Three-dimensional reconstruction of refractive index inhomogeneities in optical phase elements

Gorski, Witold; Kujawińska, Małgorzata

doi:10.1016/s0143-8166(02)00019-2

Cited by 21 publications

(15 citation statements)

References 9 publications

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“…This remark is confirmed by tomographic measurement of the microtip inner structure according procedures described before [14,20,21]. As an example, the results of the tomographic measurements of the microtip shown in Fig.…”

Section: Microtips On Single Mode Optical Fiberssupporting

confidence: 65%

Polymer Microtips Fabricated at the Extremity of Photonic Crystal Fibers

Pura¹,

Szymanski²,

Wiśniowski³

et al. 2013

JMSE-B

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Abstract:In this paper, a simple method of manufacturing micrometer-sized polymer elements (microtips) at the extremities of the photonic crystal fibers (PCFs), which are replacing standard optical fibers in many applications due to their unique properties, is presented. The method of microtips fabrication is based on the phenomena of photopolymerization, which is successfully used by the first time, to be best of our knowledge, to manufacture microtip at PCF. The three component photopolymerizable formulation consists of photo-initiating system and multifunctional triacrylate. The photopolymerization is carried out by green laser with the microtip growth controlled by the light exposure parameters (i.e. power and time). Results of microtip fabrication on standard fiber (SMF-28e+) and large mode area PCF (LMA-10) are provided. Theinfluence of the initial process parameters on the final microtip characteristics (i.e., length, diameter and profile) is discussed. The potential applications of such polymer microtips are near-field scanning optical microscopy, coupling light sources with fibers and sensing.

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Section: Microtips On Single Mode Optical Fiberssupporting

confidence: 65%

Polymer Microtips Fabricated at the Extremity of Photonic Crystal Fibers

Pura¹,

Szymanski²,

Wiśniowski³

et al. 2013

JMSE-B

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“…Interferometric tomography is a hybrid method, which consists of 2D interferometry combined with tomographic 3D reconstruction methods [3]. The interferometry measurement result is a 2D map containing information about integrated refractive index changes in the field of view.…”

Section: Interferometric Tomographymentioning

confidence: 99%

“…Microinterferometric tomography is full-field method for determination of three-dimensional refractive index distribution n(x,y,z) [3]. It has been proved to be an excellent tool for analyzing n(x,y,z) in of large variety of phase microelements including optical fibers and OF based elements (splices, couplers) [4,5], gradient lenses and waveguides with specially modified refractive index distribution.…”

Section: Introductionmentioning

confidence: 99%

Application of microinterferometric tomography as an evaluation tool for phase micro-objects

Kniazewski

Krajewski

Kujawińska

et al. 2005

Eighth International Symposium on Laser Metrology

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Microinterferometric tomography allows for determination of three-dimensional refractive index distributions in phase isotropic microelements. In this paper we present the measurement of the refractive index profile of the optical fibers exposed to the gamma radiation. Nuclear radiation is known to affect the guiding properties of optical fibers and it is therefore essential to characterize these effects to assess the applicability of fiber-optic technology for communication and sensing in nuclear industry. It is already well known that radiation affects the absorption of the fiber. Here, we investigated whether we could quantify the effect of radiation on the refractive index of core and cladding of an optical fiber.

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“…Considerable errors to measurement are introduced by diffraction phenomenon [3]. The smallest elements inspected structure consist on, the more important are this errors.…”

Section: Interferometric Tomographymentioning

confidence: 99%

“…Another very important problem is diffraction on channels edges [3]; immersion liquid has to be introduced inside channels in order to reduce diffraction effects which do not allow for proper measurement.…”

Section: Initial Holey Fiber Refractive Index Measurementsmentioning

confidence: 99%