All-fiber optical modulator based on no-core fiber and magnetic fluid as cladding  

作　　者：陈耀飞 韩群 刘铁根 

机构地区：[1]College of Precision Instrument and Opto-Electronics Engineering,Tianjin University [2]Key Laboratory of Opto-electronics Information Technology of Ministry of Education,Tianjin University

出　　处：《Chinese Physics B》2015年第1期315-320,共6页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Tianjin City,China(Grant No.13JCYBJC16100);the National Natural Science Foundation of China(Grant No.61107035);the National Key Scientific Instrument and Equipment Development Project of China(Grant No.2013YQ03091502);the National Basic Research Program of China(Grant Nos.2010CB327802 and 2010CB327806)

摘　　要：An all-fiber optical modulator, which is composed of a piece of no-core fiber spliced between two sections of singlemode fibers and uses magnetic fluid（MF） as the cladding of the no-core fiber section, is proposed and investigated experimentally. Due to the tunable refractive index and absorption coefficient of MF, the output intensity can be modulated by controlling an applied magnetic field. The dependences of the modulator＇s temporal response on the working wavelength,the magnetic field strength（H）, and the MF＇s concentration are investigated experimentally. The results are explained qualitatively by the dynamic response process of MF under the action of a magnetic field. The findings are helpful for optimizing this kind of modulator.An all-fiber optical modulator, which is composed of a piece of no-core fiber spliced between two sections of singlemode fibers and uses magnetic fluid（MF） as the cladding of the no-core fiber section, is proposed and investigated experimentally. Due to the tunable refractive index and absorption coefficient of MF, the output intensity can be modulated by controlling an applied magnetic field. The dependences of the modulator＇s temporal response on the working wavelength,the magnetic field strength（H）, and the MF＇s concentration are investigated experimentally. The results are explained qualitatively by the dynamic response process of MF under the action of a magnetic field. The findings are helpful for optimizing this kind of modulator.

关 键 词：optical fiber optical modulator no-core fiber magnetic fluid 

分 类 号：TN761[电子电信—电路与系统] TN256