High sensitivity sensors utilising characteristics of dispersion-turning-point of long-period gratings in B/Ge co-doped fibre
High sensitivity sensors utilising characteristics of dispersion-turning-point of long-period gratings in B/Ge co-doped fibre
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DOI：
10.1109/ofs.2002.1000806
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发表时间：
2002-05
期刊：
影响因子：
--
通讯作者：
X. Shu;Lin Zhang;I. Bennion
中科院分区：
文献类型：
--
作者：
X. Shu;Lin Zhang;I. Bennion
系统地研究了长周期光纤光栅的波导色散特性。结果表明，耦合包层模在色散转折点区域谐振，对外界扰动具有固有的敏感性。因此，需要良好稳定性的基于LPFG的应用装置应避免该区域。另一方面，这种模式的超灵敏区可以被探索，以实现高效率的传感器和可调谐滤波器。
Systematically investigated the waveguide dispersion characteristics of LPFGs. It has been revealed that the coupled cladding modes resonating in the dispersion-turning-point region are intrinsically sensitive to the external perturbation. Thus, LPFG-based application devices requiring good stability should avoid this region. On the other hand, this mode ultra-sensitive-zone can be explored to realise sensors and tuneable filters of high efficiency.