公开(公告)号：US06559992B2

公开(公告)日：2003-05-06

申请号：US09728271

申请日：2000-12-01

申请人： Gan Zhou ,  Kuang-Yi Wu ,  Chi-Hao Cheng

发明人： Gan Zhou ,  Kuang-Yi Wu ,  Chi-Hao Cheng

IPC分类号： H04B1000

CPC分类号： G02B6/29394 ,  G02B6/29302 ,  G02B6/29349 ,  G02B6/29358 ,  H04J14/02

摘要： An interferometer receives an input optical signal and outputs a signal after changing at least the dispersion of said signal. At least portions of the interferometer are adjustable to adjust at least a first dispersion parameter. Examples of dispersion parameters which are adjustable include dispersion magnitude, center wavelengths and waveshapes or slopes. Preferably the dispersion in the output signal is substantially reduced or substantially eliminated, compared to the dispersion of the input signal. By providing for adjustability of one or more dispersion parameters, a dispersion compensator can be appropriately adjusted for use in a variety of applications.

公开(公告)号：US06498680B1

公开(公告)日：2002-12-24

申请号：US09717050

申请日：2000-11-20

申请人： Gan Zhou ,  Kuang-Yi Wu ,  Sihan Lin ,  Ding Wang

发明人： Gan Zhou ,  Kuang-Yi Wu ,  Sihan Lin ,  Ding Wang

IPC分类号： G02B530

CPC分类号： G02B6/29302 ,  G02B6/2713 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/2773 ,  G02B6/29358 ,  G02B6/29386 ,  G02B6/29395 ,  G02F1/31 ,  H04J14/02 ,  H04J14/0212 ,  H04J14/06 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035 ,  Y10S359/90

摘要： An optical wavelength router separates even and odd optical channels from an input WDM signal. The input beam is first converted into a pair of orthogonally-polarized beams. One of the beams is reflected by a mirror, while the other is reflected by a Fabry-Perot resonator (or etalon). The group delay of the reflected beams is strongly dependent on wavelength. The beams reflected from the resonator and mirror are combined and interfere in a birefringent element (e.g., a beam displacer or polarized beamsplitter) to produce a beam having mixed polarization as a function of wavelength. The polarized components of this beam are separated by a polarization-dependent routing element to produce two output beams containing complementary subsets of the input optical spectrum (e.g., even optical channels are routed to output port A and odd optical channels are routed to output port B).

摘要翻译： 光波长路由器将偶数和奇数光通道与输入WDM信号分开。 输入光束首先转换为一对正交偏振光束。 一个光束被镜子反射，而另一个由法布里 - 珀罗谐振器（或标准具）反射。 反射光束的群延迟很大程度上取决于波长。 从谐振器和反射镜反射的光束被组合并且干涉双折射元件（例如，光束置换器或偏振分束器），以产生具有作为波长的函数的混合偏振的光束。 该光束的极化分量由偏振相关的路由元件分离，以产生包含输入光谱的互补子集的两个输出光束（例如，甚至光信道被路由到输出端口A，并且奇数光信道被路由到输出端口B ）。

公开(公告)号：US06455841B2

公开(公告)日：2002-09-24

申请号：US09874641

申请日：2001-06-05

申请人： Gan Zhou ,  Kuang-Yi Wu

发明人： Gan Zhou ,  Kuang-Yi Wu

IPC分类号： G02F101

CPC分类号： H04J14/06 ,  G02B6/29302 ,  G02B6/29386 ,  H04J14/02 ,  Y10S359/90

摘要： A method and apparatus for optical wavelength routing separates even and odd optical channels from an input WDM signal. The input beam is first converted to at least one pair of orthogonally-polarized beams. A split-mirror resonator has a front mirror with two regions having different reflectivities, and a reflective back mirror spaced a predetermined distance behind the front mirror. Each of the orthogonally-polarized beams is incident on a corresponding region of the front mirror of the split-mirror resonator. A portion of each beam is reflected by the front mirror, which the remainder of each beam enters the resonator cavity where it is reflected by the back mirror back through the front mirror. The group delay of each reflected beam is strongly dependent on wavelength. The two reflected beams from the resonator are combined and interfere in a birefringent element (e.g., a beam displacer or waveplates) to produce a beam having mixed polarization as a function of wavelength. The polarized components of this beam are separated by a polarization-dependent routing element (e.g., a polarized beamsplitter) to produce two output beams containing complimentary subsets of the input optical spectrum (e.g., even optical channels are routed to output port A and odd optical channels are routed to output port B).

摘要翻译： 用于光波长路由的方法和装置将偶数和奇数光信道与输入WDM信号分开。 输入光束首先被转换成至少一对正交偏振光束。 分裂镜谐振器具有前反射镜，具有不同反射率的两个区域，以及在前反射镜后面隔开预定距离的反射后视镜。 每个正交偏振光束入射在分裂镜谐振器的前反射镜的相应区域上。 每个光束的一部分被前反射镜反射，每个光束的其余部分进入谐振腔，在其中反射镜通过前反射镜反射回来。 每个反射光束的群延迟强烈依赖于波长。 来自谐振器的两个反射光束被组合并且干涉双折射元件（例如，光束置换器或波片），以产生具有作为波长的函数的混合极化的光束。 该光束的极化分量由偏振相关的路由元件（例如，偏振分束器）分离，以产生包含输入光谱的互补子集的两个输出光束（例如，甚至光信道被路由到输出端口A和奇数光学 通道路由到输出端口B）。

公开(公告)号：US06690846B2

公开(公告)日：2004-02-10

申请号：US09798659

申请日：2001-03-01

申请人： Gan Zhou ,  Kuang-Yi Wu

发明人： Gan Zhou ,  Kuang-Yi Wu

IPC分类号： G02B626

CPC分类号： H04J14/0208 ,  G02B6/272 ,  G02B6/2746 ,  G02B6/29302 ,  G02B6/29349 ,  G02B6/29358 ,  G02B6/29386 ,  H04J14/02 ,  H04J14/0213 ,  H04J14/06

摘要： An optical wavelength router separates an input signal into two complementary output signals. A beamsplitter of the wavelength router separates the input signal into a first beam and a second beam. A first resonator reflects the first beam producing a group delay that is dependent on wavelength. Similarly, a second resonator reflects the second beam. The center wavelength of the second resonator is offset relative to that of the first resonator by one half of the free spectral range of the first resonator, so that the resonance frequencies of the second resonator are matched to the anti-resonance frequencies of the first resonator. The beams reflected by the resonators interfere within the beamsplitter to produce two output signals containing complementary subsets of the spectrum of the input signal (e.g., even optical channels are routed to a first output port and the odd optical channels are routed to a second output port).

公开(公告)号：US06243200B1

公开(公告)日：2001-06-05

申请号：US09547812

申请日：2000-04-11

申请人： Gan Zhou ,  Kuang-Yi Wu

发明人： Gan Zhou ,  Kuang-Yi Wu

IPC分类号： G02B530

CPC分类号： H04J14/06 ,  G02B6/29302 ,  G02B6/29386 ,  H04J14/02 ,  Y10S359/90

摘要： A method and apparatus for optical wavelength routing separates even and odd optical channels from an input WDM signal. The input beam is first converted to at least one pair of orthogonally-polarized beams. A split-mirror resonator has a front mirror with two regions having different reflectivities, and a reflective back mirror spaced a predetermined distance behind the front mirror. Each of the orthogonally-polarized beams is incident on a corresponding region of the front mirror of the split-mirror resonator. A portion of each beam is reflected by the front mirror, while the remainder of each beam enters the resonator cavity where it is reflected by the back mirror back through the front mirror. The group delay of each reflected beam is strongly dependent on wavelength. The two reflected beams from the resonator are combined and interfere in a birefringent element (e.g., a beam displacer or waveplates) to produce a beam having mixed polarization as a function of wavelength. The polarized components of this beam are separated by a polarization-dependent routing element (e.g., a polarized beamsplitter) to produce two output beams containing complementary subsets of the input optical spectrum (e.g., even optical channels are routed to output port A and odd optical channels are routed to output port B).

摘要翻译： 用于光波长路由的方法和装置将偶数和奇数光信道与输入WDM信号分开。 输入光束首先被转换成至少一对正交偏振光束。 分裂镜谐振器具有前反射镜，具有不同反射率的两个区域，以及在前反射镜后面隔开预定距离的反射后视镜。 每个正交偏振光束入射在分裂镜谐振器的前反射镜的相应区域上。 每个光束的一部分被前反射镜反射，而每个光束的其余部分进入谐振腔，在其中反射镜通过前反射镜反射回来。 每个反射光束的群延迟强烈依赖于波长。 来自谐振器的两个反射光束被组合并且干涉双折射元件（例如，光束置换器或波片），以产生具有作为波长的函数的混合极化的光束。 该光束的偏振分量由偏振相关的路由元件（例如，偏振分束器）分离，以产生包含输入光谱的互补子集的两个输出光束（例如，甚至光信道被路由到输出端口A和奇数光 通道路由到输出端口B）。

公开(公告)号：US06810171B2

公开(公告)日：2004-10-26

申请号：US10739495

申请日：2003-12-18

申请人： Gan Zhou ,  Kuang-Yi Wu

发明人： Gan Zhou ,  Kuang-Yi Wu

IPC分类号： G02B626

CPC分类号： H04J14/0208 ,  G02B6/272 ,  G02B6/2746 ,  G02B6/29302 ,  G02B6/29349 ,  G02B6/29358 ,  G02B6/29386 ,  H04J14/02 ,  H04J14/0213 ,  H04J14/06

摘要： An optical wavelength router separates an input signal into two complementary output signals. A beamsplitter of the wavelength router separates the input signal into a first beam and a second beam. A first resonator reflects the first beam producing a group delay that is dependent on wavelength. Similarly, a second resonator reflects the second beam. The center wavelength of the second resonator is offset relative to that of the first resonator by one half of the free spectral range of the first resonator, so that the resonance frequencies of the second resonator are matched to the anti-resonance frequencies of the first resonator. The beams reflected by the resonators interfere within the beamsplitter to produce two output signals containing complementary subsets of the spectrum of the input signal (e.g., even optical channels are routed to a first output port and the odd optical channels are routed to a second output port).

摘要翻译： 光波长路由器将输入信号分为两个互补输出信号。 波长路由器的分束器将输入信号分离成第一波束和第二波束。 第一谐振器反射第一光束产生取决于波长的群延迟。 类似地，第二谐振器反射第二光束。 第二谐振器的中心波长相对于第一谐振器的中心波长偏移了第一谐振器的自由光谱范围的一半，使得第二谐振器的谐振频率与第一谐振器的反谐振频率相匹配 。 由谐振器反射的光束在分束器内干涉以产生包含输入信号的光谱的互补子集的两个输出信号（例如，甚至光信道被路由到第一输出端口，并且奇数光信道被路由到第二输出端口 ）。

公开(公告)号：US6166838A

公开(公告)日：2000-12-26

申请号：US36202

申请日：1998-03-06

申请人： Jian-Yu Liu ,  Kuang-Yi Wu

发明人： Jian-Yu Liu ,  Kuang-Yi Wu

IPC分类号： G02F1/31 ,  G02B6/293 ,  G02B6/34 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02 ,  H04Q3/52 ,  H04Q11/00 ,  H04J14/06

CPC分类号： G02B6/29302 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/29383 ,  H04J14/0212 ,  H04J14/06 ,  H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0026 ,  H04Q2011/0035

摘要： An optical add/drop wavelength switch is controllably changed from a bridge state, in which output is identical to input, e.g. a Wavelength Division Multiplexed (WDM) input, and an add/drop state, In which a signal input to an add port is substituted for a particular wavelength subrange of the WDM input, other wavelengths of the WDM input being unchanged. In one embodiment, the wavelength subrange of the WDM signal is given a polarization different from other wavelengths of the WDM, such as by using a stacked waveplate or other optical filter or polarization discriminator. The differently-polarized wavelengths can the be spatially separated, e.g. by a birefringent element or a polarization beam splitter, preferably In a bit-controlled fashion, such as by using a liquid crystal or other polarization controller. Polarization controllers and discriminators can be used similarly to selectably align or combine the add signal with the portion of the WDM signal outside the subrange. The add/drop wavelength switch can be used, e.g. In an optical token ring network and/or to make-up an optical crossbar for exchanging any arbitrarily designatable channels, e.g. among a plurality of multi-channel optical fibers.

公开(公告)号：US06137606A

公开(公告)日：2000-10-24

申请号：US411935

申请日：1999-10-04

申请人： Kuang-Yi Wu ,  Jian-Yu Liu

发明人： Kuang-Yi Wu ,  Jian-Yu Liu

IPC分类号： G02B6/34 ,  G02F1/31 ,  H04B10/02 ,  H04B10/28 ,  H04J14/00 ,  H04J14/02 ,  H04J14/06 ,  H04Q11/00 ,  H04B14/02 ,  G02F1/03

CPC分类号： H04J14/0289 ,  G02B6/272 ,  G02B6/29302 ,  G02B6/29395 ,  G02F1/31 ,  H04J14/0209 ,  H04J14/0212 ,  H04Q11/0003 ,  H04Q11/0005 ,  G02B6/29386 ,  H04J14/0201 ,  H04J14/0291 ,  H04J14/06 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035

摘要： A programmable wavelength router having a plurality of cascaded stages where each stage receives one or more optical signals comprising a plurality of wavelength division multiplexed (WDM) channels. Each stage divides the received optical signals into divided optical signals comprising a subset of the channels and spatially positions the divided optical signals in response to a control signal applied to each stage. Preferably each stage divides a received WDM signal into two subsets that are either single channel or WDM signals. A final stage outputs optical signals at desired locations. In this manner, 2.sup.N optical signals in a WDM signal can be spatially separated and permuted using N control signals.

摘要翻译： 一种具有多个级联级的可编程波长路由器，其中每个级接收包括多个波分复用（WDM）信道的一个或多个光信号。 每个级将接收到的光信号划分成包括信道子集的分割光信号，并且响应于施加到每个级的控制信号对分割的光信号进行空间位置。 每个级别优选地将接收的WDM信号划分为单个信道或WDM信号的两个子集。 最终阶段在期望的位置输出光信号。 以这种方式，WDM信号中的2N个光信号可以使用N个控制信号在空间上分离和置换。

公开(公告)号：US5963291A

公开(公告)日：1999-10-05

申请号：US897353

申请日：1997-07-21

申请人： Kuang-Yi Wu ,  Jian-Yu Liu ,  Yen-Chen Chen

发明人： Kuang-Yi Wu ,  Jian-Yu Liu ,  Yen-Chen Chen

IPC分类号： G02F1/03 ,  G02F1/133 ,  G02F1/13363 ,  G02F1/1347 ,  G02F1/139 ,  G02F1/31 ,  G02F1/13 ,  G02B27/10

CPC分类号： G02F1/31 ,  G02F1/0311 ,  G02F1/0322 ,  G02F1/13318 ,  G02F1/13363 ,  G02F1/13471 ,  G02F1/1393 ,  G02F2203/48

摘要： An optical power regulator employs a variable optical attenuator having a first birefringent element that spatially separates the input optical beam into two orthogonally-polarized beams. Both beams pass through a polarization modulator (e.g., a liquid crystal material) that rotates their polarizations to an extent determined by the control voltage applied across the polarization modulator. A final birefringent element spatially separates both beams exiting the polarization modulator into two pairs of orthogonally-polarized beams (i.e., two horizontally-polarized and two vertically-polarized components). The thicknesses and optical properties of the birefringent elements are selected so that two of the four beams are combined by the final birefringent element to exit at the output port of the regulator, while the remaining two beams are blocked. As a result, the degree of attenuation is determined by the degree of polarization rotation by the polarization modulator, which in turn is a function of the control voltage applied to the polarization modulator. Preferably, the liquid crystal material used in the polarization modulator has a high optical birefringence and a low dielectric anisotropy, which results in a relatively shallow attenuation curve as a function of applied voltage. The intensity of the optical signal is measured by a photodetector and used by a controller to output the control voltage applied to the liquid crystal material to maintain a desired optical power level at the output port of the regulator.

摘要翻译： 光功率调节器采用具有第一双折射元件的可变光衰减器，其将输入光束空间分离成两个正交偏振光束。 两个光束通过偏振调制器（例如，液晶材料），其将它们的极化旋转到由施加在偏振调制器上的控制电压确定的程度。 最终的双折射元件将离开偏振调制器的两个光束空间分离成两对正交偏振光束（即两个水平极化和两个垂直极化分量）。 选择双折射元件的厚度和光学性质，使得四个光束中的两个由最终双折射元件组合以在调节器的输出端口处离开，而剩余的两个光束被阻挡。 结果，衰减程度由偏振调制器的偏振旋转程度确定，偏振调制器又是施加到偏振调制器的控制电压的函数。 优选地，在偏振调制器中使用的液晶材料具有高的光学双折射和低介电各向异性，这导致作为施加电压的函数的相对浅的衰减曲线。 光信号的强度由光电检测器测量，并被控制器用来输出施加到液晶材料的控制电压，以便在调节器的输出端口处保持期望的光功率电平。

公开(公告)号：US20140050480A1

公开(公告)日：2014-02-20

申请号：US14064831

申请日：2013-10-28

申请人： Kuang-Yi Wu ,  Mary R. Phillips ,  Fred S. Hirt

发明人： Kuang-Yi Wu ,  Mary R. Phillips ,  Fred S. Hirt

IPC分类号： H04B10/548

CPC分类号： H04B10/548 ,  H04B10/2563 ,  H04J14/02 ,  H04J14/0298

摘要： In one embodiment, a system includes at least one tone generator, a first transmitter, and a second transmitter. The at least one tone generator is operable to generate a plurality of modulation tones comprising at least a first modulation tone having a first tone frequency and a second modulation tone having a second tone frequency that is different from the first tone frequency. The first transmitter is operable to apply the first modulation tone to a first optical signal such that at least a portion of the first optical signal is divided into one or more sidebands. The second transmitter is operable to apply the second modulation tone to a second optical signal such that at least a portion of the second optical signal is divided into one or more sidebands.

摘要翻译： 在一个实施例中，系统包括至少一个音调发生器，第一发射器和第二发射器。 所述至少一个音调发生器可操作以产生多个调制音调，所述多个调制音调至少包括具有第一音调频率的第一调制音调和具有与第一音调频率不同的第二音调频率的第二调制音调。 第一发射机可操作以将第一调制音调应用于第一光信号，使得第一光信号的至少一部分被划分成一个或多个边带。 第二发射机可操作以将第二调制音应用于第二光信号，使得第二光信号的至少一部分被划分成一个或多个边带。