Fibre-optic metadevice for all-optical signal modulation based on coherent absorption

Angelos Xomalis (), Iosif Demirtzioglou, Eric Plum (), Yongmin Jung, Venkatram Nalla, Cosimo Lacava, Kevin F. MacDonald, Periklis Petropoulos, David J. Richardson and Nikolay I. Zheludev ()
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Angelos Xomalis: University of Southampton
Iosif Demirtzioglou: University of Southampton
Eric Plum: University of Southampton
Yongmin Jung: University of Southampton
Venkatram Nalla: Nanyang Technological University
Cosimo Lacava: University of Southampton
Kevin F. MacDonald: University of Southampton
Periklis Petropoulos: University of Southampton
David J. Richardson: University of Southampton
Nikolay I. Zheludev: University of Southampton

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Recently, coherent control of the optical response of thin films in standing waves has attracted considerable attention, ranging from applications in excitation-selective spectroscopy and nonlinear optics to all-optical image processing. Here, we show that integration of metamaterial and optical fibre technologies allows the use of coherently controlled absorption in a fully fiberized and packaged switching metadevice. With this metadevice, which controls light with light in a nanoscale plasmonic metamaterial film on an optical fibre tip, we provide proof-of-principle demonstrations of logical functions XOR, NOT and AND that are performed within a coherent fibre network at wavelengths between 1530 and 1565 nm. The metadevice has been tested at up to 40 gigabits per second and sub-milliwatt power levels. Since coherent absorption can operate at the single-photon level and with 100 THz bandwidth, we argue that the demonstrated all-optical switch concept has potential applications in coherent and quantum information networks.

Date: 2018
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DOI: 10.1038/s41467-017-02434-y

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