Fast electrical switching of orbital angular momentum modes using ultra-compact integrated vortex emitters

Michael J. Strain (), Xinlun Cai (), Jianwei Wang, Jiangbo Zhu, David B. Phillips, Lifeng Chen, Martin Lopez-Garcia, Jeremy L. O’Brien, Mark G. Thompson, Marc Sorel () and Siyuan Yu
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Michael J. Strain: Institute of Photonics, University of Strathclyde, Wolfson Centre
Xinlun Cai: State Key Laboratory of Optoelectronic Materials and Technologies and School of Physics and Engineering, Sun Yatsen University
Jianwei Wang: Centre for Quantum Photonics, University of Bristol
Jiangbo Zhu: State Key Laboratory of Optoelectronic Materials and Technologies and School of Physics and Engineering, Sun Yatsen University
David B. Phillips: SUPA, School of Physics and Astronomy, University of Glasgow
Lifeng Chen: Photonics Research Group, Merchant Venturers School of Engineering, University of Bristol
Martin Lopez-Garcia: Photonics Research Group, Merchant Venturers School of Engineering, University of Bristol
Jeremy L. O’Brien: Centre for Quantum Photonics, University of Bristol
Mark G. Thompson: Centre for Quantum Photonics, University of Bristol
Marc Sorel: School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow G12 8LT, UK
Siyuan Yu: State Key Laboratory of Optoelectronic Materials and Technologies and School of Physics and Engineering, Sun Yatsen University

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract The ability to rapidly switch between orbital angular momentum modes of light has important implications for future classical and quantum systems. In general, orbital angular momentum beams are generated using free-space bulk optical components where the fastest reconfiguration of such systems is around a millisecond using spatial light modulators. In this work, an extremely compact optical vortex emitter is demonstrated with the ability to actively tune between different orbital angular momentum modes. The emitter is tuned using a single electrically contacted thermo-optical control, maintaining device simplicity and micron scale footprint. On–off keying and orbital angular momentum mode switching are achieved at rates of 10 μs and 20 μs respectively.

Date: 2014
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DOI: 10.1038/ncomms5856

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