Model-based compressed sensing of fiber Bragg grating arrays in the frequency domain

被引：3
|
作者：
Werzinger, Stefan [1 ]
Gottinger, Michael [1 ]
Gussner, Sandra [1 ]
Bergdolt, Sven [1 ]
Engelbrecht, Rainer [1 ]
Schmauss, Bernhard [1 ]
机构：
[1] Friedrich Alexander Univ Erlangen Nurnberg, Inst Microwaves & Photon, Cauerstr 9, D-91058 Erlangen, Germany
来源：
2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS) | 2017年 / 10323卷
关键词：
Fiber Bragg gratings; compressed sensing; incoherent frequency domain reflectometry;
D O I：
10.1117/12.2263462
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose a model-based compressed sensing (MBCS) of FBG arrays (FBGA), interrogated with wavelength scanning incoherent optical frequency domain reflectometry. This method measures the frequency response of a FBGA with an electrical vector network analyzer combined with a tunable laser. Instead of the usual inverse discrete Fourier transform (IDFT), we apply a direct estimation of the grating reflectivities with a simple frequency domain model. A reconstruction of 10 gratings spaced by 20 cm is demonstrated. MBCS allows to reduce the number of measurement frequencies from 120 to 8, compared to an IDFT, while using a bandwidth of just 500 MHz.
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页数：4
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