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Published on: February 28, 2016
Measuring the spatial polarization distribution of multimode beams emerging from passive step-index large-mode-area
Daniel Flamm1, Oliver A Schmidt, Christian Schulze
1Institute of Applied Optics, Friedrich-Schiller-University Jena, Fröbelstieg 1, D-07743 Jena Germany. daniel.flamm@uni‑jena.de
Abstract:
We measure the polarization state of each guided transversal mode propagating in step-index large-mode-area fibers (V≈4) using a correlation-filter based measurement technique in combination with a Stokes parameter measurement. The entire emerging beam, expressed in terms of a phase-dependent superposition of linearly polarized modes, demonstrates spatially varying polarization properties. By knowing the information about modal amplitudes and phase differences, full information about the optical field is available.
