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Fabrication of high-rejection-low-loss single-passband filters in cladding depressed fiber by the chirped-grating concatenation method

机译:chi光栅级联法在包层凹陷光纤中制备高拒绝低损耗单通滤波器

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High-rejection-low-loss single-passband filters have been successfully fabricated by the chirped-grating concatenation method in a cladding depressed fiber. The enhanced photosensitivity, the enlarged bandgap between the Bragg resonance and the cladding modes, and the effective suppression of the cladding-mode outcoupling of the cladding depressed fiber permitted what is to our knowledge the first achievement of an similar to 1-dB loss in the passband and 50-dB rejection for a 50-nm-wide stop band covering the entire amplified spontaneous emission spectral range of an Er-doped fiber amplifier. (C) 1998 Optical Society of America. [References: 13]
机译:高the低损耗单通滤波器已通过the光栅级联方法成功地在包层凹陷光纤中制造。增强的光敏性,布拉格共振和包层模式之间的带隙增大以及对包层凹陷光纤的包层模式外耦合的有效抑制,使我们所知,这是第一个实现类似于1dB损耗的成就。通带和50 dB抑制比,适用于50 nm宽的阻带,覆盖了掺Er光纤放大器的整个放大的自发发射光谱范围。 (C)1998年美国眼镜学会。 [参考:13]

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