1. Articles from N. Passilly

    1-4 of 4
    1. Swept-source optical coherence tomography microsystem with an integrated Mirau interferometer and electrothermal micro-scanner

      Swept-source optical coherence tomography microsystem with an integrated Mirau interferometer and electrothermal micro-scanner

      In the rapid evolution of gastrointestinal endomicroscopy, optical coherence tomography (OCT) has found many diverse applications. Until recently, the micro-opto–electro-mechanical systems (MOEMS) technology has been playing a key role in shaping the miniaturization of these components. We report here, to the best of our knowledge, a novel endoscopic microsystem. It is based on a spectrally tuned MOEMS Mirau micro-interferometer integrated with micro-electro-mechanical systems (MEMS) electro-thermal micro-scanner, operating in the regime of swept-source (SS) OCT imaging. This Letter validates our initial proof-of-concept toward the development of such MOEMS probe and the presentation of experimental performances of the resulting SS-OCT microsystem. .

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    2. Full-field swept-source optical coherence tomography with phase-shifting techniques for skin cancer detection

      Full-field swept-source optical coherence tomography with phase-shifting techniques for skin cancer detection

      The EU-funded project VIAMOS1 proposes an optical coherence tomography system (OCT) for skin cancer detection, which combines full-field and full-range swept-source OCT in a multi-channel sensor for parallel detection. One of the project objectives is the development of new fabrication technologies for micro-optics, which makes it compatible to Micro-Opto-Electromechanical System technology (MOEMS). The basic system concept is a wafer-based Mirau interferometer array with an actuated reference mirror, which enables phase shifted interferogram detection and therefore reconstruction of the complex phase information, resulting in a higher measurement range with reduced image artifacts. This paper presents an experimental one-channel on-bench OCT system ...

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    3. Technological platform for vertical multi-wafer integration of miniature imaging instruments

      Technological platform for vertical multi-wafer integration of miniature imaging instruments

      We describe a technological platform developed for miniaturization of optical imaging instruments, such as laser scanning confocal microscopes or Optical Coherence Tomography devices. The platform employs multi-wafer vertical integration approach, combined with integrated glass-based micro-optics and heterogeneous bonding and interconnecting technologies. In this paper we focus on the unconventional fabrication methods of monolithic micro-optical structures and components in borosilicate glass (e.g. micro beamsplitters, refractive microlenses) for optical beam shaping and routing. In addition, we present hybrid laser-assisted integration of glass ball microlenses on the silicon MEMS actuators for transmissive beam scanning as well as methods of electrical signals distribution ...

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    4. Optical design of a vertically integrated array-type Mirau-based OCT system

      Optical design of a vertically integrated array-type Mirau-based OCT system

      The presented paper shows the concept and optical design of an array-type Mirau-based OCT system for early diagnosis of skin cancer. The basic concept of the sensor is a full-field, full-range optical coherence tomography (OCT) sensor. The micro-optical interferometer array in Mirau configuration is a key element of the system allowing parallel imaging of multiple field of views (FOV). The optical design focuses on the imaging performance of a single channel of the interferometer array and the illumination design of the array. In addition a straylight analysis of this array sensor is given.

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    1-4 of 4
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  2. Topics in the News

    1. (2 articles) FEMTO-ST Institute
    2. (2 articles) Luc Froehly
    3. (1 articles) University of Florida
    4. (1 articles) Huikai K. Xie
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    Optical design of a vertically integrated array-type Mirau-based OCT system Technological platform for vertical multi-wafer integration of miniature imaging instruments Full-field swept-source optical coherence tomography with phase-shifting techniques for skin cancer detection Swept-source optical coherence tomography microsystem with an integrated Mirau interferometer and electrothermal micro-scanner A case report of a coronary myocardial bridge with impaired full-cycle ratio during dobutamine challenge Diagnosis of chronic stage of hypertensive retinopathy based on spectral domain optical coherence tomography A Cross-sectional Optical Coherence Tomography Study in Patients on Taxane-based Therapy and A Case Report with the Literature Review Determination of peripapillary vessel density in optic disc drusen using EDI-OCT and OCT angiography Optical coherence tomography features of neovascularization in proliferative diabetic retinopathy: a systematic review Retinal microvascular metrics in untreated essential hypertensives using optical coherence tomography angiography Optical coherence tomography angiography findings of fellow eye of proliferative macular telangiectasia type 2: Long term study Reorganization of the perifoveal microvasculature after macular hole closure assessed via optical coherence tomography angiography