Mid-infrared dual-cladding photonic crystal fiber with high birefringence and high nonlinearity

Shen, Zhiwei; Li, Keyao; Jia, Chunhua; Jia, Hongzhi

doi:10.1007/s10043-020-00596-7

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…reported As 38 Se 62 PCFs, which achieved birefringence of the orders of 10 −3 and 10 −4 , respectively. Shen et al [20] studied As 2 S 3 PCF with maximum birefringence of 2.169 × 10 −1 , nonlinearity of 3726 W −1 km −1 , and confinement loss below 3 × 10 −4 dB/m. Chalcogenide glasses contain toxic arsenic; however, Ge-Sb-Se glasses are environment friendly owing to their minimal toxicity.…”

Section: Introductionmentioning

confidence: 99%

Ultra-high birefringence mid-infrared Ge₂₀Sb₁₅Se₆₅ chalcogenide glass photonic crystal fiber with low confinement loss

Wang

2023

Phys. Scr.

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This study introduces a Ge20Sb15Se65 chalcogenide-glass-based photonic crystal fiber (PCF) with high birefringence and nonlinearity and ultra-low confinement loss, in which two elliptical air holes are added in the core. The propagation properties of the proposed PCF are investigated in mid-infrared range (3.0–5.0 μm) using the finite element method (FEM). Simulation results indicate that optimizing structural parameters can increase the birefringence and nonlinear coefficient to a maximum of 3.16×10−1 and 5937 W-1km-1 (in y-polarization mode), respectively, a significantly low confinement loss reach 10-14 dB/m at 3.0μm wavelength, there can obtain one zero dispersion wavelength in the study band, and the designed structure can be fabricated using available technology. The designed PCF will have promising application in mid-infrared fiber fields, optical communication, super-continuum generation, precision, and nonlinear optics.

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Section: Introductionmentioning

confidence: 99%

Ultra-high birefringence mid-infrared Ge₂₀Sb₁₅Se₆₅ chalcogenide glass photonic crystal fiber with low confinement loss

Wang

2023

Phys. Scr.

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“…Controlling light intensity, phase, and polarization through anisotropic, high-index, or plasmonic materials has led to the advancement of many applications such as polarizers, , wave plates, , photovoltaics, , and sensors . Conventional plasmonic materials are mainly metals such as silver and gold, which suffer from high losses. , On the other hand, mid- and far-IR birefringent materials include cadmium selenide, sulfide, and lithium thiogallate that possess very small birefringence, , As 38 Se 62 microstructured optical fibers that contain toxic arsenic, Ge 20 Sb 15 Se 65 photonic crystal fibers that have birefringence in the range of 0.1–0.3, , and liquid crystals . Moreover, MoS 2 , WS 2 , and other transition-metal dichalcogenides possess high index and high birefringence in the UV–vis region .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, Figure 6 provides a comparison of the birefringence of Bi-doped and codoped structures, where it is the highest in mid-and far- IR. 2,[10][11][12][13]15,16,45,46 Finally, the scattering and absorption cross section of a 250 nm radius sphere is calculated using FDTD (Figure 7), where the response is similar in x,y and different in z, confirming birefringence, and the absorption cross section is lower in the case of 6Bi + O v , confirming lower losses. These aforementioned characteristics are considered to be very interesting and qualify these materials for numerous applications.…”

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confidence: 99%

Tailoring the Optical Properties of Zinc Oxide via Bismuth Doping and Codoping Strategies: From Birefringence to Metallicity

2022

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Density functional theory was employed to explore the effect of Bi as a high-index dopant on the optical properties of titanium dioxide (TiO 2 ), zirconium dioxide (ZrO 2 ), and zinc oxide (ZnO). It was found that Bi Metal substitutional doping results in a reduction of the band gap energy (E g ) by creating new defect states in all investigated oxides. In the case of ZnO, the in-plane refractive index (n x,y ) is doubled (>3) over a wide band in mid-and far-IR regions, and the largest birefringence is observed compared to other materials reported in the literature. The presence of oxygen vacancies (O v ) was found to lower the optical losses, as evident by the decreased absorption cross section of a 250 nm radius sphere as revealed via the FDTD simulation. At 12% Bi doping, metallicity is obtained with optical losses lower than silver, gold, and transitionmetal nitrides. Codoping with Bi and interstitial hydrogen (H i ) or substitutional aluminum (Al Zn ) showed the same effect, which increases both the in-plane and out-of-plane indices even higher but at the expense of increasing the optical losses.

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“…Introduction Photonic Crystal Fiber (PCF) has the capability to localize and guide light as these structures exploit excellent optical properties which are not possible using conventional optical fibers. In recent years, PCFs have drawn significant consideration due to certain unique characteristics like endless single mode [1], large effective mode area [2], high birefringence [3], high nonlinearity [4] and tunable dispersion [5] compared to the conventional fibers. The popularity of PCF is due to its lower weight, high flexibility and low loss in optical signal [6].…”

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confidence: 99%

Design and analysis of low loss solid-core hexagonal photonic crystal fiber for applications in terahertz regime

Rani

Chitra²

2023

J. Phys.: Conf. Ser.

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An index-guiding novel solid-core photonic crystal fiber (SC-PCF) formed by a hexagonal lattice of circular-shaped air holes arranged in silicon background is realized. By varying the radius ‘r’ of the air holes from 0.1a to 0.5a (where ‘a’ is defined as the lattice constant), the characteristic electromagnetic modes of the low loss Terahertz (THz) fiber were solved through eigenmode analysis using finite element method (FEM). The effective mode area and the nonlinearity of the proposed PCF are calculated for different radii of the air holes and it is found that the effective mode area decreases when the radius of the air holes is increased. On the other hand, the nonlinearity increases for an increase in the air holes radii. At 1 THz, the confinement loss of the proposed fiber is in the order of 10−23 dB/m and transmittance efficiency above 96% has been attained. As 5-G technology emanates, THz wave propagation becomes essential and the designed hexagonal lattice SC-PCF will be useful for the advancement of communication systems, sensing devices and several medical applications.

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Mid-infrared dual-cladding photonic crystal fiber with high birefringence and high nonlinearity

Cited by 6 publications

References 24 publications

Ultra-high birefringence mid-infrared Ge₂₀Sb₁₅Se₆₅ chalcogenide glass photonic crystal fiber with low confinement loss

Ultra-high birefringence mid-infrared Ge₂₀Sb₁₅Se₆₅ chalcogenide glass photonic crystal fiber with low confinement loss

Tailoring the Optical Properties of Zinc Oxide via Bismuth Doping and Codoping Strategies: From Birefringence to Metallicity

Design and analysis of low loss solid-core hexagonal photonic crystal fiber for applications in terahertz regime

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Mid-infrared dual-cladding photonic crystal fiber with high birefringence and high nonlinearity

Cited by 6 publications

References 24 publications

Ultra-high birefringence mid-infrared Ge20Sb15Se65 chalcogenide glass photonic crystal fiber with low confinement loss

Ultra-high birefringence mid-infrared Ge20Sb15Se65 chalcogenide glass photonic crystal fiber with low confinement loss

Tailoring the Optical Properties of Zinc Oxide via Bismuth Doping and Codoping Strategies: From Birefringence to Metallicity

Design and analysis of low loss solid-core hexagonal photonic crystal fiber for applications in terahertz regime

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Ultra-high birefringence mid-infrared Ge₂₀Sb₁₅Se₆₅ chalcogenide glass photonic crystal fiber with low confinement loss

Ultra-high birefringence mid-infrared Ge₂₀Sb₁₅Se₆₅ chalcogenide glass photonic crystal fiber with low confinement loss