Detailed Characterization of Optical Fibers by Combining S-2 Imaging With Correlation Filter Mode Analysis
Abbreviated Journal Title
J. Lightwave Technol.
Fiber characterization; fiber optics; large-mode area fiber; AREA FIBERS; BEAM QUALITY; HOLLOW-CORE; DECOMPOSITION; LASERS; INTERFEROMETRY; RECONSTRUCTION; INSTABILITIES; AMPLIFIERS; IMPACT; Engineering, Electrical & Electronic; Optics; Telecommunications
Spatially and spectrally resolved imaging (S-2 imaging) and correlation filter technique (CFT) are two very different, widespread fiber mode analysis techniques. Both techniques have been successfully employed to decompose few-modes and multimode beams respectively. In this study, we present a novel experimental tool combining S-2 imaging and CFT mode analyses in a unique system. We demonstrate that both methods are complementary with the ability to fully resolve scalar and vector-valued transverse modal fields. Using results from the combined experiment, mode powers (rho(2)) evaluated from CFT analysis and S-2 imaging are directly compared for a wide range of fiber beams (from single-to multi-mode). As a result, we experimentally identify the mode detection limit of each mode analysis and prove that S-2 imaging accuracy range can be considerably increased employing an analytical mode evaluation method. The conclusion contains a table summarizing the expertise of each mode analysis.
Journal of Lightwave Technology
"Detailed Characterization of Optical Fibers by Combining S-2 Imaging With Correlation Filter Mode Analysis" (2014). Faculty Bibliography 2010s. 5527.