Fiber Bragg grating modeling, simulation and characteristics with different grating lengths

Abstract

In this paper we perform a simulation of fiber Bragg grating sensor with different grating lengths. It is shown that the grating length represents as one of the critical parameters in contributing to a high performance fiber Bragg grating sensor. The simulated fiber gratings with different lengths were analyzed and designed by calculating reflection and transmission spectra, and the bandwidth. Such simulations are based on solving coupled mode equations that describe the interaction of guided modes. The coupled mode equations are solved by the Transfer Matrix Method (a fundamental matrix method).

Simulation and analysis of Gaussian apodized fiber Bragg grating strain sensor

“…In various practical cases, this assumption gives a perceptive and exact mathematical description of electromagnetic wave propagation. [13][14][15][16] In the ideal mode approximation, the transverse component of the electric field along the grating is expressed as the superposition of the backward and forward propagation modes, as follow 17 :…”

Hydrogen detection with inverted chirped FBG sensor for disaster environment prevention

“…The most distinctive characteristic of fiber Bragg gratings is the flexibility they offer for achieving desired spectral characteristics [8,9,10]. In primary idea the Bragg grating acts as a simple spectral filter that allow a part of the incident signal to be reflected, see Fig.…”

“…In other hand, to make the proposed design work in maximum, we assume that each uniform Bragg section of the ICFBG gives the maximum reflectance which is modulated as [9,10,11]:…”

Apodized and chirped fiber Bragg gratings for optical communication systems: influence of grating profile on spectral reflectance

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