Construction of fiber-optic bundle light-collection systems and calculations of collection efficiency

DiBerardino, Diana; Rafac, Robert J.; Boone, Steven; Gerginov, Vladislav; Tanner, Carol E.

doi:10.1016/s0030-4018(02)01765-0

Cited by 6 publications

(2 citation statements)

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“…Probe structure can be varied to control excitation and emission wavelengths, target-binding affinity, chemical reactivity, and subcellular localization. 2 Fluorescence is also amenable to high throughput analysis for screening applications, 3 construction of ber optics for medical and environmental measurements, 4 and visual detection of analytes. 5 While much of this is appreciated in a general sense, there is still a signicant activation barrier to entering the eld.…”

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confidence: 99%

Small-molecule fluorescent probes and their design

2018

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Section: Overviewmentioning

confidence: 99%

Small-molecule fluorescent probes and their design

2018

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“…This disadvantage in particular limits the application range of single-mode fibers, especially in areas such as biophotonics (e.g., wide field fiber endoscopes) − or quantum technology (e.g., collection of randomly emitted photons). Other fiber applications that require high coupling efficiencies include the study of light-emitting processes, where very small amounts of light have to be detected, − or optical sensors that aim to collect light scattered − or emitted in media close to fiber end-faces. One possible solution relies on using high-aperture objectives, , which is not practical when space is limited or remote operation is considered (e.g., in vivo applications − ).…”

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Nanostructure-Empowered Efficient Coupling of Light into Optical Fibers at Extraordinarily Large Angles

et al. 2020

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Coupling of light from free space to optical fibers is essential for many applications, while commonly used step-index optical fibers provide insufficient coupling efficiencies especially at large angles of incidence. Here, we demonstrate record-high coupling efficiencies achieved with dielectric nanostructures located on single-mode fiber end faces. We introduce a novel approach that allows fabricating dielectric nanostructures at the facet of a step-index optical fiber via an extended version of planar electron-beam based lithography. We demonstrate polarization-and angle-independent coupling of light into the fiber across a wide range of angles as large as 80°. We support our experimental results with an analytical model and extensive numerical simulations. Our results reveal the key properties of nanostructure-empowered fibers that may improve the performance of many optical devices requiring efficient collection of light, including quantum technologies (single-photon collection) or biophotonics (in vivo imaging). Our approach can be extended to other materials and geometries, merging fiber optics with high-index dielectric metasurfaces, allowing for unprecedented functionalities for the efficient control of light.

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