The influence of temperature on reflected wavelength shift of fiber Bragg gratings

JIA Zhen-an; QIAO Xue-guang; LI Ming; FU Hai-wei; HUO Han-ping; LIU Ying-gang; ZHOU Hong

An experimental setup of fiber Bragg gratings temperature sensing has been designed and founded.The influence of temperature on reflected wavelength shift of fiber Bragg gratings was studied.The wavelength shift of fiber Bragg gratings was measured respectively during temperature increasing and dropping.It was obtained that average reflected wavelength shift per Celsius centigrade degree when temperature increasing and dropping.Furthermore,the questions of the relations between wavelength shift and temperature variational direction and temperature sensing response speed was analyzed and discussed thoroughly.The results indicate that the response of fiber grating sensor is rapid.The relations between reflected wavelength shift and temperature have better linearity and the reflected wavelength shift is independent of temperature variational direction.

1. Optical Fiber Sensing Laboratory, School of Science, Xi'an Shiyou University, Xi'an 710065, China

Received Date: 2002-12-12

Accepted Date: 2003-11-18

Available Online: 2004-05-25

Abstract: An experimental setup of fiber Bragg gratings temperature sensing has been designed and founded.The influence of temperature on reflected wavelength shift of fiber Bragg gratings was studied.The wavelength shift of fiber Bragg gratings was measured respectively during temperature increasing and dropping.It was obtained that average reflected wavelength shift per Celsius centigrade degree when temperature increasing and dropping.Furthermore,the questions of the relations between wavelength shift and temperature variational direction and temperature sensing response speed was analyzed and discussed thoroughly.The results indicate that the response of fiber grating sensor is rapid.The relations between reflected wavelength shift and temperature have better linearity and the reflected wavelength shift is independent of temperature variational direction.

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The influence of temperature on reflected wavelength shift of fiber Bragg gratings

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