Fiber loop ring-down spectroscopy with a long-period grating cavity.
Fiber loop ring-down spectroscopy with a long-period grating cavity.
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DOI：
10.1364/ol.34.001774
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发表时间：
2009-06
期刊：
影响因子：
3.6
通讯作者：
Sean Pu;X. Gu
中科院分区：
文献类型：
--
作者：
Sean Pu;X. Gu
我们已经成功地证明了腔衰荡光谱在光纤环与长周期光栅腔。该腔将>99%的光从纤芯耦合到包层，与光纤周围的环境相互作用，然后将未吸收的光耦合回光纤纤芯。这种设计提供了相对大的倏逝波吸收面积，同时保持光纤环的非常低的损耗。这种腔作为一个敏感的化学传感器的有效性也被证明。
We have successfully demonstrated cavity ring-down spectroscopy in a fiber ring with a long-period grating cavity. The cavity couples >99% of light from core to cladding, interacts with the environment surrounding the fiber, and then couples unabsorbed light back into the fiber core. This design provides a relatively large evanescent wave absorption area while maintaining a very low loss for the fiber ring. The effectiveness of this cavity as a sensitive chemical sensor is also demonstrated.