Capillary Fiber Bragg Grating Fabricated by Femtosecond Laser for Sensing Applications

被引：5

作者：

Liu, Shuhui ^{[1
]}

Huang, Chenxi ^{[1
]}

Liu, Ningliang ^{[2
]}

Zhang, Hailiang ^{[3
]}

Lu, Peixiang ^{[4
]}

Shum, Perry Ping ^{[3
]}

机构：

[1] Wuhan Inst Technol, Hubei Key Lab Opt Informat Technol, Wuhan 430205, Peoples R China

[2] Huazhong Agr Univ, Coll Sci, Wuhan 430070, Peoples R China

[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

[4] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2020年 / 32卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Fiber gratings; Reflection; Fiber lasers; Optical fibers; Silicon compounds; Liquids; Anti-resonant reflecting guidance; high temperature sensing; optical fiber sensor; MICROSTRUCTURED OPTICAL-FIBER; CORE; INSCRIPTION; SENSOR; TEMPERATURE; WRITTEN;

D O I：

10.1109/LPT.2020.2997082

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report the demonstration of fiber Bragg grating (FBG) fabricated in silica capillary fiber by use of femtosecond laser. The FBG is inscribed in the silica cladding surrounding the air core by a transversal scanning method through a phase mask. Multimode resonances which result from the overlap of the grating structure and the cladding modes transmitting in the capillary fiber, are observed in the reflection spectra. Sensing capability the FBG is exemplified by infiltrating the hollow core with liquids of different refractive indices (RIs), and shift in resonant wavelengths is observed. The temperature characteristic is investigated with a heating treatment from room temperature to 1000 degrees C. Linear wavelength response is exhibited, with temperature sensitivity of 8 pm/degrees C. The FBG can be finding applications as optofluidic element for biochemical sensing.

引用

页码：783 / 786

页数：4

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