Fiber Bragg grating technology fundamentals and overview

Abstract

The historical beginnings of photosensitivity and fiber Bragg grating (FBG) technology are recounted. The basic techniques for fiber grating fabrication, their characteristics, and the fundamental properties of fiber gratings are described. The many applications of fiber grating technology are tabulated, and some selected applications are briefly described.

Influence of the incident angle of strain wave on the sensing sensitivity of fiber Bragg grating

“…FBG sensors offer advantages over conventional electrical strain gauges because they are lightweight and can easily be integrated into structures. These sensors also have immunity to electromagnetic interference (EMI) and are ideal for multiplexing [1,2,3]. Different kinds of measured physical quantities (such as force, vibration, pressure, and others) can be converted to strain in practical measurements.…”

Запись И Визуализация Волоконных Решеток Показателя Преломления С Наклонными Штрихами

“…Такие структуры характеризуются полностью волоконным исполнением, малыми размера-ми, защищенностью от воздействия электромагнитных полей, долговечностью, стабильностью, низкими вноси-мыми потерями и гибкой спектральной передаточной характеристикой [1][2][3][4].…”

Curing Monitoring of Composite Material Using Embedded Fiber Bragg Grating Sensors

“…When the broad band light source lunches at the FBG, the certain wavelength of the light will be reflected. The reflected wavelength of FBG can be expressed as following [Hill & Meltz, 1997]:…”

“…The FBG wavelength is a function of the temperature and strain and in form as following [Hill & Meltz, 1997] …”