Broadband filter using cladding profile linearly tapered long-period waveguide grating

Broadband filter using cladding profile linearly tapered long-period waveguide grating
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使用包层轮廓线性锥形长周期波导光栅的宽带滤波器

DOI:
10.1016/j.optcom.2010.12.004
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发表时间:
2011-04
影响因子:
2.4
通讯作者:
Lei Xu
Lei Xu
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Yanwu Zhang;Yingfeng Li;Zian He;Liying Liu;Lei Xu

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提出了一种利用线性渐变包层轮廓和大的耦合常数来增加长周期波导光栅(LPWGS)带宽的方法。与传统的均匀低杂波光纤光栅相比,所设计的啁啾低杂波光纤光栅的模拟带宽提高了14倍,从0.9 nm提高到12.8 nm。此外,还制作了具有这种新结构的啁啾LPWG,并观察到了带宽展宽效应。
A method to increase the bandwidth of long-period waveguide gratings (LPWGs) is proposed using linearly tapered cladding profile and large coupling constant. Compared to conventional uniform LPWG, the simulated 20-dB bandwidth of the designed chirped LPWG is enlarged by 14 times, from 0.9nm to 12.8nm. Besides, a chirped LPWG with the new structure is also fabricated, and bandwidth broadening effect is observed.
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