Sectional imaging of spatially refractive index distribution using coaxial rotation digital holographic microtomography

Yu Chih Lin, Chau-Jern Cheng

    Research output: Contribution to journalArticle

    19 Citations (Scopus)

    Abstract

    We propose and demonstrate a novel optical section imaging technique to measure the spatially refractive index (RI) distribution inside a sample using coaxial rotation digital holographic microtomography (DHμT). In this method, the illuminated laser source and image sensor are lined up and simultaneously rotated around the sample. The transmitted waves collected from the sample are used to generate a symmetric frequency, coverage as in a sample-rotation approach was discussed and simulated theoretically. We experimentally performed the sectional imaging of the RI inside a silicon micro-bead immersed in a liquid surrounding medium, to confirm the coaxial rotation DHμT as having the phase stability for tomographic recording and the reconstruction process. This sectional imaging technique is applied to measure the spatially RI distribution of a fusion structure between a single mode fiber and a polarization-maintaining fiber.

    Original languageEnglish
    Article number065401
    JournalJournal of Optics (United Kingdom)
    Volume16
    Issue number6
    DOIs
    Publication statusPublished - 2014 Jan 1

    Fingerprint

    Refractive index
    refractivity
    Imaging techniques
    imaging techniques
    Polarization-maintaining fiber
    Phase stability
    Silicon
    Single mode fibers
    Image sensors
    fibers
    Fusion reactions
    beads
    Lasers
    fusion
    recording
    Liquids
    sensors
    silicon
    polarization
    liquids

    Keywords

    • digital holographic microscopy
    • refractive index
    • tomography

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

    Cite this

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    abstract = "We propose and demonstrate a novel optical section imaging technique to measure the spatially refractive index (RI) distribution inside a sample using coaxial rotation digital holographic microtomography (DHμT). In this method, the illuminated laser source and image sensor are lined up and simultaneously rotated around the sample. The transmitted waves collected from the sample are used to generate a symmetric frequency, coverage as in a sample-rotation approach was discussed and simulated theoretically. We experimentally performed the sectional imaging of the RI inside a silicon micro-bead immersed in a liquid surrounding medium, to confirm the coaxial rotation DHμT as having the phase stability for tomographic recording and the reconstruction process. This sectional imaging technique is applied to measure the spatially RI distribution of a fusion structure between a single mode fiber and a polarization-maintaining fiber.",
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    AB - We propose and demonstrate a novel optical section imaging technique to measure the spatially refractive index (RI) distribution inside a sample using coaxial rotation digital holographic microtomography (DHμT). In this method, the illuminated laser source and image sensor are lined up and simultaneously rotated around the sample. The transmitted waves collected from the sample are used to generate a symmetric frequency, coverage as in a sample-rotation approach was discussed and simulated theoretically. We experimentally performed the sectional imaging of the RI inside a silicon micro-bead immersed in a liquid surrounding medium, to confirm the coaxial rotation DHμT as having the phase stability for tomographic recording and the reconstruction process. This sectional imaging technique is applied to measure the spatially RI distribution of a fusion structure between a single mode fiber and a polarization-maintaining fiber.

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