公开(公告)号：US07193778B2

公开(公告)日：2007-03-20

申请号：US10913360

申请日：2004-08-09

申请人： Simon Xiaofan Cao ,  Masataka Shirasaki

发明人： Simon Xiaofan Cao ,  Masataka Shirasaki

IPC分类号： G02B27/00

CPC分类号： G02B27/148 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/29358 ,  G02B6/29361 ,  G02B6/29392 ,  G02B6/29394 ,  G02B6/29395 ,  G02B27/0087 ,  G02B27/1006 ,  G02B27/106 ,  G02B27/1073 ,  G02B27/1086 ,  G02B27/126 ,  G02B27/144 ,  G02B27/145 ,  G02B27/147 ,  H04B10/25133

摘要： Various configurations of a virtually imaged phased array (VIPA) generator in combination with a mirror to compensate for chromatic dispersion. A VIPA generator produces a light traveling from the VIPA generator. In some embodiments, a variable curvature mirror is positioned to reflect the light back to the VIPA generator. A rotation axis around which the mirror is rotated and a translation path for the rotation axis are provided, to change the curvature of the mirror where the output light is reflected. In other embodiments, a plurality of mirrors have different surface curvatures. A holder has a rotation axis and holds the plurality of mirrors equidistantly from the rotation axis. The holder is rotatable around the rotation axis to bring a different, respective mirror in position to reflect light produced by a VIPA generator back to the VIPA generator. In other embodiments, a rotating mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror. In still other embodiments, an off-axis parabolic mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror.

摘要翻译： 虚拟成像的相控阵（VIPA）发生器与反射镜组合以补偿色散的各种配置。 VIPA发电机产生从VIPA发电机运行的光。 在一些实施例中，可变曲率镜被定位成将光反射回VIPA发生器。 提供反射镜绕其旋转的旋转轴线和用于旋转轴线的平移路径，以改变反射镜的输出光反射的曲率。 在其他实施例中，多个反射镜具有不同的表面曲率。 保持器具有旋转轴线并且将多个反射镜从旋转轴线等距离地保持。 保持器可围绕旋转轴线旋转以使不同的相应反射镜处于适当位置，以将由VIPA发生器产生的光反射回VIPA发生器。 在其他实施例中，旋转镜可围绕旋转轴线旋转，以将由VIPA发生器产生的光反射到相应的固定镜。 在另外的其它实施例中，离轴抛物面镜可围绕旋转轴线旋转，以将由VIPA发生器产生的光反射到相应的固定镜。

公开(公告)号：US07016610B2

公开(公告)日：2006-03-21

申请号：US10799050

申请日：2004-03-12

申请人： Guohua Xiao ,  Xiaoping Mao ,  Lintao Zhang ,  Xiaofan Cao

发明人： Guohua Xiao ,  Xiaoping Mao ,  Lintao Zhang ,  Xiaofan Cao

IPC分类号： H04B10/08 ,  H04J14/02

CPC分类号： G02B6/29362 ,  G02B6/266 ,  G02B6/29383 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0221 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0092

摘要： A self-adjusting optical add-drop multiplexer monitors the power in a drop signal and attenuates the power in an add signal to match the power in express WDM channels (signals). When used in a fiber network, and more particularly, in a metro network, the deleterious effects of optical amplification are reduced. Power attenuation is also used in an optical switching assembly particularly useful in two-fiber ring network. The optical switching assembly monitors drop channels from the two rings of the network and attenuates the add channel(s) accordingly. An optical switch operates to direct the drop signal from one of the two rings to a receiver in accordance with a control signal based on the monitored drop channels. The self-adjusting optical add-drop multiplexer also monitors the power in the drop signals and issues an alarm if the drop signal is of a power level above or below predetermined levels.

公开(公告)号：US06885821B2

公开(公告)日：2005-04-26

申请号：US09794368

申请日：2001-02-27

申请人： Thomas F. Cooney ,  Simon Xiaofan Cao

发明人： Thomas F. Cooney ,  Simon Xiaofan Cao

IPC分类号： H04B10/24 ,  H04J14/02 ,  H04J14/06 ,  H04J14/00

CPC分类号： H04J14/0283 ,  H04B10/2503 ,  H04J14/0208 ,  H04J14/0212 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0286 ,  H04J14/06

摘要： The present invention provides an improved full-duplex optical communications system. The system includes: at least one office, where the at least one office provides a plurality of channels, the plurality of channels comprising a plurality of signal channels and a plurality of continuous wave (CW) channels; at least one optical add/drop multiplexer (OADM) optically coupled to the at least one office; and a subscriber premises optically coupled to the at least one OADM, where at least one of the plurality of signal channels and at least one of the plurality of CW channels are dropped from the plurality of channels to the subscriber premises by the at least one OADM, where the subscriber premises modulates the dropped at least one of the plurality of CW channels, where the modulated at least one of the plurality of CW channels is added to the plurality of channels by the at least one OADM.

摘要翻译： 本发明提供一种改进的全双工光通信系统。 所述系统包括：至少一个办公室，其中所述至少一个办公室提供多个通道，所述多个通道包括多个信号通道和多个连续波（CW）通道; 至少一个光学分插复用器（OADM），光耦合到所述至少一个办公室; 以及光学耦合到所述至少一个OADM的用户场所，其中所述多个信道和所述多个CW信道中的至少一个信道从所述多个信道被所述至少一个OADM从所述多个信道丢弃到所述用户驻地 ，其中所述用户驻地调制所述多个CW信道中的所述丢弃的至少一个CW信道，其中所述多个CW信道中的至少一个被调制的所述至少一个CW信道被所述至少一个OADM添加到所述多个信道。

公开(公告)号：US06490386B1

公开(公告)日：2002-12-03

申请号：US09773224

申请日：2001-01-31

申请人： Xiaofan Cao ,  Thomas F. Cooney

发明人： Xiaofan Cao ,  Thomas F. Cooney

IPC分类号： G02B628

CPC分类号： G02B6/29386 ,  G02B6/2713 ,  G02B6/276 ,  G02B6/29302 ,  G02B6/29347 ,  G02B6/29349 ,  G02B6/29358

摘要： A bi-directional amplifier system comprises a 2×2 interleaved channel separator optically coupled to both a first and a second bi-directional fiber optic communications line and an optical amplifier optically coupled to the 2×2 interleaved channel separator. A method of bi-directional optical amplification comprises the steps of: (a) inputting a first plurality of optical channels from a first optical communications line to and a second plurality of optical channels from a second optical communications line to first port and a second port, respectively, of a 2×2 interleaved channel separator; (b) outputting the first plurality and the second plurality of optical channels from a third port of the interleaved channel separator to the input of an optical amplifier; (c) outputting the first plurality and the second plurality of optical channels from the output of the optical amplifier to a fourth port of the interleaved channel separator; and (d) outputting the first plurality of optical channels to the second fiber optic communications line and the second plurality of optical channels to the first fiber optic communication s line from the interleaved channel separator.

摘要翻译： 双向放大器系统包括光耦合到第一和第二双向光纤通信线路的光学耦合到2x2交织信道分离器的光学耦合器的2×2交织信道分离器。 一种双向光放大的方法包括以下步骤：（a）将第一多个光通道从第一光通信线路和第二多个光通道从第二光通信线路输入到第一端口和第二端口 分别为2x2交错通道分离器; （b）将第一多个和第二个多个光通道从交错通道分离器的第三端口输出到光放大器的输入端; （c）将第一多个光信道和第二多个光信道从光放大器的输出端输出到交错信道分离器的第四端口; 以及（d）将所述第一多个光通道从所述交织的信道分离器输出到所述第二光纤通信线路和所述第二多个光学信道到所述第一光纤通信线路。

公开(公告)号：US06417964B1

公开(公告)日：2002-07-09

申请号：US09777162

申请日：2001-02-05

申请人： Lintao Zhang ,  Charles Mao ,  Xiaofan Cao ,  Guohua Xiao

发明人： Lintao Zhang ,  Charles Mao ,  Xiaofan Cao ,  Guohua Xiao

IPC分类号： H04B1012

CPC分类号： H04B10/2931

摘要： A reconfigurable AGC loop design for an optical amplifier with a software provisional switch in the AGC loop inside the optical amplifier is disclosed. On the input side, there is a 1×m switch for switching a first input to the input of an optical amplifier, or to route other external pins to the optical amplifier. On the output side, there is a 1×n switch for switching a first output to the output of an optical amplifier, or to route other external pins to the optical amplifier. The AGC loop inside an optical amplifier is available to operate with other external signals. This reconfigurability unleashes the AGC loop capability that is traditionally confined to individual optical amplifier, provides flexibility, and greatly simplifies the design of optical node.

摘要翻译： 公开了一种用于具有在光放大器内的AGC环路中的软件临时开关的光放大器的可重构AGC环路设计。 在输入端，有一个1xm开关，用于将第一个输入切换到光放大器的输入端，或将其他外部引脚连接到光放大器。 在输出端，有一个1xn开关，用于将第一个输出切换到光放大器的输出，或将其他外部引脚连接到光放大器。 光放大器内的AGC环路可用于与其他外部信号一起工作。 这种可重新配置释放了传统上限于单个光放大器的AGC环路功能，提供了灵活性，并大大简化了光节点的设计。

公开(公告)号：US5933260A

公开(公告)日：1999-08-03

申请号：US846027

申请日：1997-04-25

申请人： Xiaofan Cao ,  Yu Zheng

发明人： Xiaofan Cao ,  Yu Zheng

IPC分类号： G02B6/34 ,  H04J14/02

CPC分类号： G02B6/29362 ,  G02B6/2938 ,  H04J14/02

摘要： A system and method for separating a component signal having a predetermined wavelength from a signal carried over a range of wavelengths is disclosed. The system comprises a first filter for transmitting light of the predetermined wavelength. The component signal is reflected rather than transmitted. The system further comprises a second filter for transmitting light of a second predetermined wavelength. The second filter is in the transmission direction from the first filter. Thus, the component signal is separated by transmission by the first filter and reflection from the second filter.

摘要翻译： 公开了一种用于从具有波长范围的信号中分离具有预定波长的分量信号的系统和方法。 该系统包括用于透射预定波长的光的第一滤光器。 分量信号被反射而不是传输。 该系统还包括用于透射第二预定波长的光的第二滤光器。 第二过滤器处于来自第一过滤器的传送方向。 因此，分量信号由第一滤波器的传输和来自第二滤波器的反射分离。

公开(公告)号：US06786611B2

公开(公告)日：2004-09-07

申请号：US10252389

申请日：2002-09-24

申请人： Simon Xiaofan Cao ,  Masataka Shirasaki

发明人： Simon Xiaofan Cao ,  Masataka Shirasaki

IPC分类号： G02B510

CPC分类号： G02B27/148 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/29358 ,  G02B6/29361 ,  G02B6/29392 ,  G02B6/29394 ,  G02B6/29395 ,  G02B27/0087 ,  G02B27/1006 ,  G02B27/106 ,  G02B27/1073 ,  G02B27/1086 ,  G02B27/126 ,  G02B27/144 ,  G02B27/145 ,  G02B27/147 ,  H04B10/25133

摘要： Various configurations of a virtually imaged phased array (VIPA) generator in combination with a mirror to compensate for chromatic dispersion. A VIPA generator produces a light traveling from the VIPA generator. In some embodiments, a variable curvature mirror is positioned to reflect the light back to the VIPA generator. A rotation axis around which the mirror is rotated and a translation path for the rotation axis are provided, to change the curvature of the mirror where the output light is reflected. In other embodiments, a plurality of mirrors have different surface curvatures. A holder has a rotation axis and holds the plurality of mirrors equidistantly from the rotation axis. The holder is rotatable around the rotation axis to bring a different, respective mirror in position to reflect light produced by a VIPA generator back to the VIPA generator. In other embodiments, a rotating mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror. In still other embodiments, an off-axis parabolic mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror.

摘要翻译： 虚拟成像的相控阵（VIPA）发生器与反射镜组合以补偿色散的各种配置。 VIPA发电机产生从VIPA发电机运行的光。 在一些实施例中，可变曲率镜被定位成将光反射回VIPA发生器。 提供反射镜绕其旋转的旋转轴线和用于旋转轴线的平移路径，以改变反射镜的输出光反射的曲率。 在其他实施例中，多个反射镜具有不同的表面曲率。 保持器具有旋转轴线并且将多个反射镜从旋转轴线等距离地保持。 保持器可围绕旋转轴线旋转以使不同的相应反射镜处于适当位置，以将由VIPA发生器产生的光反射回VIPA发生器。 在其他实施例中，旋转镜可围绕旋转轴线旋转，以将由VIPA发生器产生的光反射到相应的固定镜。 在另外的其它实施例中，离轴抛物面镜可围绕旋转轴线旋转，以将由VIPA发生器产生的光反射到相应的固定镜。

公开(公告)号：US06661953B2

公开(公告)日：2003-12-09

申请号：US09894069

申请日：2001-06-28

申请人： Simon Xiaofan Cao

发明人： Simon Xiaofan Cao

IPC分类号： G02B634

CPC分类号： G02B6/4215 ,  G02B6/272 ,  G02B6/2793 ,  G02B6/2931 ,  G02B6/29313 ,  G02B6/2938

摘要： An integrated multifunctional apparatus for fiber optic communication systems includes: at least one input fiber; a lens optically coupled to the at least one input fiber; a diffraction grating optically coupled to the lens at a side opposite to the at least one input fiber; at least one output fiber optically coupled to the lens at the side opposite to the diffraction grating; and a plurality of movable rods residing at the side of the lens opposite to the diffraction grating, where the plurality of movable rods is capable of intercepting a variable portion of a light traversing through the lens. The apparatus is capable of simultaneously performing the functions of multiplexing or de-multiplexing, variable optical attenuation and/or optical detection of plural channels comprising a wavelength division multiplexed composite optical signal.

公开(公告)号：US06481861B2

公开(公告)日：2002-11-19

申请号：US10021086

申请日：2001-12-19

申请人： Simon Xiaofan Cao ,  Masataka Shirasaki

发明人： Simon Xiaofan Cao ,  Masataka Shirasaki

IPC分类号： G02B510

CPC分类号： G02B27/148 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/29358 ,  G02B6/29361 ,  G02B6/29392 ,  G02B6/29394 ,  G02B6/29395 ,  G02B27/0087 ,  G02B27/1006 ,  G02B27/106 ,  G02B27/1073 ,  G02B27/1086 ,  G02B27/126 ,  G02B27/144 ,  G02B27/145 ,  G02B27/147 ,  H04B10/25133

摘要： Various configurations of a virtually imaged phased array (VIPA) generator in combination with a mirror to compensate for chromatic dispersion. A VIPA generator produces a light traveling from the VIPA generator. In some embodiments, a variable curvature mirror is positioned to reflect the light back to the VIPA generator. A rotation axis around which the mirror is rotated and a translation path for the rotation axis are provided, to change the curvature of the mirror where the output light is reflected. In other embodiments, a plurality of mirrors have different surface curvatures. A holder has a rotation axis and holds the plurality of mirrors equidistantly from the rotation axis. The holder is rotatable around the rotation axis to bring a different, respective mirror in position to reflect light produced by a VIPA generator back to the VIPA generator. In other embodiments, a rotating mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror. In still other embodiments, an off-axis parabolic mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror.

公开(公告)号：US6088142A

公开(公告)日：2000-07-11

申请号：US816089

申请日：1997-03-13

申请人： Xiaofan Cao ,  Yu Zheng

发明人： Xiaofan Cao ,  Yu Zheng

IPC分类号： G01J9/00 ,  H04B10/155 ,  H04B10/04

CPC分类号： G01J9/00 ,  H04B10/506 ,  H04B10/572

摘要： A system and method for monitoring a wavelength of light produced by a light source is disclosed. The system and method comprise a diffractor for diffracting the light. A first portion of the light is transmitted without diffraction and has a propagation direction. A second portion of the light has a predetermined wavelength and is diffracted through a predetermined angle from the propagation direction. The system also comprises a plurality of filters at the predetermined angle from the propagation direction from the diffractor. The filters transmit light of the predetermined wavelength. The system also comprises a plurality of photodiodes. Each photodiode provides a signal corresponding to an intensity of light and corresponds to a one of the plurality of filters. Each photodiode is placed behind a corresponding filter. According to the system and method disclosed, the system and method monitor the wavelength without significant interruption of the beam. The system and method are also compact, low in cost and require very little alignment. Consequently, overall system performance is increased.

摘要翻译： 公开了一种用于监测由光源产生的光的波长的系统和方法。 该系统和方法包括用于衍射光的衍射器。 光的第一部分没有衍射而传播并具有传播方向。 光的第二部分具有预定的波长，并且从传播方向衍射出预定的角度。 该系统还包括从衍射器的传播方向预定角度的多个滤光器。 滤光器透射预定波长的光。 该系统还包括多个光电二极管。 每个光电二极管提供对应于光强度的信号，并对应于多个滤光器之一。 每个光电二极管放置在相应的过滤器后面。 根据所公开的系统和方法，系统和方法监测波长，而不会明显地中断波束。 该系统和方法也紧凑，成本低，需要很小的对准。 因此，整体系统性能提高。