Spectra of fiber Bragg grating and long period fiber grating undergoing linear and quadratic strain

Yin-quan Yuan; Lei Liang; Dong-sheng Zhang

doi:10.1007/s11801-009-9053-3

Optoelectronics Letters ›› 2009, Vol. 5 ›› Issue (3) : 182 -185. DOI: 10.1007/s11801-009-9053-3

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Spectra of fiber Bragg grating and long period fiber grating undergoing linear and quadratic strain

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Abstract

The effects of linear and quadratic strain on the reflective spectrum of FBG and the transmission spectrum of LPFG have been numerically investigated based on the coupled -mode equations. The results show that for the FBG or LPFG undergoing only linear strain, the reflection or transmission spectrum is symmetrical about its central wavelength, the dependence relationships of the central wavelength shift, full-width-at-half-maximum, peak intensity upon the strain gradient have been obtained.

Keywords

Reflection Spectrum / Fiber Bragg Grating / Strain Gradient / Wavelength Shift / Effective Refractive Index

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Yin-quan Yuan, Lei Liang, Dong-sheng Zhang. Spectra of fiber Bragg grating and long period fiber grating undergoing linear and quadratic strain. Optoelectronics Letters, 2009, 5(3): 182-185 DOI:10.1007/s11801-009-9053-3

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