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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

WO2004099860A2 DYNAMIC OPTICAL PHASE SHIFTER COMPENSATOR 审中-公开
标题翻译：动态光学相位补偿器
公开(公告)号：WO2004099860A2
公开(公告)日：2004-11-18
申请号：PCT/IL2004/000388
申请日：2004-05-09
申请人： XTELLUS INC. , SUH, SeongWoo , COREM, Yossi
发明人： SUH, SeongWoo , COREM, Yossi
IPC分类号： G02F
CPC分类号： G02F1/13318 , G02F1/0121 , G02F1/31 , G02F2203/055 , G02F2203/12 , G02F2203/21 , G02F2203/50
摘要： A birefringent, electrically-controlled, wavelength selective, pixelated optical phase shifting device, in which the correct drive voltage for a desired phase shift through any pixel can be determined independently of changes in the drive voltage arising from changes in the environmental conditions, generally temperature. This is achieved by mounting a monitor phase shifting element controlled by its own drive voltage, in close proximity to the pixelated phase shifter, such that the monitor element and the phase shifter experience the same environmental condition. A probe optical beam of predefined wavelength is directed through the monitor element, and the transmitted beam measured as a function of the monitor drive voltage. This functional relationship is used to define the environmental condition in which the monitor element and the phase shifter, are situated, and the correct drive voltage for application to any phase shifter pixel can be determined.
摘要翻译：双折射，电控波长选择性像素化的光学相移装置，其中可以独立于由环境条件的变化引起的驱动电压的变化来确定用于期望的通过任何像素的相移的正确驱动电压，通常温度。这通过安装由其自身的驱动电压控制的监视器相移元件来实现，其紧邻像素化移相器，使得监视器元件和移相器经历相同的环境条件。预定波长的探测光束被引导通过监视器元件，并且根据监视器驱动电压测量发射光束。该功能关系用于定义监视元件和移相器所在的环境条件，并且可以确定适用于任何移相器像素的正确的驱动电压。

7. 发明申请

WO2006123344A2 SINGLE-POLE OPTICAL WAVELENGTH SELECTOR 审中-公开
标题翻译：单波长光波长选择器
公开(公告)号：WO2006123344A2
公开(公告)日：2006-11-23
申请号：PCT/IL2006/000590
申请日：2006-05-18
申请人： XTELLUS INC. , ARBELL, Haggai , COREM, Yossi , SUH, SeongWoo , FRENKEL, Boris
发明人： COREM, Yossi , SUH, SeongWoo , FRENKEL, Boris
IPC分类号： G02B6/42
CPC分类号： G02F1/31 , G02B6/272 , G02B6/29311
摘要： A fiber-optical, wavelength selective switch, especially for channel blocking applications. The input signal is converted to light beams having predefined polarizations relative to the plane in which optical manipulation of the beam is performed. The beams are then preferably laterally expanded in this system plane only, and then spatially dispersed in the beam expansion plane, preferably by means of a diffraction grating. The light is directed through a polarization rotation device, preferably a liquid crystal cell, pixelated along the wavelength dispersive direction such that each pixel operates on a separate wavelength. When the appropriate control voltage is applied to a pixel, the polarization of the light signal passing through that pixel is rotated. The wavelength dispersed beams from all of the pixels are then recombined, and are passed towards a polarization selective device, aligned such that only selected polarization components are transmitted out of the switch.
摘要翻译：光纤，波长选择开关，特别适用于通道阻塞应用。输入信号被转换成相对于执行光束的光学操作的平面具有预定极化的光束。然后优选在该系统平面中横向扩展梁，然后优选地通过衍射光栅在空间上分散在光束扩展平面中。光被引导通过偏振旋转装置，优选地是沿着波长色散方向像素化的液晶单元，使得每个像素在单独的波长上操作。当对像素施加适当的控制电压时，通过该像素的光信号的偏振旋转。然后将来自所有像素的波长分散光束重新组合，并且被传送到偏振选择装置，对准使得仅选择的偏振分量被传送出开关。

8. 发明申请

WO2005052507A1 SINGLE-POLE OPTICAL WAVELENGTH SELECTOR 审中-公开
标题翻译：单波长光波长选择器
公开(公告)号：WO2005052507A1
公开(公告)日：2005-06-09
申请号：PCT/IL2003/001002
申请日：2003-11-26
申请人： XTELLUS INC. , SUH, SeongWoo , COREM, Yossi
发明人： SUH, SeongWoo , COREM, Yossi
IPC分类号： G01B9/02
CPC分类号： G02B6/29308 , G02B6/272 , G02B6/2766 , G02B6/2931 , G02B6/29313
摘要： A single-pole, wavelength selective switch in which thee input optical signal (18, 19) is converted to a light beam having a defined polarization, such as S-polarization, with respect to the system plane. The beam is laterally expanded in the system plane, and then spatially dispersed in the same plane as that of the beam expansion, preferably by means of a diffraction grating (34). The light is directed through a polarization conversion device, preferably a liquid crystal cell (24), pixelated along the wavelength dispersive direction such that each pixel operates on a separate wavelength. When the appropriate control voltage is applied to a pixel, the polarization of the light signal passing through that pixel is rotated, such as from S to P. The wavelength dispersed beams from the pixels are recombined, and are passed towards another polarizer at the switch output, aligned such that only the selected polarization components are allowed to exit.
摘要翻译：一个单极波长选择开关，其中输入光信号（18,19）相对于系统平面转换为具有限定极化（例如S偏振）的光束。光束在系统平面中横向膨胀，然后空间上分散在与光束膨胀相同的平面中，优选地通过衍射光栅（34）。光被引导通过偏振转换装置，优选是沿着波长色散方向像素化的液晶单元（24），使得每个像素在单独的波长上操作。当对像素施加适当的控制电压时，通过该像素的光信号的偏振例如从S到P旋转。来自像素的波长分散光束被重新组合，并且在开关处被传递到另一个偏振器输出，对齐使得仅允许选择的偏振分量退出。

9. 发明申请

WO2004099822A2 OPTICAL DEVICES WITH CASCADED LIQUID CRYSTAL ELEMENTS 审中-公开
标题翻译：具有液晶液晶元件的光学装置
公开(公告)号：WO2004099822A2
公开(公告)日：2004-11-18
申请号：PCT/IL2004/000389
申请日：2004-05-09
申请人： XTELLUS INC. , SUH, SeongWoo , COREM, Yossi
发明人： SUH, SeongWoo , COREM, Yossi
IPC分类号： G02B
CPC分类号： G02F1/13471 , G02F1/01 , G02F1/1347 , G02F2201/16 , G02F2202/40 , G02F2203/04 , G02F2203/50
摘要： An optical beam processing device with two serially disposed birefringent elements, each element having its own direction of orientation. At least one element is pixelated with electrodes activated by control signals. The directions of orientation of the elements are aligned such that the phase shift imparted to the beam by an unactivated pixel of one element, cancels the phase shift imparted to the beam by the other element, such that the beam traversing that pixel undergoes zero phase shift. An appropriate control signal adds a phase shift to the beam passing through that pixel, so as to generate an overall phase shift through the device for any desired wavelength, which could not be readily achieved by either of the elements alone. The resulting device is thus able to provide switchable phase shifts of exactly zero and pi, for different wavelengths, generally unattainable by a single element device.
摘要翻译：一种具有两个串联布置的双折射元件的光束处理装置，每个元件具有其自己的取向方向。至少有一个元件被控制信号激活的电极像素化。元件的取向方向对准，使得由一个元件的未激活像素赋予光束的相移抵消由另一元件施加到光束的相移，使得穿过该像素的光束经历零相移。合适的控制信号将相移移到通过该像素的光束上，以便产生通过该装置的任何期望波长的整体相移，这不能单独通过任何一个元件来实现。因此，所得到的器件能够为通常不能由单个元件器件实现的不同波长提供恰好为零和pi的可切换相移。

10. 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。

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