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Dielectric Broadband Metasurfaces for Fiber Mode‐Multiplexed Communications
Author(s) -
Nazemosadat Elham,
Mazur Mikael,
Kruk Sergey,
Kravchenko Ivan,
Carpenter Joel,
Schröder Jochen,
Andrekson Peter A.,
Karlsson Magnus,
Kivshar Yuri
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201801679
Subject(s) - multiplexer , multiplexing , polarization division multiplexing , broadband , optics , multi mode optical fiber , quadrature amplitude modulation , materials science , qam , polarization (electrochemistry) , optoelectronics , dielectric , physics , wavelength division multiplexing , optical fiber , wavelength , telecommunications , computer science , bit error rate , channel (broadcasting) , chemistry
A subwavelength‐thick spatial‐mode multiplexer based on a highly transparent all‐dielectric Mie‐resonant metasurface is demonstrated with a broadband response covering major optical communication wavelength bands. The metasurface is employed to convert simultaneously each orthogonal polarization of LP 01 inputs into individual higher‐order TM 01 and TE 01 vectorial modes, without the need of a polarization diversity setup. This is not feasible using current mode multiplexing approaches. An LP 01 polarization‐multiplexed 51 × 64 quadrature amplitude modulation (QAM) superchannel, with a 10.3 bits s −1 Hz −1 spectral‐efficiency and total bit‐rate of 13.2 Tb s −1 , is converted to higher‐order modes with the metasurface multiplexer, and then mode‐multiplexed data is transmitted over a multimode fiber. The results demonstrate the potential application of these metadevice‐based mode multiplexers in space‐division multiplexed systems.