Simultaneous temperature and refractive index measurements using a 3/spl deg/ slanted multimode fiber Bragg grating
Simultaneous temperature and refractive index measurements using a 3/spl deg/ slanted multimode fiber Bragg grating
复制标题
DOI：
10.1109/jlt.2005.862471
复制
发表时间：
2006-02
影响因子：
4.7
通讯作者：
Chun-liu Zhao;Xiufeng Yang;M. Demokan;Wei Jin
中科院分区：
文献类型：
--
作者：
Chun-liu Zhao;Xiufeng Yang;M. Demokan;Wei Jin
提出了一种基于3/spl °/倾斜多模光纤光栅（MFBG）的温度和折射率同时测量的新型传感器。3/spl度/倾斜的MFBG在其透射光谱中示出了两个波长组：一个组由于从一个芯模到包层模的耦合而对周围折射率（SRI）和温度敏感，而另一个组由于从一个芯模到其他芯模的耦合而仅对温度敏感。利用不同波长组的两个透射率谷在温度和折射率上的明显差异，可以用一个倾斜的MFBG同时区分和测量两个参数。
A novel and simple sensor based on a 3/spl deg/ slanted multimode fiber Bragg grating (MFBG) for simultaneous temperature and refractive index measurement is demonstrated. The 3/spl deg/ slanted MFBG shows two wavelength groups in its transmission spectrum: One group, due to the coupling from one core mode to cladding modes, is sensitive to both surrounding refractive index (SRI) and temperature and the other, due to the coupling from one core mode to other core modes is sensitive only to temperature. Utilizing the obvious difference of two transmission dips in different wavelength groups on the temperature and the refractive index, two parameters can be distinguished and measured simultaneously using one slanted MFBG.