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    • 47. 发明授权
    • Depolarized semiconductor laser sources
    • 去极化半导体激光源
    • US06760151B1
    • 2004-07-06
    • US09559936
    • 2000-04-27
    • Edward C. VailMehrdad ZiariBernard FidricJianping ZhangStuart MacCormackVincent E. Dominic
    • Edward C. VailMehrdad ZiariBernard FidricJianping ZhangStuart MacCormackVincent E. Dominic
    • H01S300
    • H01S5/146H01S3/005H01S3/094003H01S3/094073H01S3/09415H01S5/06236H01S5/065H01S5/0652H01S5/0656
    • A semiconductor pump laser uses a depolarzer to depolarize the pump light entering the fiber amplifier. The depolarized light source is useful for reducing polarization dependent gain of fiber amplifiers. The pump laser includes one or more semiconductor, coherence-collapsed laser sources emitting polarized pump outputs, and one or more depolarizers disposed to depolarize the polarized pump output from the lasers. One or more fiber outputs are coupled to the one or more depolarizers to receive depolarized pump light. The depolarizer may include an N×M polarization preserving coupler having N inputs and M outputs, N and M being at least 2, an input to the depolarizer at a first coupler input, an output port from the depolarizer at a first coupler output. A polarization-controlling optical path is coupled between a second coupler output and a second coupler input. A polarization of light exiting the N×M coupler through the second coupler output is substantially orthogonal to a polarization of light entering the N×M coupler through the second coupler input.
    • 半导体泵浦激光器使用去极化器去除进入光纤放大器的泵浦光。 去极化光源对于减少光纤放大器的偏振相关增益是有用的。 泵浦激光器包括一个或多个发射偏振泵浦输出的半导体,相干折叠激光源和一个或多个去偏振器,其被设置为使来自激光器的偏振泵输出去极化。 一个或多个光纤输出耦合到一个或多个去偏振器以接收去极化的泵浦光。 去偏振器可以包括具有N个输入和M个输出,N和M至少为2的N×M偏振保持耦合器,在第一耦合器输入处的去偏振器的输入,来自第一耦合器输出处的去偏振器的输出端口。 偏振控制光路耦合在第二耦合器输出和第二耦合器输入之间。 通过第二耦合器输出离开NxM耦合器的光的极化基本上正交于通过第二耦合器输入进入NxM耦合器的光的偏振。