Accurate and efficient inscription of fiber Bragg gratings in double-clad ytterbium doped fiber based on femtosecond phase mask technology

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-09-14 DOI:10.1016/j.optlastec.2024.111775

Xinyu Ye , Hao Li , Meng Wang , Chenhui Gao , Binyu Rao , Baiyi Wu , Rong Zhao , Qiushi Qin , Zhixian Li , Zilun Chen , Zefeng Wang

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引用次数: 0

Abstract

The direct inscription of fiber Bragg gratings (FBGs) in double-clad ytterbium-doped fiber (DCYDF) by fs-laser has the potential to reduce the fusion splices in fiber lasers, which is significant for developing a more compacted and stable monolithic laser system. This study demonstrates that the distinctive inner-cladding structure of DCYDF has a non-negligible influence on the focal position and intensity of the fs-laser. To realize accurate and efficient inscription of FBGs, the fs-laser is controlled to incident at a specific angle based on direct imaging of the DCYDF, and the focus of the fs-laser is determined for the first time using the 1 μm photoluminescence attributed to Yb³⁺ under fs-laser excitation, to the best of our knowledge. The results provide new insights into the influence of the cladding structure on the inscription process of FBGs and its influence on the characteristics of FBGs. This paper presents an accurate and efficient method for inscribing fiber Gragg gratings in DCYDF (YDFBGs), which is of great significance for the fabrication and application of FBGs.

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基于飞秒相位掩模技术在双包层掺镱光纤中精确高效地刻划光纤布拉格光栅

利用fs激光在双包层掺镱光纤（DCYDF）中直接刻画光纤布拉格光栅（FBG），有望减少光纤激光器中的熔接环节，这对于开发更紧凑、更稳定的单片激光系统意义重大。这项研究表明，DCYDF 独特的内包层结构对 fs 激光的焦点位置和强度有着不可忽视的影响。为了实现 FBG 的精确和高效刻蚀，我们根据 DCYDF 的直接成像控制 fs 激光以特定角度入射，并首次利用 fs 激光激发下 Yb3+ 发出的 1 μm 光致发光确定了 fs 激光的焦点。研究结果为了解包层结构对 FBG 刻蚀过程的影响及其对 FBG 特性的影响提供了新的视角。本文提出了一种在DCYDF（YDFBGs）中刻画光纤格拉格光栅的精确而高效的方法，对FBGs的制作和应用具有重要意义。

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