A model describing ray propagation in both the core and cladding regions of a multimode optical fibre is developed. This model is then used to determine the influence of the fibre outer protective sheath on far-field measurements and to determine the equilibrium source conditions for the modified...
The optical fiber is composed of a light-carrying core surrounded by a cladding and a plastic protective jacket used to protect the optical fiber from physical damage, as shown in Fig. 10.1A. One of the main functions of the cladding is to decrease the loss of light from the core to the...
purequartz,anotheristhatthecladdingthicknessisgreatly reduced.Theinfluenceofthefirstdifferentpointonthe fiber loss is obvious, and what influence will come about the loss of fibre brought by another different point? We want to be quite clear on this point, make it clear, we ...
The fictive temperatures of single-mode optical-fiber core, along with its inner and outer cladding, were measured using an infrared (IR) reflection method on the fiber cross-sectional surface. To allow for usage of a larger IR beam size than the diameter of the fiber core, the cross-sectio...
The fibre is jacketed with low-index glass and tapered to form the core and cladding of a MM fibre, giving a monolithic FBG filter with conventional MM ports. Such a device can stand alone, or be incorporated into more elaborate instruments. 展开 ...
in a fiber, this should not be possible: normally, the refractive index of the fiber core has to be higher than that of the surrounding cladding material, and there is no way of obtaining a refractive index of glass below that of air or vacuum, at least in the optical spectral region....
1.11, an MCF has more design freedom in core structure, core count, core layout, outer cladding thickness (OCT: the minimum distance between the outmost core center and the cladding–coating interface), and cladding/coating diameters. These parameters, of course, affect optical/mechanical ...
展开 关键词: fibre optic sensors optical fibre cladding optical fibre communication optical fibre dispersion optical fibres optical modulation silicon compounds 会议名称: International Conference on Electrical Engineering 主办单位: Institute of Advanced Engineering and Science 收藏...
2.2. Optical properties A fully automated Metricon, model 2010 prism coupled refractometer was used to measure the refractive index of 2 mm thick glass samples of bulk core and cladding glass samples at 1060 nm. The accuracy of the measurement was ±0.0001. The samples were polished with ...
摘要: A Kagome-lattice hollow-core photonic crystal fiber with a hypocycloid-shaped core enhances the coupling-inhibition between the core- and cladding-modes, thus providing an optical attenuation <;250dB/km. This rivals the state-of-the-art photonic bandgap hollow-core fibers is demonstrated....