Open AccessMeasuring Bragg gratings in multimode optical fibers
Author(s) -
Markus Schmid,
Mathias S. Müller
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.008087
Subject(s) - multi mode optical fiber , optics , fiber bragg grating , optical fiber , coupled mode theory , mode coupling , materials science , mode scrambler , fiber optic sensor , phosfos , optoelectronics , physics , refractive index , plastic optical fiber
Fiber Bragg gratings (FBG) in multimode optical fibers provide a means for cost-effictive devices resulting in simplified and robust optic sensor systems. Parasitic mode effects in optical components of the entire measurement system strongly influence the measured multi-resonance reflection spectrum. Using a mode transfer matrix formalism we can describe these complex mode coupling effects in multimode optical systems in more detail. We demonstrate the accordance of the theory by two experiments. With this formalism it is possible to understand and optimize mode effects in multimode fiber optic systems.