Electro-Optical Effects of Chalcogenide Mid-Infrared Few-Mode Fibers with Lithium Niobate Cladding

被引：0
|
作者：
Duan B. [1 ]
Hou S. [1 ]
Lei J. [1 ]
Wu G. [1 ]
Yan Z. [1 ]
机构：
[1] School of Science, Lanzhou University of Technology, Lanzhou
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2024年 / 47卷 / 01期
关键词：
As[!sub]2[!/sub]S[!sub]3[!/sub; dispersion; electro-optic effect; few-mode fiber; LiNbO[!sub]3[!/sub;
D O I：
10.13190/j.jbupt.2023-010
中图分类号：
学科分类号：
摘要：
A mid-infrared chalcogenide few-mode fiber with cladding made by LiNbO3 crystals in which the optical axis is running along the axis of optical fiber is proposed. Besides, the effect of the adding electric field on the rate of the extraordinary to the ordinary ray refractive index of LiNbO3 crystals and the transmission characteristics of optical modes are studied by using the full-vector finite element method. The results show that the effective refractive index and power confinement factor both decrease with increasing wavelength, but the differential mode delay shows an increasing trend at the wavelength of 2. 25 ~ 3. 85 μm. Besides, the external axial electric field not only reduces the effective refractive index and differential mode delay of each optical mode, but also increases energy confinement for each mode. And the higher the mode orders is, the stronger energy confinement becomes. The dispersion of the HE11 mode rises with wavelength drop without an external electric field, whilst the HE21 , TE01 , and TM01 modes exhibit parabolic distribution with the wavelength increasing, and there exist two zero dispersion wavelengths. The dispersions of optical modes increase as the electrical field increases, which contributes to a blue shift of the dispersion zero point. In comparison with and without an electric field of 4 × 109 V/m, the zero dispersion wavelengths at the short wavelengths of HE11 , HE21 , TE01 and TM01 modes are blue-shifted by 0. 569 5 μm, 0. 391 5 μm, 0. 386 2 μm and 0. 559 4 μm, respectively. © 2024 Beijing University of Posts and Telecommunications. All rights reserved.
引用
收藏
页码：112 / 119
页数：7
相关论文
共 17 条
  • [1] ZHOU X, YAN X, ZHANG X N, Et al., Application of soft-glass optical fibers in biosensing, Laser & Optoelectronics Progress, 58, 15, (2021)
  • [2] ZHANG H, LI Y L, WU Q T., Mid-infrared 2. 8 μm band laser output and pulse modulation [ J/OL], Optik, (2021)
  • [3] WANG X F, YANG J F, YAN X T, Et al., Fabrication and optical performances measurements of flexible chalcogenide imaging fiber bundles, Optics and Precision Engineering, 25, 12, pp. 3137-3144, (2017)
  • [4] MAJEWSKI M R, WOODWARD R I, CARRE魪 J-Y, Et al., Emission beyond 4 μm and mid-infrared lasing in a dysprosium-doped indium fluoride (InF<sub>3</sub> ) fiber, Optics letters, 43, 8, pp. 1926-1929, (2018)
  • [5] DONG Y R, WANG X S., Research progress of infrared chalcogenide microstructure optical fibers, Acta Photonica Sinica, 48, 11, (2019)
  • [6] STRUTYNSKI C, CALZAVARA F, GUERINEAU T, Et al., Heavy-oxide glasses with superior mechanical assets for nonlinear fiber applications in the mid-infrared, Optical Materials Express, 11, 5, pp. 1420-1430, (2021)
  • [7] KAPANY N S, SIMMS R J., Recent developments in infrared fiber optics, Infrared Physics, 5, 2, pp. 69-80, (1965)
  • [8] WANG J J, FENG Z, WANG J, Et al., Dispersion tuning and supercontinuum generating in novel W-typed chalcogenide fiber [ J/OL ], Infrared Physics & Technology, (2020)
  • [9] QI Y F, LI Y., Integrated lithium niobate photonics, Nanophotonics, 9, 6, pp. 1287-1320, (2020)
  • [10] LU D C, ZHANG X P., Theoretical study on electro-optic effect and elasto-optic effect in chirped fiber grating with uniaxial crystal cladding, Acta Optica Sinica, 25, 8, pp. 1025-1029, (2005)
12