期刊
OPTICS EXPRESS
卷 21, 期 23, 页码 28175-28181出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.028175
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资金
- Infraestructura FEDER [UPVOV08-3E-008]
- FEDER [UPVOV10-3E-492]
- Spanish MCINN [TEC2011-29120-C05-05, TEC2011-29120-C05-01]
- Valencia Government through the Ayuda Complementaria [ACOMP/2013/146]
- European Commission through the COST Action [TD1001 OFSeSa]
- Swiss National Science Foundation [200021-134546]
- Research Excellency Award Program GVA PROMETEO [2013/012]
- Next generation Microwave Photonic technologies
- Swiss National Science Foundation (SNF) [200021_134546] Funding Source: Swiss National Science Foundation (SNF)
A novel technique for interrogating photonic sensors based on long fiber Bragg gratings (FBGs) is presented and experimentally demonstrated, dedicated to detect the presence and the precise location of several spot events. The principle of operation is based on a technique used to analyze microwave photonics (MWP) filters. The long FBGs are used as quasi-distributed sensors. Several hot-spots can be detected along the FBG with a spatial accuracy under 0.5 mm using a modulator and a photodetector (PD) with a modest bandwidth of less than 1 GHz. The proposed interrogation system is intrinsically robust against environmental changes. (C) 2013 Optical Society of America
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