Intrinsic crosstalk analysis of a serial TDM FGB sensor array by using a tunable laser

The effect of spectral shadowing and multiple reflections in a serial fiber Bragg grating (FBG)-array are investigated. The wavelength detection errors for the distal FBG (reflectivity = 1%) in a 50-FBG array are 18 pm and 12 pm for spectral shadowing and multiple reflections, respectively. (C) 2003 Wiley Periodicals, Inc.