par Bao, Qiaoliang;Lim, Candy Haley Yi Xuan;Wang, Yu;Kian Ping, Loh;Zhang, Han 
;Tang, Ding Yuan;Wang, Bing;Ni, Zhenhua
Référence Nature Photonics, 5, 7, page (411-415)
Publication Publié, 2011-07
;Tang, Ding Yuan;Wang, Bing;Ni, ZhenhuaRéférence Nature Photonics, 5, 7, page (411-415)
Publication Publié, 2011-07
Article révisé par les pairs
| Résumé : | Conventional polarizers can be classified into three main modes of operation: sheet polarizer using anisotropic absorption media, prism polarizer by refraction and Brewster-angle polarizer by reflection. These polarizing components are not easily integrated with photonic circuits. The in-line fibre polarizer, which relies on polarization-selective coupling between the evanescent field and birefringent crystal or metal, is a promising alternative because of its compatibility with most fibre-optic systems. Here, we demonstrate the operation of a broadband fibre polarizer based on graphene, an ultrathin two-dimensional carbon material. The out-coupled light in the telecommunication band shows a strong s-polarization effect with an extinction ratio of 27 dB. Unlike polarizers made from thin metal film, a graphene polarizer can support transverse-electric-mode surface wave propagation due to its linear dispersion of Dirac electrons. © 2011 Macmillan Publishers Limited. All rights reserved. |
