Conventional imaging systems under the water rely on acoustic waves, which suffer from low resolutions and limited refreshment speeds. We, instead, use optical engineering and nanooptic technologies including diffractions, interferences, scatterings, colors and spectra of lights to cope with above problems. The research subjects include:

     ●Theory: Diffractive optical elements; Plasmonics; Colorimetry; Scattering and reverse scattering.

    ●Technology: Augmented reality glass; Metafiber sensors; In-situ optical microscopy and spectroscopy; Machine vision.