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1. 发明授权

US07405870B2 Method and apparatus for amplified spontaneous emission corrected automatic signal power control of an optical amplifier 有权
标题翻译：用于光放大器的放大自发发射校正的自动信号功率控制的方法和装置
公开(公告)号：US07405870B2
公开(公告)日：2008-07-29
申请号：US11645161
申请日：2006-12-26
申请人： Lijie Qiao , Paul J. Vella
发明人： Lijie Qiao , Paul J. Vella
IPC分类号： H01S3/00
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/1305 , H01S2301/02
摘要： An optical amplifier system and controller and a method for automatically controlling the usable signal power of an optical amplifier are provided. The method differentiates between the total optical power that includes the amplified spontaneous emission (ASE), and the useful amplified optical signal power at the output of the amplifier. The optical amplifier system comprises an optical amplifier, a first and a second photodetector operable to measure the power of the input and output signals of the optical amplifier and an amplification controller with a control input. The amplification controller is operable to compensate for the ASE power when operating in automatic signal power control mode.
摘要翻译：提供一种光放大器系统和控制器以及用于自动控制光放大器的可用信号功率的方法。该方法区分包括放大的自发发射（ASE）的总光功率和放大器输出端的有用放大光信号功率。光放大器系统包括光放大器，第一和第二光电检测器，其可操作以测量光放大器的输入和输出信号的功率以及具有控制输入的放大控制器。放大控制器可操作以在以自动信号功率控制模式操作时补偿ASE功率。

2. 发明授权

US07457032B2 Arrangement, system, and method for accurate power measurements using an optical performance monitor (OPM) 有权
标题翻译：使用光学性能监视器（OPM）进行精确功率测量的布置，系统和方法
公开(公告)号：US07457032B2
公开(公告)日：2008-11-25
申请号：US11231874
申请日：2005-09-22
申请人： Lijie Qiao , Paul J. Vella
发明人： Lijie Qiao , Paul J. Vella
IPC分类号： H04B10/08 , H04B10/17
CPC分类号： H04B10/07955 , H04B10/07953
摘要： An arrangement has a WDT (Wavelength-Dependent Tap) coupled in an OCS (Optical Communication System) and an OPM (Optical Performance Monitoring) function coupled to the WDT. The WDT is adapted to receive from the OCS an input optical signal having noise and channels at respective channel wavelengths. The WDT couples to an output some of the input optical signal at the channel wavelengths and most of a noise power at wavelengths between the channel wavelengths, and couples a remaining portion of the input optical signal back into the optical communication system. The optical performance monitoring function determines a power characteristic of the input optical signal as a function of a power from the output. The power characteristic may be an OSNR (Optical Signal-to-Noise Ratio) determined as a function of a signal power and a noise power of the output optical signal.
摘要翻译：一种布置具有耦合到OCS（光通信系统）中的WDT（波长相关抽头）和耦合到WDT的OPM（光学性能监视）功能。 WDT适于从OCS接收具有各个信道波长的噪声和信道的输入光信号。 WDT在通道波长处的输出光信号中输出一些输入光信号，并且在通道波长之间波长处的噪声功率的大部分耦合，并将输入光信号的剩余部分耦合回光通信系统。光学性能监视功能根据输出的功率确定输入光信号的功率特性。功率特性可以是根据信号功率和输出光信号的噪声功率确定的OSNR（光信噪比）。

3. 发明授权

US07324268B2 Optical signal amplifier and method 有权
标题翻译：光信号放大器及方法
公开(公告)号：US07324268B2
公开(公告)日：2008-01-29
申请号：US10800747
申请日：2004-03-16
申请人： Lijie Qiao , Paul J. Vella
发明人： Lijie Qiao , Paul J. Vella
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H04B10/294 , H01S3/005 , H01S3/0064 , H01S3/0078 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/1608 , H04B2210/003
摘要： An optical amplification apparatus is provided comprising a plurality of fiber amplification media segments which are concatenated in series wherein subsequent to each fiber amplification media segment one or more wavelengths is dropped so as to exploit a gain versus fiber amplification media physical length characteristic. By exploiting the gain versus fiber amplification media physical length characteristic in such a manner it is possible to achieve a substantially flat gain response for a multi-wavelength output of the optical amplification apparatus. Some embodiments of the invention combine noise suppression and additional gain flattening on one or more wavelengths. Embodiments of the optical amplification apparatus can be used in red-band wavelength range applications of coarse wavelength division multiplexing (CWDM). Some embodiments of the invention also provide that the optical amplification apparatus can be used as a hybrid dense wavelength division multiplexing (DWDM) and CWDM optical amplifier.
摘要翻译：提供了一种光学放大装置，其包括串联连接的多个光纤放大介质段，其中随后的每个光纤放大介质区段落下一个或多个波长，以利用增益对光纤放大介质的物理长度特性。通过以这种方式利用增益对光纤放大介质的物理长度特性，可以实现对于光放大装置的多波长输出的基本平坦的增益响应。本发明的一些实施例将噪声抑制和附加增益平坦化结合在一个或多个波长上。光放大装置的实施例可以用于粗波分复用（CWDM）的红带波长范围应用。本发明的一些实施例还提供了光放大装置可以用作混合密集波分复用（DWDM）和CWDM光放大器。

4. 发明申请

US20070297044A1 Method and apparatus for amplified spontaneous emission corrected automatic signal power control of an optical amplifier 有权
标题翻译：用于光放大器的放大自发发射校正的自动信号功率控制的方法和装置
公开(公告)号：US20070297044A1
公开(公告)日：2007-12-27
申请号：US11645161
申请日：2006-12-26
申请人： Lijie Qiao , Paul J. Vella
发明人： Lijie Qiao , Paul J. Vella
IPC分类号： H01S3/00
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/1305 , H01S2301/02
摘要： An optical amplifier system and controller and a method for automatically controlling the usable signal power of an optical amplifier are provided. The method differentiates between the total optical power that includes the amplified spontaneous emission (ASE), and the useful amplified optical signal power at the output of the amplifier. The optical amplifier system comprises an optical amplifier, a first and a second photodetector operable to measure the power of the input and output signals of the optical amplifier and an amplification controller with a control input. The amplification controller is operable to compensate for the ASE power when operating in automatic signal power control mode.
摘要翻译：提供一种光放大器系统和控制器以及用于自动控制光放大器的可用信号功率的方法。该方法区分包括放大的自发发射（ASE）的总光功率和放大器输出端的有用放大光信号功率。光放大器系统包括光放大器，第一和第二光电检测器，其可操作以测量光放大器的输入和输出信号的功率以及具有控制输入的放大控制器。放大控制器可操作以在以自动信号功率控制模式操作时补偿ASE功率。

5. 发明授权

US4950046A Fiber optic coupler 失效
标题翻译：光纤耦合器
公开(公告)号：US4950046A
公开(公告)日：1990-08-21
申请号：US442878
申请日：1989-11-28
申请人： Richard P. Hughes , Vincent C. Y. So , Paul J. Vella
发明人： Richard P. Hughes , Vincent C. Y. So , Paul J. Vella
IPC分类号： G02B6/28 , G02B6/42
CPC分类号： G02B6/2852 , G02B6/4259 , G02B6/4289 , G02B6/4285
摘要： A fiber optic coupler has a cylindrical rod protruding along the apex of an angled block. An optical waveguide is mounted to extend around part of the circumferential of the rod. A transparent body is located on the side of the fiber remote from the rod, and the rod and the body are biased together to bend the fiber around the rod surface and to form an intimate contact between the transparent body and the curved part of the fiber. A light input or output device is positioned to direct light at or receive light from the curved fiber part through the transparent body.
摘要翻译：光纤耦合器具有沿倾斜块的顶点突出的圆柱形杆。安装光波导以围绕杆的周向的一部分延伸。透明体位于远离杆的纤维侧，并且杆和体被偏压在一起以将纤维围绕杆表面弯曲并且在透明体和纤维的弯曲部分之间形成紧密接触。光输入或输出装置被定位成通过透明体将光引导或接收来自弯曲纤维部分的光。

6. 发明授权

US4551019A Measuring chromatic dispersion of fibers 失效
标题翻译：测量纤维的色散
公开(公告)号：US4551019A
公开(公告)日：1985-11-05
申请号：US521003
申请日：1983-08-08
申请人： Paul J. Vella , Philip M. Garel-Jones , Richard S. Lowe
发明人： Paul J. Vella , Philip M. Garel-Jones , Richard S. Lowe
IPC分类号： G01M11/00 , G01N21/84
CPC分类号： G01M11/335 , G01M11/333 , G01M11/338
摘要： The chromatic dispersion of an optical fiber such as a 10 to 50 km length of single mode fiber is measured by launching into the fiber the outputs of at least three commonly modulated semiconductor lasers having output wavelengths close to a region of minimum chromatic dispersion of the fiber. At a remote end of the fiber the relative phases of the signals from the three lasers are determined and a chromatic dispersion profile of the fiber is derived from the measured relative phases and the output wavelenghts of the lasers by assuming a parabolic relationship between signal propagation times and wavelength. The profile can be determined by defferentiating a parabolic function fitted to the three date points derived using said three lasers or by directly generating a linear relationship between chromatic dispersion and wavelength on the basis of two values of chromatic dispersion derived from these three data points.
摘要翻译：通过向光纤发射具有输出波长接近光纤的最小色散区域的至少三个共同调制的半导体激光器的输出来测量诸如10到50km长的单模光纤之类的光纤的色散。在光纤的远端，确定来自三个激光器的信号的相对相位，并且通过假设信号传播时间之间的抛物线关系，从所测量的相对相位和激光器的输出波长导出光纤的色散曲线和波长。可以通过对安装到使用所述三个激光器导出的三个日期点的抛物线函数进行去除，或者基于从这三个数据点导出的两个色散值直接生成色散和波长之间的线性关系来确定分布。

7. 发明授权

US4911515A Optical fiber communications system with optical fiber monitoring 失效
标题翻译：光纤通信系统采用光纤监控
公开(公告)号：US4911515A
公开(公告)日：1990-03-27
申请号：US289297
申请日：1988-12-22
申请人： Vincent C. So , Paul J. Vella , Fred A. Huszarik
发明人： Vincent C. So , Paul J. Vella , Fred A. Huszarik
IPC分类号： G01M11/00 , G02B6/42 , H04B10/08
CPC分类号： G02B6/4204 , G01M11/3154 , H04B10/071
摘要： Optical communications fibers extend from a central office to subscribers' premises for carrying signals in both directions between optical transmitters and receivers. Each subscriber's optical receiver continuously reflects back to its fiber, and then to the central office, about 20 percent of the light which it receives. At the central office the reflected light is monitored in turn for each subscriber, and is correlated with the signal transmitted to that subscriber to provide a signal for optical time domain reflectometry of the respective subscriber's fiber connection.
摘要翻译：光通信光纤从中心局延伸到用户的房屋，用于在光发射机和接收机之间沿两个方向传送信号。每个用户的光接收器不断地反射回其光纤，然后反射到中心局，其接收的光的大约百分之二十。在中央办公室，每个用户依次监视反射光，并与发送给该用户的信号相关，以提供相应用户光纤连接的光时域反射测量信号。

8. 发明授权

US4730171A Optical signal modulators 失效
标题翻译：光信号调制器
公开(公告)号：US4730171A
公开(公告)日：1988-03-08
申请号：US856887
申请日：1986-04-28
申请人： Vincent C. So , Paul J. Vella , Richard P. Hughes
发明人： Vincent C. So , Paul J. Vella , Richard P. Hughes
IPC分类号： G02F1/01 , G02F1/313 , G02F1/34 , G02B5/14
CPC分类号： G02F1/3131 , G02F1/0115
摘要： An optical fiber having a core and a cladding has its cladding interrupted and an electro-optic crystal disposed at the interruption, a modulating electric field being applied via electrodes to the crystal to control its refractive index and thereby modulate an optical signal carried by the fiber. In one embodiment the interruption in the cladding extends all around the core. In another embodiment the fiber is embedded in a curved position in epoxy material, and the epoxy material and fiber are ground down on the outside of the curve to interrupt the cladding and expose the core, the electro-optic crystal being provided on the ground surface. A second fiber can be inverted on the crystal to provide an optical coupler. The electro-optic crystal is for example a single crystal of a tetragonal phosphate.
摘要翻译：具有芯和包层的光纤具有中断的包层，并且在中断时设置电光晶体，通过电极向晶体施加调制电场以控制其折射率，从而调制由光纤承载的光信号。在一个实施例中，包层中的中断在芯周围全部延伸。在另一个实施例中，光纤被嵌入在环氧树脂材料中的弯曲位置，并且环氧材料和纤维在曲线外侧被研磨以中断包层并露出芯，电光晶体设置在地表面上。第二光纤可以在晶体上反转以提供光耦合器。电光晶体例如是四方磷酸盐的单晶。

9. 发明授权

US4671653A Test instrument for an optical fiber 失效
标题翻译：光纤测试仪器
公开(公告)号：US4671653A
公开(公告)日：1987-06-09
申请号：US780149
申请日：1985-09-26
申请人： Vincent C. So , Richard P. Hughes , Paul J. Vella , Fred A. Huszarik , Renato Mariani
发明人： Vincent C. So , Richard P. Hughes , Paul J. Vella , Fred A. Huszarik , Renato Mariani
IPC分类号： G02B6/00 , G01M11/00 , G01M11/08 , G02B6/28 , G02B6/42 , G01N21/01
CPC分类号： G01M11/35 , G01M11/088 , G02B6/4286 , G02B6/4289
摘要： A battery powered portable test instrument for detecting whether light is propagating in an optical fiber has a jaw into which the fiber is placed, the jaw being closable to press a section of the fiber into a bend having predetermined radius of curvature. If light is propagating through the fiber it is scattered and detected in a detection circuit. If the detected light is greater than the predetermined threshold, an indicator circuit is energized.
摘要翻译：用于检测光是否在光纤中传播的电池供电的便携式测试仪器具有其中放置光纤的钳口，所述钳口可关闭以将所述纤维的一部分压入具有预定曲率半径的弯曲部。如果光线通过光纤传播，则在检测电路中被散射并检测。如果检测到的光大于预定阈值，则指示电路通电。

10. 发明授权

US4741616A Test instrument for optical fiber connectors 失效
标题翻译：光纤连接器测试仪器
公开(公告)号：US4741616A
公开(公告)日：1988-05-03
申请号：US882861
申请日：1986-07-07
申请人： Vincent C. Y. So , Paul J. Vella
发明人： Vincent C. Y. So , Paul J. Vella
IPC分类号： G01M11/00 , G01N21/88
CPC分类号： G01M11/31
摘要： Light reflected at an optical fiber connector is monitored to test the connector. Light entering an optical fiber via the connector under test is attenuated in the fiber to prevent undesired reflections.
摘要翻译：在光纤连接器处反射的光被监测以测试连接器。通过被测连接器进入光纤的光在光纤中衰减，以防止不希望的反射。

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