Detailed Characterization of Optical Fibers by Combining S-2 Imaging With Correlation Filter Mode Analysis

    Authors

    C. Jollivet; D. Flamm; M. Duparre;A. Schulzgen

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    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

    Abstract

    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 Title

    Journal of Lightwave Technology

    Volume

    32

    Issue/Number

    6

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    1068

    Last Page

    1074

    WOS Identifier

    WOS:000330218800001

    ISSN

    0733-8724

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