Fabrication of high-Q polydimethylsiloxane optical microspheres for thermal sensing

被引：263
作者：
Dong, C. -H. [1 ,2 ]
He, L. [1 ]
Xiao, Y. -F. [1 ,3 ]
Gaddam, V. R. [1 ]
Ozdemir, S. K. [1 ]
Han, Z. -F. [2 ]
Guo, G. -C. [2 ]
Yang, L. [1 ]
机构：
[1] Washington Univ, Dept Elect & Syst Engn, Micro Nano Photon & Photon Mat Lab, St Louis, MO 63130 USA
[2] Univ Sci & Technol China, Key Lab Quantum Informat, Hefei 230026, Peoples R China
[3] Peking Univ, Sch Phys, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 23期
基金：
中国国家自然科学基金;
关键词：
microcavity lasers; optical polymers; sensors; whispering gallery modes; FIBEROPTIC TEMPERATURE SENSOR; SURFACE-PLASMON RESONANCE; COATED MICROSPHERE; INTERFEROMETER; MICROCAVITIES; SENSITIVITY; EXPANSION; METAL; LAYER; SHIFT;
D O I：
10.1063/1.3152791
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Polydimethylsiloxane (PDMS) optical microspheres are fabricated and whispering gallery modes with quality factors of 10(6) in the 1480 nm band are demonstrated. The dependence of the resonance shifts on the input power is investigated in both the transient (blueshift) and the steady-state (redshift) regimes. Moreover, we demonstrate that such high-Q PDMS optical resonators can be used as highly sensitive thermal sensors with temperature sensitivity of 0.245 nm/degrees C, which is one order of magnitude higher than conventional silica microsphere resonators. The estimated thermal resolution of the sensor is 2x10(-4) degrees C.
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页数：3
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