Optical vortex generation with wavelength tunability based on an acoustically-induced fiber grating

Optical vortex generation with wavelength tunability based on an acoustically-induced fiber grating

We presented a method to actualize the optical vortex generation with wavelength tunability via an acoustically-induced fiber grating (AIFG) driven by a radio frequency source. The circular polarization fundamental mode could be converted to the first-order optical vortex through the AIFG, and its t...

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Veröffentlicht in:Optics express 2016-08, Vol.24 (17), p.19278-19285
Hauptverfasser: Zhang, Wending, Wei, Keyan, Huang, Ligang, Mao, Dong, Jiang, Biqiang, Gao, Feng, Zhang, Guoquan, Mei, Ting, Zhao, Jianlin
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container_end_page 19285
container_issue 17
container_start_page 19278
container_title Optics express
container_volume 24
creator Zhang, Wending
Wei, Keyan
Huang, Ligang
Mao, Dong
Jiang, Biqiang
Gao, Feng
Zhang, Guoquan
Mei, Ting
Zhao, Jianlin
description We presented a method to actualize the optical vortex generation with wavelength tunability via an acoustically-induced fiber grating (AIFG) driven by a radio frequency source. The circular polarization fundamental mode could be converted to the first-order optical vortex through the AIFG, and its topological charges were verified by the spiral pattern of coaxial interference between the first-order optical vortex and a Gaussian-reference beam. A spectral tuning range from 1540 nm to 1560 nm was demonstrated with a wavelength tunability slope of 4.65 nm/kHz. The mode conversion efficiency was 95% within the whole tuning spectral range.
doi_str_mv 10.1364/OE.24.019278
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title Optical vortex generation with wavelength tunability based on an acoustically-induced fiber grating
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