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7 March 2019 Beam analysis with improved precision using enhanced SPGD algorithm for up-to-6-mode fiber laser
Kyuhong Choi, Changsu Jun
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Proceedings Volume 10897, Fiber Lasers XVI: Technology and Systems; 108972B (2019) https://doi.org/10.1117/12.2507678
Event: SPIE LASE, 2019, San Francisco, California, United States
Abstract
Analyzing modal contents of arbitrary beams from optical fiber provides useful information for high-power fiber laser and mode-division-multiplexed optical communication. Numerical modal decomposition can be applied to diverse applications universally without complicated setup, but often leads to a false solution which is called as a local minimum. We propose several ways to solve this issue and compare the results to find the best way for global optimization based on stochastic parallel gradient descent algorithm.
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Kyuhong Choi and Changsu Jun "Beam analysis with improved precision using enhanced SPGD algorithm for up-to-6-mode fiber laser", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108972B (7 March 2019); https://doi.org/10.1117/12.2507678
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KEYWORDS
Beam shaping
Beam analyzers
Error analysis
Fiber lasers
Optical fibers
Optimization (mathematics)
Stochastic processes
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