High-precision optical fiber liquid-level sensor based on a sensitive and extrinsic Fabry-Perot interferometric cavity

Tao Lü; Desen Liu

doi:10.1117/12.725735

29 January 2007 High-precision optical fiber liquid-level sensor based on a sensitive and extrinsic Fabry-Perot interferometric cavity

Tao Lü, Desen Liu

Author Affiliations +

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62796B (2007) https://doi.org/10.1117/12.725735
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

A novel intensity-based optical fiber liquid-level sensor based on a sensitive and extrinsic Fabry-Perot (F-P) interferometric cavity is described in this paper. The novel sensing schemes combines the advantages of both interferometry sensors and intensity-based sensors. The sensor operates on a single fiber F-P interferometric cavity with a DFB-LD light source. The elastic silicon slice replaces conventional reflected multimode optical fiber in extrinsic optical fiber F-P sensor as sensing element. Several steps have been taken to eliminate or restrain temperature effect influencing on the sensing system. Experimental results indicate a precision as high as 1.2mm of a full scale 3.5m (water) is obtained. The optimized sensor can be used in explosive and flammable environment to measure liquid-level continuously and accurately.

Citation Download Citation

Tao Lü and Desen Liu "High-precision optical fiber liquid-level sensor based on a sensitive and extrinsic Fabry-Perot interferometric cavity", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62796B (29 January 2007); https://doi.org/10.1117/12.725735

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