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Apodized fiber bragg grating and improved phase mask, method and system for making the same
Apodized fiber bragg grating and improved phase mask, method and system for making the same
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机译:切趾光纤布拉格光栅和改进的相位掩模,制造该光栅的方法和系统
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摘要
An apodized fiber Bragg grating, and a phase mask, method and system for making such a grating are disclosed. The refractive index profile of the grating has a periodic apodization phase component which is designed so that the grating fringes reflecting light in a spectral region of interest are apodized, by generating spurious reflection features outside of this spectral region of interest. Apodization is therefore provided through a phase variation of the grating as opposed to an amplitude variation. The phase component is added to the profile of the phase mask grating corrugations to obtain the phase-apodized grating.
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