Cost-effective optical coherence tomography spectrometer based on a tilted fiber Bragg grating

  • S. Remund
  • , A. Bossen
  • , X. Chen
  • , L. Wang
  • , A. Adebayo
  • , L. Zhang
  • , B. Povazay
  • , C. Meier

    Research output: Contribution to conferencePaper

    Abstract

    A compact, fiber-based spectrometer for biomedical application utilizing a tilted fiber Bragg grating (TFBG) as integrated dispersive element is demonstrated. Based on a 45° UV-written PS750 TFBG a refractive spectrometer with 2.06 radiant/μm dispersion and a numerical aperture of 0.1 was set up and tested as integrated detector for an optical coherence tomography (OCT) system. Featuring a 23 mm long active region at the fiber the spectrum is projected via a cylindrical lens for vertical beam collimation and focused by an achromatic doublet onto the detector array. Covering 740 nm to 860 nm the spectrometer was optically connected to a broadband white light interferometer and a wide field scan head and electronically to an acquisition and control computer. Tomograms of ophthalmic and dermal samples obtained by the frequency domain OCT-system were obtained achieving 2.84 μm axial and 7.6 μm lateral resolution. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
    Original languageEnglish
    DOIs
    Publication statusPublished - 20 Feb 2014
    EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV, San Francisco, US (February 20, 2014) -
    Duration: 3 Jan 0001 → …

    Conference

    ConferenceOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV, San Francisco, US (February 20, 2014)
    Period3/01/01 → …

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