The Study Of Sensing Properties Of Two-dimensional Phoxonic Crystals

Due to the limited function of natural materials in nature,the artificial design and preparation of microstructural materials have aroused great concern.Over the past two decades,artificial periodic structures have been widely used to control the propagation of classic waves,including electromagnetic and elastic waves.Which includes phononic crystals(PnCs),photonic crystals(PtCs),phononic quasicrystals(PnQCs),and photonic quasicrystals(PtQCs)and so on.Under certain conditions,photonic crystals and phononic crystals can produce corresponding photonic and phononic bandgaps.Acousto-optic crystals are capable of producing both photon and phonon bandgaps,which can integrate the control of light,sound and heat,enhancing the interaction between photons and phonons.This paper studied the photonic crystal and phononic crystal formed by the combination of photonic crystals(PXCs),and by using the finite element numerical simulation method,two-dimensional acoustic band structure of photonic crystal is studied and the Specifically included:1.We research the two-dimensional photonic crystals on the larger geometry size range at the same time produce photons and the characteristics of the phonon energy band,and a large number of photons and phonons mode in the zero defect features of two-dimensional photonic crystal structure.These photons and phonons local mode distribution of the defects in a certain wavelength range,and can limit the electromagnetic wave and elastic wave at the same time,in order to achieve sound and light sensor.2.The study of photonic crystals can realize the localization of photons and phonons by means of artificially introducing point defects.To discuss the effects of physical parameters of different structures on the sensitivity of two-dimensional acoustic photonic crystal photoacoustic sensors.For example,the phoxonic crystal microcavity formed by the introduction of point defects in the triangular lattice phoxonic crystal is studied.3.By calculating the light and acoustic transmission spectrum,phoxonic sensitivity are obtained.The research results show PhXCs can simultaneously not only confine optical and acoustic waves,but also provide high sensitivity to optical and acoustic waves.by simply introducing a point defect into a perfect PhXCs.The sensitivity of TE and TM mode light sensors reached 277 nm /RIU and 488 nm/RIU respectively,the acoustic sensing sensitivity reached 2.75MHz/ms-1.This kind sensor can deal with complex analytes for biosystems due to the fact that it can determine two independent physical properties simultaneously.The structure of this paper has the simultaneous Photonic and Phononic band gaps,which realizes simultaneous control of photons and phonons.It actualizes simultaneous localization and sensor of photons and phonons,which is helpful to monitor the dynamic changes in complex biochemical systems.The coupling between phonon and photon are obtained,which provides a new method for high efficiency modulation of electromagnetic wave at microscopic scale.The modulation of electromagnetic wave and elastic wave is more efficient in micro-nano scale.This kind of structure will have wide application value in the field of micro-nano photonics,biology,chemistry and other related science and technology.