Numerical evaluation of fiber optic evanescent wave sensor

Hang Ruan; Yaosheng Chen; Shaowu Chen; Mingqiu Xue

doi:10.1117/12.252160

24 September 1996 Numerical evaluation of fiber optic evanescent wave sensor

Hang Ruan, Yaosheng Chen, Shaowu Chen, Mingqiu Xue

Proceedings Volume 2895, Fiber Optic Sensors V; (1996) https://doi.org/10.1117/12.252160
Event: Photonics China '96, 1996, Beijing, China

Abstract

Fiber-optic evanescent wave sensor which consists of two D- fibers is analyzed by vectorial finite element method (VFEM) in this paper. Spurious solutions are eliminated out of the region of effective modes by the penalty variation principle. Utilizing mode coupling theory and choosing a large number of finite elements with a number of nodes N equals 1048, several important results for designing the fiber-optic evanescent wave in sensing region is obtained. The relative parameters, including the interval and distance of coupling region, the radii and refractive indices of the D-shape fibers, and the characteristics of sensing medium, are derived. Consequently, the contour map of those parameters is presented, and for a certain medium in sensing region, it is convenient to design an optimal contribution of those parameters.

Citation Download Citation

Hang Ruan, Yaosheng Chen, Shaowu Chen, and Mingqiu Xue "Numerical evaluation of fiber optic evanescent wave sensor", Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996); https://doi.org/10.1117/12.252160

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