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2014314 · The blue curve is for the total (Parallel + Perpendicular) scattering of light. The absolute value of the total peak gain coefficient in this curve is 1.046x10-11 cm/W at a frequency shift of 440 cm-1. (13.2 THz), with 1.0 micron Stokes wavelength and second gain peak is at about 490 cm-1 (14.7 THz) frequency shift.
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2020717 · As a kind of carbon fiber-rich material, the machined surface quality of Cf/SiC composites is greatly affected by the fracture mode of carbon fibers. Therefore, exploring the material removal mechanism of Cf/SiC composites in grinding through the different fracture mechanisms of carbon fibers from the perspective of microstructure is …
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Photonic crystal-based optical devices for photonic intergraded circuits. S. Robinson, V.R. Balaji, in Micro- and Nanotechnology Enabled Applications for Portable Miniaturized Analytical Systems, 2022 10.7.8 Photonic crystal fiber. Photonic crystal fiber (PCF) is a new class of optical fiber based on the properties of PCs. Because of its ability to confine light …
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2024130 · Optical fiber dispersion, a critical factor in fiber-optic communication systems, refers to the broadening of visual signals as they travel through an optical fiber. This phenomenon results from the different speeds at which various light wavelengths propagate within the fiber, leading to signal degradation over long distances.
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Optical fibers can have different transverse refractive index profiles. Apart from such fibers where light is guided at the air–glass interface, the simplest index profile is a rectangular one, where the refractive index is constant within the fiber core, and is higher than in the cladding.Fibers of that kind are called step-index fibers.That term also includes designs …
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201051 · On the basis of water solubility, DF can be divided into insoluble and soluble fiber. As shown in Table 1, the TDF content of wheat bran was more than 80%, which reveals that the DF prepared by enzymatic method has a fairly high purity.The decrease of TDF content after ultrafine grinding is caused by the degradation of hemicellulose, …
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20001115 · LPFGs with positive- and negative-index modulation were fabricated by irradiating two different kinds of B 2 O 3-doped fibers with the focused CO 2 laser beam to release the residual stress in the fibers as shown in Fig. 1 [4]. The fiber preform was fabricated using the modified chemical vapor deposition method and the fiber was drawn …
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2024227 · A novel mode-locking method based on nonlinear multimode interference (NLMI) using a distributed large-core (105 μm) graded-index multimode fiber (GIMF)-based saturable absorber (SA) capable of generating four pulse modes is proposed. The distributed SA geometry consists of two GIMFs located at different positions in the resonant cavity. …
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Two-layer step-index fibers have well-known cutoff solutions, while cutoff solutions for three-layer step-index fiber exist for only one geometry (ring fiber). We derive exact expressions for cutoff frequencies of both vector and scalar modes for all geometries of three-layer step-index fibers. While vector modes have been solved for these fibers, to the best of our …
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2022612 · Side polished fiber (SPF) has a controllable average roughness and length of the side-polishing region, which becomes a versatile platform for integrating multiple materials to interact with the evanescent field to fabricate all-fiber devices and sensors. It has been widely used in couplers, filters, polarizers, optical attenuators, photodetectors, …
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