Experimental study on humidity sensing using a FBG sensor with polyimide coating

Fuxin Ding; Lutang Wang; Nian Fang; Zhaoming Huang

doi:10.1117/12.887827

3 January 2011 Experimental study on humidity sensing using a FBG sensor with polyimide coating

Fuxin Ding, Lutang Wang, Nian Fang, Zhaoming Huang

Proceedings Volume 7990, Optical Sensors and Biophotonics II; 79900C (2011) https://doi.org/10.1117/12.887827
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

Abstract

Experimental studies on humidity measurements by using a FBG-based humidity sensor with multi-layer polyimide coating are demonstrated. As an important sensing application, the FBG humidity sensors have many unique advantages, such as immunity to electromagnetic interference and compact size, over the conventional electrical humidity sensor. In the detection principle, The Bragg wavelength of the FBG sensor shifts with the volume of the moisture absorbed by the polyimide film coated on the FBG. Experimental results show a good linear relationship between the shifts of the Bragg wavelength of FBG sensor and the changes in the relative humidity level. The preliminary experiments for investigating the performances of this polyimide-coating FBG humidity sensor were carried out and several experimental results in measurements of the relative humidity in air and moisture in oil are presented.

Citation Download Citation

Fuxin Ding, Lutang Wang, Nian Fang, and Zhaoming Huang "Experimental study on humidity sensing using a FBG sensor with polyimide coating", Proc. SPIE 7990, Optical Sensors and Biophotonics II, 79900C (3 January 2011); https://doi.org/10.1117/12.887827

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available