1. Articles from Patrick J. French

    1-3 of 3
    1. Miniature 10 kHz thermo-optic delay line in silicon

      Miniature 10 kHz thermo-optic delay line in silicon
      The scanning delay line is a key component of time-domain optical coherence tomography systems. It has evolved since its inception toward higher scan rates and simpler implementation. However, existing approaches still suffer from drawbacks in terms of size, cost, and complexity, and they are not suitable for implementation using integrated optics. In this Letter, we report a rapid scanning delay line based on the thermo-optic effect of silicon at λ=1.3μm manufactured around a generic planar lightwave circuit technology. The reported device attained line scan rates of 10kHz and demonstrated a scan range of 0.95mm without suffering any ...
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    2. Miniature optical coherence tomography system based on silicon photonics

      Miniature optical coherence tomography system based on silicon photonics
      Optical Coherence Tomography (OCT) is a promising medical imaging technique. It has found applications in many fields of medicine and has a large potential for the optical biopsy of tumours. One of the technological challenges impairing faster adoption of OCT is the relative complexity of the optical instrumentation required, which translates into expensive and bulky setups. In this paper we report an implementation of Time Domain OCT (TD-OCT) based on a silicon photonic platform. The devices are fabricated using Silicon-On-Insulator (SOI) wafers, on which rib waveguides are defined. While most of the components needed are well-known in this technology, a ...
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    3. Thermo-optical delay line for optical coherence tomography

      Thermo-optical delay line for optical coherence tomography
      Optical Coherence Tomography (OCT) is a powerful medical imaging technology. Its ability to non-invasively probe tissues in depth with high resolution has lead to applications in many fields of medicine, with a large potential for surgical guidance. One of the technological challenges impairing faster adoption of OCT is the relative complexity of the corresponding optical instrumentation, which translates into expensive and bulky setups. In this paper a compact fastscanning optical delay line based on the thermo-optical effect of silicon is studied. Although this effect has been applied to other optical components, the necessary frequency behaviour together with the relatively large ...
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    1-3 of 3
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    1. (3 articles) Delft University of Technology
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    Thermo-optical delay line for optical coherence tomography Miniature optical coherence tomography system based on silicon photonics Miniature 10 kHz thermo-optic delay line in silicon A PhD position is available in OPIRA laboratory at the Biomedical Engineering Department of the University of Illinois in Chicago A PhD position is available in OPIRA laboratory at the Biomedical Engineering Department of the University of Illinois in Chicago Artifact Rates for 2D Retinal Nerve Fiber Layer Thickness Versus 3D Neuroretinal Rim Thickness Using Spectral-Domain Optical Coherence Tomography Development of Deep Learning Models to Predict Best-Corrected Visual Acuity from Optical Coherence Tomography Machine learning helps improve diagnostic ability of subclinical keratoconus using Scheimpflug and OCT imaging modalities Applications and Future Directions for Optical Coherence Tomography in Dermatology Anterior Segment Inflammation in Pediatric Uveitis Is Associated with Reduced Retinal Vascular Density as Quantified by Optical Coherence Tomography Angiography Neointima characteristics as a prognostic marker for drug-coated balloon angioplasty in patients with in-stent restenosis: an optical coherence tomography study Using Anterior Segment Optical Coherence Tomography (ASOCT) Parameters to Determine Pupillary Block versus Plateau Iris Configuration