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Appl Opt. 2015 Oct 20;54(30):8867-71. doi: 10.1364/AO.54.008867.

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.

PMID:
26560372
DOI:
10.1364/AO.54.008867

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