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    Polarization-independent optical wavelength selective coupler
    1.
    发明授权
    Polarization-independent optical wavelength selective coupler 失效
    偏振无关光波长选择耦合器

    公开(公告)号：US5495543A

    公开(公告)日：1996-02-27

    申请号：US372253

    申请日：1995-01-13

    Applicant: Rodney C. Alferness ,  Fred L. Heismann

    Inventor： Rodney C. Alferness ,  Fred L. Heismann

    IPC: G02B5/18 ,  G02B6/124 ,  G02B6/34 ,  G02B6/36

    CPC classification number: G02B6/12007 ,  G02B6/124 ,  G02B6/29317 ,  G02B6/29397

    Abstract: A double-periodic grating is described for obtaining polarization-independent filtering and coupling. The grating may be viewed as a combination of two gratings with slightly different grating periods. The two periods are carefully chosen to match the difference in propagation constants of the TE and TM polarization modes such that both modes are coupled at the same wavelength.A novel method of obtaining a double-periodic grating is described.

    Abstract translation: 描述了用于获得偏振无关滤波和耦合的双周期光栅。 光栅可以被视为具有稍微不同的光栅周期的两个光栅的组合。 仔细选择两个周期以匹配TE和TM偏振模式的传播常数的差异，使得两种模式在相同波长下耦合。 描述了一种获得双周期光栅的新方法。

    Tunable polarization independent wavelength filter
    4.
    发明授权
    Tunable polarization independent wavelength filter 失效
    可调谐偏振独立波长滤波器

    公开(公告)号：US4390236A

    公开(公告)日：1983-06-28

    申请号：US245626

    申请日：1981-03-19

    Applicant: Rodney C. Alferness

    Inventor： Rodney C. Alferness

    IPC: G02B6/14 ,  G02F1/01 ,  G02F1/03 ,  G02F1/035 ,  G02F1/05 ,  G02F1/313 ,  H01P1/213 ,  H04J14/02 ,  G02B5/174

    CPC classification number: H04J14/02 ,  G02F1/0353 ,  G02F1/3132 ,  G02F2001/0142 ,  G02F2201/124 ,  G02F2203/055 ,  G02F2203/06

    Abstract: Tunable, polarization independent wavelength filtering is obtained in a circuit configuration comprising an input polarization selective coupler which separates the TM and TE mode waves. A first, wavelength selective mode converter, in the TE mode wavepath, converts the TE mode wave energy at the selected wavelength to the TM mode. Similarly, a second wavelength selective mode converter, located in the TM mode wavepath, converts the TM mode wave energy at the selected wavelength to the TE mode. An output polarization selective coupler combines the TE and TM mode wave energy at the selected wavelength in one output wavepath and combines the balance of the input signal in a second wavepath. By cascading a plurality of such circuits, each tuned to a different wavelength, a wavelength multiplexed signal can be demultiplexed.

    Abstract translation: 在包括分离TM和TE模式波的输入偏振选择耦合器的电路配置中获得可调谐的偏振独立波长滤波。 在TE模式波导路径中的第一个波长选择模式转换器将所选波长的TE模式波能转换成TM模式。 类似地，位于TM模式波导路径中的第二波长选择模式转换器将所选波长的TM模波能转换为TE模式。 输出偏振选择耦合器在一个输出波形路径中将TE和TM模式波能量组合在所选波长处，并将输入信号的平衡组合在第二波形路径中。 通过级联多个这样的电路，每个调谐到不同的波长，波分复用信号可以被解复用。

    Velocity mismatched modulator
    5.
    发明授权
    Velocity mismatched modulator 失效
    速度失配调制器

    公开(公告)号：US4381139A

    公开(公告)日：1983-04-26

    申请号：US182432

    申请日：1980-08-29

    Applicant: Rodney C. Alferness

    Inventor： Rodney C. Alferness

    IPC: G02F1/313 ,  G02B5/14

    CPC classification number: G02F1/3134

    Abstract: The coupling efficiency between a pair of identical optical waveguides (11, 12) is modulated by a traveling electrical wave (14, 15). Because the propagating constants of the optical and modulating systems are not equal, the interaction between them is limited to periodic intervals along the optical wavepaths. By the appropriate selection of this spatial period, a velocity match between the modulating and optical systems is simulated.

    Abstract translation: 一对相同光波导（11,12）之间的耦合效率由行进电波（14,15）调制。 由于光学和调制系统的传播常数不相等，它们之间的相互作用被限制在沿着光波路径的周期性间隔。 通过对该空间周期的适当选择，模拟调制和光学系统之间的速度匹配。

    Optical interconnect arrangement
    6.
    发明授权
    Optical interconnect arrangement 失效
    光互连装置

    公开(公告)号：US5009477A

    公开(公告)日：1991-04-23

    申请号：US350962

    申请日：1989-05-12

    Applicant: Rodney C. Alferness ,  Zigmantas L. Budrikis ,  David W. Hagelbarger ,  Herwig W. Kogelnik ,  Arun N. Netravali

    Inventor： Rodney C. Alferness ,  Zigmantas L. Budrikis ,  David W. Hagelbarger ,  Herwig W. Kogelnik ,  Arun N. Netravali

    IPC: G02B6/30 ,  G02B6/12 ,  G02B6/28 ,  G02F1/313 ,  G06E3/00 ,  H04Q3/52 ,  H04Q11/00

    CPC classification number: G06E3/006 ,  G02B6/2804 ,  G02B6/2848 ,  H04Q11/0005 ,  H04Q2011/0049 ,  H04Q2011/0052

    Abstract: An arrangement for butt coupling of waveguide electrooptic plates to form a crossbar switch. The arrangement includes a stack of M splitter plates, each of which routes an injected optical signal to one of N outputs, and a stack of N combiner plates, each of which routes the signal of a selected one of M inputs to a common output. The stack of splitter plates is rotated with respect to the stack of combiner plates and the output signal ports of the splitter plates are coupled to the input signal ports of the combiner plates, so that each output of an splitter plate is connected to a different combiner plate. Within each splitter plate there is a fan-out network of waveguide electrooptic couplers and each coupler, under electric control, routes signals from one input to either one of two outputs. With j levels of such interconnected couplers 2.sup.j output are developed. The combiner plates have an identical architecture but with a signal flow in the reverse direction. Butt coupling of the splitter and combiner plates is achieved by employing splitter and combiner plates of a different crystal cut, by interposing polarization rotation means between two stacks, or by including polarization rotation means within the splitter plates, the combiner plates or both.

    Abstract translation: 用于对接波导电光板以形成交叉开关的布置。 该装置包括一组M个分离器板，每个分配板将注入的光信号路由到N个输出中的一个输出端，以及一组N个组合板，每个组合板将M个输入中选定的一个信号的信号路由到公共输出。 分离板的堆叠相对于组合板的堆叠旋转，并且分离板的输出信号端口耦合到组合板的输入信号端口，使得分离板的每个输出连接到不同的组合器 盘子。 在每个分离板内，有一个波导电光耦合器的扇出网络，每个耦合器在电气控制下，将信号从一个输入传送到两个输出中的任一个。 随着j级的这种互连耦合器2j的输出被开发出来。 组合板具有相同的结构，但具有相反方向的信号流。 分流器和组合板的对接耦合通过采用不同晶体切割的分离器和组合板，通过在两个叠层之间插入偏振旋转装置，或者通过在分离板，组合板或两者内包括偏振旋转装置来实现。

    Electrooptic polarization multiplexer/demultiplexer
    8.
    发明授权
    Electrooptic polarization multiplexer/demultiplexer 失效
    电光偏振复用器/解复用器

    公开(公告)号：US4711515A

    公开(公告)日：1987-12-08

    申请号：US614528

    申请日：1984-05-29

    Applicant: Rodney C. Alferness

    Inventor： Rodney C. Alferness

    IPC: G02F1/01 ,  G02F1/313 ,  H04J14/06 ,  G02B6/10

    CPC classification number: G02F1/3132 ,  H04J14/06 ,  G02F2001/0144 ,  G02F2201/125

    Abstract: An electrooptic polarization multiplexer/demultiplexer incorporates an electrooptic, directional coupler switch structure. The multiplexer/demultiplexer includes a substrate of birefringent, electrooptic material, a pair of phase matched, dielectric waveguides embedded in the substrate and spaced closely together over a distance L (the coupler or device length), a buffer layer of insulating material positioned over the substrate and the pair of electrodes, and a plurality of metallic electrodes positioned on the buffer layer in the vicinity of the waveguides. Electrodes are arranged in a multi-section, reversed .DELTA..beta. configuration. The distance L is selected such that 1.ltoreq.L/1.sub.TE .ltoreq.2 and L/1.sub.TM .ltoreq.0.5, where 1.sub.TE and 1.sub.TM are transfer lengths for the TE and TM modes, respectively.

    Abstract translation: 电光偏振复用器/解复用器包含电光定向耦合器开关结构。 多路复用器/解复用器包括双折射，电光材料的衬底，嵌入在衬底中的一对相位匹配的介质波导，并且在距离L（耦合器或器件长度）上紧密地间隔开，绝缘材料的缓冲层位于 基板和一对电极，以及位于波导附近的缓冲层上的多个金属电极。 电极布置成多部分，反向的DELTA beta配置。 距离L被选择为使得1 / L / 1TE

    Polarization-independent optical directional coupler switch/modulator
    10.
    发明授权
    Polarization-independent optical directional coupler switch/modulator 失效
    偏振无关光学定向耦合器开关/调制器

    公开(公告)号：US4243295A

    公开(公告)日：1981-01-06

    申请号：US77092

    申请日：1979-09-19

    Applicant: Rodney C. Alferness

    Inventor： Rodney C. Alferness

    IPC: G02F1/03 ,  G02F1/313 ,  G02B5/14 ,  G02F1/137

    CPC classification number: G02F1/3132 ,  G02F2201/125 ,  G02F2203/06

    Abstract: Because orthogonally polarized optical waves see unequal electrooptic coefficients and refractive indices for the same applied voltage, it has been difficult to obtain efficient switching of arbitrarily polarized waves. This difficulty is resolved in a reverse .DELTA..beta. directional coupler (10, 11) which employs spatial tapering of the distance between waveguides (D(z)) for efficient through-coupling, and the appropriate choice of effective coupling strengths (s.sub.TE, s.sub.TM) for the two polarizations for efficient cross-coupling.

    Abstract translation: 由于正交偏振光波在相同的施加电压下看到不均匀的电光系数和折射率，所以难以获得任意极化波的有效切换。 在使用波导（D（z））之间的距离的空间渐缩以有效地通过耦合的反向DELTA beta定向耦合器（10,11）中解决这个难题，以及有效耦合强度（sTE，sTM）的适当选择， 对于两个极化有效的交叉耦合。

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