Glass: The Carrier of Light ‐ A Brief History of Optical Fiber

Ballato, John; Dragic, Peter D.

doi:10.1111/ijag.12239

Cited by 37 publications

(21 citation statements)

References 94 publications

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“…and technical uses (optical fibers, sealing glasses, waste confinement matrixes, coatings, etc.) [1][2][3][4][5][6][7][8]. A large proportion of these glasses are called 'silicate' since their structural backbone (called the glass network) is formed by interconnected silica tetrahedra SiO 4 4-.…”

Section: Introductionmentioning

confidence: 99%

Solid State NMR: A Powerful Tool for the Characterization of Borophosphate Glasses

2020

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This review will show how solid state nuclear magnetic resonance (NMR) has contributed to a better understanding of the borophosphate glass structure. Over the last fifteen years, 1D and 2D magic angle spinning (MAS)-NMR has been used to produce key information about both local and medium range organization in this type of glass. After a brief presentation on borophosphate glasses, the paper will focus on the description of the local order of phosphate and borate species obtained by 1D 31P-and 11B-MAS-NMR experiments, with a special emphasis on the improvements obtained at high magnetic fields on the borate speciation description. The last part of this review will show how correlation NMR provided new insights into the intermediate length scale order. Special attention will be paid to the quantitative data retrieved from 11B/31P REDOR-based NMR sequences and to the qualitative connectivity schemes observed on the 2D 11B/31P maps edited with the heteronuclear multiple quantum coherence (HMQC) NMR techniques.

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Section: Introductionmentioning

confidence: 99%

Solid State NMR: A Powerful Tool for the Characterization of Borophosphate Glasses

2020

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“…These determine its wide range of applications-from UV lamps to optical elements. It is thanks to the development of silica glass technology and the production of optical fibers that the worldwide implementation of broadband Internet access has become possible (Ballato and Dragic, 2016).…”

Section: Glass Families and Their Place In The Periodic Tablementioning

confidence: 99%

Glass: Home of the Periodic Table

et al. 2020

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Glass is the most common material around us, and humankind uses it every day for more than 5000 years. However, from the chemical point of view, glass is the only material that could represent almost all elements of the Periodic Table inside itself, showing the effect of the Periodic Law on properties of the final material. In this paper, we show the most remarkable examples demonstrating that glass can rightfully be called "home" for all chemical elements providing different properties depending on its composition. We gave a new look at the Periodic Table and described how a small number of glass-forming components creates unique glass structure which could enclose almost all remaining elements including transition and noble metals, lanthanides and actinides as modifying components providing an inconceivable number of discoveries in material science. Moreover, we reviewed a series of studies on the direct femtosecond laser writing in glasses which paves the way for a redistribution of chemical elements in the spatially confined nanosized zone in glass volume providing unique properties of laser-induced structures. Finally, for the first time, we reproduce the Periodic Table in birefringence colors in the bulk of silica glass using a direct laser writing technique. This image of 3.6 × 2.4 mm size can withstand temperature up to 900 • C, humidity, electromagnetic fields, powerful cosmic and reactor radiation and other environmental factors and demonstrates both the art of direct laser writing and symbolic role of glass as the safest and eternal home for the Periodic Table.

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“…Additionally, microgrooves can be designed as microchannels or microswitches in biochips . Numerous qualities of these microstructures, including appropriate physicochemical properties, compact sizes, and flexible combinations, have brought them into vast optoelectronic and biomedical demands . High‐efficiency and high‐precision fabrication of microstructures have therefore become one of the frontier issues.…”

Section: Introductionmentioning

confidence: 99%

Mechanism study on microformability of optical glass in ultrasonic‐assisted molding process

Luo

Nguyen

et al. 2018

Int J of Appl Glass Sci

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Ultrasonic‐assisted glass molding process (UGMP) has gained a promising start in microptics fabrication in recent years. To further understand the microforming process and comprehensively evaluate the microformability of the glass in UGMP, theoretical considerations and numerical simulations are performed in this study. A generalized dynamic viscoelastic model of glass in UGMP is first reformulated based on the ultrasonic thermo‐mechanical effects. Correspondingly, a multiphysics numerical model of UGMP is developed to dynamically observe the thermo‐mechanical rheological behaviors of the L‐BAL42 glass inside the microscale mold cavities. The stress distributions and deformation features of the formed micro‐V‐grooves in different molding processes are further employed to fully investigate the ultrasonic mechanical and thermal effects on glass molding. The results show that, as a product of the combined ultrasonic mechanical and thermal effects, the filling rate of the glass in UGMP is observably increased and homogenized, while its maximum forming stress is reduced by 57.6% compared with the conventional molding process (GMP). It is also found that, the ultrasonic thermal effect is dominant in lowering the forming stress of the glass, while the ultrasonic mechanical effect plays a leading role in homogenizing the filling rate of the glass. This study will provide both theoretical and technical supports for high‐efficiency and high‐precision fabrication of surface‐relief microptical elements.

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Glass: The Carrier of Light ‐ A Brief History of Optical Fiber

Cited by 37 publications

References 94 publications

Solid State NMR: A Powerful Tool for the Characterization of Borophosphate Glasses

Solid State NMR: A Powerful Tool for the Characterization of Borophosphate Glasses

Glass: Home of the Periodic Table

Mechanism study on microformability of optical glass in ultrasonic‐assisted molding process

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