Integrated Microfibre Device for Refractive Index and Temperature Sensing

Integrated Microfibre Device for Refractive Index and Temperature Sensing
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DOI:
10.3390/s120911782
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发表时间:
2012-08-29
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Ahmad H
Ahmad H
中科院分区:
其他
文献类型:
--
作者:
Lim KS;Aryanfar I;Chong WY;Cheong YK;Harun SW;Ahmad H

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A microfibre device integrating a microfibre knot resonator in a Sagnac loop reflector is proposed for refractive index and temperature sensing. The reflective configuration of this optical structure offers the advantages of simple fabrication and ease of sensing. To achieve a balance between responsiveness and robustness, the entire microfibre structure is embedded in low index Teflon, except for the 0.5–2 mm diameter microfibre knot resonator sensing region. The proposed sensor has exhibited a linear spectral response with temperature and refractive index. A small change in free spectral range is observed when the microfibre device experiences a large refractive index change in the surrounding medium. The change is found to be in agreement with calculated results based on dispersion relationships.
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