scholarly journals The polymer converter for effectively connecting polymer with silica optical fibres

2016 ◽  
Vol 24 (3) ◽  
Author(s):  
P. Pura-Pawlikowska ◽  
M. Dudek ◽  
R. Wonko ◽  
P. Marć ◽  
M. Kujawińska ◽  
...  
Keyword(s):  
Light Beam ◽  
Mechanical Characteristics ◽  
Incident Light ◽  
Optical Power ◽  
Good Alternative ◽  
Optical Fibres ◽  
Incident Light Beam ◽  
Micrometer Size ◽  
Guiding Effect ◽  
Selection Of

AbstractWe present a micrometer-size polymer converter (microbridge) for connecting polymer optical fibres with silica fibres. The procedure of preparing such microstructure is based on a process of photopolymerization. A polymer converter grows as an extension of the fibres’ cores due to a self-guiding effect of the light beam in a photopolymerizable medium. Since the polymer microbridge has refractive index greater inside than outside, such a structure works as a waveguide leading the light beam between connected optical fibres. By selection of time of light exposition to the mixture and optical power of the incident light beam, it is possible to obtain a polymer converter with very good optical and mechanical characteristics. Possibility of using polymer microbridges grown directly from the fibres’ core as coupling elements between silica and polymer fibres is a good alternative for obtaining permanent coupling of such fibres.

Excitation of a ridge waveguide by a normally incident light beam

1995 ◽  
Vol 25 (6) ◽  
pp. 582-586 ◽  
Author(s):  
O Parriaux ◽  
V A Sychugov ◽  
A V Tishchenko
Keyword(s):  
Light Beam ◽  
Incident Light ◽  
Ridge Waveguide ◽  
Incident Light Beam

Enhancement of diffraction efficiency for optical gratings

2000 ◽  
Vol 78 (5-6) ◽  
pp. 537-542
Author(s):  
G Z Zhang
Keyword(s):  
Light Beam ◽  
Diffraction Efficiency ◽  
Beam Energy ◽  
Incident Light ◽  
Glass Plate ◽  
Air Gap ◽  
Multiple Reflection ◽  
Input Beam ◽  
Incident Light Beam ◽  
Optical Gratings

A method to increase the diffraction efficiency for optical gratings is proposed. Using a simple glass plate sitting parallel to the top of a grating surface, one can form an air gap between the surfaces of the grating and the glass plate to reflect a grazing-incident light beam and make diffraction through multiple reflection of the beam between the grating and glass plate surfaces. As a result, this device can efficiently enhance the grating efficiency by diffracting the input beam energy into various diffraction orders. PACS Nos.: 07.60-j, 42.25Fx, 42.40Lx, 42.79Dj, 42.40Fg

scholarly journals Spatial light modulators

Photoniques ◽  
2020 ◽  
pp. 59-64
Author(s):  
Aurélie Jullien
Keyword(s):  
Light Beam ◽  
Technological Development ◽  
Incident Light ◽  
Spatial Light Modulators ◽  
Incident Light Beam ◽  
Light Modulators ◽  
Spatial Dimensions ◽  
The Subject

Spatial Light Modulators (SLMs) are quasiplanar devices, allowing for the modulation of the amplitude, phase and polarization, or a combination of these parameters of an incident light beam according to the two spatial dimensions of the modulator. SLMs are employed in many different fields and are the subject of continuous technological development.

Quality Assessment of Weldable Steel Mark P355NH from Decompression Chamber Construction for Diving

2012 ◽  
Vol 217-219 ◽  
pp. 2381-2387
Author(s):  
Doru Romulus Pascu ◽  
Radu Alexandru Roşu ◽  
Iuliana Duma ◽  
Horia Daşcău
Keyword(s):  
Test Temperature ◽  
Transverse Direction ◽  
Mechanical Characteristics ◽  
Longitudinal Direction ◽  
Pressure Vessels ◽  
Fine Grained ◽  
Weldable Steel ◽  
Breaking Energy ◽  
Fine Grained Steels ◽  
Selection Of

Non-alloyed P355NH steel according to EN 10028-3:2003 belongs to a group of fine-grained steels for pressure vessels being used in welded construction at decompression chamber for divers. Values of the chemical, structural and mechanical characteristics and steel toughness experimentally determined fit the analyzed steel in P355NH steel group according to EN 10028-3:2003. The toughness of the analyzed steel at the test temperature of -30°C is characterized by high values of fracture energy KV in longitudinal direction between 48 and 86 J and on transverse direction between 17 and 34J. Steel toughness at the test temperature of -30°C required by ABS standard (in Section 4/5.3 and Table 1) provides for breaking energy KV of min. 35J, with ductile fracture surfaces, value that is not respected at some lots of the three batches (A, B, C) of steel. Finally, based on the direct correlation established between HV10 hardness of the fine structure and the toughness it was made a selection of the lots of non-alloy steel P355NH which correspond to ABS norm for welded construction of the decompression chamber for divers

scholarly journals Application of Multi-Criteria Analysis in the Selection of Individual Sewage Treatment Plants

2021 ◽  
Vol 9 (1) ◽  
pp. 27
Author(s):  
Natalia Taraszkiewicz
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Good Alternative ◽  
Living Standards ◽  
Biological Wastewater Treatment ◽  
Daily Lives ◽  
Sewage Treatment Plants ◽  
Sewage Systems ◽  
Selection Of

The development of sewage systems leads to an increase in people’s living standards and an improvement in the comfort of their daily lives. In 2021, the use of septic tanks is still a big issue; many of them are not properly sealed and can be harmful to the environment because of leakage. A good alternative for them is an individual sewage treatment plant. There are many types of such investment. This paper focuses on the selection between three types of sewage treatment plants (a biological wastewater treatment plant with activated sludge and a constructed wasteland) using MCDA–AHP and TOPSIS methods.

Understanding Nasheed for Learning Strategy in Islamic Education

2020 ◽  
pp. 205-218
Author(s):  
Muhammad Talhah Ajmain ◽  
Jimaain Safar ◽  
Ahmad Kilani Mohamed ◽  
Miftachul Huda
Keyword(s):  
21St Century ◽  
Teaching Methods ◽  
Confidence Level ◽  
Teaching And Learning ◽  
Learning Strategy ◽  
Good Alternative ◽  
Islamic Education ◽  
High Interest ◽  
Teaching Objectives ◽  
Selection Of

Nashid is one of various teaching methods and facilitator (PdPc). Teenagers nowadays are full of interest in entertainment in the form of songs and singing, and a good alternative is to bring them to God. Thus, this paper will be debating nashid as medium of education and missionary, nashid as a method of teaching and facilitating, the effectiveness of the method, and its implementation in teaching and learning. Aspects of creativeness in education are required in the 21st century. Nashid method is able to help students memorize facts and important things, strengthen memory, create high interest, build excitement, improve motivation and concentration, and enhance the confidence level among students. It will bring about a holistic student. However, the selection of the appropriate nashid must be considered to make sure the teaching objectives are achieved. Thus, teachers in Islamic teaching must look at this method as one of the important methods and apply it in their teaching and facilitating process.

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