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1. 发明申请

WO2003009054A2 FIBER OPTICAL GAIN EQUALIZER 审中-公开
标题翻译：光纤增益均衡器
公开(公告)号：WO2003009054A2
公开(公告)日：2003-01-30
申请号：PCT/IL2002/000167
申请日：2002-03-04
申请人： XTELLUS INC. , COREM, Yossi , SUH, Seongwoo , COHEN, Gil
发明人： COREM, Yossi , SUH, Seongwoo , COHEN, Gil
IPC分类号： G02F1/01
CPC分类号： G02F1/216 , H01S3/06754 , H01S2301/04
摘要： A fiber optical device, whose wavelength profile can be dynamically controlled in real time by the application of control voltages. The device can be used as a fiber optical gain equalizer or a wavelength selective filtering device which is compact, polarization insensitive, and of low manufacturing costs. The device comprises a stepped transparent substrate, through which the input beam is passed. Within the optical paths of the stepped regions of the substrate, electronically variable phase shifting elements are located, each operative to change the phase of the light passing through its associated step, and thus effectively adding tunability to the height of each step. Planar liquid crystal elements may be used as these elements. The elements may be pixelated, each pixel preferably affecting the phase of the light passing through a fraction of the area of the associated step, such that the interference so can be used to vary the transmission through that step. The pixels thus effectively add tunability to the area of each step. Electronic control of the height and area of each step enables the generation and dynamic control of complex transmission profiles.
摘要翻译：一种光纤光学器件，其波长分布可通过施加控制电压实时动态控制。该器件可以用作光纤增益均衡器或波长选择滤波器件，其具有紧凑，极化不灵敏和低制造成本。该装置包括阶梯式透明基板，输入光束通过该基板通过。在基板的台阶区域的光路内，定位电子可变相移元件，每个元件可操作以改变通过其相关步骤的光的相位，从而有效地将可调性增加到每个台阶的高度。平面液晶元件可以用作这些元件。元件可以是像素化的，每个像素优选地影响通过相关步骤的区域的一部分的光的相位，使得干涉可以用于改变通过该步骤的透射。因此像素有效地增加了每个步骤区域的可调性。电子控制每个步骤的高度和面积使得能够生成和动态控制复杂的传输轮廓。

2. 发明申请

WO2003009054A3 FIBER OPTICAL GAIN EQUALIZER 审中-公开
公开(公告)号：WO2003009054A3
公开(公告)日：2003-01-30
申请号：PCT/IL2002/000167
申请日：2002-03-04
申请人： XTELLUS INC. , COREM, Yossi , SUH, Seongwoo , COHEN, Gil
发明人： COREM, Yossi , SUH, Seongwoo , COHEN, Gil
IPC分类号： G02F1/01
摘要： A fiber optical device, whose wavelength profile can be dynamically controlled in real time by the application of control voltages. The device can be used as a fiber optical gain equalizer or a wavelength selective filtering device which is compact, polarization insensitive, and of low manufacturing costs. The device comprises a stepped transparent substrate (10), through which the input beam is passed. Within the optical paths of the stepped regions (14) of the substrate, electronically variable phase shifting elements (20) are located, each operative to change the phase of the light passing through its associated step, and thus effectively adding tunability to the height of each step. Planar liquid crystal elements may be used as these elements. The elements may be pixelated (26, 28), each pixel preferably affecting the phase of the light passing through a fraction of the area of the associated step, such that the interference so can be used to vary the transmission through that step. The pixels thus effectively add tunability to the area of each step. Electronic control of the height and area of each step enables the generation and dynamic control of complex transmission profiles.

3. 发明申请

WO2002071660A2 DYNAMIC GAIN EQUALIZER 审中-公开
标题翻译：动态增益均衡器
公开(公告)号：WO2002071660A2
公开(公告)日：2002-09-12
申请号：PCT/IL2002/000187
申请日：2002-03-08
申请人： XTELLUS INC. , COHEN, Gil , SUH, Seongwoo , COREM, Yossi
发明人： COHEN, Gil , SUH, Seongwoo , COREM, Yossi
IPC分类号： H04B10/17
CPC分类号： G02F1/1326 , G02B6/266 , G02F1/0115 , G02F1/134309 , G02F1/1396 , G02F1/2955 , G02F2201/04 , G02F2201/17 , G02F2203/48
摘要： A gain equalizer in which a multichannel input light signal is split into its separate wavelength components by means of a dispersive element such as a grating, and the spatially separated wavelength components are passed through a linear array of variable optical attenuators based on liquid crystal phase elements which modulate the phase of part of the cross section of the light. Other types of variable attenuators may also be used. The separate attenuated wavelength components are then recombined and output. The attenuation level of each variable optical attenuator is adjusted according to the output of the light as a function of its wavelength components, and in this way, the overall wavelength profile of the output light signal can be adjusted to any predefined form, whether a flattened spectral profile as in gain equalization applications, or a spectral compensating profile or a band blocking profile.
摘要翻译：一种增益均衡器，其中通过诸如光栅的色散元件将多通道输入光信号分离成其分离的波长分量，并且空间分离的波长分量通过基于液晶相元件的可变光衰减器的线性阵列其调制光的横截面的一部分的相位。也可以使用其他类型的可变衰减器。然后将单独的衰减波长分量重新组合并输出。根据作为其波长分量的函数的光的输出来调整每个可变光衰减器的衰减水平，并且以这种方式，可以将输出光信号的总体波长分布调整为任何预定义的形式，无论是扁平化光谱分布如增益均衡应用，或光谱补偿曲线或带阻挡曲线。

4. 发明申请

WO2007029260A3 OPTICAL WAVELENGTH SELECTIVE ROUTER 审中-公开
公开(公告)号：WO2007029260A3
公开(公告)日：2007-03-15
申请号：PCT/IL2006/001052
申请日：2006-09-10
申请人： XTELLUS INC. , COHEN, Gil , SUH, SeongWoo , COREM, Yossi
发明人： COHEN, Gil , SUH, SeongWoo , COREM, Yossi
IPC分类号： G02B6/26 , G02B6/28 , H04J14/00
摘要： A fiber-optical, wavelength selective switch, especially for channel routing with equalization and blocking applications. The input signals are converted to light beams having predefined polarizations (41). The beams are then laterally expanded (43), and then undergo spatial dispersion in the beam expansion plane. The different wavelength components are directed through a polarization rotation device, pixilated along the wavelength dispersion direction such that each pixel operates on a separate wavelength. Each beam is passed into a pixilated beam steering array (48), for directing each wavelength to a desired output port. The beam steering devices can be MEMS-based or Liquid crystal-based, or an LCOS array. When the appropriate voltage is applied to a pixel and its associated beam steering element, the polarization of the light passing through the pixel is rotated and the beam steered to couple to the selected output port.

5. 发明申请

WO2006106523A2 MULTI-CHANNEL CHROMATIC DISPERSION COMPENSATOR 审中-公开
标题翻译：多通道色散补偿器
公开(公告)号：WO2006106523A2
公开(公告)日：2006-10-12
申请号：PCT/IL2006/000446
申请日：2006-04-07
申请人： XTELLUS INC. , COREM, Yossi , SUH, SeongWoo , COHEN, Gil
发明人： COREM, Yossi , SUH, SeongWoo , COHEN, Gil
IPC分类号： G06T15/00
CPC分类号： G02B6/29394 , G02B6/2931 , G02F1/1326 , G02F2201/30 , G02F2203/26 , G02F2203/50 , H01S3/0057
摘要： A multi-wavelength device to compensate for chromatic dispersion in an optical transmission by inducing a phase shift which varies quadratically as a function of the different frequencies within the transmission. The quadratic phase variation can be applied by dispersing the input optical signal such that different wavelength components are spatially spread, and disposing an array of phase shifting elements along the dispersion direction, such that different wavelengths pass through different phase shifting elements. The elements are actuated to provide a phase shift which varies at least partially quadratically along the dispersion axis, and thus generates at least a partially quadratic phase variation to the wavelength components. This compensates for a phase shift having a quadratic dependence on frequency, generated as a result of the chromatic dispersion. The device is tunable, such that changes in chromatic dispersion can be compensated for dynamically.
摘要翻译：一种多波长器件，用于通过引起根据变速器内的不同频率的函数二次变化的相移来补偿光学传输中的色散。可以通过分散输入光信号使得不同波长分量在空间上扩展并沿着色散方向设置相移元件阵列，使得不同波长通过不同的相移元件来应用二次相位变化。这些元件被致动以提供沿着色散轴线至少部分地二次变化的相移，从而对波长分量产生至少一部分二次相位变化。这补偿了作为色散的结果产生的对频率具有二次相关性的相移。该装置是可调谐的，使得可以动态地补偿色散的变化。

6. 发明申请

WO2003032071A1 WAVELENGTH SELECTIVE OPTICAL SWITCH 审中-公开
标题翻译：波长选择光开关
公开(公告)号：WO2003032071A1
公开(公告)日：2003-04-17
申请号：PCT/IL2002/000511
申请日：2002-06-25
申请人： XTELLUS INC. , COHEN, Gil , SILBERBERG, Yaron , COREM, Yossi
发明人： COHEN, Gil , SILBERBERG, Yaron , COREM, Yossi
IPC分类号： G02F1/31
CPC分类号： H04Q11/0005 , G02B6/272 , G02B6/2766 , G02B6/2931 , G02B6/29311 , G02B6/29313 , G02B6/2938 , G02B6/29395 , G02F1/1326 , G02F1/31 , G02F2203/05 , H04Q2011/0024 , H04Q2011/0035
摘要： A wavelength selective switch, in which an input optical signal is wavelength-dispersed and polarization-split in two angularly oriented planes. A polarization rotation device, such as a liquid crystal polarization modulator, pixelated along the wavelength dispersive direction such that each pixel operates on a separate wavelength channel, rotates the polarization of the light signal passing through the pixel, according to the control voltage applied to that pixel. The polarization modulated signals are then wavelength-recombined and polarization-recombined by means of similar dispersion and polarization combining components as were used to respectively disperse and split the input signals. The direction of the output signal is determined by whether the polarization of a particular wavelength channel was rotated by the polarization modulator pixel, or not. In this way, a fast, wavelength dependent, optical switch is provided, capable of use in WDM switching applications.
摘要翻译：波长选择开关，其中输入光信号被波长分散并且在两个角度定向的平面中被偏振分割。沿着波长色散方向像素化的偏振旋转装置，使得每个像素在单独的波长通道上工作，根据施加到该像素的控制电压来旋转通过像素的光信号的偏振。像素。然后通过类似的色散和偏振组合组件对偏振调制信号进行波长复合和极化复合，如分别分散和分割输入信号。输出信号的方向由特定波长信道的偏振是否被偏振调制器像素旋转确定。以这种方式，提供了一种快速，依赖于波长的光开关，能够在WDM开关应用中使用。

7. 发明申请

WO2010146589A1 MULTIPLE PORT WAVELENGTH SELECTABLE ROUTER 审中-公开
标题翻译：多端口波长选择路由器
公开(公告)号：WO2010146589A1
公开(公告)日：2010-12-23
申请号：PCT/IL2010/000479
申请日：2010-06-17
申请人： OCLARO (NEW JERSEY) INC , SUH, Seong, Woo , COHEN, Gil , COREM, Yossi
发明人： SUH, Seong, Woo , COHEN, Gil , COREM, Yossi
IPC分类号： G02B6/26 , G02B6/42
CPC分类号： G02B6/356 , G02B6/3512 , G02B6/3548 , G02B6/3556 , G02B6/3558 , G02B6/3594
摘要： A multi-port Wavelength Selective Switch (WSS), having a beam steering array to switch input light from one port into any one of a stack of output ports, but with the switch functionality doubled by using a polarization switching architecture which can deflect any of the switched beams in a plane perpendicular to the beam steering plane used by the WSS array. By this means, the port count is doubled, by having two stacks of ports disposed side by side in the switch. The beams are deflected to the desired port level in either of the stacks by means of a beam steering assembly, such as a one-dimensional MEMS array, and at the same time, any beam deflected to any of the port levels can be directed to either of the stacks by means of polarization switching components operative to divert the beams laterally between the two stacks.
摘要翻译：一种多端口波长选择开关（WSS），具有波束导向阵列，用于将来自一个端口的输入光切换到输出端口的任意一个，但是通过使用偏振切换架构使开关功能加倍，可以使任何在与WSS阵列使用的光束操纵平面垂直的平面内的切换光束。通过这种方式，通过在交换机中并排设置两个端口堆叠端口数量加倍。光束通过诸如一维MEMS阵列的光束转向组件而偏转到任何一个堆叠中的期望的端口电平，并且同时偏转到任何端口电平的任何光束可以被引导到通过极化切换部件的两个堆叠中的任一个可操作以在两个堆叠之间横向移动梁。

8. 发明申请

WO2012012586A1 WSS WITH PIXEL GAP COMPENSATION 审中-公开
标题翻译： WSS与像素差距补偿
公开(公告)号：WO2012012586A1
公开(公告)日：2012-01-26
申请号：PCT/US2011/044760
申请日：2011-07-20
申请人： OCLARO (NEW JERSEY), INC. , COHEN, Gil , COREM, Yossi , HAREL, Roey
发明人： COHEN, Gil , COREM, Yossi , HAREL, Roey
IPC分类号： G02F1/31
CPC分类号： G02B26/02
摘要： An optical device compensates for decreased transmission of light caused by gaps between mirrors of a MEMS array. The optical device employs MEMS mirrors having non-reflecting regions on them disposed such that reflecting regions of the MEMS mirrors have substantially the same optical throughput, or an additional optical element having increased transmission at those spatial positions where light impinging on the gaps passes through. Alternatively, the optical device may employ a filter having spectral transmission characteristic with increased transmission at those wavelengths of dispersed light that impinge on the gaps.
摘要翻译：光学器件补偿由MEMS阵列的反射镜之间的间隙引起的光的透射减少。光学器件采用在其上设置有非反射区域的MEMS反射镜，其被布置为使得MEMS反射镜的反射区域具有基本相同的光学通过量，或者在入射到间隙上的光线穿过的那些空间位置具有增加的透射的附加光学元件。或者，光学器件可以采用具有光谱透射特性的滤光器，其具有在分散在这些间隙上的分散光的波长处具有增加的透射率的滤光器。

9. 发明申请

WO2011100605A1 WAVELENGTH SELECTIVE SWITCH WITH MULTIPLE INPUT/OUTPUT PORTS 审中-公开
标题翻译：具有多路输入/输出端口的波长选择开关
公开(公告)号：WO2011100605A1
公开(公告)日：2011-08-18
申请号：PCT/US2011/024616
申请日：2011-02-11
申请人： OCLARO TECHNOLOGY LIMITED , COHEN, Gil , COREM, Yossi , HAREL, Roey , LEUNG, Johnny
发明人： COHEN, Gil , COREM, Yossi , HAREL, Roey , LEUNG, Johnny
IPC分类号： G02B6/26
CPC分类号： G02B6/351 , G02B6/353 , G02B6/356 , H04J14/0212
摘要： A multi-port wavelength selective switch includes a one dimensional array of input and output ports. The multi-port wavelength selective switch further includes a wavelength dispersive element configured to receive input optical signals from the input ports, and to disperse wavelength components thereof. Additionally, the multi-port wavelength selective switch includes an array of beam steering devices. Each beam steering device is controllable to a position at which the beam steering device directs a wavelength component of an input optical signal received through a first input port to an output port and directs the same wavelength component of an input optical signal received through a second input port away from all of the output ports.
摘要翻译：多端口波长选择开关包括输入和输出端口的一维阵列。多端口波长选择开关还包括波长色散元件，其被配置为从输入端口接收输入光信号，并且分散其波长分量。另外，多端口波长选择开关包括一束波束转向装置。每个光束转向装置可控制到波束转向装置将通过第一输入端口接收的输入光信号的波长分量引导到输出端口的位置，并且引导通过第二输入接收的输入光信号的相同波长分量端口远离所有输出端口。

10. 发明申请

WO2002071133A3 FIBER OPTICAL ATTENUATOR 审中-公开
公开(公告)号：WO2002071133A3
公开(公告)日：2002-09-12
申请号：PCT/IL2002/000188
申请日：2002-03-08
申请人： XTELLUS INC. , COHEN, Gil
发明人： COHEN, Gil
IPC分类号： G02F1/01
摘要： A fiber optical attenuator utilizing the cut-off phenomenon for single mode propagation of an optical wave down a single mode fiber, comprising an element such as a pixelated liquid crystal element, capable of spatially changing the phase across the cross section of an input optical signal. Such a spatial phase change is equivalent to a change in the mode structure of the propagating wave. The signal propagating in the single mode output fiber is attenuated in accordance with the extent to which higher order modes are mixed into the low order mode originally present. When the mode is completely transformed to higher order modes, the wave is effectively completely blocked from entering the output single-mode fiber, and the attenuation is high. The level of attenuation is determined by the fraction of the wave which is converted to modes other than the lowest order mode, and is thus controllable by the voltage applied to the pixels of the liquid crystal element.

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