Mathematical model of optimized design of multi-point sensoric measurement with Bragg gratings using wavelength division multiplex

被引:4
|
作者
Fajkus, Marcel [1 ]
Nedoma, Jan [1 ]
Kepak, Stanislav [1 ]
Rapant, Lukas [2 ]
Martinek, Radek [3 ]
Novak, Martin [1 ]
Bednarek, Lukas [1 ]
Vasinek, Vladimir [1 ]
机构
[1] VSB Techn Univ Ostrava, Dept Telecommun, 17 Listopadu 15-2172, Ostrava, Czech Republic
[2] VSB Techn Univ Ostrava, IT4Innovations, 17 Listopadu 15-2172, Ostrava, Czech Republic
[3] VSB Techn Univ Ostrava, Dept Cybernet & Biomed Engn, 17 Listopadu 15-2172, Ostrava, Czech Republic
来源
关键词
Fiber Bragg grating; wavelength multiplex; multi-point; sensor;
D O I
10.1117/12.2239551
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Fiber Bragg gratings (FBGs) belongs to the single-point optical sensors used in many fields and applications where they often replace a standard sensors. They are easy to multiplex and the wavelength division multiplex is the most widely used method. FBGs in sensory branch are designed for a different Bragg wavelength which gives different measurand sensitivity coefficients. Existing algorithm is based on the determination of left and right boundaries of the measuring channel and the central Bragg wavelength. In this paper is presented the new mathematical model for calculation of Bragg wavelength, sensitivity coefficient and channel width of any FBG in the single step. The model takes into account the following input parameters: wavelength of the optical source, source bandwidth, the type of measured quantity, measuring ranges, width of the FBG reflected spectrum and the guard band between adjacent channels. The mathematical model is verified by using a simulation in software OptiSystem.
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页数:7
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