Abstract
Fiber Bragg grating (FBG) is the most researched and implemented sensor of all the available fiber optic sensors till date. Despite being highly sensitive and accurate, the applications of FBG sensors are limited. The main reasons for their limited applications are the high cost and bulkiness of the interrogation system, optical spectrum analyzer (OSA). In this paper, a wavelength shifted chirped FBG (CFBG) interrogation system is presented. It is an optical intensity based FBG interrogation system which can measure positive/negative strain and temperature changes simultaneously. This system is simple, cost effective, and compact with a strain resolution of around 1 με. A chirp bandwidth of 5 nm can easily provide a strain measurement range of about ±4000 με. Essentially, this sensor design abrogates the need for OSA and makes FBG more suitable for field applications.
| Original language | English |
|---|---|
| Pages (from-to) | 231-235 |
| Number of pages | 5 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 265 |
| DOIs | |
| Publication status | Published - Oct 1 2017 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 Elsevier B.V.
ASJC Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
Keywords
- Chirped fiber Bragg grating (CFBG)
- Fiber Bragg grating (FBG)
- Fiber sensors
- Interrogation method