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Title of Journal: Optoelectron Lett

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Abbravation: Optoelectronics Letters

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Tianjin University of Technology

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DOI

10.1016/0009-2509(69)87039-9

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1993-5013

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A novel oil level monitoring sensor based on strin

Authors: Qi Jiang
Publish Date: 2011/06/03
Volume: 7, Issue: 3, Pages: 171-174
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Abstract

In this paper we present a novel oil level monitoring sensor based on string tilted fiber Bragg grating TFBG The measurement range and sensitivity of oil level monitoring can be modulated via changing the length and number of string tilted fiber gratings The transmission spectrum of string TFBGs immersed in oil changes obviously with the oil level variation Experiments are conducted on three 2 cmlength serial TFBGs with the same tilted angle of 10o A sensitivity of 328 dB/cm in the string TFBG sensor is achieved with good linearity by means of TFBG spectrum characteristic with peaklow value The cladding mode transmission power and the amplitude of high order cladding mode resonance are nearly linear to the oil level variation This kind of sensor is insensitive to temperature and attributed to be employed in extremely harsh environment oil monitoring

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