The coupled-mode equations for fiber Bragg grating(FBG)and long period fiber grating(LPFG)undergoing linear and quadratic temperature change were given.The effects of tem-perature gradient and quadratic temperature change on the reflectivity spectrum of fiber Braggs grating and the transmission spectrum of long period fiber grating were investigated using the numerical simulation,and the dependence relationships of the central wavelength shift,the full-width-at-half-maximum,and the peak intensity upon temperature gradient were also obtained.These relation-ships may be used to design a novel fiber optical sensor which can simultaneously measure the tem-perature and temperature gradient.
参考文献
| [1] | Erdogan T. .Fiber grating spectra[J].Journal of Lightwave Technology: A Joint IEEE/OSA Publication,1997(8):1277-1294. |
| [2] | Hill K.O.;Meltz G. .Fiber Bragg grating technology fundamentals and overview[J].Journal of Lightwave Technology: A Joint IEEE/OSA Publication,1997(8):1263-1276. |
| [3] | Kersey A.D.;Davis M.A. .Fiber grating sensors[J].Journal of Lightwave Technology: A Joint IEEE/OSA Publication,1997(8):1442-1463. |
| [4] | Hsu-Chih Cheng;Jen-Fa Huang;Yu-Lung Lo .Simultaneous strain and temperature distribution sensing using two fiber Bragg grating pairs and a genetic algorithm[J].Optical fiber technology,2006(4):340-349. |
| [5] | Won PC;Lai Y;Zhang W;Leng JS;Williams JAR .Distributed temperature measurement using a Fabry-Perot effect based chirped fiber Bragg grating[J].Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter,2006(2):494-499. |
| [6] | Yu Lung Lo .Using in-fiber Bragg-grating sensors for measuring axial strain and temperature simultaneously on surfaces of structures[J].Optical Engineering,1998(7/9):2272-2276. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%