A fluoride fiber optics in-line sensor for mid-IR spectroscopy based on a side-polished structure

被引：20

作者：

Goya, Kenji ^{[1
]}

Koyama, Yuya ^{[3
]}

Nishijima, Yoshiaki ^{[5
]}

Tokita, Shigeki ^{[4
]}

Yasuhara, Ryo ^{[2
]}

Uehara, Hiyori ^{[2
]}

机构：

[1] Akita Prefectural Univ, Akita, Japan

[2] Natl Inst Fus Sci, Toki, Gifu, Japan

[3] Chiba Inst Technol, Narashino, Chiba, Japan

[4] Osaka Univ, Suita, Osaka, Japan

[5] Yokohama Natl Univ, Yokohama, Kanagawa, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2022年 / 351卷

关键词：

Fluoride fiber sensor; Side-polished structure; Mid-infrared spectroscopy; ASE light source; SINGLE-MODE; LASER INSCRIPTION; BRAGG GRATINGS; FEMTOSECOND; SENSITIVITY; TECHNOLOGY; RANGE; SHAPE;

D O I：

10.1016/j.snb.2021.130904

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We report a side-polished sensor structure for mid-infrared (IR) fiber evanescent wave spectroscopy, produced by means of a mechanical polishing process. By integrating a mid-IR light source into this sensor system, spectroscopic analyses could be performed over the range from 2515 to 3735 nm. Two types of sensor structures were fabricated to examine their characteristics and performance. Spectroscopic analyses of liquid and gas samples were successfully performed using one of the fiber sensors without any further decoration/customization of the sensing portion. Qualitative/quantitative measurements were demonstrated for glycerin and diethylene glycol as liquid samples. The measurement results for CH4 gas samples with concentrations of 1% and 5% allowed the lowest detectable concentration to be estimated at 0.52%.

引用

页数：9

共 48 条

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