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16 条记录 (耗时 0.014 秒)

    Providing a refractive index change in an ion diffused material
    1.
    发明授权
    Providing a refractive index change in an ion diffused material 失效
    提供离子扩散材料的折射率变化

    公开(公告)号：US06393180B1

    公开(公告)日：2002-05-21

    申请号：US09204148

    申请日：1998-12-03

    申请人： Mark Farries ,  Barrie Keyworth ,  Jan Ingenhoff ,  Norbert Fabricius

    发明人： Mark Farries ,  Barrie Keyworth ,  Jan Ingenhoff ,  Norbert Fabricius

    IPC分类号： G02B634

    CPC分类号： G02B6/1345 ,  C03C3/118 ,  C03C21/005 ,  C03C23/0025 ,  G02B6/124

    摘要： A method of forming a grating in waveguide uses an ion exchange process to provide a waveguide region within and clad by a surrounding substrate and through an ion exchange process diffusing into the substrate an ion, such as such as Ag+, that is photosensitive and that provides a refractive index difference from adjacent non-diffused regions of the substrate. After the diffusion process, the step of exposing at least some of the waveguide region to light having a suitable intensity and duration to provide a permanent index change within regions of the waveguide region to form a grating is performed.

    摘要翻译： 在波导中形成光栅的方法使用离子交换工艺来在周围的衬底内部提供波导区域并且由周围的衬底包围，并且通过离子交换工艺向衬底中扩散光敏的离子，例如Ag +，并提供 与衬底的相邻非扩散区域的折射率差。 在扩散处理之后，执行将波导区域中的至少一些暴露于具有适当强度和持续时间的光以在波导区域的区域内提供永久折射率变化以形成光栅的步骤。

    11/2.times.2 optical switch
    2.
    发明授权
    11/2.times.2 optical switch 有权
    1 + E，fra 1/2 + EE x2光开关

    公开(公告)号：US6154585A

    公开(公告)日：2000-11-28

    申请号：US334502

    申请日：1999-06-17

    申请人： Nigel Copner ,  Mark Farries ,  Adam D. Cohen ,  Rajiv Iyer

    发明人： Nigel Copner ,  Mark Farries ,  Adam D. Cohen ,  Rajiv Iyer

    IPC分类号： G02B6/35 ,  G02B26/08 ,  H04J14/02 ,  H04Q11/00 ,  G02B6/26

    CPC分类号： G02B6/3524 ,  G02B26/0891 ,  G02B6/3528 ,  H04J14/0212 ,  H04Q11/0005 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  H04J14/0206 ,  H04Q2011/0016 ,  H04Q2011/0024

    摘要： An add-drop optical circuit is provided comprising: a first multiplex/demultiplexer for demultiplexing a composite optical signal having a plurality of channels, a second multiplex/demultiplexer for multiplexing a plurality of signals into a composite optical signal; waveguides disposed between the first demultiplexer and the second multiplexer/demultiplexer; and a plurality of 11/2.times.2 optical switches coupled to at least some of the waveguides for adding and dropping optical signals, the optical switches substantially preventing optical signals from propagating from an add port to drop port.

    摘要翻译： 提供了一种分插光学电路，包括：用于解复用具有多个通道的复合光信号的第一多路复用/解复用器，用于将多个信号复用为复合光信号的第二多路复用/解复用器; 布置在第一解复用器和第二多路复用器/解复用器之间的波导; 以及耦合到至少一些波导用于增加和丢弃光信号的多个1 + E，1/2 + EE×2光开关，所述光开关基本上防止光信号从添加端口传播到丢弃端口。

    Variable-attenuation tunable optical router
    3.
    发明授权
    Variable-attenuation tunable optical router 失效
    可变衰减可调光路由器

    公开(公告)号：US5706375A

    公开(公告)日：1998-01-06

    申请号：US711978

    申请日：1996-09-10

    申请人： Stephen J. Mihailov ,  Mark Farries ,  Jinghui Li ,  Koichi Abe ,  Gary S. Duck

    发明人： Stephen J. Mihailov ,  Mark Farries ,  Jinghui Li ,  Koichi Abe ,  Gary S. Duck

    IPC分类号： G02B6/34 ,  G02F1/01 ,  H04J14/02 ,  G02B6/28

    CPC分类号： G02B6/2932 ,  G02B6/29322 ,  G02B6/29383 ,  G02B6/29395 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0213 ,  G02B6/022 ,  G02F1/011 ,  G02F1/0147 ,  G02F2201/307 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0221

    摘要： A device for distributing an optical signal has an optical waveguide with a plurality of gratings disposed in series therein, the gratings having a predetermined reflectivity response within a specific wavelength range; an optical circulator having at least three ports, one of the ports serving as an input port for receiving the optical signal, and another port for removing at least a part of the optical signal reflected from one of the gratings; and control means for individually controlling at least some of the gratings to effect a change of the wavelength range of the reflectivity response of the gratings. The change may be a shift, an expansion or a compression of the range. The device can function as a signal distributor (router), an equalizer or a demultiplexer. The reflectivity response is preferably a sloped response.

    摘要翻译： 用于分配光信号的装置具有光波导，其中多个光栅串联设置，光栅在特定波长范围内具有预定的反射率响应; 具有至少三个端口的光循环器，其中一个端口用作用于接收光信号的输入端口，以及用于去除从一个光栅反射的光信号的至少一部分的另一个端口; 以及用于分别控制至少一些光栅以实现光栅的反射率响应的波长范围变化的控制装置。 这种变化可能是一个变化，扩大或压缩的范围。 该设备可以用作信号分配器（路由器），均衡器或解复用器。 反射率响应优选为倾斜响应。

    Method and apparatus for demultiplexing high bit rate optical signals on dense wavelength grid
    4.
    发明授权
    Method and apparatus for demultiplexing high bit rate optical signals on dense wavelength grid 有权
    用于在密集波长网格上解复用高比特率光信号的方法和装置

    公开(公告)号：US07167650B2

    公开(公告)日：2007-01-23

    申请号：US09886998

    申请日：2001-06-25

    申请人： Mark Farries

    发明人： Mark Farries

    IPC分类号： H04J14/00

    CPC分类号： H04J14/02 ,  H04J14/08

    摘要： A method and an apparatus are provided to demultiplex an optical signal having a plurality of channels at a predetermined channel spacing having demultiplexing means with a frequency spacing larger than the predetermined channel spacing for receiving the optical signal and for dividing the optical signal by wavelength into a plurality of wavelength streams broader than the predetermined channel spacing, time domain demultiplexing means for receiving one of the plurality of wavelength streams and for dividing the one of the plurality of wavelength streams into a plurality of time domain demultiplexed wavelength streams, and optical filtering means for demultiplexing one of the plurality of time domain demultiplexed wavelength streams into a single channel. Advantageously, splitting means are provided to split the optical signal into sub-signals before launching them into the demultiplexing means.

    摘要翻译： 提供了一种方法和装置，用于以预定信道间隔对具有多个信道的光信号进行解复用，其中多路分离装置具有大于预定信道间隔的频率间隔，用于接收光信号，并将光信号按波长划分为 多个波长流比预定的信道间隔宽，时域解复用装置，用于接收多个波长流中的一个，并将多个波长流中的一个波长分割为多个时域解复用的波长流;以及光滤波装置， 将多个时域解复用的波长流中的一个解复用为单个信道。 有利地，提供分离装置以在将光信号发射到解复用装置之前将光信号分割成子信号。

    Method for the manufacture of a waveguide mixer
    5.
    发明授权
    Method for the manufacture of a waveguide mixer 失效
    波导混合器的制造方法

    公开(公告)号：US5127928A

    公开(公告)日：1992-07-07

    申请号：US576504

    申请日：1991-01-22

    申请人： Mark Farries ,  Luksun Li ,  Martin Fermann ,  David Payne

    发明人： Mark Farries ,  Luksun Li ,  Martin Fermann ,  David Payne

    IPC分类号： G02F1/37 ,  G02F1/383

    CPC分类号： G02F1/383

    摘要： A method is presented for writing a permanent spatially periodic phase-matching second-order non-linearity grating in an optical waveguide. Single frequency exciting radiation is launched in a pair of guided modes of the waveguide in the presence of an external DC electric field applied in a direction transverse to the waveguide. The exciting radiation may be either co-propagating or counter-propagating. The above method may be refined by performing it once for an estimated value of exciting radiation frequency, testing the waveguide to determine error in the chosen estimate, erasing the grating and re-performing the method using a corrected value for the frequency of the exciting radiation.

    摘要翻译： PCT No.PCT / GB90 / 00136 Sec。 371日期1991年1月22日 102（e）1991年1月22日PCT PCT 1990年1月31日PCT公布。 第WO90 / 08973号公报 日期：1990年8月9日。一种用于在光波导中写入永久空间周期性相位匹配二阶非线性光栅的方法。 在沿着横向于波导的方向施加的外部DC电场的存在下，在波导的一对引导模式中发射单频激励辐射。 激发的辐射可以是共传播的或反向传播的。 可以通过对激发辐射频率的估计值执行一次来改进上述方法，测试波导以确定所选择的估计中的误差，擦除光栅并且使用针对激发辐射的频率的校正值来重新执行该方法 。

    Optical drop circuit having group delay compensation
    7.
    发明授权
    Optical drop circuit having group delay compensation 失效
    具有组延迟补偿的光分路电路

    公开(公告)号：US06201907B1

    公开(公告)日：2001-03-13

    申请号：US09275961

    申请日：1999-03-25

    申请人： Mark Farries

    发明人： Mark Farries

    IPC分类号： G02B6293

    CPC分类号： G02B6/2932 ,  G02B6/29382 ,  G02B6/29394

    摘要： The present invention relates to multi-wavelength filtering devices and more particularly to a multi-channel multiplexer/demultiplexor using at least one multi-port optical circulator and a plurality of Bragg optical fiber gratings or other wavelength selective means. Advantageously a drop or add/drop optical circuit including the combination of a Bragg grating providing a strong reflective response for substantially completely separating a single channel of a band of wavelengths from a plurality of other channels in a multi-channel signal, with a Bragg grating of lower reflective response which is capable of providing group delay compensation to lessen the effects of group delay introduced by the strong Bragg grating with isolation between the Bragg gratings provides a device for accurately and efficiently separating channels from a multiple channel signal with low loss.

    摘要翻译： 多波长滤波装置技术领域本发明涉及多波长滤波装置，更具体地说，涉及使用至少一个多端口光循环器和多个布拉格光纤光栅或其它波长选择装置的多通道多路复用器/解复用器。 有利地，包括布拉格光栅的组合的放电或分插光学电路，其提供强反射响应，用于在多通道信号中基本上完全分离波长带中的单个通道与多个其它通道的单个通道，布拉格光栅 能够提供组延迟补偿以减轻由布拉格光栅之间的隔离引起的强布拉格光栅引起的群延迟的影响的较低反射响应提供了用于以低损耗精确且有效地将信道与多信道信号分离的装置。

    Hybrid optical filtering circuit
    10.
    发明授权
    Hybrid optical filtering circuit 失效
    混合光滤波电路

    公开(公告)号：US5754718A

    公开(公告)日：1998-05-19

    申请号：US701796

    申请日：1996-08-26

    申请人： Gary S. Duck ,  Yihao Cheng ,  Mark Farries

    发明人： Gary S. Duck ,  Yihao Cheng ,  Mark Farries

    IPC分类号： G02B6/34 ,  G02B6/32

    CPC分类号： G02B6/2932 ,  G02B6/2937 ,  G02B6/2938 ,  G02B6/29395 ,  G02B6/29398

    摘要： A hybrid filter includes a dichroic interference WDM filter closely coupled with a Bragg grating. Preferably the Bragg grating is housed within a sleeve having an end face that is directly coupled with an end face lens of the WDM interference filter. The entire filter can be placed within a single housing and temperature controlled. Etalon effects are lessened by placing the Bragg grating as close as possible to the WDM filter. Multiple hybrid filters of this type optically coupled to an optical circulator provided multi-channel demultiplexing.

    摘要翻译： 混合滤波器包括与布拉格光栅紧密耦合的二向干涉WDM滤波器。 优选地，布拉格光栅容纳在具有与WDM干涉滤光器的端面透镜直接耦合的端面的套筒内。 整个过滤器可以放置在单个壳体内并进行温度控制。 通过将布拉格光栅尽可能靠近WDM滤光片来减少Etalon效应。 这种类型的光耦合到光循环器的多重混合滤波器提供多通道解复用。