Phase noise and phase modulation in optical coherence tomography

    Authors

    P. Parrein;J. Meier

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    INTERFEROMETRY; REFLECTOMETRY; Optics

    Abstract

    The signal in optical coherence tomography is often modulated either in phase or by use of the Doppler modulation generated by a depth-scanning mechanism. The effect of each type of modulation on the signal's amplitude is evaluated. The advantages of each type of modulation in terms of immunity to phase noise and penetration depth are discussed in relation to two envelope detection schemes, i.e., lock-in detection and rms-to-dc conversion. Phase noise due to drifts and demodulation instabilities causes distortion of the signal envelope and can be responsible in part for the speckle appearance of the image. (C) 2004 Optical Society of America.

    Journal Title

    Applied Optics

    Volume

    43

    Issue/Number

    15

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    3010

    Last Page

    3017

    WOS Identifier

    WOS:000221528200002

    ISSN

    1559-128X

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