Journal ArticleDOI
Influence of tapering process on changes of optical fiber refractive index distribution along a structure
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In this article, the internal structure changes along an optical fiber during the manufacture of biconical taper have been described, and the results have been discussed in relation to the parameters of the manufacturing process.Abstract:
Investigations of internal structure changes along an optical fiber during the manufacture of biconical taper have been described. Basing on the constant volume theory, classification of biconical structures manufactured on a special set-up is presented and discussed. The interferometric tomography method has been used for determination of 3D geometry and refractive index distribution in manufactured optical fiber tapers. The experiments provide detailed information on external (diameter of cladding) as well as internal (core diameter and refractive index profile) changes along the taper region. The results have been discussed in relation to the parameters of the manufacturing process.read more
Citations
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Journal ArticleDOI
Threshold temperature optical fibre sensors
Karol A. Stasiewicz,J.E. Musial +1 more
TL;DR: Application of some isotropic materials is an attempt to prove that there is a possibility to obtain a low-cost, repeatable and smart sensor working as an in-line element based on a biconical optical fibre taper.
Journal ArticleDOI
Influence of a thin metal layer on a beam propagation in a biconical optical fibre taper
TL;DR: In this article, a simulation of the plasmon effect achieved between a thin precious metal layer and a biconical optical fiber taper, manufactured on a standard single mode fiber, was presented.
Proceedings ArticleDOI
Broadband photonic crystal fiber coupler with polarization selection of coupling ratio
TL;DR: In this article, a new broadband photonic crystal fiber coupler is presented, which operates in the weakly coupling condition, protects coupling operation in range from 900 nm to 1700 nm.
Proceedings ArticleDOI
Investigation of refractive index distribution in different photonic crystal fiber elements
Leszek R. Jaroszewicz,Malgorzata Kujawinska,Karol A. Stasiewicz,Pawel Marc,Tomasz Nasilowski,Michal Murawski,Michal Szymanski,Bartłomiej Siwicki,Wojciech Krauze +8 more
TL;DR: In this paper, the authors presented the tomographic in-line determination of geometry and refractive index distribution changes along the investigated photonic structure and compared the analysis of different approaches to the photonic crystal fiber data capture with a sufficient optical resolution.
References
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Journal ArticleDOI
The shape of fiber tapers
Tim A. Birks,Y.W. Li +1 more
TL;DR: In this article, a model for the shape of optical fiber tapers, formed by stretching a fiber in a heat source of varying length, is presented, and a complete practical procedure for the formation of fiber taper with any reasonable shape is thus presented.
Journal ArticleDOI
Supercontinuum generation in tapered fibers
TL;DR: In this paper, a supercontinuum light with a spectrum more than two octaves broad (370-1545 nm at the 20-dB level) was generated in a standard telecommunications fiber by femtosecond pulses from an unamplified Ti:sapphire laser.
Journal ArticleDOI
One-dimensional tomography: a comparison of Abel, onion-peeling, and filtered backprojection methods.
TL;DR: It is shown that the Abel inversion, onion-peeling, and filtered backprojection methods can be intercompared without assumptions about the object being deconvolved.
Book
Interferogram analysis for optical testing
TL;DR: In this paper, the authors present a comparison of the main two-wave interferometric systems and their configurations used in optical testing and digital image processing, as well as some useful Spatial Filters.
Journal ArticleDOI
Effect of taper geometries and launch angle on evanescent wave penetration depth in optical fibers.
Mohammad Ahmad,Larry L. Hench +1 more
TL;DR: The effects of tapering, launch angle and taper length of the fiber have been explored in detail using a ray-tracing model to calculate the highest possible penetration depth of the evanescent field.