Title :
Fiber Bragg Grating Based Wireless Sensor Module With Modulated Radio-Frequency Signal
Author :
Liu, Weisheng ; Fu, Hongyan ; Zhang, A. Ping ; He, Sailing
Author_Institution :
State Key Lab. of Modern Opt. Instrum., Zhejiang Univ., Hangzhou, China
fDate :
6/1/2010 12:00:00 AM
Abstract :
A fiber Bragg grating (FBG) sensing scheme based on the measurement of radio-frequency (RF) signal is presented for wireless sensing applications. A fiber ring combined with multiple sensing FBGs is proposed to form a microwave photonic notch filter based sensor module. With an additional FBG as a tunable reference element, the modulated RF signal in the sensor module is utilized to interrogate the wavelength shift of sensing FBGs. Preliminary experiments of the FBG sensor module on the strain measurement are demonstrated and show the effectiveness and flexibility of the sensing scheme.
Keywords :
Bragg gratings; microwave photonics; radiofrequency measurement; strain measurement; wireless sensor networks; fiber bragg grating; microwave photonic notch; modulated radio-frequency signal; radio-frequency signal measurement; strain measurement; wireless sensor module; Fiber Bragg gratings (FBGs); microwave photonics; optical fiber sensor;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2047534
