Sensitivity-Enhanced Refractometer Based on Periodic Chirped Waveguide Broadening

IF 2.4 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2026-02-19 DOI:10.1109/LPT.2026.3666343

Qianfei Zhu;Xiao Li;Tian Tian;Ze Yu;Dongqing Zhao;Yiwei Ma;Yongtian Zhu;Tao Geng

引用次数: 0

Abstract

This letter presents a refractive index (RI) fiber sensor based on chirped waveguide broadening by expanding and shrinking the core diameter of multi-mode fibers (MMFs) in the no-core fibers (NCFs). Embedding of MMFs with different core diameter in the NCF enables redistributed optical power from the fundamental core mode to cladding modes, thereby efficiently exciting cladding modes. The experimental results show that in the RI range of 1.33 to 1.42, the sensitivities of Dip A (1450 nm), Dip B (1550 nm), and Dip C (1650 nm) are 568.56 nm/RIU, 851.29 nm/RIU, and 580.91 nm/RIU, respectively. The proposed sensor has the characteristics of high mechanical strength and low temperature crosstalk. It is expected to be used in the fields of environmental monitoring and concentration identification, etc.

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基于周期性啁啾波导展宽的灵敏度增强折射计

本文提出了一种基于啁啾波导展宽的折射率（RI）光纤传感器，该传感器通过扩大和缩小无芯光纤（nfc）中的多模光纤（MMFs）的芯径。在NCF中嵌入不同芯径的MMFs，可以将光功率从基芯模式重新分配到包层模式，从而有效地激发包层模式。实验结果表明，在1.33 ~ 1.42的RI范围内，Dip A （1450 nm）、Dip B （1550 nm）和Dip C （1650 nm）的灵敏度分别为568.56 nm/RIU、851.29 nm/RIU和580.91 nm/RIU。该传感器具有高机械强度和低温串扰的特点。有望在环境监测、浓度识别等领域得到应用。

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

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.