Top-hat beam output of a single-mode microstructured optical fiber: Impact of core index depression
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...Compared to the M-type fiber, the core mode of the DCF is guided by both total internal reflection and anti-resonance guidance, and its core mode has a real effective refractive index [27,29-32]....
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...However, these studies in regard to DCFs [27, 29-32] were limited to the analysis of a few modes in the strong dispersion region....
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...Due to the manageable waveguide dispersion and modal field changes in a DCF, the generation of supercontinuum [27] and top-hat beams [32] can be achieved....
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...Therefore, given that DCFs can readily provide manageable waveguide dispersion and exceptional modal field changes, they are worthy further study for a wide range of applications, in addition to the few existing works such as the generation of the supercontinuum [27] and top-hat beams [32]....
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...The DCFs have been studied for various applications including pulse compression in fiber lasers [29-31], generation of supercontinuum [27] and top-hat beams [32], due to their manageable waveguide dispersion and exceptional modal field changes....
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References
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