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1. 发明申请

WO2006008830A1 ALL-OPTICAL POLARIZATION ROTATION SWITCH USING A LOOP CONFIGURATION 审中-公开
标题翻译：使用环路配置的全光偏振旋转开关
公开(公告)号：WO2006008830A1
公开(公告)日：2006-01-26
申请号：PCT/JP2004/010790
申请日：2004-07-22
申请人： FUJITSU LIMITED , HAINBERGER, Rainer , WATANABE, Shigeki
发明人： HAINBERGER, Rainer , WATANABE, Shigeki
IPC分类号： G02F1/01
CPC分类号： G02F1/0136 , G02F1/3519
摘要： All-optical polarization rotation switch is disclosed. A linearly probe light is split by a polarization beam splitter (PBS) (14) into two orthogonal linear polarization components, which are coupled with respective ends of a nonlinear optical fiber (18) in loop configuration. A linearly polarized control pump light is launched into one direction of the fiber (18). The probe light component co-propagating with the control light pulse undergoes a nonlinear phase shift due to cross phase modulation (XPM). The phase shift of the light co-propagating with the control pulse thus causes a rotation of the recombined light output from the BPS. The rotation is detected by using a polarizer. Exploiting XPM instead of the nonlinear birefringence enables the uses of highly nonlinear polarization-maintaining fiber.
摘要翻译：公开了全光偏振旋转开关。线性探测光被偏振分束器（PBS）（14）分离成两个正交的线性偏振分量，它们以环形配置与非线性光纤（18）的相应末端耦合。线性偏振控制泵浦光沿光纤（18）的一个方向发射。与控制光脉冲共传播的探测光分量由于交叉相位调制（XPM）而经历非线性相移。因此与控制脉冲共同传播的光的相移因此导致从BPS输出的重新组合的光的旋转。通过使用偏振器来检测旋转。利用XPM代替非线性双折射能够实现高度非线性的偏振保持光纤的应用。

2. 发明申请

WO2005093497A1 APPARATUS FOR CONTROLLING POLARIZATION OF LIGHT IMPUTED TO POLARIZATION-MAINTAINING WAVEGUIDE COMPONENTS 审中-公开
标题翻译：用于控制偏向保持波导部件的光的极化的装置
公开(公告)号：WO2005093497A1
公开(公告)日：2005-10-06
申请号：PCT/JP2004/004187
申请日：2004-03-25
申请人： FUJITSU LIMITED , HAINBERGER, Rainer , WATANABE, Shigeki
发明人： HAINBERGER, Rainer , WATANABE, Shigeki
IPC分类号： G02F1/01
CPC分类号： H04B10/2572 , G02F1/0123 , G02F1/0136
摘要： A nonlinear birefringent waveguide is used for four wave mixing, wavelength conversion, Raman amplification, etc. In order to adjust the polarization of the input light to such waveguide 14, a polarization controller 10 is provided. And at the output side of the waveguide 14, a polarization beam splitter is provided. The polarization beam splitter splits one of orthogonal polarizations which is not desired to be passed through. The power of the split light is detected at photodiode 13. The detection signal of the photodiode 13 is fed back to the polarization controller 10. The polarization controller 10 controls the polarization of input light so that the power of light detected at the photodiode 13 is minimized.
摘要翻译：非线性双折射波导用于四波混频，波长转换，拉曼放大等。为了调节输入光到这种波导14的极化，提供了偏振控制器10。并且在波导14的输出侧设置偏振分束器。偏振分束器分裂不希望通过的正交偏振之一。分离光的功率在光电二极管13处被检测。光电二极管13的检测信号被反馈给偏振控制器10.偏振控制器10控制输入光的偏振，使得在光电二极管13处检测的光的功率为最小化。

3. 发明申请

WO2005004359A1 OPTICAL REGENERATOR IN OPTICAL FIBER COMMUNICATION SYSTEM 审中-公开
标题翻译：光纤通信系统中的光学再生器
公开(公告)号：WO2005004359A1
公开(公告)日：2005-01-13
申请号：PCT/JP2003/008316
申请日：2003-06-30
申请人： FUJITSU LIMITED , HAINBERGER, Rainer , WATANABE, Shigeki
发明人： HAINBERGER, Rainer , WATANABE, Shigeki
IPC分类号： H04B10/17
CPC分类号： H04B10/2942
摘要： In an optical fiber communication system, the input power to an all-optical nonlinear device in an optical regenerator is monitored and adjusted such that the regenerator operates at an optimized operation point.
摘要翻译：在光纤通信系统中，对光再生器中的全光非线性装置的输入功率进行监视和调整，使得再生器在优化的操作点运行。

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