NDLI: A fiber—Optic differential pressure sensor based on microchannels fabricated laser

Content Provider	IEEE Xplore Digital Library
Author	Hao Hu Shuijie Qin Liqiong Zhong
Copyright Year	2011
Description	Author affiliation: The key laboratory for Photoelectric Technology and Application, Guizhou university, Guiyang, China (Hao Hu; Shuijie Qin) \|\| Department of Mechanical and electrical, Guiyang college, China (Liqiong Zhong)
Abstract	A novel fiber—optic differential pressure sensor is designed and theoretically analyzed in this paper. Symmetrical structure between standard cavity and measured cavity is adopted in this sensor, the electro-optic Q-switched laser is used to produce mixed light by extra cavity double frequency,and this mixed light induce plasma to process the µm microchannels which position the emergent fibre and incident fibre. the output signal of the cavities is processed by the signal processing section. The relations between the pressure in cavity and film deformation or the output light intensity are theoretical analyzed, then the mathematical models are established. The relations of Iout/Iin and film distance d, pressure of detection cavity P, pressure of standard cavity P are obtained through a lot of experiments. The results indicated that with the pressure of measured cavity increasing, the value of Iout/Iin decreases, and the Iout/Iin value of standard cavity tends to stable. Through calculating the two values, the sensor can achieve the active measurement of relatively pressure between standard and measured cavity.
Starting Page	2877
Ending Page	2880
File Size	275383
Page Count	4
File Format	PDF
ISBN	9781424480364
e-ISBN	9781424480395
DOI	10.1109/ICEICE.2011.5778344
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fibers Optical fiber sensors Standard cavity Films Microchannel Fiber — optic differential pressure sensor Measured cavity Cavity resonators Mathematical model Microchannels
Content Type	Text
Resource Type	Article

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