在砷硫化物纤芯光子晶体光纤中产生1.55微米的超连续谱。

Supercontinuum generation at 1.55 μm in AsS core photonic crystal fiber.

作者信息

Balani Harshul, Singh Ghanshyam, Tiwari Manish, Janyani Vijay, Ghunawat Ashish Kumar

出版信息

Appl Opt. 2018 May 1;57(13):3524-3533. doi: 10.1364/AO.57.003524.

DOI:10.1364/AO.57.003524

Abstract

This paper proposes a design and mathematical study of AsS chalcogenide photonic crystal fiber (PCF) for broadband supercontinuum generation. The proposed design offers a large nonlinearity coefficient and ultra-flattened dispersion. The proposed design was analyzed using the full-vectorial finite element method. Through this method, it is shown that an ultra-broad supercontinuum spectrum of 0.8-4.5 μm is attained using an AsS core PCF design with 20 fs pump pulse width and a length of 10 mm, having 3 kW power at a -40 dB spectral and temporal intensity. The proposed octagonal PCF has shown a low zero dispersion wavelength at the pump wavelength of 1.55 μm.

摘要

本文提出了一种用于宽带超连续谱产生的硫化砷硫系光子晶体光纤（PCF）的设计及数学研究。所提出的设计具有较大的非线性系数和超平坦色散。采用全矢量有限元方法对所提出的设计进行了分析。通过该方法表明，使用具有20 fs泵浦脉冲宽度、10 mm长度、在-40 dB光谱和时间强度下功率为3 kW的硫化砷纤芯PCF设计，可获得0.8 - 4.5μm的超宽超连续谱。所提出的八角形PCF在1.55μm泵浦波长处显示出较低的零色散波长。