A fattening Michelson and Fabry-Perot interferometers as comb filter and its application as switchable linear fiber laser

IF 3.4 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2025-10-13 DOI:10.1016/j.infrared.2025.106201

A. Bueno-Gasca , J.M. Sierra-Hernández , R. Rojas-Laguna , J.M. Estudillo-Ayala , J.R. Reyes-Ayona , E. Gallegos-Arellano , J.C. Hernández-García , D. Jáuregui-Vázquez

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引用次数: 0

Abstract

This work presents a switchable multiwavelength erbium-doped fiber laser based on a fattening Michelson interferometer (FMI) cascaded with a silicon wafer (SW) of 525 μm thickness, acting as a Fabry-Perot interferometer (FPI), together producing a comb filter (CF). Fattening fusion splicing a single-mode fiber (SMF-28) segment with a non-zero dispersion-shifted fiber (NZ-DSF) generates an FMI. The proposed linear cavity design uses the CF as a wavelength-selective filter (WSF). Experimental results show that the Free Spectral Range (FSR) for FPI and FMI was 0.6 and 8 nm, respectively, with a fringe contrast of approximately 10 nm for both. Furthermore, the laser lines can be switched from 1560 to 1565 nm by changing the curvature over the FMI. In this way, we obtain single, double, and quintuple emission lines by applying micro-bending from 0 to 0.622 m⁻¹. The laser has a side mode suppression ratio (SMSR) of about 47 dB and a 3 dB linewidth of 0.06 nm. Finally, the laser arrangement is compact and robust, requiring a relatively simple fabrication procedure.

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一种用于梳状滤波器的增厚迈克尔逊和法布里-珀罗干涉仪及其在可切换线性光纤激光器中的应用

本文提出了一种可切换的多波长掺铒光纤激光器，该激光器基于增厚迈克尔逊干涉仪（FMI）与525 μm厚度的硅片（SW）级联，充当法布里-珀罗干涉仪（FPI），共同产生梳状滤波器（CF）。单模光纤（SMF-28）段与非零色散位移光纤（NZ-DSF）的增肥熔接产生FMI。提出的线性腔设计使用CF作为波长选择滤波器（WSF）。实验结果表明，FPI和FMI的自由光谱范围（FSR）分别为0.6和8 nm，条纹对比度均约为10 nm。此外，通过改变FMI上的曲率，激光线可以从1560 nm切换到1565 nm。通过这种方法，在0 ~ 0.622 m−1范围内施加微弯曲，我们获得了单线、双线和五线发射线。该激光器的侧模抑制比（SMSR）约为47 dB，线宽为3 dB，为0.06 nm。最后，激光器的布置紧凑而坚固，需要一个相对简单的制造过程。

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

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.