Comparative study of supercontinuum spectra generated by As2S3 chalcogenide photonic crystal fibers with different lattice types

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2025-01-03 DOI:10.1007/s11082-024-08013-y

Ben Chu Van, Trong Dang Van, Lanh Chu Van

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Abstract

Three distinct configurations of As₂S₃ chalcogenide photonic crystal fibers (PCFs) were designed to investigate supercontinuum generation (SCG). The optical properties of PCFs with the circular lattice (CL), square lattice (SL), and hexagonal lattice (HL) were comprehensively analyzed to choose the optimal fiber for SCG. This investigation facilitated the identification of three superior structures, specifically designated as #CF, #SF, and #HF, respectively. These structures are unified by operating within an all-normal dispersion regime, each presenting a lattice constant of 1.0 μm and a filling factor of 0.35. These fibers were subjected to a peak power of 4.0 kW and a pulse duration of 270 fs, culminating in an expansive supercontinuum range. Notably, the SC range extended from 2.0 to 6.5 μm for #CF, from 2.0 to 8.3 μm for #SF, and from 1.9 to 6.6 μm for #HF. The SL-PCF exhibited the broadest supercontinuum, attributed to its protracted flat dispersion band. Furthermore, compared to previously reported all-normal dispersion PCFs, the spectral range facilitated by this peak power was significantly augmented. These optical fibers promise to provide supercontinuum spectra with broad bandwidth for practical applications in sensing and gas detection.

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不同晶格类型As2S3硫系光子晶体光纤超连续谱的比较研究

设计了三种不同配置的As2S3硫系光子晶体光纤（PCFs）来研究超连续谱的产生。综合分析了圆晶格（CL）、方晶格（SL）和六角形晶格（HL）的聚苯乙烯光纤的光学特性，选择了用于聚苯乙烯光纤的最佳光纤。这项调查有助于确定三个优越的结构，分别被指定为#CF， #SF和#HF。这些结构通过在全正常色散范围内运行而统一，每个结构的晶格常数为1.0 μm，填充系数为0.35。这些光纤的峰值功率为4.0 kW，脉冲持续时间为270 fs，最终达到了一个扩展的超连续范围。值得注意的是，#CF的SC范围从2.0到6.5 μm， #SF的SC范围从2.0到8.3 μm， #HF的SC范围从1.9到6.6 μm。SL-PCF表现出最宽的超连续谱，这是由于其较长的平坦色散带。此外，与先前报道的全正常色散PCFs相比，该峰值功率促进的光谱范围显着增加。这些光纤有望为传感和气体检测的实际应用提供具有宽带宽的超连续光谱。

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.