Abstract
The Karhunen-Loeve transform (KLT) is used to retrieve the wavelength information of several fiber Bragg gratings (FBGs) that are acting as a multiplexed sensor. The modulated light of a broadband source is launched to the FBG cascade in order to capture the electrical frequency response of the system. Thanks to a dispersive media, the wavelengths of the FBGs are mapped in radiofrequency (RF) delays. Wavelength changes are determined by the amplitude change of the samples in the impulse response, a change which is followed by the eigenvalue calculated by the KLT routine. The use of the KLT routine reduces by three orders of magnitude the amount of points needed to have a sub-degree resolution in temperature sensing, while keeping the accuracy almost intact.
| Original language | English |
|---|---|
| Article number | 7575720 |
| Journal | Journal of Lightwave Technology |
| Volume | PP |
| Issue number | 99 |
| DOIs | |
| Publication status | Published - Jan 1 2016 |
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Keywords
- fiber Bragg gratings
- Karhunen-Loeve transform
- microwave photonics
- Optical fiber sensors
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
KLT Based Interrogation Technique for FBG Multiplexed Sensor Tracking. / Hervás, Javier; Tosi, Daniele; García-Miquel, Héctor; Barrera, David; Fernández-Pousa, Carlos R.; Sales, Salvador.
In: Journal of Lightwave Technology, Vol. PP, No. 99, 7575720, 01.01.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - KLT Based Interrogation Technique for FBG Multiplexed Sensor Tracking
AU - Hervás, Javier
AU - Tosi, Daniele
AU - García-Miquel, Héctor
AU - Barrera, David
AU - Fernández-Pousa, Carlos R.
AU - Sales, Salvador
PY - 2016/1/1
Y1 - 2016/1/1
N2 - The Karhunen-Loeve transform (KLT) is used to retrieve the wavelength information of several fiber Bragg gratings (FBGs) that are acting as a multiplexed sensor. The modulated light of a broadband source is launched to the FBG cascade in order to capture the electrical frequency response of the system. Thanks to a dispersive media, the wavelengths of the FBGs are mapped in radiofrequency (RF) delays. Wavelength changes are determined by the amplitude change of the samples in the impulse response, a change which is followed by the eigenvalue calculated by the KLT routine. The use of the KLT routine reduces by three orders of magnitude the amount of points needed to have a sub-degree resolution in temperature sensing, while keeping the accuracy almost intact.
AB - The Karhunen-Loeve transform (KLT) is used to retrieve the wavelength information of several fiber Bragg gratings (FBGs) that are acting as a multiplexed sensor. The modulated light of a broadband source is launched to the FBG cascade in order to capture the electrical frequency response of the system. Thanks to a dispersive media, the wavelengths of the FBGs are mapped in radiofrequency (RF) delays. Wavelength changes are determined by the amplitude change of the samples in the impulse response, a change which is followed by the eigenvalue calculated by the KLT routine. The use of the KLT routine reduces by three orders of magnitude the amount of points needed to have a sub-degree resolution in temperature sensing, while keeping the accuracy almost intact.
KW - fiber Bragg gratings
KW - Karhunen-Loeve transform
KW - microwave photonics
KW - Optical fiber sensors
UR - http://www.scopus.com/inward/record.url?scp=85029207004&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029207004&partnerID=8YFLogxK
U2 - 10.1109/JLT.2016.2613131
DO - 10.1109/JLT.2016.2613131
M3 - Article
VL - PP
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 99
M1 - 7575720
ER -