Partially coherent Pearcey–Gauss beams

Zhou, X.; Pang, Zihao; Zhao, Daomu

doi:10.1364/ol.404277

Cited by 39 publications

(13 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fluctuation of electric field between two or more points can be considered as coherence of the light beams. The effect of coherence parameters is analyzed by different research groups [37,38]. The term of coherent vortex beam firstly was revealed by Coullet in 1989, then Allen found that vortex beams can carry OAM [39,40].…”

Section: Coherent Vortex Beams In Turbulent Mediamentioning

confidence: 99%

The Propagation of Vortex Beams in Random Mediums

Dalgaç¹,

Elmabruk²

2022

Vortex Dynamics - From Physical to Mathematical Aspects

View full text Add to dashboard Cite

Vortex beams acquire increasing attention due to their unique properties. These beams have an annular spatial profile with a dark spot at the center, the so-called phase singularity. This singularity defines the helical phase structure which is related to the topological charge value. Topological charge value allows vortex beams to carry orbital angular momentum. The existence of orbital angular momentum offers a large capacity and high dimensional information processing which make vortex beams very attractive for free-space optical communications. Besides that, these beams are well capable of reducing turbulence-induced scintillation which leads to better system performance. This chapter introduces the research conducted up to date either theoretically or experimentally regarding vortex beam irradiance, scintillation, and other properties while propagating in turbulent mediums.

show abstract

Section: Coherent Vortex Beams In Turbulent Mediamentioning

confidence: 99%

The Propagation of Vortex Beams in Random Mediums

Dalgaç¹,

Elmabruk²

2022

Vortex Dynamics - From Physical to Mathematical Aspects

View full text Add to dashboard Cite

show abstract

“…[2][3][4][5][6] With the unique properties of inversion, auto-focusing and self-healing, the theoretical introduction and experimental realization in optics, [7] Pearcey beams have attracted widespread attention in recent years, leading to different types of Pearcey beams generation such as dual Pearcey beams, [8] ring and symmetric Pearcey Gaussian (PG) beams [9,10] and partially coherent PG beams. [11] Especially, by imposing Gaussian truncation on ideal Pearcey beams, the physical realization of PG beams with finite energy becomes possible because ideal Pearcey beams have infinite energy. Based on space-time duality, the PG pulses have also exhibited remarkable properties of PG beams in time domain.…”

Section: Introductionmentioning

confidence: 99%

Controllable Dispersive Wave Radiation from Pearcey Gaussian Pulses

Zhang

Wang

et al. 2022

Annalen der Physik

View full text Add to dashboard Cite

The process of dispersive waves (DWs) emitted from unique Pearcey Gaussian (PG) pulses with both temporal and spectral asymmetric shapes in the anomalous dispersion region of optical fiber is investigated. In contrast to symmetric pulses such as fundamental soliton (Sech) or Gaussian, the radiation amplitude and energy conversion efficiency of DWs are significantly improved by adjusting the asymmetry of the spectral distribution and the temporal oscillation structure of PG pulses. It is shown that, for the case of PG pulses, the minimum value of third-order dispersion parameter required for the emergence of DWs emission is nearly reduced 50% compared with the case of symmetric pulses. It is also shown that the radiation frequency of DWs emitted from PG pulses can be predicted by a modified phase matching condition. The theoretical predictions are in good agreement with the numerical simulations. The impact of Raman scattering effects on the DWs emission is also disclosed. The results of this study clearly reveal the impact of the inherent behaviors of PG pulses on the DWs emission, which should be relevant for applications requiring broadband light sources based on the mechanism of DWs emission.

show abstract

“…1 summarizes the capacity-reach for C band IM/DD optical systems over dispersion-uncompensated links. The most commonly used DSP algorithms include the decision feedback equalizer [1,2], Tomlinson-Harashima precoding [3][4][5], maximum likelihood sequence estimation (MLSE) [6][7][8], neural network equalizer (NNE) [9] for the single-carrier modulation and adaptive bit and power loading (ABPL) [10,11] for the multi-carrier modulation. In our previous work, we proposed a 100Gbit/s multi-rate Nyquist-subcarrier modulation (SCM) signal with seven subcarriers over 50km standard single-mode fiber (SSMF) transmission [12].…”

Section: Introductionmentioning

confidence: 99%