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8 条记录 (耗时 0.039 秒)

    Format insensitive and bit rate independent optical preprocessor
    1.
    发明授权
    Format insensitive and bit rate independent optical preprocessor 有权
    格式不敏感和比特率独立的光学预处理器

    公开(公告)号：US06727991B2

    公开(公告)日：2004-04-27

    申请号：US10195701

    申请日：2002-07-15

    申请人： Julio Martinez ,  Kwang Kim ,  Olga Nedzhvetskaya ,  Doruk Engin ,  Jiten Sarathy ,  Roman Antosik ,  Bharat Dave ,  Michael Evans ,  David Lidsky ,  Ronald Simprini ,  Boris Stefanov ,  Tan Thai

    发明人： Julio Martinez ,  Kwang Kim ,  Olga Nedzhvetskaya ,  Doruk Engin ,  Jiten Sarathy ,  Roman Antosik ,  Bharat Dave ,  Michael Evans ,  David Lidsky ,  Ronald Simprini ,  Boris Stefanov ,  Tan Thai

    IPC分类号： G01B902

    CPC分类号： H04B10/299 ,  H04L7/0075

    摘要： A method and circuit are presented for an all-optical format independent preprocessor that processes an arbitrary optical input signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. The method involves subtracting a delayed copy of the signal from the original, thereby effectively doubling its frequency, and inserting a pulse at each transition of the original signal, whether rising or falling. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The asymmetry consists of a delay element in one arm. In a preferred embodiment the entire device is fabricated on a semiconductor substrate, allowing for compactness as well as minimization of interconnectivity losses and overall power consumption. The output of the preprocessor, having a significant frequency component at its original clock rate, can then be fed to a clock recovery stage for all-optical clock recovery.

    摘要翻译： 提出了一种用于全光学格式独立预处理器的方法和电路，其通过仅将其放大来将NRZ信号转换为PRZ信号或者输入光信号是RZ来处理任意的光输入信号。 该方法包括从原始信号中减去信号的延迟副本，从而有效地使其频率加倍，并且在原始信号的每个转换处插入脉冲，无论是上升还是下降。 在优选实施例中，该阶段通过不对称干涉仪装置的每个臂中的集成SOA来实现。 不对称性由一个臂中的延迟元件组成。 在优选实施例中，整个器件制造在半导体衬底上，允许紧凑性以及最小化互连损耗和总功耗。 然后，具有其原始时钟速率的显着频率分量的预处理器的输出可以被馈送到用于全光时钟恢复的时钟恢复阶段。

    Programmable optical switch apparatus
    6.
    发明授权
    Programmable optical switch apparatus 有权
    可编程光开关装置

    公开(公告)号：US06459826B1

    公开(公告)日：2002-10-01

    申请号：US09532679

    申请日：2000-03-21

    申请人： Luc Boivin ,  Jiten Sarathy

    发明人： Luc Boivin ,  Jiten Sarathy

    IPC分类号： G02B627

    CPC分类号： H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0035

    摘要： An optical switch comprises a programmable optical polarization unit (POLCON) which receives an input optical signal and selects an output signal polarization in response to a control signal. A polarization beam splitter (PBS) splits the selected polarization signal from the POLCON into a first and second orthogonally polarized signals. A feedback circuit couples a feedback signal indicative of the optical signal strength of at least one of the orthogonally polarized signals back to the POLCON which uses it to adjust the output signal polarization. The optical switch may be used with input optical signals having fixed or varying polarizations by utilizing a single or two feedback signals, respectively. The optical switch may be used as an optical Add/Drop unit or incorporated as part of a wavelength division multiplexed (WDM) signal Add/Drop unit.

    摘要翻译： 光开关包括可编程光偏振单元（POLCON），其接收输入光信号并响应于控制信号选择输出信号极化。 偏振分束器（PBS）将所选择的偏振信号从POLCON分离成第一和第二正交极化信号。 反馈电路将表示至少一个正交极化信号的光信号强度的反馈信号耦合到使用它的POLCON以调整输出信号偏振。 光开关可以分别通过利用单个或两个反馈信号与具有固定或变化偏振的输入光信号一起使用。 光开关可以用作光放大单元，或作为波分复用（WDM）信号加/减单元的一部分。

    Wavelength selective polarization beam splitter/combiner
    7.
    发明授权
    Wavelength selective polarization beam splitter/combiner 有权
    波长选择性偏振分束器/组合器

    公开(公告)号：US06400860B1

    公开(公告)日：2002-06-04

    申请号：US09528979

    申请日：2000-03-21

    申请人： Sethumadhavan Chandrasekhar ,  Jiten Sarathy

    发明人： Sethumadhavan Chandrasekhar ,  Jiten Sarathy

    IPC分类号： G02B628

    CPC分类号： G02B6/12011 ,  G02B6/12023 ,  G02B6/122

    摘要： A wavelength selective polarization beam device uses waveguide grating routers (WGRs) having birefringent grating waveguides. When the device is used as a splitter it separates different wavelength channels of a wavelength division multiplexed (WDM) signal as well as the orthogonal polarization components of each wavelength channel. Since the WGR device is reciprocal, it can also be used as a combiner to combine the orthogonal polarization components of each wavelength channel into a WDM signal.

    摘要翻译： 波长选择偏振光束装置使用具有双折射光栅波导的波导光栅路由器（WGR）。 当该器件用作分离器时，其分离波分复用（WDM）信号的不同波长信道以及每个波长信道的正交偏振分量。 由于WGR设备是互逆的，所以它也可以用作组合器以将每个波长信道的正交偏振分量组合成WDM信号。

    Method and apparatus for testing an individual lightwave chip on a wafer
    8.
    发明授权
    Method and apparatus for testing an individual lightwave chip on a wafer 有权
    用于在晶片上测试单个光波芯片的方法和装置

    公开(公告)号：US06777252B2

    公开(公告)日：2004-08-17

    申请号：US10441330

    申请日：2003-05-20

    申请人： Jiten Sarathy

    发明人： Jiten Sarathy

    IPC分类号： H01L2166

    CPC分类号： G02B6/4214 ,  G02B6/124

    摘要： A method of efficiently testing optical chips while still on the wafer is presented. One or more gutters for each chip on the wafer is provided, and either (1) a test signal is applied to the gutter to generate a response from the chip; or (2) a test signal is applied to the chip to generate a response from the gutter, where the gutter is in optical communication with the chip, and can reflect light incident or outgoing light at substantially a ninety degree angle.

    摘要翻译： 提出了一种在晶片上仍然有效测试光学芯片的方法。 提供晶片上每个芯片的一个或多个沟槽，并且（1）将测试信号施加到沟槽以产生来自芯片的响应; 或（2）将测试信号施加到芯片以产生来自沟槽的响应，其中沟槽与芯片光学通信，并且可以以基本上90度的角度反射光入射或出射光。