| An all-optical switch of Mach－Zehnder interferometer type using an active fibre ring resonator |
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| 作者姓名： | 李俊庆 Alireza Bananej 励强华 陈强 李淳飞 |
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| 作者单位： | (1)Department of Physics, Harbin Institute of Technology, Harbin 150001, China; (2)Department of Physics, Harbin Institute of Technology, Harbin 150001, China; Department of Physics, Harbin Normal University, Harbin 150080, China |
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| 基金项目： | Project supported by the Scientific Research Foundation of Harbin Institute of Technology (Grant No HIT200250). |
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| 摘 要： | We propose an all-optical switch of the Mach－Zehnder interferometer type using an active nonlinear ring resonator and analyse the significance of the parameter A, a product of gain and total loss, for performing an ideal 1 by 2 switch. We found that in the range of 1-κ≤A≤sqrt{1-κ}, the increment of A can compensate the losses inside the ring, therefore increase the finesse of the ring and enhance the nonlinearity contribution to reduce the switching power threshold effectively. We also emphasize the importance of the initial switching point and discuss the feasibility of utilizing a high-nonlinear fibre in the ring.
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| 关 键 词： | 光纤光学器件 Mach-Zehnder干涉仪 光学通信系统 非线性光纤 可行性分析 |
| 收稿时间： | 2003-08-27 |
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