title: Simulation of path delay multiplexing-based Fourier transform spectrometer for fiber Bragg grating interrogation.
abstract: A Fourier transform spectrometer (FTS) used for interrogating a fiber Bragg grating (FBG) consists of a scanning-type interferometer. The FTS has a broad wavelength range of operation and good multiplexing capability. However, it has poor wavelength resolution and interrogation speed. We propose a modification to the FTS using path delay multiplexing to improve the same. Using this method, spatial resolution and interrogation time can be improved by n times by using n path delays. In this paper, simulation results for n=2, 5 are shown.
authors.forename: Pandian
authors.initials: P
authors.lastname: Chelliah
authors.forename: Trilochan
authors.initials: T
authors.lastname: Sahoo
authors.forename: Sheela
authors.initials: S
authors.lastname: Singh
authors.forename: Annie
authors.initials: A
authors.lastname: Sujatha