Mid-Infrared Supercontinuum Generation in Highly Nonlinear Chalcogenide Fibers

Q4 Engineering

International Journal of High Speed Electronics and Systems Pub Date : 2024-07-17 DOI:10.1142/s0129156424400603

Ashiq Rahman, Niloy K. Dutta

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引用次数: 0

Abstract

Interest in mid-infrared broadband laser light sources has surged due to applications in trace gas detection, free-space communications, and countermeasures. Progress in supercontinuum generation leverages fiber-based near-infrared and bulk-optic mid-infrared pump sources. In this paper, the Generalized Nonlinear Schrödinger Equation has been solved, using the Split Step Fourier Method, to simulate the pulse propagation and mid-infrared supercontinuum generation, inside a fiber composed of highly nonlinear As2Se3/As2S3 chalcogenide glass. The effect of various parameters, including fiber nonlinearity, Group Velocity Dispersion (GVD), input power and pulse-width, anomalous and normal dispersion pumping regime, etc. on the output supercontinuum bandwidth has been extensively studied. A tapered chalcogenide fiber is modeled to facilitate continuous simultaneous modification of the GVD and the Kerr nonlinearity parameter. Pumping the waveguides with 230-fs secant pulses at a peak power of 4.2-kW yields a mid-IR supercontinuum extending from [Formula: see text] to [Formula: see text] micrometers.

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高非线性卤化物光纤中的中红外超连续发生

由于中红外宽带激光光源在痕量气体检测、自由空间通信和反制等方面的应用，人们对它的兴趣急剧上升。利用基于光纤的近红外和 bulk-optic 中红外泵浦源在超连续产生方面取得了进展。本文利用分步傅里叶法求解了广义非线性薛定谔方程，模拟了由高非线性 As2Se3/As2S3 氯化玻璃组成的光纤内的脉冲传播和中红外超连续发生。我们广泛研究了各种参数对输出超连续带宽的影响，包括光纤非线性度、群速色散（GVD）、输入功率和脉冲宽度、反常和正常色散泵浦机制等。为了便于同时连续地修改 GVD 和 Kerr 非线性参数，我们对锥形卤化物光纤进行了建模。用峰值功率为 4.2 千瓦的 230 fs 秒脉冲泵浦波导，可产生从[公式：见正文]到[公式：见正文]微米的中红外超连续。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of High Speed Electronics and Systems Engineering-Electrical and Electronic Engineering

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： Launched in 1990, the International Journal of High Speed Electronics and Systems (IJHSES) has served graduate students and those in R&D, managerial and marketing positions by giving state-of-the-art data, and the latest research trends. Its main charter is to promote engineering education by advancing interdisciplinary science between electronics and systems and to explore high speed technology in photonics and electronics. IJHSES, a quarterly journal, continues to feature a broad coverage of topics relating to high speed or high performance devices, circuits and systems.