Title :
A FBG sensing system based on a ring laser structure for high frequency detection
Author :
Lin, Yung-Li ; Liang, Tsair-Chun ; Huang, Chiung-Hsuan ; Shih, Ming Chang
Author_Institution :
Grad. Inst. of Electro-Opt. Eng., First Univ. of Sci. & Technol., Kaohsiung, Taiwan
Abstract :
We demonstrated a fiber sensing system by using a fiber ring resonator cavity formed by two identical fibers Bragg gratings (FBG). The variation of the wavelength of the sensing FBG can be transferred and amplified in real time for long distance environmental monitoring. Measurements of a strain variation in time domain and frequency domain are presented. In addition, a test feature for mechanical vibration has been designed to by applying a switching control to this system, it can be adapted in multi-sensors monitoring for versatile applications for environmental sensing.
Keywords :
Bragg gratings; environmental monitoring (geophysics); fibre optic sensors; frequency measurement; frequency-domain analysis; laser cavity resonators; ring lasers; sensor fusion; strain measurement; time-domain analysis; vibrations; FBG sensing system; environmental sensing; fiber ring resonator cavity; frequency domain; high frequency detection; identical fibers Bragg gratings; long distance environmental monitoring; mechanical vibration; multisensors monitoring; ring laser structure; strain variation measurements; switching control; time domain; Fiber gratings; Optical fiber sensors; Optical ring resonators; Strain;
Conference_Titel :
Opto-Electronics and Communications Conference (OECC), 2012 17th
Conference_Location :
Busan
Print_ISBN :
978-1-4673-0976-9
Electronic_ISBN :
2166-8884
DOI :
10.1109/OECC.2012.6276431
