Dynamically tunable optical bottles from an optical fiber

Yuhao Chen, Lu Yan, Lars Søgaard Rishøj, Paul Steinvurzel, Siddharth Ramachandran

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Abstract

Optical fibers have long been used to impose spatial coherence to shape free-space optical beams. Recent work has shown that one can use higher order fiber modes to create more exotic beam profiles. We experimentally generate optical bottles from Talbot imaging in the coherent superposition of two fiber modes excited with long period gratings, and obtain a 28 μm × 6 μm bottle with controlled contrast up to 10.13 dB. Our geometry allows for phase tuning
of one mode with respect to the other, which enables us to dynamically move the bottle in free space.
Original languageEnglish
JournalOptics Letters
Volume37
Issue number16
Pages (from-to)3327-3329
ISSN0146-9592
Publication statusPublished - 2012

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