All-Fiber ultraflat supercontinuum generation in photonic crystal fibers covering 492.4 − 2009.8 nm with 3-dB bandwidth

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-04-28 DOI:10.1016/j.optlastec.2025.113051

Tianxing Wang , Shizi Yu , Zuyao Liu , Meisong liao , Lidong Wang , Dongyu He , Lili Hu , Shubin Chen , Weiqing Gao

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Abstract

In this study, a new approach for realizing all-fiber ultraflat supercontinuum (SC) generation is proposed. The proposed method combines the efficient coupling principles between solitons and dispersive waves (DWs) with spectral filtering. After a series of calculations and simulations, the end-face structure of sample #2 is selected for photonic crystal fiber (PCF) drawing. Ultraflat SC generation is achieved by employing a 3.06 W-pumped 10-m PCF combined with long-period grating-assisted spectral filtering techniques. The 3-dB bandwidth extends to 1517.4 nm (492.4 − 2009.8 nm), spanning an optical octave of 2.02 and thus representing the largest optical octave reported for an all-fiber SC source with a 3-dB bandwidth. In this work, shorter highly nonlinear fibers and simpler pumping techniques are used compared with conventional ultraflat SC generation methods. This compact and robust configuration provides an alternative solution for multiwavelength spectroscopy, hyperspectral radar imaging, and optical clock systems.

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在覆盖492.4 ~ 2009.8 nm，带宽为3db的光子晶体光纤中产生全光纤超平坦超连续谱

本研究提出了一种实现全光纤超平坦超连续介质（SC）生成的新方法。该方法将孤子与色散波的有效耦合原理与谱滤波相结合。经过一系列的计算和模拟，选择样品2的端面结构进行光子晶体光纤（PCF）拉伸。通过采用3.06 w泵浦的10 m PCF结合长周期光栅辅助光谱滤波技术，实现了超扁平SC的产生。3db带宽扩展到1517.4 nm (492.4 ~ 2009.8 nm)，跨越2.02的光倍程，因此代表了具有3db带宽的全光纤SC源的最大光倍程。在这项工作中，与传统的超扁平SC生成方法相比，使用了更短的高度非线性光纤和更简单的泵送技术。这种紧凑而坚固的配置为多波长光谱、高光谱雷达成像和光学时钟系统提供了另一种解决方案。

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

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems