Recently, low coherence interferometry (LCI) and optical frequency domain reflectometry (OFDR) have become a very popular noninvasive sensing method to obtain a tomographic image with high resolution and high sensitivity. It is necessary to use mechanical or frequency scanning of the coherent light source to obtain a tomographic image. By use of a spectrometer and a photodiode array, absolute optical path difference (OPD) is obtainable from a spectral density function and its Fourier transform without any mechanical scanning. When one analyzes a spectrally resolved interference is detected by a CCD camera at a frequency plane, OPD information as well as its sign and also the spatial information, thus the two-dimensional information, are simultaneously obtainable without any mechanical scanning. We present a new method to obtain a two-dimensional tomographic image without any scanning. The proposed scheme is experimentally demonstrated for multilayered high reflectance objects.


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    Title :

    A two-dimensional optical coherence tomography using spectral domain interferometry


    Contributors:
    Suekuni, M. (author) / Teramura, Y. (author) / Kannari, E. (author)


    Publication date :

    1999-01-01


    Size :

    122409 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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