Graphene decorated microfiber for ultrafast optical modulation

We demonstrate ultrafast optical modulation using a single 1-μm-diameter graphene-decorated microfiber, which is fabricated with a convenient and controllable evanescent-field-induced deposition method. Benefitting from the significantly enhanced light-graphene interaction of the subwavelength trans...

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Bibliographic Details
Published in:Optics express 2015-04, Vol.23 (8), p.10764-10770
Main Authors: Yu, Shaoliang, Meng, Chao, Chen, Bigeng, Wang, Hongqing, Wu, Xiaoqin, Liu, Weitao, Zhang, Shangjian, Liu, Yong, Su, Yikai, Tong, Limin
Format: Article
Language:English
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Summary:We demonstrate ultrafast optical modulation using a single 1-μm-diameter graphene-decorated microfiber, which is fabricated with a convenient and controllable evanescent-field-induced deposition method. Benefitting from the significantly enhanced light-graphene interaction of the subwavelength transvers dimension of the microfiber and accumulation of the saturable absorption of the piled graphene flakes, the microfiber shows nonlinear saturable absorption with a peak power threshold down to 1.75 W (60 MW/cm(2)), with a measured response time of about 3.5 ps.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.010764