Citation:
Edmon Chehura, Stephen W. James, and Ralph P. Tatam. Rouard's method as a modelling tool for the sensing characteristics of complex
fibre Fabry-Perot interferometers formed between chirped fibre Bragg gratings. Proceedings of the SPIE 17th International Conference on Optical Fibre Sensors, 23-27 May 2005,
Bruges, Belgium. Volume 5855, 338. Eds. Marc Voet, Reinhardt Willsch, Wolfgang Ecke, Julian Jones, Brian Culshaw
Abstract:
Phase and spectral response characteristics of fibre Fabry-Perot interferometers
(FFPI), formed between linearly chirped fibre Bragg gratings (FBG), were
theoretically modelled using Rouard's method. The method models accurately the
phase shift through a complex grating structure which the transfer matrix model
is unable to achieve. The FBG FFPI cavities were modelled with variable free
spectral range that was tailored further to provide strain insensitivity and
strain enhancement by making the chirp parameter and cavity length satisfy the
desired conditions at a given wavelength of illumination.
