KLT-Based Interrogation Technique for FBG Multiplexed Sensor Tracking

Javier Hervás; Daniele Tosi; Héctor García-Miquel; David Barrera; Carlos R. Fernández-Pousa; Salvador Sales

doi:10.1109/JLT.2016.2613131

KLT-Based Interrogation Technique for FBG Multiplexed Sensor Tracking

Javier Hervás, Daniele Tosi, Héctor García-Miquel, David Barrera, Carlos R. Fernández-Pousa, Salvador Sales

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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 dispersive media, the wavelengths of the FBGs are mapped in radio-frequency 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 subdegree resolution in temperature sensing, while keeping the accuracy almost intact.

Original language	English
Pages (from-to)	3387-3392
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	35
Issue number	16
DOIs	https://doi.org/10.1109/JLT.2016.2613131
Publication status	Published - Aug 15 2017

Keywords

Fiber Bragg gratings
Karhunen-Loeve transform
microwave photonics
optical fiber sensors

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/JLT.2016.2613131

Fingerprint Dive into the research topics of 'KLT-Based Interrogation Technique for FBG Multiplexed Sensor Tracking'. Together they form a unique fingerprint.

Cite this

@article{7c0354b6c854427ba86612b533ceddbf,

title = "KLT-Based Interrogation Technique for FBG Multiplexed Sensor Tracking",

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 dispersive media, the wavelengths of the FBGs are mapped in radio-frequency 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 subdegree resolution in temperature sensing, while keeping the accuracy almost intact.",

keywords = "Fiber Bragg gratings, Karhunen-Loeve transform, microwave photonics, optical fiber sensors",

author = "Javier Herv{\'a}s and Daniele Tosi and H{\'e}ctor Garc{\'i}a-Miquel and David Barrera and Fern{\'a}ndez-Pousa, {Carlos R.} and Salvador Sales",

note = "Funding Information: This work was supported in part by the Spanish MINECO through Project TEC2014-60378, and in part by the Government of Valencia through the Research Excellency Award Program GVA PROMETEO 2013/012. The work of J. Herv?s was supported by the MECD FPU Scholarship (FPU13/04675).",

year = "2017",

month = aug,

day = "15",

doi = "10.1109/JLT.2016.2613131",

language = "English",

volume = "35",

pages = "3387--3392",

journal = "Journal of Lightwave Technology",

issn = "0733-8724",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "16",

}

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

N1 - Funding Information: This work was supported in part by the Spanish MINECO through Project TEC2014-60378, and in part by the Government of Valencia through the Research Excellency Award Program GVA PROMETEO 2013/012. The work of J. Herv?s was supported by the MECD FPU Scholarship (FPU13/04675).

PY - 2017/8/15

Y1 - 2017/8/15

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 dispersive media, the wavelengths of the FBGs are mapped in radio-frequency 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 subdegree 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 dispersive media, the wavelengths of the FBGs are mapped in radio-frequency 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 subdegree 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=85027438646&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027438646&partnerID=8YFLogxK

U2 - 10.1109/JLT.2016.2613131

DO - 10.1109/JLT.2016.2613131

M3 - Article

AN - SCOPUS:85027438646

VL - 35

SP - 3387

EP - 3392

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 16

ER -