公开(公告)号：US06559984B1

公开(公告)日：2003-05-06

申请号：US09434843

申请日：1999-11-04

申请人： Chang Hee Lee ,  Sang Yung Shin ,  Chu Kwang Uk

发明人： Chang Hee Lee ,  Sang Yung Shin ,  Chu Kwang Uk

IPC分类号： H04B1008

CPC分类号： H04B10/0773 ,  H04B10/0771 ,  H04B2210/075 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0276 ,  H04J14/0298 ,  H04Q11/0005 ,  H04Q2011/0049 ,  H04Q2011/0083

摘要： The present invention relates to an optical path monitoring device on the basis of the identification of input ports in optical cross-connect systems. An optical path monitoring apparatus in an optical cross-connect system is provided. The optical cross-connect system in accordance with the present invention includes input ports, wavelength-division demultiplexers, optical switching devices, a control device, optical power regulating devices, wavelength-division multiplexers, and output ports. The optical path monitoring apparatus in accordance with the present invention includes a plurality of pilot tone superimposers, a plurality of optical splitters, and a plurality of pilot tone detectors.

摘要翻译： 本发明涉及光路监测装置，其基于光交叉连接系统中输入端口的识别。 提供了一种光交叉连接系统中的光路监视装置。 根据本发明的光交叉连接系统包括输入端口，波分解复用器，光交换设备，控制设备，光功率调节设备，波分复用器和输出端口。 根据本发明的光路监测装置包括多个导频音叠加器，多个分光器和多个导频音检测器。

公开(公告)号：US06671045B1

公开(公告)日：2003-12-30

申请号：US09679822

申请日：2000-10-05

申请人： Chang Hee Lee ,  Sang Yung Shin ,  Kwang Uk Chu

发明人： Chang Hee Lee ,  Sang Yung Shin ,  Kwang Uk Chu

IPC分类号： G01J400

CPC分类号： H04B10/077 ,  G01J4/04 ,  H04B10/07955

摘要： An apparatus and method for measuring optical signal-to-noise ratio in optical communications includes (1) a variable optical band-pass filter (VOBPF) that passes the amplified output beam when the beam wavelength is the same as the passing wavelength of the VOBPF; (2) a 1×4 beam distributor for distributing the passing beam of the VOBPF into four streams; (3) a measuring device for measuring Stokes parameters S0, S1, S2, S3 from the four distributed beams; (4) a calculating device for calculating the optical signal power by finding the power of the polarized component of the amplified output beam from the Stokes parameters S1, S2, and S3; (5) a calculating device for calculating the noise power by finding the power of the noise included in the amplified output beam from Stokes parameter S0 and the optical signal power; and (6) a dividing device for calculating the ratio Power ⁢   ⁢ of ⁢   ⁢ Optical ⁢   ⁢ Signal Power ⁢   ⁢ of ⁢   ⁢ Noise at the passing wavelength.

摘要翻译： 用于测量光通信中的光信噪比的装置和方法包括：（1）当光束波长与VOBPF的通过波长相同时，通过放大的输出光束的可变光学带通滤波器（VOBPF） ; （2）1x4光束分配器，用于将VOBPF的通过光束分配成四个流; （3）用于从四个分布式波束测量斯托克斯参数S0，S1，S2，S3的测量装置; （4）计算装置，用于通过从斯托克斯参数S1，S2和S3中找出放大的输出光束的偏振分量的功率来计算光信号功率; （5）一种计算装置，用于通过从Stokes参数S0和光信号功率中找出包含在放大的输出光束中的噪声的功率来计算噪声功率; 和（6）用于计算通过波长的比值的分割装置。

公开(公告)号：US06396574B1

公开(公告)日：2002-05-28

申请号：US09524156

申请日：2000-03-14

申请人： Chang Hee Lee ,  Sang Yung Shin ,  Kwang Uk Chu

发明人： Chang Hee Lee ,  Sang Yung Shin ,  Kwang Uk Chu

IPC分类号： G01N2100

CPC分类号： G01J1/4257 ,  G01J9/00 ,  G01J2009/0226 ,  G02B6/29319 ,  G02B6/29358 ,  G02B6/2938 ,  G02B6/29395 ,  H04B10/077 ,  H04B10/07955

摘要： An apparatus for measuring the wavelength, optical power, and an optical signal-to-noise ratio (OSNR) of each optical signal in wavelength-division-multiplexing optical communication includes: elements for splitting a part of wavelength-division-multiplexed (WDM) signals, elements for amplifying the WDM signals and generating spontaneous emission light simultaneously, elements for reflecting a predetermined section of the spontaneous emission light and generating an optical reference signal, and elements for combining the optical reference signal with the part of the WDM signals split by the splitting elements and generating a combined light. The apparatus has components for filtering the combined light at a fixed temperature and generating a waveform which is the same as an optical spectrum of the combined light in the time domain. The apparatus includes elements for converting the waveform into an electrical signal and components for signal processing that measure the wavelength, the optical power, and the OSNR of the WDM signals.

摘要翻译： 用于测量波分复用光通信中每个光信号的波长，光功率和光信噪比（OSNR）的装置包括：用于将波分复用（WDM） 信号，用于放大WDM信号并同时产生自发发射光的元件，用于反射自发发射光的预定部分并产生光学参考信号的元件，以及用于将光学参考信号与WDM信号的一部分分开的元件 分离元件并产生组合光。 该装置具有用于在固定温度下对组合光进行滤波的部件，并产生与时域中的组合光的光谱相同的波形。 该装置包括用于将波形转换成电信号的元件和用于信号处理的组件，用于测量WDM信号的波长，光功率和OSNR。