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光纖光柵光譜特性研究(參考版)

2025-06-25 08:39本頁(yè)面
  

【正文】 。她的言傳身教將使我終生受益。參考文獻(xiàn),光纖傳感技術(shù)與應(yīng)用[M],北京:國(guó)防一 1:業(yè)出版社,2022: 1,光纖光學(xué)[M],北京 :清華大學(xué)出版社,2022: 19 71983. W. W. Morey, G. Meltz, W. H. Glenn, Fiber optic Bragg grating sensors [A], Proceeding SPIE[C], 1989,1169:981074. A. D. Kersey, T. A. Berkoff, Multiplexed fiber grating strainsensor system with a FabryPerot wavelength filter [J], Optics Letters, 1993, 18(16): 137013725. G. A. Ball, W. W. Morey, P. K. Cheo, Fiber Laser source/analyzer for Bragg grating sensor array interrogation [J], Journal of Lightwave Technology, 1994,]2(4): 7007036. D. Jackson, A. B. Lobo, L. Ribeiro, J. L. Reekie, Archambault, Simple multiplexing scheme for a fiber grating sensor work [J], Optics Letters, 1993, 18(14): 119211937. M. Song, B. Lee, S. B. Lee, S. S. Choi, Interferometric temperatureinsensitivity strain measurement with differentdiameter fiber Bragg gratings [.I], Optics Letters, 1997, 22(11): 7907928. M. A. Davies, A. D. Kersey, Application of a fiber Fourier transform spectrometer to the detection of wavelengthencoded signal from Bragg grating sensors [J], Journal of Lightwave Technology, 1995,13(7): 1289129541 .R. Isabelle, Fiber Bragg gratings for optical telemunications [J], Comptes Rendus Physique, 2022, 4(1): 41 }49. Isabelle, Fiber Bragg gratings for optical telemunications [J], Comptes Rendus Physique, 2022,4(1): 41 }4910. Myo Myint Ohn, Fiber Braggintra grating measurement and control and their application to sensing and telemunications [J], Applied Image, Inc, 1993:434511. K. O. Hill, Aperiodic distributedparameter waveguide for integrated optics [J], Applied Optics, 1974,13(8): 18531856課程設(shè)計(jì)1812. , Nonuniform sinusoidally modulated dielectric gratings [J], Journal of Optical Society of America, 1969, 59(11): 1409141413. L. A. WellerBrophy, D. G. Hall, Analysis of waveguide gratings: application of Rouard39。相對(duì)于均勻光纖光柵,LCFG 的反射譜的寬度明顯增加,反射率與相同參數(shù)的均勻光纖光柵顯著下降,而且在反射譜寬度內(nèi)存在明顯的振蕩現(xiàn)象。同時(shí)我們給出求解問(wèn)題算法的完整仿真程序代碼。同時(shí),對(duì)于LCFG 而言,由于不同波長(zhǎng)的光波在光纖光柵的不同位置處發(fā)生反射,而且其光纖光柵的周期沿長(zhǎng)度方向變化是線性的,因此在 LCFG 帶寬范圍內(nèi)其時(shí)延值隨波長(zhǎng)的變化幾乎是線性增加的。課程設(shè)計(jì)14 x 10601 L=20mm △n=2*104WavelengthReflectivity(a) x 10601 L=20mm △n=1*104WavelengthReflectivity(b)課程設(shè)計(jì)15 x 10601 L=20mm △n=7*105WavelengthReflectivity(c) x 10601 L=20mm △n=5*105WavelengthReflectivity(d)課程設(shè)計(jì)16 線性啁啾光纖光柵當(dāng)△Λ 等于 時(shí)其相應(yīng)的反射譜如圖所示。同樣,當(dāng)△n 減小時(shí),其峰值反射率逐漸減小。圖 (a),(b) ,(c)和(d)的中反射譜的 FWHM 值分別為:, , , ,其值逐漸增大,反射譜逐漸展寬。當(dāng)△n 大小一定時(shí),光纖光柵的反射譜隨光纖光柵長(zhǎng)度的改變而變化的情況如圖所示。LCFG 的重要用途就是利用不同波長(zhǎng)在光纖光柵中的時(shí)延特性進(jìn)行色散補(bǔ)償 [16~18],其時(shí)延可由下式計(jì)算 [19],即: ( )2c??????
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