Development of thermally stable tellurite glasses designed for fabrication of microstructured optical fibers

Stępień, Ryszard; Buczyński, Ryszard; Pysz, Dariusz; Kujawa, Ireneusz; Filipkowski, Adam; Mirkowska, Monika; Diduszko, R.

doi:10.1016/j.jnoncrysol.2010.10.046

Cited by 52 publications

(28 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, OCT has been initially developed for ophthalmology [1], and it is usually focused on biomedical applications, including in skin, dentistry, or endoscopy [24]. For non-medical applications, OCT has been used especially for in-depth investigations of non-metallic (i.e., non-reflective) samples, in Non-Destructive Testing (NDT) of plastics and composites [25,26], electronic materials [27,28], dental materials [21,29,30], glass [31,32], or even art works like paintings [33]-to determine their internal structure, matrices and reinforcement, superficial stress, layer thickness, defects occurring inside layers.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Ductile, Brittle, and Fatigue Fractures of Metals Using Optical Coherence Tomography

Huţiu

Duma

Demian

et al. 2018

Metals

View full text Add to dashboard Cite

Some forensic in situ investigations, such as those needed in transportation (for aviation, maritime, road, or rail accidents) or for parts working under harsh conditions (e.g., pipes or turbines) would benefit from a method/technique that distinguishes ductile from brittle fractures of metals-as material defects are one of the potential causes of incidents. Nowadays, the gold standard in material studies is represented by scanning electron microscopy (SEM). However, SEM instruments are large, expensive, time-consuming, and lab-based; hence, in situ measurements are impossible. To tackle these issues, we propose as an alternative, lower-cost, sufficiently high-resolution technique, Optical Coherence Tomography (OCT) to perform fracture analysis by obtaining the topography of metallic surfaces. Several metals have been considered in this study: low soft carbon steels, lamellar graphite cast iron, an antifriction alloy, high-quality rolled steel, stainless steel, and ductile cast iron. An in-house developed Swept Source (SS) OCT system, Master-Slave (MS) enhanced is used, and height profiles of the samples' surfaces were generated. Two configurations were used: one where the dimension of the voxel was 1000 µm 3 and a second one of 160 µm 3 -with a 10 µm and a 4 µm transversal resolution, respectively. These height profiles allowed for concluding that the carbon steel samples were subject to ductile fracture, while the cast iron and antifriction alloy samples were subjected to brittle fracture. The validation of OCT images has been made with SEM images obtained with a 4 nm resolution. Although the OCT images are of a much lower resolution than the SEM ones, we demonstrate that they are sufficiently good to obtain clear images of the grains of the metallic materials and thus to distinguish between ductile and brittle fractures-especially with the higher resolution MS/SS-OCT system. The investigation is finally extended to the most useful case of fatigue fracture of metals, and we demonstrate that OCT is able to replace SEM for such investigations as well.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessment of Ductile, Brittle, and Fatigue Fractures of Metals Using Optical Coherence Tomography

Huţiu

Duma

Demian

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…For those reasons, relaxation frequencies are set non-zero but small enough (v c1,2,3 = 10 −4 f p1,2,3 ) to assure that the loss factor is negligible. Table 1 shows Sellmeier coefficients and the corresponding Lorentz parameters of two glasses, namely TWNN16 and PBS517 (Stępień et al 2011). Once the material properties are properly represented, total fiber dispersion can be determined.…”

Section: Electromagnetic Analysis Of Pcfmentioning

confidence: 99%

FDTD analysis of modal dispersive properties of nonlinear photonic crystal fibers

et al. 2014

View full text Add to dashboard Cite

This paper presents a full-wave electromagnetic analysis of soft-glass photonic crystal fibers developed for the generation of supercontinuum based on third-order nonlinearity. It is shown that a two-dimensional finite-difference time-domain method for guided problems provides results very similar to the measurement data of real fiber structures, enabling the reduction of costly hardware prototyping, thus, opening the way for the application of FDTD to the modeling of nonlinear optical processes.

show abstract

“…For the initial experiments in this work, we selected glasses known for their appreciable transmission characteristics in the visible and mid-infrared parts of spectrum ( Fig. 2) (Stepien et al 2011;Lorenc et al 2008). The composition of the selected glasses is shown in Table 1.…”

Section: Hot Embossing Glass and Materials For Stamp Selectionmentioning

confidence: 99%

Fabrication and characterization of microlenses made of tellurite and heavy metal oxide glass developed with hot embossing technology

et al. 2013

Self Cite

View full text Add to dashboard Cite

In this paper we describe the work on application of hot embossing process to fabrication of micro-optical elements transmitting in the visible, near infrared and mid-infrared part of spectrum, using multi-component soft glasses as starting materials. Description of used hot embossing (HE) process is provided, followed by discussion of rheological and viscosity properties of several glass types considered for demonstrator fabrication experiment. Demonstrator microlenses were fabricated from lead-bismuth-gallium oxide (PBG08) and tellurite glasses (TWPN/I/6), with transmission windows extending from the visible up to the mid-infrared (up to around 6.5 μm). Fabricated elements, which included diffractive and refractive lenses and lens arrays, were examined in context of homogeneity (quality of pattern replication) and obtained optical properties (M 2 , focal length, resolution). A demonstrator microscope objective was constructed using refractive plano-concave, plano-convex and biconvex lenses fabricated with the HE setup and its optical characteristics were provided.

show abstract

Development of thermally stable tellurite glasses designed for fabrication of microstructured optical fibers

Cited by 52 publications

References 19 publications

Assessment of Ductile, Brittle, and Fatigue Fractures of Metals Using Optical Coherence Tomography

Assessment of Ductile, Brittle, and Fatigue Fractures of Metals Using Optical Coherence Tomography

FDTD analysis of modal dispersive properties of nonlinear photonic crystal fibers

Fabrication and characterization of microlenses made of tellurite and heavy metal oxide glass developed with hot embossing technology

Contact Info

Product

Resources

About