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249 条记录 (耗时 0.019 秒)

    Systems, methods and apparatus for bi-directional optical transceivers
    2.
    发明授权
    Systems, methods and apparatus for bi-directional optical transceivers 失效
    用于双向光收发器的系统，方法和装置

    公开(公告)号：US06954592B2

    公开(公告)日：2005-10-11

    申请号：US10165676

    申请日：2002-06-06

    申请人： Ronson Tan ,  Tat Ming Teo ,  Wenbin Jiang ,  Hsing Chung Lee

    发明人： Ronson Tan ,  Tat Ming Teo ,  Wenbin Jiang ,  Hsing Chung Lee

    IPC分类号： G02B6/42 ,  G02B27/10 ,  H04B10/24 ,  H04B10/28 ,  H04B10/00

    CPC分类号： H04B10/43 ,  G02B6/4206 ,  G02B6/4214 ,  G02B6/4246 ,  G02B27/1006 ,  G02B27/148 ,  H04B10/40

    摘要： An optical data link using a single optical fiber for bi-directional optical communication. Bi-direction optical transceivers couple to the single optical fiber having two optical channels of communication. An optical subassembly in each optical transceiver to multiplex an optical transmit signal and demultiplex an optical receive signal within the bi-direction optical transceiver. The optical subassembly includes an optical block with an optical filter to reflect at least one wavelength of light and to allow passage of another wavelength of light. Embodiments of the optical block with the optical filter are described.

    摘要翻译： 使用单个光纤进行双向光通信的光数据链路。 双向光收发器耦合到具有两个光通信通道的单个光纤。 每个光收发器中的光学子组件，用于复用光发送信号，并在双向光收发器内解复用光接收信号。 光学子组件包括具有光学滤光器的光学块，以反射至少一个波长的光并允许另一波长的光通过。 描述具有滤光器的光学块的实施例。

    Control of avalance photodiodes bias voltage
    3.
    发明申请
    Control of avalance photodiodes bias voltage 失效
    控制光电二极管的偏置电压

    公开(公告)号：US20050222814A1

    公开(公告)日：2005-10-06

    申请号：US10506920

    申请日：2003-03-11

    申请人： Peter Nicholls ,  Graham Butler

    发明人： Peter Nicholls ,  Graham Butler

    IPC分类号： H01L31/10 ,  H01L31/107 ,  H04B10/00 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/079 ,  H04B10/08 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28 ,  G06F11/30

    CPC分类号： H01L31/107 ,  H04B10/07953 ,  H04B10/0799

    摘要： An optical communications system using forward error correction (FEC) to correct errors in signals carried by the system. Optical signals on the system are dropped at nodes and converted to electrical signals by avalanche photodiodes (APDs) at the node receivers. An FEC chip operates on the electrical signal to correct errors. The error rate is used to control the APD bias voltage which affects signal noise and therefore error rate. The errors in a predetermined interval are counted and a determination made as to whether the error rate is rising with time. The bias voltage is derived from the value of a counter whose count is incremented each interval. If the error rate is rising, the counting direction is changed.

    摘要翻译： 一种使用前向纠错（FEC）来纠正由系统携带的信号中的错误的光通信系统。 系统上的光信号在节点处丢弃，并在节点接收器处由雪崩光电二极管（APD）转换为电信号。 FEC芯片对电信号进行操作以校正错误。 误差率用于控制影响信号噪声并因此影响误差率的APD偏置电压。 对预定间隔中的错误进行计数，并确定错误率是否随时间而上升。 偏置电压是从每个间隔增加计数器的值导出的。 如果错误率上升，计数方向改变。

    All-optical wavelength converter circuit
    6.
    发明申请
    All-optical wavelength converter circuit 有权
    全光波长转换电路

    公开(公告)号：US20050175354A1

    公开(公告)日：2005-08-11

    申请号：US10774308

    申请日：2004-02-06

    申请人： Amarildo Vieira ,  Mani Ramachandran ,  Arthur Paolella

    发明人： Amarildo Vieira ,  Mani Ramachandran ,  Arthur Paolella

    IPC分类号： H01S5/00 ,  H01S5/50 ,  H04B10/00 ,  H04B10/04 ,  H04B10/28

    CPC分类号： H04B10/43 ,  H01S5/005 ,  H01S5/0078 ,  H01S5/5036 ,  H01S5/509

    摘要： A method and apparatus for transferring information of an optical information-bearing signal from a first wavelength to a second wavelength. The method is implemented in an all-optical wavelength converter circuit which includes a laser diode in communication with a polarization controller. An information-bearing signal having a first wavelength is input to the circuit. A polarization controller adjusts the polarization of the information-bearing signal. The laser diode receives the polarization-adjusted information-bearing signal and generates a converted information-bearing signal by transferring the information of the polarization-adjusted information-bearing signal from the first wavelength to the second wavelength. The polarization controller receives the converted information-bearing signal from the laser diode, and polarizes the converted information-bearing signal.

    摘要翻译： 一种将光信息载体信号从第一波长传送到第二波长的信息的方法和装置。 该方法在包括与偏振控制器通信的激光二极管的全光波长转换器电路中实现。 具有第一波长的信息承载信号被输入到电路。 偏振控制器调节信息载体信号的极化。 激光二极管接收经极化调整的信息承载信号，并通过将偏振调节信息承载信号的信息从第一波长传送到第二波长来产生转换后的信息承载信号。 偏振控制器从激光二极管接收经转换的信息承载信号，并使转换的信息承载信号极化。

    Balance photo-receiver with complementary HBT common-base push pull pre-amplifier
    8.
    发明授权
    Balance photo-receiver with complementary HBT common-base push pull pre-amplifier 失效
    平衡光电接收器与互补HBT共模推挽前置放大器

    公开(公告)号：US06069534A

    公开(公告)日：2000-05-30

    申请号：US985488

    申请日：1997-12-04

    申请人： Kevin W. Kobayashi

    发明人： Kevin W. Kobayashi

    IPC分类号： H03F3/08 ,  H03F3/30 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28

    CPC分类号： H03F3/08 ,  H03F3/3076

    摘要： A balanced photoreceiver which includes one or more photodiodes coupled to an amplifier that includes a common base configured input stage which operates over a frequency band from DC to millimeter wave frequencies. In one embodiment of the invention, the amplifier is formed as a three-stage direct coupled amplifier which includes a direct coupled complementary common base configured input stage, a complementary common emitter configured Darlington pair intermediate stage and a complementary common collector configured output stage. The common collector configured output stage is used to recombine the complementary current outputs from the input and intermediate stages. The photoreceiver in accordance with the present invention provides relatively superior output waveform symmetry over an increasing power input.

    摘要翻译： 平衡光接收器，其包括耦合到放大器的一个或多个光电二极管，其包括在从DC到毫米波频率的频带上操作的公共基本配置的输入级。 在本发明的一个实施例中，放大器形成为三级直接耦合放大器，其包括直接耦合互补公共基极配置输入级，配置的达林顿对中间级和互补公共集电极配置输出级的互补公共发射极。 公共集电极配置的输出级用于重新组合来自输入和中间级的互补电流输出。 根据本发明的光接收器在增加的功率输入上提供相对较好的输出波形对称性。

    VCSEL-based multi-wavelength transmitter and receiver modules for serial and parallel optical links
    9.
    发明授权
    VCSEL-based multi-wavelength transmitter and receiver modules for serial and parallel optical links 失效
    用于串行和并行光链路的基于VCSEL的多波长发射器和接收器模块

    公开(公告)号：US5914976A

    公开(公告)日：1999-06-22

    申请号：US780767

    申请日：1997-01-08

    申请人： Vijaysekhar Jayaraman ,  David J. Welch

    发明人： Vijaysekhar Jayaraman ,  David J. Welch

    IPC分类号： H01L31/0232 ,  H01S3/0941 ,  H01S5/00 ,  H01S5/02 ,  H01S5/026 ,  H01S5/04 ,  H01S5/183 ,  H01S5/40 ,  H01S5/42 ,  H04B10/02 ,  H04B10/28 ,  H04J14/00 ,  H04J14/02 ,  H01S3/19

    CPC分类号： H01S5/0262 ,  H01S5/0215 ,  H01S5/026 ,  H01S5/041 ,  H01S5/183 ,  H01S5/18308 ,  H01S5/18361 ,  H01S5/4087 ,  H01S5/423 ,  H01S5/426

    摘要： An optoelectronic module includes one or more VCSEL transmitters and/or photodetectors coincidentally aligned along a common central longitudinal axis. Differing wavelengths of light can be received and transmitted by the optoelectronic module optically coupled to a single optical fiber or in a free-space link. The optoelectronic module is able to receive two wavelengths and transmit one wavelength, or can transmit two wavelengths in the optical link. The VCSEL transmitter can be optically pumped by a vertically integrated pump VCSEL. A parallel optical link supports transmission and reception for each duplex channel on a single optical fiber. The parallel optical link includes an array of optical fibers, a first array of optoelectronic modules optically coupled to the array of optical fibers to transmit a laser signal having a first wavelength and receive a laser signal having a second wavelength, and a second array of optoelectronic modules optically coupled to the array of optical fibers to transmit the laser signal having the second wavelength and receive the laser signal having the first wavelength. A multi-channel data distribution system enables bidirectional distribution of data between a central distribution point and a number of nodes optically linked to the central distribution point.

    摘要翻译： 光电子模块包括一个或多个VCSEL发射器和/或沿公共中心纵向轴线重合的光电探测器。 可以通过光耦合到单个光纤或自由空间链路的光电子模块来接收和传输光的不同波长。 光电子模块能够接收两个波长并传输一个波长，或者可以在光链路中传输两个波长。 VCSEL发射器可以由垂直集成的泵浦VCSEL进行光泵浦。 并行光链路支持单个光纤上的每个双工信道的发送和接收。 平行光链路包括光纤阵列，光电子模块的第一阵列光耦合到光纤阵列，以传输具有第一波长的激光信号并且接收具有第二波长的激光信号，以及第二阵列的光电子 光学耦合到光纤阵列的模块，以传输具有第二波长的激光信号并且接收具有第一波长的激光信号。 多通道数据分配系统能够在中央分配点与光中连接到中心分配点的多个节点之间实现数据的双向分配。

    Integrated optical time delay unit
    10.
    发明授权
    Integrated optical time delay unit 失效
    集成光时延单元

    公开(公告)号：US5852687A

    公开(公告)日：1998-12-22

    申请号：US890164

    申请日：1997-07-09

    申请人： Michael G. Wickham

    发明人： Michael G. Wickham

    IPC分类号： H01Q3/30 ,  G02B6/12 ,  G02B6/28 ,  H04B10/02 ,  H04B10/28

    CPC分类号： G02B6/2861 ,  G02B2006/12116 ,  G02B2006/12159

    摘要： A True Time Delay system for creating variable time delays of an optical signal suitable for use with a phased array antenna system in order to avoid beam-squint in broadband applications. The TTD is adapted to be integrated on a planar silica waveguide in order to substantially reduce the package size of the device. In one embodiment of the invention, the TTD is formed from a polarization beam splitter, a polarization rotator and a spiral waveguide. In an alternate embodiment of the invention, the TTD includes a polarization sensitive Mach Zehnder interferometer, a quarter wave polarization rotator and a spiral waveguide. In both embodiments of the invention Bragg reflective gratings are written into the spiral waveguide at different spacings to reflect optical signals of different wavelengths to create various time delays.

    摘要翻译： 一种真时延系统，用于产生适合与相控阵天线系统一起使用的光信号的可变时间延迟，以避免宽带应用中的光束偏斜。 TTD适于集成在平面二氧化硅波导上，以便大大减小装置的封装尺寸。 在本发明的一个实施例中，TTD由偏振分束器，偏振旋转器和螺旋波导形成。 在本发明的替代实施例中，TTD包括偏振敏感马赫策德尔干涉仪，四分之一波长偏振旋转器和螺旋波导。 在本发明的两个实施例中，布拉格反射光栅以不同的间隔被写入螺旋波导中以反射不同波长的光信号以产生各种时间延迟。