Title :
Multiplexed Fiber Fabry–Pérot Interferometer Sensors Based on Ultrashort Bragg Gratings
Author :
Wang, Zhuang ; Shen, Fabin ; Song, Lijun ; Wang, Xingwei ; Wang, Anbo
Author_Institution :
Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ.
fDate :
4/15/2007 12:00:00 AM
Abstract :
This letter reports a fiber Fabry-Peacuterot interferometer sensor formed by two closely spaced ultrashort uniform Bragg gratings within fiber core. The sensor has insertion loss as low as 0.002 dB which enables a considerable increase in the sensor´s multiplexing capability. Fifty sensors are experimentally multiplexed along a single fiber using a frequency-division-multiplexing method. The potential of multiplexing more than 500 sensors is theoretically expected. The sensor´s application in temperature and strain measurement is also investigated
Keywords :
Bragg gratings; Fabry-Perot interferometers; fibre optic sensors; frequency division multiplexing; optical fibre losses; strain measurement; strain sensors; temperature measurement; temperature sensors; Fabry-Perot interferometer sensor; frequency-division-multiplexing method; insertion loss; strain measurement; temperature measurement; ultrashort Bragg gratings; Bragg gratings; Fiber gratings; Optical fiber sensors; Optical refraction; Optical sensors; Optical variables control; Reflectivity; Sensor systems; Temperature sensors; Wavelength division multiplexing; Fabry–Pérot interferometer; fiber Bragg grating (FBG); fiber-optic sensor; multiplexing; strain; temperature;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.894361
