期刊
OPTICS LETTERS
卷 44, 期 15, 页码 3685-3688出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.44.003685
关键词
-
类别
资金
- City University of Hong Kong (CityU) [7005062]
- Research Grants Council, University Grants Committee (RGC, UGC) [CityU 11202014]
We present an analysis of all-optical loss modulation in a graphene-buried waveguide based on the Pauli blocking effect. We show that, to realize effective loss modulation, both the signal light and the co-propagating control light must be polarized along the direction parallel to graphene's surface, and the loss-modulation efficiency is given by the ratio of the loss coefficients of the signal light and the control light. To demonstrate the principle, we fabricate two polymer wave-guide samples, one with a 0.6-mm-long graphene film buried in the center of the waveguide core and the other with a 10.0 mm-long graphene film placed on the top surface of the core. We achieve a loss modulation to 1550-nm signal light from 5.0 dB to 0.4 dB with a 980-nm control power varying from 6.5 dBm to 12. 5 dBm for the first sample, and from 8.0 dB to 0.5 dB with a control power varying from 14.5 dBm to 19.5 dBm for the second sample. The experimental results agree well with the theoretical analysis. A graphene-buried waveguide offers much flexibility as a platform for the realization of all-optical devices, such as optical switches, optical samplers, and optically tunable attenuators. (c) 2019 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据