TITLE:
Study on Insertion Loss of Fiber Fabry-Perot Filters
AUTHORS:
Sheng-Nan Su, Hai-Bing Qi, Yong-Lin Yu
KEYWORDS:
FFP Filter; Insertion Loss; Finesse
JOURNAL NAME:
Journal of Computer and Communications,
Vol.1 No.7,
December
2,
2013
ABSTRACT: Fiber Fabry-Perot (FFP) filters have been
widely used in optical fiber communications, and insertion loss (IL) is one of its
important characteristics. Based on theoretically analysis, factors related to IL
were discussed. In order to investigate the IL of different structures, simulations
are carried out with finite-difference time-domain (FDTD) algorithm. Comparisons
are made between the optimized structure and full-size-mirror FFP filter, and fiber-inserted
FFP filter as well. Simulation results demonstrated that the finite- size-mirror
structure can confine the mode size of the open resonator, hence reduce the IL of
FFP filter.