公开(公告)号：WO2002099368A1

公开(公告)日：2002-12-12

申请号：PCT/US2002/017111

申请日：2002-05-31

Applicant: CIDRA CORPORATION

Inventor： MOON, Jhon ,  JONES, Raph ,  WINSTON, Charles, ,  SIRKIS, James ,  FOURNIER, David ,  PINTO, Joseph ,  BRUCATO, Robert, N. ,  DUNPHY, James ,  CHESTNUT, Christopher

IPC: G01J3/06

CPC classification number: G01J3/28 ,  G01J3/02 ,  G01J3/0202 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0256 ,  G01J3/0291 ,  G01J3/06 ,  G01J3/32 ,  G01J3/36 ,  G01J2003/064 ,  G01J2003/1819 ,  G02B6/2706 ,  G02B6/2793 ,  G02B6/2931 ,  G02B6/29313 ,  G02B6/29314 ,  G02B6/29385 ,  G02B6/29398 ,  G02B6/3512 ,  G02B6/359 ,  G02B6/4215 ,  G02B6/4246 ,  H04B10/077 ,  H04B10/07955 ,  H04Q2011/0026 ,  H04Q2011/0049 ,  H04Q2011/0083

Abstract: An optical channel monitor is provided that sequentially or selectively filters an optical channel(s) (11) of light from a (WDM) optical input signal (12) and senses predetermined parameters of the each filtered optical signal (e.g., channel power, channel presence, signal-noise-ratio). The OCM (200) is a free-space optical device that includes a collimator assembly (224), a diffraction grating (214) and a mirror (202). A launch pigtail (220) emits into free space the input signal through the collimator assembly (224) and onto the diffraction grating (214), which separates spatially each of the optical channels (11) of the collimated light, and reflects the sep arated channels of light onto the mirror (202). The mirror reflects the separated light back to the diffraction grating (214), which reflects the channels of light back through the collimating lens. The lens focuses each separated channel of light (λ 1 - λ N ) at a different focal point in space. One of the optical channels (11) is focused onto a receive pigtail (204), which then propagates to a photodetector (206). A pivoting mechanism (201) pivots the mirror about a pivot point (203) to sequentially or selectively focus each optical channel (11) to the receive pigtail (204). A position sensor detects the displacement of the mirror. The position sensor comprises additional mirror (210, 212) mounted adjacently the grating (214). These mirrors deflect light reflected from the scanning mirror (202) into the pigtail (242) and provide there by start and stop reference signals for a scan cycle of the OCM.

Abstract translation: 提供了一种光通道监视器，其从（WDM）光输入信号（12）中顺序地或选择性地滤光光通道（11），并且感测每个滤波光信号的预定参数（例如，通道功率，通道 存在，信噪比）。 OCM（200）是包括准直器组件（224），衍射光栅（214）和反射镜（202）的自由空间光学装置。 发射尾纤（220）通过准直器组件（224）向衍射光栅（214）向空闲空间发射输入信号，该衍射光栅在空间上分离准直光的每个光通道（11），并将其分开 光通道到镜子（202）上。 反射镜将分离的光反射回衍射光栅（214），其反射通过准直透镜的光通道。 透镜将每个分离的光通道（λ1-λN）聚焦在空间中的不同焦点处。 光通道（11）中的一个被聚焦到接收引线（204）上，接收引线（204）然后传播到光电检测器（206）。 枢转机构（201）围绕枢转点（203）枢转镜子，以顺序地或选择性地将每个光学通道（11）聚焦到接收尾纤（204）。 位置传感器检测反射镜的位移。 位置传感器包括相邻地安装光栅（214）的附加反射镜（210,212）。 这些反射镜将从扫描镜（202）反射的光偏转到尾纤（242）中，并通过启动和停止OCM的扫描周期的参考信号来提供。