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Mesa diaphragm-based Fabry-Perot optical MEMS pressure sensor

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3 Author(s)
Yi-Xian Ge ; Jiangsu Key Lab. of Opto-Electron. Technol., Nanjing Normal Univ., Nanjing, China ; Ming Wang ; Hai-Tao Yan

An optical MEMS pressure sensor with a mesa membrane is presented. The operating principle of the MEMS pressure sensor is expatiated by the Fabry-Perot (F-P) interference and the relation between deflection and pressure is analyzed. Both the mechanical model of the mesa structure diaphragm and the signal averaging effect is validated by simulation, which declares that the mesa structure diaphragm is superior to the planar one on the parallelism and can reduce the signal averaging effect. Experimental results demonstrate that the mesa structure sensor has a reasonable linearity and sensitivity.

Published in:

Optical Fiber Sensors Conference, 2008. APOS '08. 1st Asia-Pacific

Date of Conference:

7-9 Nov. 2008

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