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    Wavelength division multiplexed optical communication system architectures
    1.
    发明授权
    Wavelength division multiplexed optical communication system architectures 有权
    波分复用光通信系统架构

    公开(公告)号：US08655190B2

    公开(公告)日：2014-02-18

    申请号：US12897788

    申请日：2010-10-05

    申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    IPC分类号： H04B10/06

    CPC分类号： H04J14/0279 ,  H04B10/5053 ,  H04B10/616 ,  H04J14/0208 ,  H04J14/0212 ,  H04J14/0224 ,  H04J14/0256 ,  H04J14/0271 ,  H04J14/0272 ,  H04J14/06

    摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

    摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

    OPTICAL TRANSMITTER SUPPLYING OPTICAL SIGNALS HAVING MULTIPLE MODULATION FORMATS
    2.
    发明申请
    OPTICAL TRANSMITTER SUPPLYING OPTICAL SIGNALS HAVING MULTIPLE MODULATION FORMATS 审中-公开
    提供多个调制格式的光信号的光传输器

    公开(公告)号：US20110229149A1

    公开(公告)日：2011-09-22

    申请号：US12728951

    申请日：2010-03-22

    申请人： STEPHEN G. GRUBB ,  David F. Welch

    发明人： STEPHEN G. GRUBB ,  David F. Welch

    IPC分类号： H04B10/04

    CPC分类号： H04B10/506 ,  H04B10/5161

    摘要： Consistent with the present disclosure, a compact transmitter is provided that can generate optical signals having different modulation formats depending on optical link requirements. Preferably, the transmitter includes a photonic integrated circuit having multiple lasers and modulators. A control circuit adjusts the drive signals supplied to the modulators such that optical signals having a desired modulation format may be output from the modulators. Thus, for example, the transmitter may be used to output optical signals having a modulation format suitable for long haul or submarine links, as well as for links having a shorter distance. Moreover, the same photonic integrated circuit may supply optical signals with different modulation formats, such that, for example, those optical signals that are dropped along a link, and thus travel a shorter distance, may have a first modulation format, while other optical signals that travel the entire length of the link may have a second modulation format that is more suited for longer distances.

    摘要翻译： 根据本公开，提供了紧凑型发射机，其可以根据光链路要求生成具有不同调制格式的光信号。 优选地，发射机包括具有多个激光器和调制器的光子集成电路。 控制电路调节提供给调制器的驱动信号，使得可以从调制器输出具有所需调制格式的光信号。 因此，例如，发射机可以用于输出具有适合于长距离或潜艇链路的调制格式的光信号，以及具有较短距离的链路。 此外，相同的光子集成电路可以提供具有不同调制格式的光信号，使得例如沿着链路落下并因此行进更短距离的那些光信号可以具有第一调制格式，而其它光信号 传播链路的整个长度的信号可以具有更适合于较长距离的第二调制格式。

    Double-clad optical fiber with improved inner cladding geometry
    6.
    发明授权
    Double-clad optical fiber with improved inner cladding geometry 失效
    双包层光纤具有改进的内包层几何形状

    公开(公告)号：US6157763A

    公开(公告)日：2000-12-05

    申请号：US050386

    申请日：1998-03-30

    申请人： Stephen G. Grubb ,  David F. Welch

    发明人： Stephen G. Grubb ,  David F. Welch

    IPC分类号： G02B6/036 ,  H01S3/067 ,  G02B6/22

    CPC分类号： G02B6/03622 ,  H01S3/06708 ,  H01S3/06729

    摘要： A double-clad optical fiber has an inner cladding with a cross-sectional shape that is non-circular, but that maintains a good end-coupling profile. The cross-sectional shape of the inner cladding is such that two perpendicular distances across the shape, each of which passes through a geometric center of a core of the fiber, are equal for all angular positions. Thus, while mode mixing within the inner cladding is enhanced, the inner cladding does not suffer any oblong distortions of its shape, and is therefore more easily coupled to conventional fibers. The cross-sectional cladding shape may include various regions along its outer surface that do not conform to a circular geometry about a center of the core. These regions may include flat regions, or concave or convex regions. The overall cross-sectional shape of the inner cladding may also be octagonal or star-shaped. In an alternative embodiment of the invention, the inner cladding may have a circular cross section, but has a torsional stress induced within it during manufacture. By rotating the fiber preform prior to curing of the inner cladding layer, a physical stress may be permanently imparted to the inner cladding which interacts with pump energy within the inner cladding layer to encourage mode mixing.

    摘要翻译： 双包层光纤具有内包层，其截面形状为非圆形，但是保持良好的端耦合曲线。 内包层的横截面形状使得跨越形状的两个垂直距离通过纤维的芯的几何中心，对于所有角度位置是相等的。 因此，当在内包层内的模式混合被增强时，内包层不会遭受其形状的任何长方形变形，因此更容易地耦合到常规的纤维。 横截面包层形状可以包括沿着其外表面的不符合围绕芯的中心的圆形几何形状的各种区域。 这些区域可以包括平坦区域或凹或凸区域。 内包层的整个横截面形状也可以是八边形或星形。 在本发明的替代实施例中，内包层可以具有圆形横截面，但在制造期间具有在其内引起的扭转应力。 通过在内包层固化之前旋转纤维预制件，物理应力可以永久地施加到与包层内的泵浦能量相互作用的内包层，以促进模式混合。

    Upsampling optical transmitter
    7.
    发明授权
    Upsampling optical transmitter 有权
    上采样光发射机

    公开(公告)号：US08831439B2

    公开(公告)日：2014-09-09

    申请号：US12897786

    申请日：2010-10-05

    申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    IPC分类号： H04B10/04

    CPC分类号： H04B10/516 ,  H04B10/2575

    摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

    摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

    WAVELENGTH DIVISION MULTIPLEXED OPTICAL COMMUNICATION SYSTEM ARCHITECTURES
    8.
    发明申请
    WAVELENGTH DIVISION MULTIPLEXED OPTICAL COMMUNICATION SYSTEM ARCHITECTURES 有权
    波长部门多路复用光通信系统架构

    公开(公告)号：US20120082460A1

    公开(公告)日：2012-04-05

    申请号：US12897788

    申请日：2010-10-05

    申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

    IPC分类号： H04J14/02

    CPC分类号： H04J14/0279 ,  H04B10/5053 ,  H04B10/616 ,  H04J14/0208 ,  H04J14/0212 ,  H04J14/0224 ,  H04J14/0256 ,  H04J14/0271 ,  H04J14/0272 ,  H04J14/06

    摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

    摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。