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Mutiwavelength lasers are of great interest as their wide applications. In this paper, a novel multiwavelength pulse Brillouin Erbium-doped fiber laser was demonstrated and its principle was given. An electro-optic modulator (EOM) was used to modulate continue wave into pulse light. The results show that, the peak values are unstable, about ±3dB, but the wavelength interval was stable, about 0.088nm...
A fiber Bragg grating (FBG) sensor was fixed on the uniform strength beam with screws and modified acrylate. The influence of fixing method on FBG strain sensor was investigated experimentally. The wavelength shifts of the FBG sensor fixed by screws and modified acrylate were measured with different strains in the temperature range 0°C-40°C. The linearity, sensitivity and their stability at different...
An innovative temperature-insensitive metal package for FBG was designed to compensate the effect of temperature. The wavelength shift of FBG was tested with the new package and without the package, respectively. In the range of -20°C~100°C, the temperature sensitivity of the FBG was 1.7 pm/°C with the new package and 10.7 pm/°C without the new package. It shows that the new package for FBG can eliminate...
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