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

• 来源期刊: 光电子快报(英文版)
• 年，卷（期）: 2009,（3）
• 页码范围: 182-185
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-009-9053-3

摘要

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 undergo-ing 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.