The Optical Properties of A Liquid Crystal-metal Photonic Crystal Waveguide

Bo, 杨波 Yang; Jingqiu, 梁静秋 Liang; Zhongzhu, 梁中翥 Liang; Wei-biao, 王维彪 Wang

doi:10.3788/fgxb20113211.1159

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extensively used novel optical devices such as photonic crystal materials [1] [2] , binary optical elements, have increasing significance in miniaturization and integration of optical devices, and have evoked great research interest over the world.…”

Section: Introductionmentioning

confidence: 99%

Application of optical switch based on the liquid-crystal modulated self-collimating photonic crystals

Li¹,

Yang²

2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

View full text Add to dashboard Cite

Abstract. The tunability on the refractive index of the liquid crystals makes the photonic crystal optical switch possible, which comprises liquid crystal materials. In this article, based on the light induced alignment of liquid crystals and the self-collimation effect in the photonic crystals, an all-optical switch is proposed. The photonic crystal consists of silicon rods arranged in a triangular lattice in a liquid crystal background. The plane wave expansion (PWE) method is used to calculate the equi-frequency contours(EFCs) and the band diagrams. The transmission spectra are obtained by using the finite-difference time-domain (FDTD) method. The propagation of light in such structure is simulated with the FDTD method.

show abstract

Section: Introductionmentioning

confidence: 99%

Application of optical switch based on the liquid-crystal modulated self-collimating photonic crystals

Li¹,

Yang²

2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

View full text Add to dashboard Cite

show abstract

Transient heat transfer analysis of laminated materials based on extended separation of variables

Li¹,

Shui-Mu²,

Hai-Yan³

et al. 2018

Acta Phys. Sin.

View full text Add to dashboard Cite

In general, when the one-dimensional heat conduction equation is solved by the method of separation of variables, we need to know the governing equations, two boundary conditions and initial condition. Because the thermophysical parameters in different layers of laminated materials are different, the heat conduction model cannot be expressed by the same governing equation. For each layer of laminated material, the boundary condition is unknown. That equation can-not be solved directly by the general separation variable method. In this work the separation of variable method is extended. The temperature field of laminated material's heat transfer is divided into many minute time intervals on the time axis. Based on differential conception, in a minimum time interval, the temperature at the junction of laminated materials can be considered to be proportional to time. Assume that the slope coefficient makes the boundary condition known, then for each layer of laminated materials, the general separation of variables method will be used to solve the temperature field. According to the same temperature and the energy continuity at the junction of laminated materials, one can solve the slope coefficient. The temperature field in the whole time domain can be obtained through cycling. Then the three-layer insulation materials are analyzed by the extended separation variable method. The correctness of the method is verified by comparing the calculated results with those from the finite element method. The influences of the type and thickness of heat insulation layer, heat transfer coefficient, air temperature on the heat insulation are studied. It is found that the thermal conductivity of the thermal insulation layer has a great influence on the insulation. The material with low heat conduction coefficient can enhance the heat insulation effect. The thicker the thickness of the insulation layer, the more slowly the surface temperature of the heat insulation material rises, and the lower the final temperature, the better the insulation effect is. The thicker the thickness of the insulation layer, the smaller the heat flux density of the heat insulation material shell is, and the better the heat insulation effect when the heat transfer reaches a stable state. All calculation results are consistent with physical phenomena. In this work, the analytical method is used to solve the heat transfer problem of laminated materials. Compared with the general numerical methods, the analytical method presents clear physical meaning and high efficiency of operation as well.

show abstract

The Optical Properties of A Liquid Crystal-metal Photonic Crystal Waveguide

Cited by 2 publications

References 0 publications

Application of optical switch based on the liquid-crystal modulated self-collimating photonic crystals

Application of optical switch based on the liquid-crystal modulated self-collimating photonic crystals

Transient heat transfer analysis of laminated materials based on extended separation of variables

Contact Info

Product

Resources

About