公开(公告)号：EP1389730A1

公开(公告)日：2004-02-18

申请号：EP02017193.0

申请日：2002-07-31

申请人： Agilent Technologies Inc. a Delaware Corporation

发明人： Schubert, Michael ,  Bogumil, Konstanze

IPC分类号： G01J4/04 ,  G01M11/02

CPC分类号： G01J4/04

摘要： Disclosed is a power detection device (11) for determining a polarization extinction ratio (PER) for aligning a polarization maintaining optical fiber (PMF) to an optical source providing a linear polarized optical signal. The power detection device (11) comprises a polarization signal splitting device (26), whereby the optical signal transmitted by the fiber (16) is split into a parallel polarized signal component (28) having a signal power value (P p ) and perpendicular polarized signal component (29) having a signal power value (P s ), which are measured by measuring elements (31,32). The polarization extinction ratio is derived from the determined signal power values P s and P p . If this ratio is maximized, one of the two principal polarization axes of the PMF (16) is coincident with the linear polarization state of the optical source (36). This allows a maximal maintaining of the polarization state at the end of the fiber.

摘要翻译： 公开了一种用于确定用于使偏振保持光纤（PMF）与提供线偏振光信号的光源对准的偏振消光比（PER）的功率检测装置（11）。 功率检测装置（11）包括偏振信号分离装置（26），由此由光纤（16）传输的光信号被分成具有信号功率值（Pp）和垂直极化的平行极化信号分量（28） 具有由测量元件（31,32）测量的信号功率值（Ps）的信号分量（29）。 偏振消光比由确定的信号功率值Ps和Pp导出。 如果该比率最大化，则PMF（16）的两个主偏振轴之一与光源（36）的线偏振状态一致。 这允许在光纤端部处的极化状态的最大维持。