The light transmission characteristics in the total reflection photonic crystal fiber used in the liquid fiber sensors are investigated by using the finite element method. The double annular structure is analyzed in photonic crystal fibers, which was injected by the liquid. On the basis of providing theoretical model, the mode field distributions of PCF with different parameters are given, and then the influences of parameters on the mode area and energy distribution are discussed. The results indicate that when PCF is injected by the liquid, the light field experiences changing from diffusion to concentration. For the concave liquid surface, the energy distribution centralizes gradually with the increase of the inner ring radius, and the inherent property of liquid also influences the light transmission characteristic in PCF.

Date Published: 13 November 2007
PDF: 6 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64234Y (13 November 2007); doi: 10.1117/12.780091

Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering
Shanyi Du; Jinsong Leng; Anand K. Asundi, Editor(s)