Low-Loss Optical Channel Waveguides in ZnF2-AlF3 Based Fluoride Glass for Integrated Photonics

IF 2.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-09-02 DOI:10.1109/LPT.2025.3605403

Liming Mao;Tao Gong;Zhiyuan Zhao;Shijie Jia;Shunbin Wang;Pengfei Wang

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引用次数: 0

Abstract

We report the fabrication of low-loss channel-type optical waveguides in a novel

$\text{ZnF}_{\mathbf {2}}$

$\text{AlF}_{\mathbf {3}}$

based fluoride glass using femtosecond laser direct writing. The induced refractive index contrast range from

$- 2\times 10^{\mathbf {-3}}$

$+ 3\times 10^{\mathbf {-3}}$

relative to the bulk glass, enabling effective light confinement. By optimizing the laser processing parameters, a minimum propagation loss of 0.93 dB/cm was achieved. Additionally, active waveguides doped with varying concentrations of

$\text{Tm}^{\mathbf {3+}}$

ions were inscribed, demonstrating strong emission centered at 1810 nm when pumped at 1570 nm. These results highlight the potential of

$\text{ZnF}_{\mathbf {2}}$

–

$\text{AlF}_{\mathbf {3}}$

fluoride glass as a promising platform for mid-infrared integrated photonic circuits and next-generation optical communication devices.

查看原文本刊更多论文

集成光子学用ZnF2-AlF3基氟化玻璃低损耗光通道波导

我们报道了一种新型的$\text{ZnF}_{\mathbf {2}}$ - $\text{AlF}_{\mathbf{3}}$基氟化玻璃中使用飞秒激光直接写入的低损耗通道型光波导。相对于块玻璃，诱导折射率对比度范围从$- 2\乘以10^{\mathbf{-3}}$到$+ 3\乘以10^{\mathbf{-3}}$，实现了有效的光约束。通过优化激光加工参数，实现了最小传输损耗0.93 dB/cm。此外，在不同浓度的$\text{Tm}^{\mathbf{3+}}$离子掺杂的有源波导中，在1570 nm泵浦时显示出以1810 nm为中心的强发射。这些结果突出了$\text{ZnF}_{\mathbf {2}}$ - $\text{AlF}_{\mathbf{3}}$氟化物玻璃作为中红外集成光子电路和下一代光通信器件的有前途的平台的潜力。

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.