Research on 1×2 All Fiber High-speed Magneto-optic Switch
In this paper two new types of 1X2 all fiber high-speed magneto-optic switches with thick film ferromagnetic bismuthsubstituted rare-earth iron garnets are proposed and tested. Two types of magneto-optic switches are discussed by using two kinds of crystals. One is the ordinary switch which needs indurance magnetic field to maintain its state; And the other is latching type switch, the crystal remains in a given magnetic state for unlimited duration without energy supply. Circuits used to generate magnetic field are also discussed. The theoretical and experimental analysis of optical route, measurement of switching time and magnetic filed etc. are included. The extinction ratio of the switches are currently about 20 dB. It can be improved further by additional Faraday rotation created by another magneto-optic (MO) material in the light path. The switching time of MO material is under 100 ns, it can be ignored. Magnetic field should be able to change the voltage rapidly in order to obtain fast operating time of the optical switch. The inductance of the solenoid used for generating the required magnetic field is the bottleneck for rapid switching of the magnetic field in the MO material. The switching time of the two optical switch are discussed.
Faraday Effect magneto-optic switch polarization rotation extinction ratio switching time MO material.
Shaohan Lin Zihua Weng Minfeng Wang Xu Chen Jianjian Ruan
School of Physics and Mechanical & Electrical Engineering,Xiamen University,Xiamen 361005,China
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）