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公开(公告)号：US5915051A
公开(公告)日：1999-06-22
申请号：US792916
申请日：1997-01-21
申请人： Jay N. Damask , Thomas E. Murphy , Juan Ferrera , Michael Hong Yeol Lim , Henry I. Smith , Hermann A. Haus
发明人： Jay N. Damask , Thomas E. Murphy , Juan Ferrera , Michael Hong Yeol Lim , Henry I. Smith , Hermann A. Haus
CPC分类号： G02B6/12007 , G02F1/3136 , G02B2006/12107 , G02B2006/12173
摘要： A wavelength-selective optical switch having a first input port for accepting a plurality of copropagating optical channels, each of the channels having a distinct wavelength band. The optical switch includes first and second output ports. A wavelength-selective optical filter is connected to receive the copropagating optical channels from the first input port to extract a selected one of the channels while allowing the remaining channels to copropagate to the first output port. An interferometric switch is connected to receive the selected extracted channel; the interferometric switch includes a controller for controlling propagation of the selected extracted channel to either the second output port, the optical filter, or both. The optical filter is connected to receive from the interferometric switch an optical channel to be combined with the remaining copropagating channels and all directed to the first output port. In a first control state of the controller, the interferometric switch is adapted to direct the selected extracted channel to the optical filter, while in a second control state of the controller, the interferometric switch is adapted to direct the selected extracted channel to the second output port. A second input port can be provided for accepting an injected optical channel having a wavelength band corresponding to the wavelength band of the selected extracted channel. This second input port is connected to direct the injected optical channel to the interferometric switch. In this scenario, the interferometric switch is adapted, in the second control state of the controller, to direct the injected channel to the optical filter, and is adapted to direct the injected channel, in a first control state of the controller, to the second output port.
摘要翻译： 一种波长选择性光开关，具有用于接收多个共传播光信道的第一输入端口，每个信道具有不同的波段。 光开关包括第一和第二输出端口。 连接波长选择性滤光器以从第一输入端口接收共同传播的光通道，以提取所选择的一个通道，同时允许其余通道共同传播到第一输出端口。 连接干涉式开关以接收所选择的提取的通道; 干涉式开关包括控制器，用于控制所选择的提取的通道到第二输出端口，滤光器或两者的传播。 光滤波器被连接以从干涉式开关接收要与剩余的共同传播信道组合的光信道，并且全部被引导到第一输出端口。 在控制器的第一控制状态下，干涉式开关适于将所选择的提取的通道引导到滤光器，而在控制器的第二控制状态下，干涉式开关适于将所选择的提取的通道引导至第二输出 港口。 可以提供第二输入端口用于接受具有与所选择的提取的信道的波长带相对应的波长带的注入光信道。 该第二输入端口被连接以将注入的光通道引导到干涉式开关。 在这种情况下，在控制器的第二控制状态下，干涉式开关适应于将注入的通道引导到滤光器，并且适于在控制器的第一控制状态下将注入的通道引导到第二 输出端口
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公开(公告)号：US06252711B1
公开(公告)日：2001-06-26
申请号：US09532143
申请日：2000-03-21
IPC分类号： G02B2728
CPC分类号： G02B6/272 , G02B6/2766 , G02B27/288 , H04J14/02 , Y10S359/90
摘要： A birefringent filter includes an input optical apparatus for receiving an input optical beam and producing therefrom parallel first and second optical beams offset in a first direction and having the same polarization. A birefringent filter unit receives the first and second polarized optical beams and produces a first and second elliptically polarized optical beams. An output optical apparatus combines predetermined components of the first and second elliptically polarized optical beams to form a first and second elliptical polarized output beams. The two output beams have intensities that vary inversely, in a periodic manner, as a function of frequency of the input optical beam.
摘要翻译： 双折射滤光器包括输入光学装置，用于接收输入光束，并由其产生沿第一方向偏移且具有相同极化的平行第一和第二光束。 双折射滤波器单元接收第一和第二偏振光束并产生第一和第二椭圆偏振光束。 输出光学装置组合第一和第二椭圆偏振光束的预定分量以形成第一和第二椭圆极化输出光束。 两个输出光束具有以周期方式作为输入光束的频率的函数反向变化的强度。
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3.发明授权公开(公告)号：US06891674B2
公开(公告)日：2005-05-10
申请号：US10013890
申请日：2001-12-07
申请人： Jay N. Damask
发明人： Jay N. Damask
CPC分类号： G02B6/278 , G02F1/0136 , H04B10/2569
摘要： A polarization mode dispersion generator for generating polarization mode dispersion (“PMD”) spectra is provided. The generator includes a plurality of birefringent stages, each stage including a differential group delay (“DGD”) element and a phase-shifting element. The generator is capable of inducing an amount of polarization mode-mixing between at least one adjacent pair of stages. The shape of a PMD spectrum can be preserved while frequency shifting the spectrum in either direction. Alternatively, the shape of the PMD spectrum can be changed without frequency shifting.
摘要翻译： 提供了用于产生偏振模色散（“PMD”）光谱的偏振模色散发生器。 发生器包括多个双折射级，每个级包括差分组延迟（“DGD”）元件和相移元件。 发生器能够在至少一个相邻的一对级之间引起一定量的偏振模式混合。 可以保持PMD频谱的形状，同时在任一方向上频移频谱。 或者，可以在没有频移的情况下改变PMD频谱的形状。
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公开(公告)号：US06847484B2
公开(公告)日：2005-01-25
申请号：US10061897
申请日：2002-02-01
申请人： Jay N. Damask , Shih-Cheng Wang
发明人： Jay N. Damask , Shih-Cheng Wang
CPC分类号： H04B10/2569 , G02F1/0136 , G02F1/0311 , G02F1/0322 , G02F2202/40 , G02F2203/05
摘要： Methods and apparatus for coherent polarization mode dispersion generation are provided. A generator can include at least four birefringent stages. The birefringent stages are in optical series, and each includes a differential group delay (“DGD”) element. The intermediate stages' DGD elements are harmonic. Also, these intermediate stages each include a phase-shifting element. The generator can also include a polarization mode-mixing apparatus and a variable phase-shifting apparatus. The mode-mixing apparatus is capable of inducing polarization mode-mixing between at least one pair of adjacent stages to generate DGD and second order PMD independently at at least one optical frequency. The variable phase-shifting apparatus can include a phase-shifting controller coupled to each of said phase-shifting elements. A graphical user interface for PMD emulation, a PMD compensator for reducing PMD impairment, and calibration methods are also provided.
摘要翻译： 提供了相干偏振模色散产生的方法和装置。 发生器可以包括至少四个双折射级。 双折射级是光学系列，并且每个都包括差分组延迟（“DGD”）元件。 中间阶段的DGD元素是谐波。 此外，这些中间级各自包括相移元件。 发生器还可以包括偏振模式混合装置和可变相移装置。 模式混合装置能够在至少一对相邻级之间引起偏振模式混合，以在至少一个光频率下独立产生DGD和二阶PMD。 可变移相装置可以包括耦合到每个所述相移元件的相移控制器。 还提供了用于PMD仿真的图形用户界面，用于减少PMD损伤的PMD补偿器和校准方法。
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公开(公告)号：US06577445B1
公开(公告)日：2003-06-10
申请号：US09664579
申请日：2000-09-18
申请人： Jay N. Damask
发明人： Jay N. Damask
IPC分类号： G02B530
CPC分类号： G02B5/3083
摘要： A stack of two or more birefringent crystals having complimentary properties is arranged to have zero net beam walk-off at off-normal incidence and a finite free-spectral range. In another embodiment, the birefringent crystal materials are selected to provide reduced temperature dependence. The result is an optically and mechanically stable composite birefringent crystal unit. A variety of folded birefringent filters are implemented using the composite birefringent crystal.
摘要翻译： 具有互补性质的两个或更多个双折射晶体的堆叠被布置为在非法入射下具有零净光束离散和有限的自由光谱范围。 在另一个实施方案中，选择双折射晶体材料以提供降低的温度依赖性。 结果是光学和机械稳定的复合双折射晶体单元。 使用复合双折射晶体实现各种折叠双折射滤光器。
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6.发明授权Methods and apparatus for generation and control of coherent polarization mode dispersion 失效用于产生和控制相干偏振模色散的方法和装置公开(公告)号：US06934083B2
公开(公告)日：2005-08-23
申请号：US10895968
申请日：2004-07-22
申请人： Jay N. Damask
发明人： Jay N. Damask
CPC分类号： G02B6/278 , G02B6/29395 , H04B10/2569
摘要： Methods and apparatus for coherent PMD generation are provided. A PMD generator can include at least four birefringent stages in optical series, thereby forming at least three pairs of adjacent stages. Each of the stages includes a harmonic differential group delay element and a phase-compensating element. The generator can be made colorless (i.e., made to have the same PMD at each WDM channel) and can be operated such that DGD and second order PMD can be independently generated and controlled. These PMD generators can be used in PMD compensators and PMD emulators.
摘要翻译： 提供了相干PMD生成的方法和装置。 PMD发生器可以包括光学系列中的至少四个双折射级，从而形成至少三对相邻的级。 每个级包括谐波差分组延迟元件和相位补偿元件。 发生器可以制成无色（即，在每个WDM通道处具有相同的PMD），并且可以被操作，使得可以独立地生成和控制DGD和二阶PMD。 这些PMD发生器可用于PMD补偿器和PMD仿真器。
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7.发明授权公开(公告)号：US06867918B2
公开(公告)日：2005-03-15
申请号：US10013596
申请日：2001-12-07
申请人： Jay N. Damask
发明人： Jay N. Damask
CPC分类号： G02B6/278 , G02B6/29395 , H04B10/2569
摘要： Methods and apparatus for coherent PMD generation are provided. A PMD generator can include at least four birefringent stages in optical series, thereby forming at least three pairs of adjacent stages. Each of the stages includes a harmonic differential group delay element and a phase-compensating element. The generator can be made colorless (i.e., made to have the same PMD at each WDM channel) and can be operated such that DGD and second order PMD can be independently generated and controlled. These PMD generators can be used in PMD compensators and PMD emulators.
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公开(公告)号：US06671094B2
公开(公告)日：2003-12-30
申请号：US10308723
申请日：2002-12-03
申请人： Jay N. Damask
发明人： Jay N. Damask
IPC分类号： G02B530
CPC分类号： G02B5/3083
摘要： A stack of two or more birefringent crystals having complimentary properties is arranged to have zero net beam walk-off at off-normal incidence and a finite free-spectral range. In another embodiment, the birefringent crystal materials are selected to provide reduced temperature dependence. The result is an optically and mechanically stable composite birefringent crystal unit. A variety of folded birefringent filters are implemented using the composite birefringent crystal.
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公开(公告)号：US06393039B1
公开(公告)日：2002-05-21
申请号：US09532150
申请日：2000-03-21
IPC分类号： H01S310
CPC分类号： G02B27/288 , G02B27/283
摘要： A double-pass birefringent filter apparatus comprises an external-interface apparatus (illustratively including of a beam-displacer element and a waveplate element); a birefringent filter comprised of a series of several birefringent waveplates; and a wrap-around unit (illustratively comprised of a beam-displacer element and a retro-reflector). In response to an input beam received at the external-interface apparatus, the double-pass birefringent filter forms two output beams having complimentary intensities which vary periodically with frequency.
摘要翻译： 双通双折射滤波器装置包括外部接口装置（示例性地包括光束置换元件和波片元件）; 由一系列几个双折射波片组成的双折射滤光片; 和绕线单元（示意性地由光束置换元件和后向反射器组成）。 响应于在外部接口设备处接收的输入光束，双通双折射滤光器形成具有随频率周期性变化的互补强度的两个输出光束。
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