公开(公告)号：US06909826B2

公开(公告)日：2005-06-21

申请号：US09948325

申请日：2001-09-06

申请人： Yongming Cai ,  Christopher Stephen Koeppen ,  Stephan F. Wielandy

发明人： Yongming Cai ,  Christopher Stephen Koeppen ,  Stephan F. Wielandy

IPC分类号： G02B6/122 ,  G01J3/18 ,  G01J3/36 ,  G02B5/18 ,  G02B6/00 ,  G02B6/293 ,  G02B6/34 ,  G02B6/42 ,  H04B10/02 ,  H04B10/08 ,  H04J14/00 ,  H04J14/02

CPC分类号： G02B6/4249 ,  G01J3/18 ,  G02B6/02085 ,  G02B6/2931 ,  G02B6/29317 ,  G02B6/29323 ,  G02B6/29385 ,  G02B6/4215 ,  G02B6/4286 ,  G02B6/4287 ,  H04B10/077 ,  H04B10/07955

摘要： An optical monitoring arrangement utilizes the properties of a blazed Bragg grating to redirect a portion of an optical signal out of the axial path and into a detecting device. A plurality of blazed Bragg gratings are utilized, each having unique properties, to increase the robustness of the monitor. In particular, by utilizing a plurality of N gratings, the bandwidth of the monitor may be increased N-fold (assuming no overlap in wavelength between gratings). Alternatively, an improvement in resolution can be obtained by utilizing a narrower bandwidth and measuring N times the number of raw data points within that bandwidth. A combination of increase in bandwidth and resolution may be obtained by a comprise between these two extremes. Chirped blazed gratings may also be employed.

摘要翻译： 光学监测装置利用闪耀的布拉格光栅的特性将光信号的一部分重新定位在轴向路径外并进入检测装置。 使用多个闪耀的布拉格光栅，每个具有独特的性质，以增加监视器的鲁棒性。 特别地，通过利用多个N个光栅，监视器的带宽可以增加N倍（假设光栅之间的波长没有重叠）。 或者，通过利用较窄的带宽并测量该带宽内的原始数据点的数量N倍，可以获得分辨率的改善。 通过在这两个极端之间构成一个可以获得带宽和分辨率增加的组合。 也可以使用啁啾闪耀的光栅。

公开(公告)号：US07171130B2

公开(公告)日：2007-01-30

申请号：US10242589

申请日：2002-09-12

申请人： Michael Fishteyn ,  Tsing Hua Her ,  Stephan F. Wielandy

发明人： Michael Fishteyn ,  Tsing Hua Her ,  Stephan F. Wielandy

IPC分类号： H04B10/06 ,  H04B10/08

CPC分类号： H04B10/07951

摘要： An optical performance monitor particularly well-suited for use in dense wavelength-division multiplexed (DWDM) systems includes both a nonlinear optical detector and a conventional linear detector. The nonlinear optical detector, which may comprise a quadratic detector, is used to provide information, on a channel-by-channel basis, regarding chromatic dispersion, polarization mode dispersion and accumulated amplified spontaneous emission (ASE) noise in each signal wavelength.

摘要翻译： 特别适用于密集波分复用（DWDM）系统的光学性能监视器包括非线性光学检测器和常规线性检测器。 可以包括二次检测器的非线性光学检测器用于在逐个信道的基础上提供关于每个信号波长中的色散，偏振模色散和累积放大的自发发射（ASE）噪声的信息。