Dynamics of the refractive index induced in germanosilicate optical fibres by different types of UV irradiation

1997 ◽  
Vol 27 (9) ◽  
pp. 785-788 ◽  
Author(s):  
Evgenii M Dianov ◽  
Sergei A Vasil'ev ◽  
O I Medvedkov ◽  
A A Frolov
Keyword(s):  
Refractive Index ◽  
Uv Irradiation ◽  
Optical Fibres ◽  
Different Types

Modelling optical fibres with arbitrary refractive-index profiles

1979 ◽  
Vol 11 (6) ◽  
pp. 507-516 ◽  
Author(s):  
A. E. Karbowiak ◽  
D. H. Irving
Keyword(s):  
Refractive Index ◽  
Optical Fibres

Pulsed 157 nm VUV induced refractive index modification of optical fibres and planar fused silica

2002 ◽  
Vol 186 (1-4) ◽  
pp. 583-587 ◽  
Author(s):  
P.E. Dyer ◽  
A.-M. Johnson ◽  
H.V. Snelling ◽  
C.D. Walton
Keyword(s):  
Refractive Index ◽  
Fused Silica ◽  
Optical Fibres

scholarly journals Non-Negligible Effects of UV Irradiation on Transformation and Environmental Risks of Microplastics in the Water Environment

2021 ◽  
Vol 12 (1) ◽  
pp. 1-12
Author(s):  
Fangyuan Cheng ◽  
Tingting Zhang ◽  
Yue Liu ◽  
Yanan Zhang ◽  
Jiao Qu
Keyword(s):  
Environmental Factors ◽  
Uv Irradiation ◽  
Water Environment ◽  
Oxidative Degradation ◽  
Environmental Risks ◽  
Important Process ◽  
Environmental Behaviors ◽  
Environmental Media ◽  
Different Types ◽  
Harmful Effects

Microplastics (MPs) are ubiquitous in environmental media, and their harmful effects on MPs on the ecosystem have attracted more and more attention. Once released into the environment, MPs can trigger oxidative degradation through ultraviolet (UV) to cause photoaging. Photoaging significantly affects the properties of MPs, which leads to changing their environmental behaviors and increasing environmental risks. In this review, the generation of MPs under UV irradiation and the influence of environmental factors on the photoaging of MPs were discussed. Photoaging of MPs is an important process affecting the migration, transformation and interaction of pollutants in water and soil. In order to fully predict the fate and environmental interaction of MPs, more researches are needed in the future to explore the photoaging behavior of different types of MPs under natural environmental conditions.

Influence of diamond-like carbon overlay properties on refractive index sensitivity of nano-coated optical fibres

2013 ◽  
Vol 210 (10) ◽  
pp. 2100-2105 ◽  
Author(s):  
Mateusz Śmietana ◽  
Mariusz Dudek ◽  
Marcin Koba ◽  
Bartosz Michalak
Keyword(s):  
Refractive Index ◽  
Diamond Like Carbon ◽  
Optical Fibres ◽  
Refractive Index Sensitivity ◽  
Index Sensitivity

scholarly journals Content of polymerised triacylglycerols in fat of fried foods

2016 ◽  
Vol 34 (No. 3) ◽  
pp. 211-216
Author(s):  
Mekhanoshina Liliya ◽  
Réblová Zuzana
Keyword(s):  
Refractive Index ◽  
Czech Republic ◽  
French Fries ◽  
The Czech Republic ◽  
Limit Value ◽  
Fat Extraction ◽  
Different Types ◽  
Fried Foods ◽  
Fried Potatoes ◽  
Refractive Index Detection

Polymerised triacylglycerols (TAG) were determined in the fat of 66 industrially produced fried foods (especially frozen pre-fried French fries, potato chips and other fried snacks) and 56 samples of French fries (and other forms of fried potatoes) prepared in restaurants, snack bars, and other catering establishments. All samples were purchased in the Czech Republic, especially in Prague, in the years 2012–2014. Polymerised TAG were determined by HP-SEC with refractive index detection, after the fat extraction with petroleum ether. While in none of the samples of industrially produced fried foods did the content of polymerised TAG in fat exceed the limit value of 12%, in French fries provided by different types of catering establishments this threshold was exceeded in 9 samples (i.e. approximately in 16% of the analysed samples).

Comparative Study of Triple-Clad Dispersion-Shifted, Dispersion-Flattened and Dispersion-Compensated Fiber for Broadband Optical Network Application

2016 ◽  
Vol 37 (2) ◽  
Author(s):  
Vikram Palodiya ◽  
Sanjeev Kumar Raghuwanshi
Keyword(s):  
Refractive Index ◽  
Comparative Study ◽  
Optical Fibers ◽  
Propagation Constant ◽  
Optical Network ◽  
Optical Characteristics ◽  
Match Method ◽  
Cylindrical Structure ◽  
Different Types ◽  
Network Application

AbstractIn this paper, comprehensive analyses of triple-clad fibers are presented. The geometry of multiple-clad fibers has been considered as a four-layer cylindrical structure. The geometry consists of a core and three claddings. We have analyzed and compared different types of triple-clad refractive index profiles on the basis of dispersion, mode distribution and propagation constant. To enhance the optical characteristics of these three fibers, we have developed a combined formulation which is applicable for single-clad, double clad and triple-clad optical fibers. In optical fibers, two or more claddings are required for dispersion shifting, dispersion flattening and other specialized applications. Thus, an analysis of design dispersion-shifted, dispersion-flattened and dispersion-compensated fibers is presented. We have used a boundary match method for evaluating propagation wave vectors and guided modes.

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