scholarly journals Realization of optical fibers terminated with ball lenses

2016 ◽  
Vol 64 (2) ◽  
pp. 279-282
Author(s):  
B. Guzowski ◽  
Z. Lisik ◽  
G. Tosik
Keyword(s):  
Optical Fibers ◽  
University Of Technology ◽  
Different Types

Abstract In this article the process of realization of ball-lensed optical fibers is described. The implementation of four different types of ball-lensed optical fibers developed in Optical Fibers Techniques Laboratory at Lodz University of Technology is presented. Focal lengths of the presented microlenses, which were obtained in simulations and measurements, are also shown in this paper.

scholarly journals Nano-Structured Optical Fibers Made of Glass-Ceramics, and Phase Separated and Metallic Particle-Containing Glasses

Fibers ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 105 ◽  
Author(s):  
Alexander Veber ◽  
Zhuorui Lu ◽  
Manuel Vermillac ◽  
Franck Pigeonneau ◽  
Wilfried Blanc ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Optical Fibers ◽  
Metallic Nanoparticles ◽  
Glass Ceramics ◽  
Optical Quality ◽  
High Optical Quality ◽  
Characterization Methods ◽  
Different Types ◽  
Fabrication And Characterization ◽  
Materials Used

For years, scientists have been looking for different techniques to make glasses perfect: fully amorphous and ideally homogeneous. Meanwhile, recent advances in the development of particle-containing glasses (PCG), defined in this paper as glass-ceramics, glasses doped with metallic nanoparticles, and phase-separated glasses show that these “imperfect” glasses can result in better optical materials if particles of desired chemistry, size, and shape are present in the glass. It has been shown that PCGs can be used for the fabrication of nanostructured fibers—a novel class of media for fiber optics. These unique optical fibers are able to outperform their traditional glass counterparts in terms of available emission spectral range, quantum efficiency, non-linear properties, fabricated sensors sensitivity, and other parameters. Being rather special, nanostructured fibers require new, unconventional solutions on the materials used, fabrication, and characterization techniques, limiting the use of these novel materials. This work overviews practical aspects and progress in the fabrication and characterization methods of the particle-containing glasses with particular attention to nanostructured fibers made of these materials. A review of the recent achievements shows that current technologies allow producing high-optical quality PCG-fibers of different types, and the unique optical properties of these nanostructured fibers make them prospective for applications in lasers, optical communications, medicine, lighting, and other areas of science and industry.

Construction of optical soliton solutions of the generalized nonlinear Radhakrishnan–Kundu–Lakshmanan dynamical equation with power law nonlinearity

2020 ◽  
Vol 34 (13) ◽  
pp. 2050139 ◽  
Author(s):  
Aly R. Seadawy ◽  
Sultan Z. Alamri ◽  
Haya M. Al-Sharari
Keyword(s):  
Optical Fibers ◽  
Dynamical Equation ◽  
Physical Phenomenon ◽  
Soliton Solutions ◽  
Optical Soliton ◽  
Solitary Wave Solutions ◽  
Light Pulses ◽  
Wave Solutions ◽  
Different Types ◽  
Modified Simple Equation Method

The propagation of soliton through optical fibers has been studied by using nonlinear Schrödinger’s equation (NLSE). There are different types of NLSEs that study this physical phenomenon such as (GRKLE) generalized Radhakrishnan–Kundu–Lakshmanan equation. The generalized nonlinear RKL dynamical equation, which presents description of the dynamical of light pulses, has been studied. We used two formulas of the modified simple equation method to construct the optical soliton solutions of this model. The obtained solutions can be represented as bistable bright, dark, periodic solitary wave solutions.

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.

Study on acoustic environment of canteens in South China University of Technology

2021 ◽  
Vol 263 (5) ◽  
pp. 1695-1702
Author(s):  
Ziyu Zhou ◽  
Hongwei Wang
Keyword(s):  
South China ◽  
Sound Pressure Level ◽  
Sound Pressure ◽  
Pressure Level ◽  
Noise Sources ◽  
Acoustic Environment ◽  
University Of Technology ◽  
Different Types ◽  
Satisfaction Evaluation ◽  
The Voice

In order to understand the characteristics of the acoustic environment of University canteens, the canteens of South China University of Technology were selected as the research objects, and the acoustic parameters were measured on the spot and the questionnaire survey was conducted. The results show that the average sound pressure level of restaurants with smaller area is lower than that of restaurants with larger area, and the sound pressure level of dining space first increases rapidly, then increases slowly, and finally remains unchanged with the increase of the number of diners. In the aspect of restaurant acoustic environment satisfaction evaluation, the space with the smallest dining area has the highest acoustic environment satisfaction evaluation level, and the collision sound of tableware collection and table and chair moving has the highest correlation with the acoustic environment satisfaction evaluation. In terms of different types of noise sources, diners think that the most disturbing noise for conversation is the voice of the surrounding people, followed by the collision of tables and chairs and the collection of tableware, and the least disturbing noise is the noise of air conditioning and kitchen equipment.

scholarly journals Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

Photonics ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 36 ◽  
Author(s):  
Rui Min ◽  
Beatriz Ortega ◽  
Carlos Marques
Keyword(s):  
Optical Fibers ◽  
Optical Communications ◽  
State Of The Art ◽  
Polymer Optical Fiber ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Gratings ◽  
Different Types ◽  
Potential Applications ◽  
Polymer Optical Fibers

Grating devices in polymer optical fibers (POFs) have attracted huge interest for many potential applications in recent years. This paper presents the state of the art regarding the fabrication of different types of POF gratings, such as uniform, phase-shifted, tilted, chirped, and long period gratings, and explores potential application scenarios, such as biosensing and optical communications.

γ‐radiation resistance of aluminum‐coated all‐silica optical fibers fabricated using different types of silica in the core

1996 ◽  
Vol 69 (3) ◽  
pp. 322-324 ◽  
Author(s):  
D. L. Griscom ◽  
K. M. Golant ◽  
A. L. Tomashuk ◽  
D. V. Pavlov ◽  
Yu. A. Tarabrin
Keyword(s):  
Optical Fibers ◽  
Radiation Resistance ◽  
Γ Radiation ◽  
The Core ◽  
Different Types

Total Harmonic Distortion Assessment of 17kWp Grid Connected Photovoltaic Systems

2015 ◽  
Vol 785 ◽  
pp. 435-439
Author(s):  
Abdul Haris Faranadia ◽  
Ahmad Maliki Omar
Keyword(s):  
Power Systems ◽  
Harmonic Distortion ◽  
Green Energy ◽  
Total Harmonic Distortion ◽  
Climate Variations ◽  
Energy Research ◽  
University Of Technology ◽  
Different Types ◽  
Mathcad Software ◽  
Good Agreement

This paper presents prediction of total harmonic distortion (THD) on Grid Connected Photovoltaic (GCPV) power systems towards Malaysia climate variations (solar irradiance) by using Mathematical approach. The actual and prediction data measurement were analyzed on three types of solar cell technologies; monocrystalline, polycrystalline and thin film. Each PV array works with different types of inverters which are located at Green Energy Research Center (GERC), University of Technology MARA (UiTM) Shah Alam, Selangor. The prediction and detail analysis of total harmonic distortion is carried out by using MathCAD software. The results obtained show good agreement between prediction and actual data.

scholarly journals Evanescent Field Enhancement in Liquid Crystal Optical Fibers: A Field Characteristics Based Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
P. K. Choudhury
Keyword(s):  
Liquid Crystal ◽  
Optical Fibers ◽  
Electromagnetic Wave Propagation ◽  
Optical Axis ◽  
Field Enhancement ◽  
Liquid Crystal Material ◽  
Te Mode ◽  
Anisotropic Liquid ◽  
Different Types ◽  
Very High

The paper presents the analysis of the electromagnetic wave propagation through liquid crystal optical fibers (LCOFs) of two different types—conventional guides loaded with liquid crystals (addressed as LCOFs) and those with additional twists due to conducting helical windings (addressed as HCLCOFs). More precisely, the three-layer optical waveguide structures are considered along with its outermost region being loaded with radially anisotropic liquid crystal material and the inner regions being made of usual silica, as used in conventional optical fibers. In addition to that, LCOF with twists introduced in the form of conducting helical windings at the interface of the silica core and the liquid crystal clad is also taken into account. Emphasis has been put on the power confinements by the lower-order TE modes sustained in the different sections of the LCOF structure. The results demonstrate useful applications of these guides in integrated optics as the power sustained in the liquid crystal section by the excited TE modes remains very high. In the case of twisted clad liquid crystal guides, descriptions are limited to the nature of dispersion relation only under the TE mode excitation, and corresponding to the cases of helix orientations being parallel and perpendicular to the optical axis.

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