Search for: [Abstrakt = "A temperature\-compensated material of fiber Bragg grating \(FBG\), which has negative thermal\-expansion coefficient has been presented. The temperature coefficient of FBGs’ center wavelength is less than 0.0005 nm\/°C after three\-layer\-structure temperature\-compensated package under tension. For the first time, PMD of FBG with and without temperature compensation has been detailedly studied and measured from –20 to 60°C. The measured result shows that the PMD changes a little at varying temperature, which means that the package did not affect the PMD characteristic of FBG."]

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