文章基本信息

标题：Resonance-enhanced all-optical modulation of WSe2-based micro-resonator
本地全文：下载
作者：Zijian Zhang ; Guowei Chen ; Mingyu Yang 等
期刊名称：Nanophotonics
印刷版ISSN：2192-8606
电子版ISSN：2192-8614
出版年度：2019
卷号：-1
期号：ahead-of-print
页码：1-10
DOI：10.1515/nanoph-2019-0425
出版社：Walter de Gruyter GmbH
摘要：Two-dimensional material tungsten diselenide (WSe 2 ) nanosheets are coated on a microfibre knot resonator (MKR) to achieve an all-optical power modulation functionality. On account of the strong absorption property of WSe 2 and the resonance enhancement properties of MKR, the transmitted optical power of signal light within the WSe 2 -based MKR can be effectively modulated. The sensitivities of light–control–light experiments with 405- and 660-nm lasers are as high as 0.32 and 0.12 dB/mW, respectively. The sensitivities and power tuning can be enhanced by a higher resonance Q and a larger extinction ratio of MKR. In terms of the response time, the average rise and fall times are 3.5/3.7 and 3.5/4 ms with 405- and 660-nm lasers, respectively. This proposed structure is expected to achieve potential applications in all-fibre-optic–based tunable device such as optical modulator, detector, and so on..
关键词：two;dimensional material ; tungsten diselenide ; resonance enhance ; microfibre knot resonator