Modelling of gain profiles and Raman lasing in TiO2/GeO2-doped silica fibres

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
G. Felinskyi, V. I. Grygoruk, I. Serdeha
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引用次数: 3

Abstract

. We analyze Raman lasing bandwidth for TiO 2 -doped single-mode fibre as a function of pumping power, following from modelling of the gain profile, and compare it with that typical for an etalon Raman (GeO 2 -doped) fibre. The both Raman gain profiles are quantified using the spontaneous Raman cross-sections derived with an original spectroscopic method. Extremely high accuracy of the multimode Gaussian decomposition is obtained for the Raman gain profiles. As a result, the Raman gain profiles can be presented in analytical form. A threshold spectral Raman profile is introduced and the lasing bands in the both single-mode fibres are simulated numerically. We discuss also the advantages of TiO 2 -doped fibres as the active media for fibre Raman lasing and compare their characteristics with those of the other fibre types.
TiO2/ geo2掺杂二氧化硅光纤的增益曲线和拉曼激光建模
. 我们分析了tio2掺杂单模光纤的拉曼激光带宽作为泵浦功率的函数,根据增益曲线的建模,并将其与典型的标准子拉曼(GeO 2掺杂)光纤进行了比较。两种拉曼增益曲线都是用原始光谱法得到的自发拉曼截面来量化的。对拉曼增益谱获得了极高的多模高斯分解精度。因此,拉曼增益曲线可以用解析形式表示。引入了阈值拉曼谱,并对两种单模光纤中的激光带进行了数值模拟。我们还讨论了掺二氧化钛光纤作为光纤拉曼激光的活性介质的优点,并与其他类型光纤的特性进行了比较。
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
CiteScore
7.20
自引率
4.30%
发文量
567
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