Study Of Multiplexed Holography Based On Dielectric/metal Hybrid Waveguide

With the development of current information technology,photonic integration has been widely valued and triggered by its advantages such as wide bandwidth,large capacity and high speed.In addition to the research on information processing and communication on film,the integration,large capacity,high rate information and human interaction are also hot topics.Multidimensional multichannel multiplexing holographic display and imaging are one of the important directions.However,the traditional holographic technique is based on spatial light field illumination,which lacks advantages in space dimension and integration of imaging devices.In recent years,with subwavelength features,surface plasmon polariton(SPP)has gradually been developed based on surface wave and space optical field conversion technology,and used for holographic processing.Nevertheless,the huge Ohmic loss of plasmonic mode severely restricts its applications in large-area application and its single-mode is hard to be used in optical device.Dielectric loaded plasmonic waveguides(DLPWs)are able to load more modes and the transvers electric(TE)modes in them have less propagation loss which has a great advantage in expanding the multiplexed space and increasing the size of the holographic display.In this paper,the following research work is mainly carried out on the carrier of the DLPW:1.We theoretically analyze the mode properties in the DLPW and experimentally measure the propagation loss and effective propagation length of SPP,TE and TM modes.Through our results,we prove that TE mode has less loss.Also,we realize the beam splitting in multi-mode DLPW by Bragg principle.2.We combine the mode division multiplexer(MDM)and DLPW holography and design two kinds of MDM holography in experiments,TM/TE based MDMH and TE0/TE1 based MDMH,respectively.The multiplexed holograms were successfully obtained with almost no crosstalk in experiment.The size of TM0 multiplexed hologram is 30 × 30 m2.Thanks to the low-loss property of TE mode,a much larger hologram pattern with 60 × 60 ?m2 size is presented.3.We theoretically proposed a TE0/TE1/TE2 based three-modes MDMH and prove the reliability of our methods.Our approach provides new ideas and guidance for the integration of 3D display technology in future on-chip integration.