All-optical modulator based on a ferrofluid core metal cladding waveguide chip  

作　　者：韩庆邦 殷澄 李建 汤一彬 单鸣雷 曹庄琪 

机构地区：[1]Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology,Hohai University [2]Department of Physics,State Key Lab of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong University

出　　处：《Chinese Physics B》2013年第9期470-473,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 11274091 and 11274092);the Fundamental Research Funds for the Central Universities of Hohai University, China (Grant No. 2011B11014)

摘　　要：We propose a novel optical intensity modulator based on the combination of a symmetrical metal cladding optical waveguide （SMCW） and ferrofluid, where the ferrofluid is sealed in the waveguide to act as a guiding layer. The light matter interaction in the ferrofluid film leads to the formation of a regular nanoparticle pattern, which changes the phase match condition of the ultrahigh order modes in return. When two lasers are incident on the same spot of the waveguide chip, experiments illustrate all-optical modulation of one laser beam by adjusting the intensity of the other laser. A possible theoretical explanation may be due to the optical trapping and Soret effect since the phenomenon is considerable only when the control laser is effectively coupled into the waveguide.We propose a novel optical intensity modulator based on the combination of a symmetrical metal cladding optical waveguide （SMCW） and ferrofluid, where the ferrofluid is sealed in the waveguide to act as a guiding layer. The light matter interaction in the ferrofluid film leads to the formation of a regular nanoparticle pattern, which changes the phase match condition of the ultrahigh order modes in return. When two lasers are incident on the same spot of the waveguide chip, experiments illustrate all-optical modulation of one laser beam by adjusting the intensity of the other laser. A possible theoretical explanation may be due to the optical trapping and Soret effect since the phenomenon is considerable only when the control laser is effectively coupled into the waveguide.

关 键 词：symmetrical metal cladding waveguide chip ultrahigh order modes FERROFLUIDS all-optical devices 

分 类 号：TN761[电子电信—电路与系统]