High-Resolution Fiber Optic Sensor based on Coated Linearly Chirped Bragg Grating

被引：7

作者：

Singh, Mandeep ^{[1
]}

Raghuwanshi, Sanjeev Kumar ^{[2
]}

Prakash, Om ^{[3
]}

Saini, Pankaj Kumar ^{[3
]}

机构：

[1] Natl Inst Technol Karnataka, Dept Elect & Commun Engn, Mangalore 575025, India

[2] Indian Sch Mines, Dept Elect Engn, Indian Inst Technol, Dhanbad 826004, Jharkhand, India

[3] Raja Ramanna Ctr Adv Technol RRCAT, Fiber Sensors & Opt Spect Sect FSOSS, Fiber Grating Lab, Indore 452013, Madhya Pradesh, India

来源：

OPTIK | 2020年 / 212卷

关键词：

Fiber optic sensor; fiber Bragg grating; Chirped-mm wave; graphene oxide; Sagnac loop and integrated optics; STRAIN-SENSOR;

D O I：

10.1016/j.ijleo.2020.164698

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

a fiber optic strain sensor is proposed and experimentally demonstrated using fiber Bragg grating (FBG) based interrogation scheme. Due to fast response time and better sensitivity of graphene oxide (GO) material, coated linearly chirped fiber Bragg grating (LCFBG) is used in this work. Interrogation scheme is used for the efficient strain sensing by placing LCFBG within the Sagnac loop (wavelength dependent receiver). The GO deposition is confirmed by ultraviolet-visible spectroscopy, atomic force microscopy (AFM), and field emission scanning electron micrograph (FESEM). Our proposed fiber optic strain sensor possesses better resolution, stable operation in the infra-red region. In addition, sensor demonstrates 5.25 mu epsilon static strain and 0.645 mu epsilon/vHz dynamic strain resolutions, respectively.

引用

页数：7

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