3 May 2013 Coherent super-position of multiple beams in a large mode area fiber
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Abstract
We examine through simulation and experiments the operation of multi-mode-optical fiber that reimages a periodic input optical pattern. Besides the observation of a partial Talbot self-imaging effect we also find a recurrence effect due to the core/cladding boundary of the optical fiber. We use the beam propagation method to simulate diffraction and refraction of light in the optical fiber device. The details of the device are described and its optical properties using a close-packed hexagonally-shaped array of apertures placed at regular positions on a triangular lattice are examined. Our simulations identify the optimal length of the Multi-mode fiber to get high fidelity self-image. Experiments are performed to validate the simulation results.
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Joseph W. Haus, Long Wang, Peter E. Powers, Andrew M. Sarangan, "Coherent super-position of multiple beams in a large mode area fiber", Proc. SPIE 8775, Micro-structured and Specialty Optical Fibres II, 87750G (3 May 2013); doi: 10.1117/12.2018765; https://doi.org/10.1117/12.2018765
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