Linear optical sampling methods and apparatus
    12.
    发明授权
    Linear optical sampling methods and apparatus 有权
    线性光学采样方法和装置

    公开(公告)号:US07529481B1

    公开(公告)日:2009-05-05

    申请号:US10801481

    申请日:2004-03-15

    CPC classification number: G01J11/00

    Abstract: An optical data signal can be sampled by linearly combining the optical data signal with optical sampling pulses, and delivering the combination to first and second balanced detectors. The optical data signal and the optical sampling pulse are configured to have a first phase difference at the first balanced detector and a second phase difference at the second balanced detector. Typically, a difference between the first phase difference and the second phase difference is configured to be about 90 degrees. In-phase and quadrature balanced detector outputs can be combined as a sum of squares to produce a linear sampling signal representative of data signal intensity, and the sample pulses can be configured to temporally step through the optical data signal so that a sampled representation of the optical data signal is obtained.

    Abstract translation: 可通过光学数据信号与光采样脉冲线性组合来对光数据信号进行采样,并将组合传送到第一和第二平衡检测器。 光学数据信号和光学采样脉冲被配置为在第一平衡检测器处具有第一相位差并且在第二平衡检测器处具有第二相位差。 通常,第一相位差和第二相位差之间的差被配置为大约90度。 同相和正交平衡检测器输出可以组合为平方和以产生表示数据信号强度的线性采样信号,并且采样脉冲可以被配置为在时间上跨越光学数据信号,使得采样的表示 获得光数据信号。

    N×N switching arrangement of two planar arrays without waveguide crossings
    13.
    发明授权
    N×N switching arrangement of two planar arrays without waveguide crossings 有权
    不具有波导交叉的两个平面阵列的NxN切换布置

    公开(公告)号:US06859574B2

    公开(公告)日:2005-02-22

    申请号:US10115828

    申请日:2002-04-03

    CPC classification number: G02B6/32 G02B6/3546 G02B6/356

    Abstract: An N×N crossconnect switch is implemented without the use of waveguide crossings. In one embodiment, the N×N crossconnect switch uses two non-parallel planar arrays of 1×2 and 2×1 switching elements combined with a cylindrical reflector. In another embodiment, the N×N crossconnect switch includes an input planar array and output planar array implemented on a single wafer both having a refractive index n>1 separated by a central region having a refractive index n0=1.

    Abstract translation: 在不使用波导交叉的情况下实现NxN交叉连接开关。 在一个实施例中,NxN交叉连接开关使用与圆柱形反射器组合的两个非平行阵列的1x2和2x1开关元件。 在另一个实施例中,NxN交叉连接开关包括实现在单个晶片上的输入平面阵列和输出平面阵列,它们都具有由折射率n0 = 1的中心区域分开的折射率n> 1。

    Tunable thermo-optic device and method for using
    14.
    发明授权
    Tunable thermo-optic device and method for using 有权
    可调谐热电装置及其使用方法

    公开(公告)号:US06697544B2

    公开(公告)日:2004-02-24

    申请号:US09911623

    申请日:2001-07-25

    Abstract: A thermo-optic device and a method for using it are described. The device has a substrate including a pair of waveguides coupled at first and second coupling regions. At the first coupling region, an input signal is split between the two waveguides. Between the coupling regions on one of the waveguides is a demultiplexer, at least one phase shifting device, and a multiplexer. The signal portions recombine at the second coupling region. Heater strips at the first and second coupling regions alter the temperature at the first and second coupling regions, in response to applied control signals, thereby adjusting the insertion loss and dynamic range of the device. A sensor samples an output signal from the substrate and sends a signal to a controller, which controls the phase shifting devices and the heater strip to maintain the output signal within predetermined signal parameters.

    Abstract translation: 描述了一种热光器件及其使用方法。 该器件具有包括在第一和第二耦合区域耦合的一对波导的衬底。 在第一耦合区域,在两个波导之间分割输入信号。 在一个波导上的耦合区域之间是解复用器,至少一个移相装置和多路复用器。 信号部分在第二耦合区域复合。 响应于所施加的控制信号,在第一和第二耦合区域处的加热器条改变第一和第二耦合区域处的温度,从而调整装置的插入损耗和动态范围。 传感器对来自基板的输出信号进行采样,并向控制器发送信号,该控制器控制相移装置和加热器条以将输出信号保持在预定信号参数内。

    Multi-frequency optical signal source having reduced distortion and
crosstalk
    15.
    发明授权
    Multi-frequency optical signal source having reduced distortion and crosstalk 失效
    具有减少的失真和串扰的多频光信号源

    公开(公告)号:US5576881A

    公开(公告)日:1996-11-19

    申请号:US521100

    申请日:1995-08-29

    CPC classification number: H04J14/02 H04B10/2507 H04B10/85

    Abstract: A multi-frequency optical signal source is adapted to include a plurality of power splitters, each connected to obtain a portion of an electrical data signal used to modulate a different one of the plurality of input optical sources; a plurality of delay means, each connected to an output of a different power splitter, each delay means providing a different predetermined signal delay; and an electrical signal combiner having a plurality of inputs, each input connected to a different output of the respective delay means, for electrically combining a portion of the modulation signal received from the connected delay means to form a combined electrical signal at an output of the electrical signal combiner, the output of the combiner being connected to control biasing of the optical output amplifier. The resulting multi-frequency optical signal source exhibits reduced signal distortion and crosstalk by keeping the carrier density constant in its shared optical output amplifier.

    Abstract translation: 多频光信号源适于包括多个功率分配器,每个功率分配器被连接以获得用于调制多个输入光源中的不同一个的电数据信号的一部分; 多个延迟装置,每个延迟装置连接到不同功率分配器的输出,每个延迟装置提供不同的预定信号延迟; 以及具有多个输入的电信号组合器,每个输入端连接到各个延迟装置的不同输出端,用于电气地组合从所连接的延迟装置接收的调制信号的一部分,以形成在 电信号组合器,组合器的输出被连接以控制光输出放大器的偏置。 由此产生的多频光信号源通过保持其共享的光输出放大器中的载波密度恒定而呈现出降低的信号失真和串扰。

    Optical isolator using phase modulators
    16.
    发明授权
    Optical isolator using phase modulators 有权
    使用相位调制器的光隔离器

    公开(公告)号:US08768110B2

    公开(公告)日:2014-07-01

    申请号:US13151786

    申请日:2011-06-02

    Abstract: Various exemplary embodiments relate to an optical isolator in an integrated optical circuit including: a first optical modulator configured to provide a first periodic phase modulation on an input optical signal; a second optical modulator configured to provide a second periodic phase modulation on the modulated optical signal; and an optical waveguide having a length L connecting the first optical modulator to the second optical modulator; wherein the phase difference between the first and second periodic phase modulation is π/2, and wherein the length L of the optical waveguide causes a phase delay of π/2 on an optical signal traversing the optical waveguide.

    Abstract translation: 各种示例性实施例涉及集成光学电路中的光隔离器,包括:第一光调制器,被配置为对输入光信号提供第一周期性相位调制; 第二光调制器,被配置为对所述经调制的光信号提供第二周期性相位调制; 以及光波导,其具有将第一光调制器连接到第二光调制器的长度L; 其中所述第一和第二周期相位调制之间的相位差为&pgr / / 2,并且其中所述光波导的长度L在穿过所述光波导的光信号上引起相位延迟为& / 2。

    Coherent receiver having an interleave-chirped arrayed waveguide grating
    17.
    发明授权
    Coherent receiver having an interleave-chirped arrayed waveguide grating 有权
    具有交错啁啾阵列波导光栅的相干接收机

    公开(公告)号:US08275224B2

    公开(公告)日:2012-09-25

    申请号:US12541548

    申请日:2009-08-14

    Abstract: An optical coherent detector that employs an interleave-chirped arrayed waveguide grating (AWG). The AWG has a periodic chirp pattern that enables the AWG to function as an optical 90-degree hybrid. If the AWG is implemented using a birefringent material, then the AWG can also function as a polarization demultiplexer. In one embodiment, the AWG is designed to simultaneously function as a wavelength demultiplexer, a polarization demultiplexer for each wavelength-division-multiplexed (WDM) signal component, and a 90-degree hybrid for each polarization-division-multiplexed component of each WDM signal component.

    Abstract translation: 采用交错啁啾阵列波导光栅(AWG)的光学相干检测器。 AWG具有周期性的啁啾模式,使AWG能够用作光学90度混合。 如果使用双折射材料实现AWG,则AWG还可以用作偏振解复用器。 在一个实施例中,AWG被设计成同时用作波长解复用器,用于每个波分复用(WDM)信号分量的偏振解复用器,以及每个WDM信号的每个偏振分复用分量的90度混合 零件。

    MULTIMODE OPTICAL COMMUNICATION
    19.
    发明申请
    MULTIMODE OPTICAL COMMUNICATION 有权
    多模光通信

    公开(公告)号:US20110243574A1

    公开(公告)日:2011-10-06

    申请号:US12827641

    申请日:2010-06-30

    CPC classification number: G02B6/29311 G02F1/3132

    Abstract: An optical transmitter includes a set of optical waveguides and first, second, and third optical modulators. Output ends of the optical waveguides of the set form a two-dimensional array capable of end-coupling the optical waveguides of the set to a multimode optical fiber in response to the array being located to optically face one end of the multimode optical waveguide. The first optical modulator is optically connected to a first of the optical waveguides of the set, and each of the second and third optical modulators is optically connected to the second and third of the optical waveguides of the set. The set of optical waveguides is configured to provide a coupling matrix of rank three or more between the optical modulators and optical propagation modes in the multimode optical fiber.

    Abstract translation: 光发射机包括一组光波导和第一,第二和第三光调制器。 该组的光波导的输出端形成二维阵列,其能够响应于该阵列位于多模光波导的一端而将该组的光波导端接耦合至多模光纤。 第一光调制器光学地连接到该组的第一光波导中,并且第二和第三光调制器中的每一个光学连接到该组的第二和第三光波导。 该组光波导被配置为在多模光纤中提供光调制器和光传播模式之间的等级三或更多的耦合矩阵。

    Undirected cross connects based on wavelength-selective switches
    20.
    发明授权
    Undirected cross connects based on wavelength-selective switches 有权
    基于波长选择开关的无向交叉连接

    公开(公告)号:US07801156B2

    公开(公告)日:2010-09-21

    申请号:US11735112

    申请日:2007-04-13

    CPC classification number: H04L45/02 H04L45/62

    Abstract: Undirected cross connects are provided based on wavelength-selective switches A demand d={i, j} is routed over a path pd between ports i and j in a multi-layer network based on one or more wavelength selective switches, by determining a middle layer node n in the multi-network for which there is a first path pi between the port i and the middle layer node n and a second path pj between the port j and the middle layer node n; identifying a node n′, wherein the node n′ is a first node starting from port i that path pi shares with path pj; and concatenating the path pd comprised of a subpath p′i of the first path pi from the port i to the node n′ with a subpath of p′j of the second path pi from the node n′ to the port j. An undirected Cantor network is disclosed where the switch nodes are wavelength selective switches. An undirected Clos cross connect is also disclosed where one or more undirected switches are undirected Cantor networks having at least one wavelength selective switch.

    Abstract translation: 基于波长选择性交换机提供非定向交叉连接基于一个或多个波长选择性交换机,需求d = {i,j}在多层网络中的端口i和j之间的路径pd上路由,通过确定中间 在端口i和中间层节点n之间存在第一路径pi的多网络中的层节点n和端口j与中间层节点n之间的第二路径pj; 识别节点n',其中节点n'是从路径pi与路径pj共享的端口i开始的第一节点; 并且将从第一路径pi的从第一路径pi的子路径p'i组成的路径pd从端口i连接到节点n',其中第二路径pi的p_j的子路径从节点n'到端口j。 公开了一种无向Cantor网络,其中交换节点是波长选择性交换机。 还公开了一种无向Clos交叉连接,其中一个或多个无向开关是具有至少一个波长选择开关的无向Cantor网络。

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