Enhanced fiber Bragg grating sensor demodulation technique using cascade wavelength division multiplex couplers

2005 ◽  
Author(s):  
Keke Tian ◽  
Songwei Zhang ◽  
Fang Li ◽  
Yuliang Liu ◽  
Qiming Wang
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplex ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Wavelength Division ◽  
Bragg Grating Sensor

Hybrid time- and wavelength-division multiplexed fiber Bragg grating sensor array

1995 ◽  
Author(s):  
Timothy A. Berkoff ◽  
Michael A. Davis ◽  
David G. Bellemore ◽  
Alan D. Kersey ◽  
Glen M. Williams ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Sensor Array ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Bragg Grating Sensor

Spectrum-profile-identification-based wavelength division multiplexing method for a fiber Bragg grating sensor

2017 ◽  
Vol 15 (7) ◽  
pp. 070605
Author(s):  
Yuheng Pan Yuheng Pan ◽  
Junfeng Jiang Junfeng Jiang ◽  
Weijia Lu Weijia Lu ◽  
Huijia Yang Huijia Yang ◽  
Kun Liu Kun Liu ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplexing ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Wavelength Division ◽  
Bragg Grating Sensor

Dynamic fiber Bragg grating sensor array with increased wavelength-division multiplexing density and low crosstalk

2017 ◽  
Vol 56 (3) ◽  
pp. 037101 ◽  
Author(s):  
Faxiang Zhang ◽  
Chang Wang ◽  
Shaodong Jiang ◽  
Xiaolei Zhang ◽  
Zhihui Sun ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplexing ◽  
Sensor Array ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Wavelength Division ◽  
Bragg Grating Sensor

Application for Fiber Bragg Grating Sensor in Internal Force Testing of Lining Structure

2011 ◽  
Vol 219-220 ◽  
pp. 746-749 ◽  
Author(s):  
Jian Guo Yang ◽  
Wei Ma
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplex ◽  
Internal Force ◽  
Test Method ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Lining Structure ◽  
Internal Forces ◽  
Bragg Grating Sensor ◽  
Concrete Stress

In order to know about the change of concrete stress and internal forces during the construction period of one highway tunnel, to evaluate the safety of lining structure, to take precautions against early diseases and to avoid loss in result of structural instability, linear arrays of fiber Bragg grating sensor in series were used for continuous monitoring typical lining cross section based on wavelength division multiplex. A mass of initial data was acquired. Furthermore, internal forces and early concrete stress of lining were analyzed according to time stress curve and internal force diagram. It has been found that fiber Bragg grating is highly adaptable to tunnel environment and the test method is of high accuracy. Therefore, the method discussed in this paper can be used for field test of tunnel structure extensively.

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