Chalcogenide glass layers in silica photonic crystal fibers (original) (raw)
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Interfaces impact on the transmission of chalcogenides photonic crystal fibres
Journal of the Ceramic Society of Japan, 2008
In this work, we present the fabrication of chalcogenide photonic crystal fibres (PCFs) with a solid core for three different glass composition containing a variety of chalcogens. We show that the Stack and Draw technique currently used for silica PCFs can be problematic in the case of chalcogenides glasses. We prove that excess losses are related to the interface between the capillaries. We also present correct PCF design enables a significant improvement of final fibre losses. We obtained a lowest attenuation of 3 dB/m at 1.55 μm, of 4.5 dB/m at 3.39 μm and 6 dB/m at 9,3 μm.
Recent progress on the realization of chalcogenides Photonic Crystal Fibers
Proceedings of SPIE - The International Society for Optical Engineering, 2009
In this work, we review recent progress on the realization of chalcogenides Photonic Crystal Fibers (PCFs). We present the fabrication of chalcogenide PCFs with a solid core for three different glass compositions containing a variety of chalcogens. We show that the Stack and Draw technique currently used for silica PCFs can be problematic in the case of chalcogenides glasses. We present correct PCF design enables a significant improvement of final fiber losses. We obtained a lowest attenuation of 3 dB/m at 1.55 µm, of 4.5 dB/m at 3.39 µm and 6 dB/m at 9.3 µm. We also present experimental demonstration of self phase modulation spectral broadening around 1,55 µm. Moreover, we investigate the Brillouin and Raman scattering properties of a GeSbS PCF.
Flattened Dispersion of Hexagonal Chalcogenide As2Se3 Glass Photonic Crystal Fiber with a Large Core
International Journal of Soft Computing and Engineering (IJSCE), 2012
In this paper, we have proposed a novel structure of the fabrication of a chalcogenide As 2 Se 3 glass photonic crystal fiber (PCF) with increased core diameter. As comparision with the normal PCFs in which silica glass is used as core material, the proposed PCF has following feature; firstly we have used the chalcogenide As 2 Se 3 glass as core material in which the first ring area contains no air holes. Then the proposed PCF has a large core area chalcogenide As 2 Se 3 glass photonic crystal fiber. There are low chromatic dispersion in the proposed PCF comparied to normal As 2 Se 3 glass PCF. The chromatic dispersion is almost flat in the range of 2.4 micrometer to 4.0 micrometer range when the air hole diameter 'd' is 1.0 micrometer and air hole space '˄' is 2.0 micrometer. Index Terms-chalcogenide As 2 Se 3 glass, chromatic dispersion, photonic crystal fiber.
Journal of Modern Optics, 2020
In the paper, a spirally filled solid core chalcogenide-based photonic crystal fibre is proposed, which is engineered to obtain a flattened broad anomalous dispersion profile. The spectrum spanning in the wavelength region from 1.5 to 3.6 μm was achieved by pumping hyperbolic secant pulses with a peak power of 350 W and 85 fs pulse duration, at a wavelength of 2.5 μm, in the optimized design of the fibre. This chalcogenide-based photonic crystal fibre of length 100 mm can be used for wavelength converter between light and microwave. It can find its application as up-down link applications between light and microwave, the light-microwave transducer in LiFi, and WiFi links.
International Journal of Optics, 2013
Small core As 2 Se 3 -based photonic crystal fibers (PCFs) are accurately characterized for compact, high power, ultrabroadband, and coherent supercontinuum generation within few millimeters fiber length. Bandwidths of ∼5.3 m, 5 m, and 3.2 m were calculated for hole-to-hole spacings Λ = 3.5 m, 4.5 m, and 5.5 m, respectively. The spectral broadening in the chalcogenide PCF is mainly caused by self-phase modulation and Raman-induced soliton self-frequency shift. The results show that small core As 2 Se 3 PCFs are a promising candidate for mid-IR SCG up to ∼8 m.
Optics Communications, 2015
A new design of a triangular-core photonic crystal fiber in As 2 Se 3-based chalcogenide glass with allnormal, nearly zero flat-top dispersion has been proposed for supercontinuum generation. Simulated results indicate that ultra-broadband supercontinuum spanning 1.9-10 mm can be obtained using only 6 mm long PCF pumped with 50 femto-second laser pulses operated at 4.5 mm. In comparison to previously reported work we have obtained ultra-broadband supercontinuum spectra using relatively very low peak power of incident pulses. Proposed photonic crystal fiber structure is applicable in bio-molecular sensing and infrared spectroscopy.
Microstructured chalcogenide optical fibers from As(2)S(3) glass: towards new IR broadband sources
Optics express, 2010
The aim of this paper is to present an overview of the recent achievements of our group in the fabrication and optical characterizations of As(2)S(3) microstructured optical fibers (MOFs). Firstly, we study the synthesis of high purity arsenic sulfide glasses. Then we describe the use of a versatile process using mechanical drilling for the preparation of preforms and then the drawing of MOFs including suspended core fibers. Low losses MOFs are obtained by this way, with background level of losses reaching less than 0.5 dB/m. Optical characterizations of these fibers are then reported, especially dispersion measurements. The feasibility of all-optical regeneration based on a Mamyshev regenerator is investigated, and the generation of a broadband spectrum between 1 µm and 2.6 µm by femto second pumping around 1.5 µm is presented.
Raman Response of a Highly Nonlinear As 2 Se 3 -based Chalcogenide Photonic Crystal Fiber
We characterize the nonlinear propagation of ultra-short femtosecond pulses in a highly nonlinear As 2 Se 3 -based chalcogenide photonic crystal fiber (PCF). We propose an accurate fit of the Raman response function of the As 2 Se 3 chalcogenide glass in order to evaluate the effect of the stimulated Raman scattering on the supercontinuum (SC) generation in the PCF. We have investigated the interplay of the nonlinear effects leading to the SC generation as a function of the input power and the fiber length. The SC spanning from 1.9 µm to 4 µm was generated in 1-cm fiber length with 200 fs pulses at an input average power of 500 µW. The generation of the SC has mainly been attributed to the Raman effect which is responsible for the solitonic fission and the dispersive wave radiation.
Dispersion Analysis of Hexagonal Chalcogenide As2Se3 Glass Photonic Crystal Fiber
International Journal of Advances in Science and Technology, 2012
The work aims to reduce the dispersion in Photonic Crystal Fiber (PCF) using the Transparent Boundary Condition (TBC) and Scalar Effective Index Method (SEIM) the fundamental dispersion in a signal is extracted and plot of their respective negative, zero and flattened dispersion curve. Here, new hexagonal As2Se3 glass photonic crystal fiber is designed and proposed with seven layers.