Mode-beating-enabled stopband narrowing in all-solid photonic bandgap fiber and sensing applications.
Mode-beating-enabled stopband narrowing in all-solid photonic bandgap fiber and sensing applications.
复制标题
全固体光子带隙光纤和传感应用中支持模式跳动的阻带变窄。
DOI：
10.1364/oe.19.008167
复制
发表时间：
2011
期刊：
影响因子：
3.8
通讯作者：
Yongqin Yu
中科院分区：
文献类型：
--
作者：
Y. Geng;Xuejin Li;X. Tan;Yuanlong Deng;Yongqin Yu
在一小段全固态光子带隙光纤（AS-PBF）中，观察到纵向传输方向的芯包层模式拍频现象。结果表明，在AS-PBF的阻带范围内，功率可以在纤芯和第一层高折射率棒之间来回传输。实验结果和横向耦合模理论分析表明，多周期的纤芯-包层模式耦合可以显著地减小锐阻带的3 dB宽度，这对高分辨率传感应用是非常有利的。基于这种引导机制，还制作了高温传感器头，并测试了其对温度的响应为59.9 pm/°C。
In this paper, core-cladding modal beating in a short piece of all-solid photonic bandgap fiber (AS-PBF) is observed in longitudinal propagation direction. It is demonstrated that at the stopband range of AS-PBF, the power could transfer back and forth between the fiber core and the first layer of high-index rods. Both experimental results and the theoretical analysis from transverse coupled mode theory confirm that the 3-dB width of the sharp stopband could be significantly narrowed by multicycles of such core-cladding modal couplings, which is of great benefit to the high-resolution sensing applications. Based on such a guiding regime, a high-temperature sensor head is also made and its response to temperature is tested to be of 59.9 pm/°C.