pulse duration and must be larger than the interaction length of the two pulses.…”

Section: Methods and Theorymentioning

confidence: 99%

“…The need for preventing dispersive broadening of pulses in the presence of highly fluctuating group-velocity dispersion, such as for spectral regions around waveguide resonances, or at the edge of the stop band of Bragg-gratings, is becoming more significant with emerging technologies [4][5][6]. Many new optical technologies in the integrated platform use a bus waveguide coupled to ring resonators; for example, for optical sensors, lab-on-a-chip, filters, optical delay lines, and even as an optical memory scheme [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Maintaining Constant Pulse-Duration in Highly Dispersive Media Using Nonlinear Potentials

Zia

2021

Photonics

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A method is shown for preventing temporal broadening of ultrafast optical pulses in highly dispersive and fluctuating media for arbitrary signal-pulse profiles. Pulse pairs, consisting of a strong-field control-pulse and a weak-field signal-pulse, co-propagate, whereby the specific profile of the strong-field pulse precisely compensates for the dispersive phase in the weak pulse. A numerical example is presented in an optical system consisting of both resonant and gain dispersive effects. Here, we show signal-pulses that do not temporally broaden across a vast propagation distance, even in the presence of dispersion that fluctuates several orders of magnitude and in sign (for example, within a material resonance) across the pulse’s bandwidth. Another numerical example is presented in normal dispersion telecom fiber, where the length at which an ultrafast pulse does not have significant temporal broadening is extended by at least a factor of 10. Our approach can be used in the design of dispersion-less fiber links and navigating pulses in turbulent dispersive media. Furthermore, we illustrate the potential of using cross-phase modulation to compensate for dispersive effects on a signal-pulse and fill the gap in the current understanding of this nonlinear phenomenon.

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“…This feature is useful for optical signal generation of solitons and slow-light enhancement in sensor detection sensitivities. [37][38][39]…”

Section: D Waveguide Gratingmentioning

confidence: 99%

High‐Resolution 3D Printed Photonic Waveguide Devices

Gao

Chen

Xing

et al. 2020

Advanced Optical Materials

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Photonic building blocks fabricated using two‐photon polymerization laser lithography are reported. 3D polymer structures are fabricated using a direct laser writing process with nonlinear two‐photon absorption in photosensitive material. The 3D photonic structures include 3D photonic waveguides, Bragg gratings, and resonators. In particular, high‐quality spiral and air‐bridge waveguides providing 3D light guiding beyond a single plane are demonstrated. Sub‐micrometer features as well as unique coupling interfaces with 1.6 dB coupling losses and large 3 dB bandwidth are also demonstrated. Experimental characterization reveals the good transmission performance of the fabricated photonic devices. In addition, the waveguides are demonstrated to support 30 Gb s−1 NRZ (nonreturn to zero) and 56 Gb s−1 PAM4 (pulse amplitude modulation 4) high‐speed data. Small power penalties of 0.7 dB for NRZ (BER = 10−12) and 1.5 dB for PAM4 (BER = 10−6) are obtained.

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Ultrafast Optical Signal Processing with Bragg Structures

Cited by 14 publications

References 71 publications

Resonant photonic crystals based on van der Waals heterostructures for effective light pulse retardation

Resonant photonic crystals based on van der Waals heterostructures for effective light pulse retardation

Maintaining Constant Pulse-Duration in Highly Dispersive Media Using Nonlinear Potentials

High‐Resolution 3D Printed Photonic Waveguide Devices

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