Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems

B.I. Akça, B. Povazay, Lantian Chang, A. Alex, Kerstin Worhoff, R.M. de Ridder, W. Drexler, Markus Pollnau

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

    Abstract

    Optical coherence tomography (OCT) has enabled clinical applications that revolutionized in vivo medical diagnostics. Nevertheless, its current limitations owing to cost, size, complexity, and the need for accurate alignment must be overcome by radically novel approaches. Exploiting integrated optics, the central components of a spectral-domain OCT (SD-OCT) system can be integrated on a chip. Arrayed-waveguide grating (AWG) spectrometers with their high spectral resolution and compactness are excellent candidates for on-chip SD-OCT systems. However, specific design-related issues of AWG spectrometers limit the performance of on-chip SD-OCT systems. Here we present advanced AWG designs which could overcome the limitations arising from free spectral range, polarization dependency, and curved focal plane of the AWG spectrometers. Using these advanced AWG designs in an SD-OCT system can provide not only better overall performance but also some unique aspects that a commercial system does not have. Additionally, a partially integrated OCT system comprising an AWG spectrometer and an integrated beam splitter, as well as the in vivo imaging using this system are demonstrated.
    Original languageUndefined
    Title of host publicationOptical Coherence Tomography and Coherence Techniques VI
    Place of PublicationBellingham, WA
    PublisherSPIE
    Pages1-6
    Number of pages6
    ISBN (Print)not assigned
    DOIs
    Publication statusPublished - Jun 2013

    Publication series

    NameProceedings of the SPIE
    PublisherSPIE
    Number880202
    Volume8802
    ISSN (Print)0277-786X

    Keywords

    • IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY
    • EWI-23490
    • flat focal field
    • METIS-297720
    • IR-86518
    • Arrayed waveguide gratings
    • Integrated Optics
    • Optical Coherence Tomography

    Cite this

    Akça, B. I., Povazay, B., Chang, L., Alex, A., Worhoff, K., de Ridder, R. M., ... Pollnau, M. (2013). Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems. In Optical Coherence Tomography and Coherence Techniques VI (pp. 1-6). (Proceedings of the SPIE; Vol. 8802, No. 880202). Bellingham, WA: SPIE. https://doi.org/10.1117/12.2032504