Jinjun Bai

ORCID: 0000-0002-3395-6258
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Terahertz technology and applications
  • Photonic and Optical Devices
  • Metamaterials and Metasurfaces Applications
  • Plasmonic and Surface Plasmon Research
  • Catalysis and Hydrodesulfurization Studies
  • Catalytic Processes in Materials Science
  • Thermochemical Biomass Conversion Processes
  • Lignin and Wood Chemistry
  • Advanced Fiber Optic Sensors
  • Advanced Fiber Laser Technologies
  • Photonic Crystals and Applications
  • Catalysis for Biomass Conversion
  • Zeolite Catalysis and Synthesis
  • Advanced Antenna and Metasurface Technologies
  • Orbital Angular Momentum in Optics
  • Millimeter-Wave Propagation and Modeling
  • Coal and Its By-products
  • Laser-Matter Interactions and Applications
  • Photonic Crystal and Fiber Optics
  • Energy Harvesting in Wireless Networks
  • Engineering Applied Research
  • Semiconductor Lasers and Optical Devices
  • Wireless Power Transfer Systems
  • Semiconductor Quantum Structures and Devices
  • Thermal Radiation and Cooling Technologies

Tiangong University
2014-2024

China University of Mining and Technology
2020-2024

Yulin University
2020-2024

Beijing Information Science & Technology University
2023

Dalian Maritime University
2022

Tianjin University
2018-2019

Laboratoire de Mécanique des Sols, Structures et Matériaux
1996-2017

Chongqing University
2012

Nankai University
2009-2011

Luoyang Normal University
2007-2009

Abstract A new approach to the ring test is presented in this paper. Three-dimensional elastoplastic finite element modeling with contact has been performed analyze stress and strain distribution ring, optimize testing system, investigate effect of friction between specimen fixture. Based on numerical results, a design holding device that creates uniaxially stressed zone proposed order determine transverse behavior tubular products, such as modulus stress-strain curve. case study nuclear...

10.1520/jte11461j article EN Journal of Testing and Evaluation 1996-11-01

A broadband polarization splitter operating in the terahertz (THz) band is proposed based on dual-core photonic crystal fiber with orthogonal microstructure core regions. The Index Converse Matching Coupling method presented to design THz for first time, which exhibits several advantages, such as short splitting length, high extinction ratio, low loss, and broad operation bandwidth. By numerical simulation, it has been found that strong coupling occurs within a frequency range of 0.4-0.7...

10.1364/ao.52.003305 article EN Applied Optics 2013-05-06

We numerically investigate the photonic bandgaps as well transmission properties of a two-dimensional magnetic crystal (PC) in terahertz (THz) region by plane wave expansion and finite-difference time-domain methods. The calculation predicts PC waveguide that can work tunable filter with bandwidth larger than 0.1 THz, its central frequency is from 0.83 to 1.03 THz. It also shows be used polarization controller three functions, including controllable polarizing, beam splitting, −π–π phase shifting.

10.1364/josab.28.000697 article EN Journal of the Optical Society of America B 2011-03-09

Tunable terahertz (THz) wave cells have been demonstrated by using magnetic-controlled birefringence in a randomly aligned liquid crystal (LC) cell embedded with three kinds of thermotropic LCs (5CB, E7 and BNHR). By the THz time domain spectroscopy, these investigated under different low magnetic fields. Experimental results show that 3mm thickness still high controlled field regime. The phase shift π for BNHR is achieved over entire testing range at 30mT, dynamic response process weak has...

10.1364/ome.6.002803 article EN cc-by Optical Materials Express 2016-08-09

A compact optical fiber refractive index (RI) sensor based on a tiny S taper (SFT) cascaded with Bragg grating (FBG) is proposed and experimentally demonstrated. The SFT can excite recouple the cladding modes, hence, it produces modal interference, which sensitive to surrounding index. Due reflection of FBG, RI measurement be realized by monitoring peak power change reflective FBG spectrum. experimental result shows that sensitivity achieved as high 366.69 dB/RIU ranging from 1.3330 1.3988....

10.1109/lpt.2017.2773638 article EN IEEE Photonics Technology Letters 2017-11-15

A low loss broadband terahertz (THz) polarization splitter with a compact and simple structure has been proposed, which is based on the mode coupling between two porous fibers orthogonally oriented cross section microstructures. The dispersion curves of are adjusted by index converse matching method. An interlacing stacking technique using polymer tubes rods presented for fabrication proposed high-birefringence fiber. characteristics single have analyzed in detail. In addition, dual-porous...

10.1109/lpt.2014.2326178 article EN IEEE Photonics Technology Letters 2014-05-29

A waveguide Bragg grating (WBG) can facilitate an adaptable method for glucose monitoring according to the optical properties of polymer materials. We propose design and fabrication a WBG monitoring. By exploiting oxidase as upper cladding, polydimethylsiloxane was used substrate, polymethyl methacrylate core layer. investigated effects diffraction order, structure, period on reflected spectrum WBG. Finally, process reproducibility after long-term storage capability eliminate background...

10.1063/5.0157534 article EN cc-by Applied Physics Letters 2023-07-17
Coming Soon ...