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    Establishment and maintenance of optical links between optical transceiver nodes in free-space optical communications networks
    1.
    发明申请
    Establishment and maintenance of optical links between optical transceiver nodes in free-space optical communications networks 审中-公开
    建立和维护自由空间光通信网络中的光收发器节点之间的光链路

    公开(公告)号：US20050276608A1

    公开(公告)日：2005-12-15

    申请号：US11131746

    申请日：2005-05-17

    Applicant: Andrew Pavelchek

    Inventor： Andrew Pavelchek

    IPC: H04B10/10 ,  H04B10/26 ,  H04B10/00

    CPC classification number: H04B10/1125 ,  H04B10/2587

    Abstract: A system and method for establishing and maintaining optical links between optical transceiver nodes in a free space optical communications network is disclosed. The system and method provide a protocol for acquisition of an optical link between transceivers in two adjacent nodes and for re-acquisition should a node be replaced or moved. The system and method also provide a protocol for tracking small movements of one or both nodes in a link. Also, the system and method provide a protocol for recovering a link that is temporarily lost.

    Abstract translation: 公开了一种用于在自由空间光通信网络中的光收发器节点之间建立和维护光链路的系统和方法。 该系统和方法提供用于在两个相邻节点中的收发器之间获取光链路的协议，并且如果节点被替换或移动，则用于重新采集。 该系统和方法还提供用于跟踪链路中的一个或两个节点的小移动的协议。 此外，该系统和方法提供了一种用于恢复临时丢失的链路的协议。

    Fiber optic transceiver
    2.
    发明授权
    Fiber optic transceiver 有权
    光纤收发器

    公开(公告)号：US06865346B1

    公开(公告)日：2005-03-08

    申请号：US09875499

    申请日：2001-06-05

    Applicant: Gregory Miller ,  Josef Berger

    Inventor： Gregory Miller ,  Josef Berger

    IPC: H04B10/26 ,  H04B10/00

    CPC classification number: H04B10/2587

    Abstract: A fiber optic transceiver capable of bi-directional communication comprises an incoming optical (downlink) signal, a detector comprising a detecting surface configured to detect a detected portion of the incoming optical signal that strikes the detecting surface, and a light modulator for modulating a reflected (uplink) signal. The reflected signal comprises a reflected portion of the incoming signal. The light modulator comprises a controllable reflection member for modulating the reflected signal, and a controller configured to control the controllable reflection member. The controllable reflection member implements micro-electro-mechanical systems (MEMS) technology wherein micro-reflective surfaces are physically positioned or oriented by the control signal, thereby affecting reflection and diffraction in such a way as to modulate the intensity of light entering an uplink channel.

    Abstract translation: 能够进行双向通信的光纤收发器包括入射光（下行链路）信号，检测器，包括检测表面，被配置为检测被检测到的进入光信号的部分，该信号撞击检测表面;以及光调制器， （上行链路）信号。 反射信号包括输入信号的反射部分。 光调制器包括用于调制反射信号的可控反射构件和被配置为控制可控反射构件的控制器。 可控反射构件实现微机电系统（MEMS）技术，其中微反射表面被物理地定位或由控制信号定向，从而以这样的方式影响反射和衍射，以便调制进入上行链路信道的光的强度 。

    Coherent optical communication system
    3.
    发明授权
    Coherent optical communication system 失效
    相干光通信系统

    公开(公告)号：US6118565A

    公开(公告)日：2000-09-12

    申请号：US940755

    申请日：1997-09-30

    Applicant: Nicholas J. Frigo

    Inventor： Nicholas J. Frigo

    IPC: H04J14/00 ,  H04B10/20 ,  H04B10/26 ,  H04J14/02 ,  H04B10/00

    CPC classification number: H04B10/2587

    Abstract: A coherent optical system includes an optical coupler or combiner for combining a received upstream optical signal and an optical local oscillator signal. The coherent optical system further includes a coherent optical receiver which is configured to receive and process the combined optical signal from the optical coupler to retrieve upstream information from the upstream optical signal. In certain embodiments, the coherent optical communication system includes a central office having an optical source for generating a composite downstream optical signal made up of downstream optical signals of particular wavelengths (or sets of wavelengths). A downstream optical signal having a particular wavelength (or set of wavelengths) is routed to a downstream destination with a portion of the downstream optical signal (after modulation with upstream information) being returned to the central office as an upstream optical signal of the particular wavelength (or set of wavelengths) which is part of a composite upstream optical signal. At the central office, the optical coupler or combiner combines the received upstream optical signal and the optical local oscillator signal, and the coherent optical receiver processes the combined optical signal. The optical source for generating the downstream optical signals can be the same or a similar optical source for generating the local oscillator signal. Thus, the coherent optical system can alleviate the problems and costs associated with generating the local oscillator signal because the same or a similar source is readily available. Using the same or similar optical source to generate the downstream optical signals and the local oscillator system permits an increase in capacity without the additional cost of wavelength-registered and -stabilized optical sources at the subscriber locations.

    Abstract translation: 相干光学系统包括用于组合接收的上行光信号和光本地振荡器信号的光耦合器或组合器。 相干光学系统还包括相干光接收器，其被配置为从光耦合器接收并处理组合的光信号以从上游光信号中检索上游信息。 在某些实施例中，相干光通信系统包括具有用于产生由特定波长（或一组波长）的下行光信号组成的复合下行光信号的光源的中心局。 具有特定波长（或一组波长）的下行光信号被路由到具有下游光信号的一部分（在具有上行信息的调制之后）的下游目的地作为特定波长的上行光信号返回到中心局 （或一组波长），其是复合上行光信号的一部分。 在中心局，光耦合器或组合器组合接收的上行光信号和光本地振荡器信号，并且相干光接收机处理组合的光信号。 用于产生下行光信号的光源可以是相同的或用于产生本地振荡器信号的类似的光源。 因此，相干光学系统可以减轻与产生本地振荡器信号相关的问题和成本，因为相同或相似的源是容易获得的。 使用相同或相似的光源来产生下行光信号，并且本地振荡器系统允许增加容量，而不需要在用户位置处波长注册和稳定的光源的附加成本。

    High speed differential optoelectronic receiver
    4.
    发明授权
    High speed differential optoelectronic receiver 有权
    高速差分光电接收机

    公开(公告)号：US6064507A

    公开(公告)日：2000-05-16

    申请号：US206912

    申请日：1998-12-07

    Applicant: Donald G. Heflinger ,  Phillip D. Hayashida ,  Todd E. Humes ,  John D. Hyde

    Inventor： Donald G. Heflinger ,  Phillip D. Hayashida ,  Todd E. Humes ,  John D. Hyde

    IPC: H01L31/10 ,  H03F3/08 ,  H04B1/18 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/158 ,  H04B10/26 ,  H04B10/28 ,  G02B26/00

    CPC classification number: H04B10/69

    Abstract: A high speed differential optoelectronic receiver comprises a first photodetector responsive to a first incident amplitude modulated optical signal and operative to develop a first electrical signal, a second photodetector responsive to a second incident amplitude modulated optical signal that is complementary to the first optical signal and operative to develop a second electrical signal, and an amplifier having a first input that is responsive to the first electrical signal and a second input that is responsive to the second electrical signal and is operative to provide a differential output signal that is proportional to the difference between the first and the second electrical signals. Also, a method for transforming complementary amplitude modulated optical signals into a complementary electrical output signal is invented.

    Abstract translation: 高速差分光电接收器包括响应于第一入射幅度调制光信号并可操作以开发第一电信号的第一光电检测器，响应于与第一光信号互补的第二入射幅度调制光信号的第二光电检测器， 以产生第二电信号，以及放大器，其具有响应于所述第一电信号的第一输入和响应于所述第二电信号的第二输入，并且可操作地提供与所述第二电信号成比例的差分输出信号， 第一和第二电信号。 此外，发明了一种将互补幅度调制光信号变换成互补电输出信号的方法。

    Ratiometric compensated optical isolation coupler
    5.
    发明授权
    Ratiometric compensated optical isolation coupler 失效
    比例补偿光隔离耦合器

    公开(公告)号：US5949085A

    公开(公告)日：1999-09-07

    申请号：US791758

    申请日：1997-01-29

    Applicant: Donald C. Barrett

    Inventor： Donald C. Barrett

    IPC: H03K17/78 ,  H03F3/08 ,  H03K17/04 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28 ,  G02B27/00

    CPC classification number: H04B10/802

    Abstract: An improved opto-isolator circuit is disclosed. A fixed bias current is induced through a photoemitter of the opto-isolator. A fixed DC voltage is fixed across the sensor of the opto-isolator, whereby any unknown scaling factor in the opto-isolator is substantially eliminated. In a low frequency embodiment, a passive bridge is used while in a high frequency embodiment, an active bridge circuit is used.

    Abstract translation: 公开了一种改进的光隔离电路。 通过光隔离器的光电探测器感应固定的偏置电流。 固定的直流电压固定在光隔离器的传感器上，从而基本上消除了光隔离器中的任何未知的比例因子。 在低频实施例中，使用无源桥，而在高频实施例中，使用有源桥电路。

    Proximity detector with rapid reception amplification
    6.
    发明授权
    Proximity detector with rapid reception amplification 失效
    接近检测器具有快速接收放大

    公开(公告)号：US5929759A

    公开(公告)日：1999-07-27

    申请号：US985910

    申请日：1997-12-05

    Applicant: Pierre Charrier

    Inventor： Pierre Charrier

    IPC: G01V8/12 ,  H03F3/08 ,  H03K17/78 ,  H03K17/94 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28 ,  G08B13/18

    CPC classification number: H03K17/941 ,  H03F3/08

    Abstract: A proximity detector including a rapid transistor (i.e., one having a very high product gain-band) connected to a high potential voltage via a capacitor. The capacitor is connected in series to a source of a pulsed current that is a function of the proximity of an object. The capacitor is also connected to a low potential voltage via an RC circuit. The mid-point of the RC circuit is connected to the collector of a transistor connected to the high potential voltage by a collector resistor in parallel with a gain resistor of the amplifier.

    Abstract translation: 接近检测器包括通过电容器连接到高电位电压的快速晶体管（即，具有非常高的乘积增益带的）。 电容器串联连接到作为物体接近度的函数的脉冲电流源。 电容器也通过RC电路连接到低电位电压。 RC电路的中点通过与放大器的增益电阻并联的集电极电阻连接到连接到高电位电压的晶体管的集电极。

    Amplified telecommunication system for wavelength-division multiplexing transmission having an equalized reception power
    8.
    发明授权
    Amplified telecommunication system for wavelength-division multiplexing transmission having an equalized reception power 失效
    用于具有相等接收功率的波分复用传输的放大电信系统

    公开(公告)号：US5852510A

    公开(公告)日：1998-12-22

    申请号：US506086

    申请日：1995-07-24

    Applicant: Fausto Meli ,  Stefano Piciaccia

    Inventor： Fausto Meli ,  Stefano Piciaccia

    IPC: H04J14/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/12 ,  H04B10/14 ,  H04B10/17 ,  H04B10/26 ,  H04B10/28 ,  H04J14/02 ,  H01S3/00

    CPC classification number: H04B10/294 ,  H04B10/2912 ,  H04J14/0221

    Abstract: An optical telecommunication system including a transmitting station and a receiving station for optical signals, connected with each other by an optical fiber line including optical line amplifiers having a rare-earth-doped active fiber and connected in series, in which the transmitting station includes signal generator for generating signals at several wavelengths, and connections for conveying the signals to a single optical fiber line. The optical signal receiving station includes apparatus for separating the signals. At least one of the optical line amplifiers has dopants, fiber length and pumping power capable of determining, at the input of the receiving station, an optical signal/noise ratio which for the different wavelengths has a difference less than 2 dB, and for each signal is greater than 15 dB.

    Abstract translation: 一种光通信系统，包括发射站和用于光信号的接收站，通过包括具有稀土掺杂有源光纤并串联连接的光线路放大器的光纤线相互连接，其中发送站包括信号 用于产生几个波长的信号的发生器，以及用于将信号传送到单个光纤线路的连接。 光信号接收站包括用于分离信号的装置。 光线路放大器中的至少一个具有掺杂剂，光纤长度和泵送功率，其能够在接收站的输入处确定对于不同波长具有小于2dB的差异的光信号/噪声比，并且对于每个 信号大于15 dB。

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