Sensors 2012, 12(5), 5888-5895; doi:10.3390/s120505888
Article

A Wide Dynamics and Fast Scan Interrogating Method for a Fiber Bragg Grating Sensor Network Implemented Using Code Division Multiple Access

Received: 5 April 2012; in revised form: 3 May 2012 / Accepted: 3 May 2012 / Published: 8 May 2012
(This article belongs to the Special Issue Optical Fiber Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: We propose and demonstrate a fiber Bragg grating (FBG) sensor network employing the code division multiple access (CDMA) technique to identify information from individual sensors. To detect information without considering time delays between sensors, a sliding correlation method is applied, in which two different signals with the same pseudo-random binary sequence (PRBS) pattern, but slightly different frequencies, are applied to the source and detector sides. Moreover, for time domain detection, a wavelength-to-time conversion technique using a wavelength dispersive medium is introduced. The experimental results show that the proposed sensor network has a wide strain dynamic range of 2,400 μe and a low crosstalk of 950:1.
Keywords: optical sensor network; code division multiple access; fiber Bragg grating sensor; wavelength-to-time conversion; sliding correlation
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MDPI and ACS Style

Kim, Y.; Jeon, S.-W.; Kwon, W.-B.; Park, C.-S. A Wide Dynamics and Fast Scan Interrogating Method for a Fiber Bragg Grating Sensor Network Implemented Using Code Division Multiple Access. Sensors 2012, 12, 5888-5895.

AMA Style

Kim Y, Jeon S-W, Kwon W-B, Park C-S. A Wide Dynamics and Fast Scan Interrogating Method for a Fiber Bragg Grating Sensor Network Implemented Using Code Division Multiple Access. Sensors. 2012; 12(5):5888-5895.

Chicago/Turabian Style

Kim, Youngbok; Jeon, Sie-Wook; Kwon, Won-Bae; Park, Chang-Soo. 2012. "A Wide Dynamics and Fast Scan Interrogating Method for a Fiber Bragg Grating Sensor Network Implemented Using Code Division Multiple Access." Sensors 12, no. 5: 5888-5895.

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