Joint communication and radar sensing functions system based on photonics at the W-band

Wang, Yanyi; Liu, Jiaxuan; Ding, Jianfeng; Wang, Mingxu; Zhao, Feng; Yu, Jianjun

doi:10.1364/oe.449153

Cited by 38 publications

(7 citation statements)

References 22 publications

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“…To mitigate this problem, a modified structure (Design B) is proposed in which eight smaller tubes are added inside the four semi‐tubes (Figure 1b). According to the multi‐layered guiding model, [ 47 ] these newly added inner tubes could reduce the confinement loss dramatically if the new glass membrane thickness ( t 3 ) and the two air layers (one between the semi‐tubes and the inner tubes, and a second inside the inner tubes) all fulfill their anti‐resonance conditions. Fine adjustment of the parameters to values of D inner‐tube = 11 µm, t 3 = 0.37 µm, and s = 24 µm results in a remarkable loss reduction of ~37 dB when compared with that of Design A (Figure 1e).…”

Section: Resultsmentioning

confidence: 99%

Highly Birefringent Anti‐Resonant Hollow‐Core Fiber with a Bi‐Thickness Fourfold Semi‐Tube Structure

Hong

Gao

Ding

et al. 2022

Laser & Photonics Reviews

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The optical performance characteristics of anti‐resonant hollow‐core fibers (known as AR‐HCFs or ARFs) are improving rapidly, but the polarization maintaining issue with these fibers remains unresolved. Although a regular nonbirefringent ARF can maintain high polarization purity under static conditions, it cannot resist mechanical disturbances. In this work, by designing a bi‐thickness semi‐tube ARF structure with fourfold rotational symmetry, the first ARF with a level of birefringence close to 10−4 is fabricated. The proposed ARF features a combination of phase birefringence of 9.1 × 10−5, a minimum loss of 185 dB km−1, a bandwidth of 133 nm, and single‐mode operation. Furthermore, the ARF shows high resistance to fiber bending and wide‐range temperature variations, thus confirming that this carefully designed ARF can serve as a practical workhorse in polarization‐related optical fiber applications.

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Section: Resultsmentioning

confidence: 99%

Highly Birefringent Anti‐Resonant Hollow‐Core Fiber with a Bi‐Thickness Fourfold Semi‐Tube Structure

Hong

Gao

Ding

et al. 2022

Laser & Photonics Reviews

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“…The spectra of the complexes are more complex than EDA, especially in the 1700-1000 cm À1 range. 23 The various deformation vibrations of CH 2 and NH 2 interact with EDA and one peak splits into multiple smaller peaks. For example, the CH 2 arrow vibration 1461 cm À1 of EDA splits into 1447 and 1407 cm À1 , suggesting that EDA forms N-Ni coordination bonds with the metal, which redshifts the infrared spectrum of EDA.…”

Section: Infrared and Thermal Weight Loss And Xps Characterization Of...mentioning

confidence: 99%

Effect of N–Ni coordination bond on the electrical and thermal conductivity of epoxy resin/nickel‐coated graphite

Zhang,

et al. 2023

J of Applied Polymer Sci

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The agglomeration of nickel‐coated graphite (NCG) in epoxy resin (EP) composites leads to low electrical conductivity of EP composites, which limits their development in electronic devices and multilayer circuits. In order to improve the electrical and thermal conductivity of NCG/EP composites, ethylenediamine (EDA) was used to modify NCG and compared with pure NCG‐filled EP composites. It was found that the conductive effect of modified composites with 20 wt% filler is better than that of unmodified composites with 40 wt% filler. The results of Fourier transform infrared spectroscopy and thermogravimetric analysis of EDA‐modified NCG (ENCG) showed that a coordination adsorption reaction occurred between EDA and NCG, forming N–Ni coordination bonds. When the filling amount of ENCG was 40 wt%, the conductivity and thermal conductivity of the composite are improved most significantly. The volume resistivity was reduced from 2.636 to 0.109 Ω cm, a decrease of 95.85%, and the thermal conductivity was improved from 0.517 to 0.968 W/(m K), an increase of 87.23%, respectively. Meanwhile, ENCG has better dispersion in the EP matrix than NCG.

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“…For example, the investigation of optical solitons using FWM was reported by Wu [2]. FWM has been investigated in different systems [18][19][20][21][22][23][24]. For quantum dot and quantum well nanostructures, the FWM efficiency was studied for different parametric conditions [21,25].…”

Section: Introductionmentioning

confidence: 99%

A five-level cold atomic system for the orbital angular momentum exchange based on a four-wave mixing setup

Ali,

Kamona,

Hussein

et al. 2023

Laser Phys.

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In this paper, we suggest a theoretical model for the exchange of the orbital angular momentum (OAM) state of laser fields in a real cold atomic system for realization in an experimental setup. By using four-wave mixing (FWM) processes, we study the spatial dependence of the new weak generated signal light under electromagnetically induced transparency conditions when one of the laser lights becomes an optical vortex. We discuss the spatial dependence of FWM processes via experimental parameters for different conditions of the OAM of vortex light. We have found that the intensity and phase distributions of the new generated light depends strongly on the OAM number of the optical vortex light. Moreover, we investigate the absorption spectrum of the new generated signal light for different OAM of the optical vortex light. Our obtained results may have potential applications in quantum information science.

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Joint communication and radar sensing functions system based on photonics at the W-band

Cited by 38 publications

References 22 publications

Highly Birefringent Anti‐Resonant Hollow‐Core Fiber with a Bi‐Thickness Fourfold Semi‐Tube Structure

Highly Birefringent Anti‐Resonant Hollow‐Core Fiber with a Bi‐Thickness Fourfold Semi‐Tube Structure

Effect of N–Ni coordination bond on the electrical and thermal conductivity of epoxy resin/nickel‐coated graphite

A five-level cold atomic system for the orbital angular momentum exchange based on a four-wave mixing setup

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