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Temperature independent refractive index measurement using a fiber Bragg grating on abrupt tapered tip
A fiber Bragg grating was inscribed in an abrupt fiber taper using a femtosecond laser and phase-mask interferometer. The abrupt taper transition allows to excite a broad range of guided modes with different...
PublikationenA Brief Review of New Fiber Microsphere Geometries
A brief review of new fiber microsphere geometries is presented. Simple microspheres working as Fabry–Perot cavities are interrogated in reflection and in transmission. Two microspheres were also spliced...
PublikationenPerspective: Biomedical sensing and imaging with optical fibers—Innovation through convergence of science disciplines
The probing of physiological processes in living organisms is a grand challenge that requires bespoke analytical tools. Optical fiber probes offer a minimally invasive approach to report physiological...
PublikationenConformation-dependent phosphorescence emission of individual mononuclear ruthenium-(II)–bis-terpyridine complexes
The potential of supramolecular transition metal coordination complexes to form robust, long-living, radiative charge transfer states makes this class of triplet state emitters ideal candidates for application...
PublikationenSpectral imaging based on 2D diffraction patterns and a regularization model
We present a variational approach to reconstruct a multispectral image from an array of diffraction patterns captured in one monochromatic image. The mathematical model relies on the superposition of wavelength...
PublikationenHigh sensitivity strain sensor based on twin hollow microspheres
A sensor based on 2 hollow core microspheres is proposed. Each microsphere was produced separately through fusion splicing and then joined. The resultant structure is a Fabry-Perot interferometer with...
PublikationenBeer’s law derived from Electromagnetic Theory
We present a rigorous derivation of Beer’s law from electromagnetic theory. As a result of this derivation, the attenuation constant is shown to be a function of the index of refraction. For small concentrations...
PublikationenRaman and infrared spectroscopy reveal that proliferating and quiescent human fibroblast cells age by biochemically similar but not identical processes
Dermal fibroblast cells can adopt different cell states such as proliferation, quiescence, apoptosis or senescence, in order to ensure tissue homeostasis. Proliferating (dividing) cells pass through the...
PublikationenHigh-fidelity multimode fibre-based endoscopy for deep brain in vivo imaging
Progress in neuroscience relies on new techniques for investigating the complex dynamics of neuronal networks. An ongoing challenge is to achieve minimally invasive and high-resolution observations of...
PublikationenTip-enhanced Raman imaging of single-stranded DNA with single base resolution
Tip-enhanced Raman scattering (TERS) is a promising optical and analytical technique for chemical imaging and sensing at single molecule resolution. In particular, TERS signals generated by a gap-mode...
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