Confinement loss

A novel Ge15As15Se17Te53 chalcogenide-based photonic crystal fiber with an octagonal cladding was designed which exhibits low confinement loss and high nonlinearity. The dispersion properties were investigated over a wide wavelength range of up to 11 µm.

11p viambani 18-06-2024 1 1   Download

In this work, we design circular lattice photonic crystal fibers using Lumerical Mode Solution software, its hollow core filled with carbon tetrachloride. Optical properties including effective refractive index, chromatic dispersion, nonlinearity, and fiber loss were investigated numerically in detail based on solving Maxwell's wave equations.

14p viambani 18-06-2024 2 1   Download

In this work, the dispersion properties and nonlinear properties of circular photonic crystal fibers were improved by a combination of carbon tetrachloride infiltration into the core and modification of the air hole diameters d1 and d2 of rings in the cladding.

16p viamancio 04-06-2024 1 0   Download

This paper presents a new design of Ge20Sb5Se75 large-solid-core- square lattice photonic crystal fiber (PCF) with the first ring of air hole near the core removed. Using the full vector finite element method for anisotropic perfectly matched layers, we numerically examine the dispersion characteristics of the PCF as a function of the wavelength in the mid-infrared range.

10p dianmotminh02 03-05-2024 3 1   Download

Characteristics of As2Se3 photonic crystal fibers (PCFs) with a solid-core and small-core diameter are numerically investigated in the long-wavelength range (from 2 to 10 μm). The flat dispersion feature, high nonlinearity, and small confinement loss of the proposed photonic crystal fiber structure make it suitable for supercontinuum.

10p vispiderman 15-06-2023 4 2   Download

Mango (Mangifera indica L.) is an important fruit crop in India and honored as king of fruit in the country. Among the several abiotic and biotic factors, mango malformation is the most serious disease causes up to 60 per cent yield losses and confines the mango cultivation in tropical and subtropical countries of the worldwide. Mango malformation expresses two types of symptoms on plant i.e. vegetative and floral malformation, in which floral malformation is very virulent and causes the loss of entire crop than the vegetative one.

17p chauchaungayxua11 23-03-2021 6 1   Download

The characteristics of photonic crystal fibers (PCFs) with various air hole diameters infiltrated with alcoholic liquids such as ethanol, methanol, propanol and butanol are numerically investigated. Based on the numerical results, we have analyzed and compared in detail the characteristics of these fibers including effective refractive index, effective mode area, dispersion and confinement loss for two sets of parameters {d,Λ} = {1 µm,5 µm} and {1.42 µm, 3.26 µm}, with d the air hole diameter and Λ the lattice constant, respectively.

12p nguyenxuankha_bevandan 14-08-2020 22 4   Download

Metamaterial (MM) is emerging as a promising approach to manipulate electromagnetic waves, spanning from radio frequency to the optical region. In this paper, we employ an effect called electromagnetically-induced transparency (EIT) in all-dielectric MM structures to create a narrow transparent window in opaque broadband of the optical region (580-670 nm). Using dielectric materials instead of metals can mitigate the large non-radiative ohmic loss on the metal surface.

8p nguyenxuankha_bevandan 14-08-2020 13 1   Download

In this paper, we report a numerical calculation of the influence of structural parameters on the supercontinuum generation of photonic crystal fibers. A photonic crystal fiber based on the fused silica glass, eight rings of air holes ordered in a hexagonal lattice, is proposed. Guiding properties in terms of dispersion and confinement loss of the fundamental mode are also studied numerically. As a result, the broadband width of the supercontinuum spectrum will increase when the lattice pitch decreases or the diameter of air hole in the cladding increases.

8p kethamoi6 01-07-2020 27 3   Download

An arid region is an area characterized by a severe lack of available water, to the extent of hindering or preventing the growth and development of plant and animal life. The cold arid region in Jammu and Kashmir is confined to Ladakh region, geographically located between 320 15’ to 360 north latitude and &750 15’ to 800 15’ east longitude. Due to its high altitude, the climate is extremely cold and dry. On an average soil loss from India land surfaces is 16 t/ha/year.

6p kethamoi6 29-06-2020 10 2   Download

Heat stress is a form of non fever hyperthermia occurs when heat load exceeds than the heat loss from the body. The body temperature reaches above 105 – 106˚ F, often complicated by changes in other body system such as acid-base balance, kidney, liver, cerebral edema and blood clotting mechanism. More common in brachycephalic breeds, long thick hairy breeds, young ones and aged animals. Physical examination is marked by excessive hyperemia, panting, hypersalivation, tachycardia, and various neurologic signs.

7p quenchua2 16-12-2019 19 0   Download

Simple, efficient and practical CO2 capture method is reported using task-specific ionic liquid (IL) supported onto the amine-functionalized silica gel. The results have been shown that both the capacity and rate of the CO2 absorption notably increase in the supported IL/molecular sieve 4 A˚ system in comparison of homogeneous IL. Additionally, it has shown that the prepared material is capable for reversible carbon dioxide absorption for at least 10 cycles without significant loss of efficiency.

7p trinhthamhodang1 16-11-2019 11 1   Download

In this paper, we present a numerical simulation of the properties of a photonic crystal fiber (PCF) made of borosilicate glass infiltrated by the water-ethanol mixture. We examine the influence of temperature and ethanol concentration for the refractive index, dispersion properties, effective mode area and confinement loss of the fundamental mode by a Lumerical simulation method.

13p thuyliebe 08-10-2018 37 0   Download

In the following pages I have attempted to trace certain developments in the theory of translation as it has been formulated by English writers. I have confined myself, of necessity, to such opinions as have been put into words, and avoided making use of deductions from practice other than a few obvious and generally accepted conclusions.

101p nhokheo9 06-05-2013 84 13   Download