公开(公告)号：EP1520193A4

公开(公告)日：2011-07-27

申请号：EP02706201

申请日：2002-02-08

申请人： FINISAR CORP

发明人： XIE PING ,  WU SIMON YUANXIANG ,  MAO YALAN ,  WANG WEI ,  BETTMAN BRAD R ,  MALUF NADIM

IPC分类号： G02B6/27 ,  G02B6/12 ,  G02B6/28 ,  G02B6/293 ,  G02B6/34

CPC分类号： G02B6/272 ,  G02B6/12007 ,  G02B6/2773 ,  G02B6/2861 ,  G02B6/29302 ,  G02B6/2935 ,  G02B6/29355 ,  G02B6/29386 ,  G02B6/29394 ,  G02B2006/12109 ,  G02B2006/12116 ,  G02B2006/12164

公开(公告)号：EP1440339A4

公开(公告)日：2011-05-18

申请号：EP02768719

申请日：2002-08-26

申请人： FINISAR CORP

发明人： ZHANG KEVIN ,  XIE PING

IPC分类号： G02B6/32 ,  G02B6/34 ,  G02B6/38 ,  G02B6/42

CPC分类号： G02B6/2938 ,  G02B6/2937 ,  G02B6/29395 ,  G02B6/327 ,  G02B6/3845

公开(公告)号：EP1163751A4

公开(公告)日：2007-08-22

申请号：EP00992467

申请日：2000-09-27

申请人： FINISAR CORP

发明人： XIE PING

IPC分类号： H04J14/00 ,  G02B6/34 ,  H04B10/00 ,  H04J14/02

CPC分类号： G02B6/2938 ,  G02B6/29386 ,  H04J14/02

摘要： A method and apparatus for multiplexing/de-multiplexing optical signals is disclosed. The method and apparatus are applicable to a range of optical multiplexing techniques including, but not limited to: wavelength division multiplexing (WDM), dense wavelength division multiplexing (DWDM) and frequency division multiple accessing (FDMA). The disclosed devices do not require active components. The disclosed devices may be implemented with fiber or fiberless optical communication systems including telecommunications systems. The devices may be used on their own or as part of a larger system such as a multi-stage mux/demux, an optical switch, or router. In an embodiment of the invention, the devices are passively thermally stabilized with the result that their tuning is substantially invariant across a wide temperature range. The optical device includes a linear polarizer, wave plates and a beam displacer/combiner. The wave plates optically couple to the linear polarizer. The wave plates rotate both odd and even channel components of an optical beam between a linear and an orthogonal relationship depending on the propagation direction. Each wave plate is of a selected length and index of refraction which together determine a free spectral range which correspond to a spacing between adjacent gridlines of the selected wavelength grid. Each of the wave plates is tuned to even symmetry with the selected wavelength grid. The beam displacer/combiner displaces and combines orthogonally polarized odd and even channel components of an optical beam depending on a propagation direction.

摘要翻译： 公开了一种用于复用/解复用光学信号的方法和设备。 该方法和装置适用于一系列光复用技术，包括但不限于：波分复用（WDM），密集波分复用（DWDM）和频分多址（FDMA）。 所公开的设备不需要有源部件。 所公开的设备可以用包括电信系统的光纤或无光纤光通信系统来实现。 这些器件可以单独使用，也可以作为更大系统的一部分，例如多级多路复用器/解复用器，光开关或路由器。 在本发明的一个实施例中，器件被动热稳定，结果是它们的调谐在很宽的温度范围内基本不变。 该光学装置包括线性偏振器，波片和光束偏移器/组合器。 波片光学耦合到线偏振器。 波片根据传播方向在线性和正交关系之间旋转光束的奇数和偶数通道分量。 每个波片具有选定的长度和折射率，它们一起确定对应于所选波长栅格的相邻网格线之间的间隔的自由光谱范围。 每个波片被调谐到与所选波长网格均匀对称。 取决于传播方向，光束偏移器/组合器移位并组合光束的正交偏振的奇数和偶数通道分量。