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    Apparatus and method for receiving a quadrature differential phase shift key modulated optical pulsetrain
    22.
    发明申请
    Apparatus and method for receiving a quadrature differential phase shift key modulated optical pulsetrain 失效
    用于接收正交差分相移键控调制光学脉冲串的装置和方法

    公开(公告)号：US20050286911A1

    公开(公告)日：2005-12-29

    申请号：US10875016

    申请日：2004-06-23

    Applicant: Christopher Doerr ,  Douglas Gill

    Inventor： Christopher Doerr ,  Douglas Gill

    IPC: H04B10/06 ,  H04B10/158

    CPC classification number: H04B10/69 ,  H04B10/677

    Abstract: An optical differential phase shift key (DPSK) receiver, a method of demodulating an optical DPSK modulated signal and an optical processor capable of operating as either a DPSK receiver or DPSK transmitter. In one embodiment, the DPSK receiver includes: (1) an optical waveguide and a delay line associated therewith configured to receive simultaneously an optical DPSK modulated signal, (2) a coupler having at least two inputs and at least four outputs, the at least two inputs configured to terminate the optical waveguide and the delay line, the delay line having a path length difference that delays the optical DPSK modulated signal by at least one timeslot relative to the optical waveguide and (3) photodetectors associated with the at least four outputs and configured to provide signals indicative of digital data contained in components of the optical DPSK modulated signal.

    Abstract translation: 光差分相移键（DPSK）接收机，解调光学DPSK调制信号的方法和能够作为DPSK接收机或DPSK发射机工作的光学处理器。 在一个实施例中，DPSK接收机包括：（1）光波导和与其相关联的延迟线，其被配置为同时接收光学DPSK调制信号，（2）具有至少两个输入和至少四个输出的耦合器，至少 两个输入被配置为终止光波导和延迟线，延迟线具有将光学DPSK调制信号相对于光波导延迟至少一个时隙的路径长度差，以及（3）与至少四个输出相关联的光电探测器 并且被配置为提供指示包含在光学DPSK调制信号的分量中的数字数据的信号。

    Method and apparatus for free-space optical switching
    23.
    发明申请
    Method and apparatus for free-space optical switching 失效
    自由空间光交换方法和装置

    公开(公告)号：US20050185878A1

    公开(公告)日：2005-08-25

    申请号：US10930382

    申请日：2004-08-31

    Applicant: Christopher Doerr ,  Dan Marom

    Inventor： Christopher Doerr ,  Dan Marom

    IPC: G02B6/34 ,  G02B6/35 ,  G02B6/12

    CPC classification number: G02B6/356 ,  G02B6/12011 ,  G02B6/12019 ,  G02B6/3546 ,  G02B6/3548 ,  G02B6/3594

    Abstract: An apparatus and method are provided for manipulating light beams propagated through PLCs in free space. Light beams propagated in through an input/output waveguide of a PLC are propagated through a waveguide array to generate a phased array output at an edge facet of the PLC. The phased array output at the edge facet is spatially Fourier transformed by a lens in free space, generating a spectrally resolved image at the back focal plane of the lens. The spectrally resolved image is reflected, at least in part, by a reflector device and coupled into a desired waveguide array of a PLC to produce a desired output.

    Abstract translation: 提供了一种用于操纵在自由空间中通过PLC传播的光束的装置和方法。 通过PLC的输入/输出波导传播的光束通过波导阵列传播，以在PLC的边缘面产生相控阵列输出。 在边缘小面处的相控阵输出在自由空间中由透镜进行空间傅立叶变换，在透镜的后焦平面处产生光谱分辨图像。 至少部分地由反射器装置反射光谱分辨的图像，并将其耦合到PLC的所需波导阵列中以产生期望的输出。

    Low-loss integrated optical coupler and optical switch
    24.
    发明授权
    Low-loss integrated optical coupler and optical switch 失效
    低损耗集成光耦合器和光开关

    公开(公告)号：US06922507B2

    公开(公告)日：2005-07-26

    申请号：US10378411

    申请日：2003-03-03

    Applicant: Christopher Doerr

    Inventor： Christopher Doerr

    IPC: G02B6/34 ,  G02F1/313 ,  G02B6/26

    CPC classification number: G02B6/29355 ,  G02F1/3132 ,  G02F2201/16

    Abstract: A low-loss integrated optical coupler includes at least three substantially similar optical couplers, adjacent ones of the optical couplers interconnected via at least one set of waveguides, each of the sets of waveguides comprising a path-length difference between the waveguides therein. In one embodiment of the present invention, the multi-section optical coupler comprises at least two arms and the path-length differences are adjustable such that signals traversing the at least two arms undergo a relative phase shift, such that a desired output power splitting ratio for the multi-section optical coupler is achieved. Alternatively, the optical coupler is implemented in an inventive optical device that functions at least, as an optical switch or an optical splitter.

    Abstract translation: 低损耗集成光耦合器包括至少三个基本上相似的光耦合器，通过至少一组波导互连的相邻光耦合器中的每一个波导组中的每一个包括其中的波导之间的路径长度差。 在本发明的一个实施例中，多段光耦合器包括至少两个臂，并且路径长度差是可调节的，使得穿过至少两个臂的信号经历相对相移，使得期望的输出功率分配比 实现了多段光耦合器。 或者，光耦合器实现在本发明的光学装置中，其至少用作光开关或光分路器。

    Optical monitor and a method for improved optical monitoring
    25.
    发明申请
    Optical monitor and a method for improved optical monitoring 有权
    光学监视器和改进光学监控的方法

    公开(公告)号：US20050053328A1

    公开(公告)日：2005-03-10

    申请号：US10657863

    申请日：2003-09-09

    Applicant: Christopher Doerr

    Inventor： Christopher Doerr

    IPC: G02B6/34 ,  H04B10/08 ,  H04J14/02 ,  G02B6/26

    CPC classification number: H04B10/07955 ,  G02B6/12021 ,  G02B6/2793 ,  G02B6/29347 ,  G02B6/29355 ,  G02B6/29395 ,  G02B6/29397 ,  H04B10/077 ,  H04J14/0227

    Abstract: The inventor proposes herein a novel optical monitor requiring only a single fiber-coupled photodetector. In one embodiment of the present invention, the optical monitor further includes an optical coupler for tapping a portion of an optical signal, a tunable filter for filtering the tapped optical signal at a predetermined frequency, and a Faraday rotator mirror for removing any polarization dependence of the tapped optical signal and for reflecting the filtered optical signal back through the tunable filter and the coupler. Subsequently, the photodetector of the optical monitor measures the power of the filtered optical signal. The optical spectrum of the optical signal is thus measured by scanning the tunable filter across the band of the optical signal and measuring the power of the optical signal as a function of the optical frequency of the tunable filter.

    Abstract translation: 发明人在此提出了仅需要单个光纤耦合光电探测器的新型光学监视器。 在本发明的一个实施例中，光学监视器还包括一个光耦合器，用于抽出一部分光信号，一个可调谐滤波器，用于以预定频率对抽头的光信号进行滤波;以及法拉第旋转镜， 经过抽头的光学信号，并将经滤波的光信号反射回可调滤波器和耦合器。 随后，光学监视器的光电检测器测量滤波后的光信号的功率。 因此，通过扫描光信号的频带上的可调谐滤波器来测量光信号的光谱，并根据可调滤波器的光频测量光信号的功率。

    Monitoring alignment between pulse carvers and phase modulators in optical systems
    26.
    发明申请
    Monitoring alignment between pulse carvers and phase modulators in optical systems 有权

    公开(公告)号：US20050046843A1

    公开(公告)日：2005-03-03

    申请号：US10647662

    申请日：2003-08-25

    Applicant: Christopher Doerr ,  Hoon Kim

    Inventor： Christopher Doerr ,  Hoon Kim

    IPC: H04B10/155 ,  G01J4/00

    CPC classification number: H04B10/505 ,  H04B10/5051

    Abstract: Timing alignment between a pulse carver (i.e., intensity modulator) and a phase modulator, e.g., in a return-to-zero (RZ) differential phase-shift keying (DPSK) optical transmitter, is monitored by filtering a signal from the transmitter and measuring the power of the filtered signal. In certain embodiments, the filter has a birefringent device (such as a polarization-maintaining fiber) and a polarizer. The polarizer may be a rotating polarizer with a rotating quarter-wave plate in front of it. In other embodiments, the filter is a periodic filter such as a Mach-Zehnder interferometer or an etalon filter. Regardless, the measured power may be used to generate control signals used to variably delay the signals that drive the phase modulator and/or the pulse carver to compensate for detected misalignment. The measured power may also be used to monitor the bit-error-rate degradation caused by timing misalignment between the pulse carver and the phase modulator.

    Optical filter or multiplexer/demultiplexer
    28.
    发明授权
    Optical filter or multiplexer/demultiplexer 有权
    光滤波器或多路复用器/解复用器

    公开(公告)号：US08938137B2

    公开(公告)日：2015-01-20

    申请号：US13637830

    申请日：2011-03-18

    Applicant: Christopher Doerr

    Inventor： Christopher Doerr

    IPC: G02B6/12 ,  G02B6/10 ,  G02B6/293

    CPC classification number: G02B6/12 ,  G02B6/10 ,  G02B6/12007 ,  G02B6/12011 ,  G02B6/29352 ,  G02B6/29398

    Abstract: An optical filter or multiplexer/demultiplexer, including a plurality of optical waveguides forming a planar structure. Each optical waveguide has a total length including one or more first segments with a first width and at least one or more second segments with a second width, the first width being larger than the second width. The sum of lengths of the one or more first segments in each optical waveguide is larger than half the total length of the waveguide.

    Abstract translation: 一种滤光器或多路复用器/解复用器，包括形成平面结构的多个光波导。 每个光波导具有包括具有第一宽度的一个或多个第一段和具有第二宽度的至少一个或多个第二段的总长度，第一宽度大于第二宽度。 每个光波导中的一个或多个第一段的长度之和大于波导的总长度的一半。

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