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    Optical signal scrambling
    94.
    发明授权
    Optical signal scrambling 失效
    光信号加扰

    公开(公告)号：US06333808B1

    公开(公告)日：2001-12-25

    申请号：US09559656

    申请日：2000-04-28

    Applicant: Stephen Michael Webb ,  Ian Haxell

    Inventor： Stephen Michael Webb ,  Ian Haxell

    IPC: G02F100

    CPC classification number: H04B10/505 ,  G02F1/0136 ,  G02F2001/0139 ,  G02F2201/17 ,  H04B10/506

    Abstract: An optical signal scrambler (18) has an optical phase modulator (22) which has a common input/output for an optical signal. The modulator also has an input for a modulating signal and a common output/input which is coupled to a 45° Faraday mirror (24). The scrambler (18) operates to modify an optical input signal received at the input/output of the modulator (22) so that it is returned as an output which is phase scrambled.

    Abstract translation: 光信号加扰器（18）具有光相位调制器（22），其具有用于光信号的公共输入/输出。 调制器还具有用于调制信号的输入端和耦合到45°法拉第镜（24）的公共输出/输入端。 加扰器（18）操作以修改在调制器（22）的输入/输出处接收的光输入信号，使得其作为相位加扰的输出返回。

    High-speed electro-optic modulator
    95.
    发明授权
    High-speed electro-optic modulator 失效
    高速电光调制器

    公开(公告)号：US06330097B1

    公开(公告)日：2001-12-11

    申请号：US09288439

    申请日：1999-04-08

    Applicant: Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

    Inventor： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

    IPC: G02B2600

    CPC classification number: G02F1/055 ,  G02F1/0555 ,  G02F1/0556 ,  G02F2201/17 ,  G02F2203/06 ,  G02F2203/48

    Abstract: An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A recombiner causes the two rays to recombine at an output unless an electro-optic phase retarder changes the polarization of the two rays, in which case, both of them miss the output by an amount which is a function of the voltage on the retarder. A normally-off version with low polarization mode dispersion is obtained by changing the orientation of the recombiner. A normally-on version with low polarization mode dispersion is obtained with a passive polarization direction rotator. Similar results can be obtained in a reflection mode where the input and output are on the same side of the modulator. Versions using a GRIN lens are particularly suited to modulation of light out of and back into fiber-optic cables. The device can be operated as a variable optical attenuator, an optical switch, or a high speed modulator and is insensitive to polarization of the input light. A preferred material for the phase retarder is a hot-pressed ceramic lead lanthanum zirconate titanate composition.

    Abstract translation: 提供光调制器以控制透射或反射光的强度。 在透射模式中，分离器将任意偏振光分离成两个偏振光，一个偏振光从另一个行进。 重组器会导致两条射线在输出端重新组合，除非电光相位延迟器改变两个射线的极化，在这种情况下，它们都将输出误差减去延迟器上的电压的函数。 通过改变重组器的取向，获得具有低偏振模色散的常关型。 使用无源偏振方向旋转器获得具有低偏振模色散的常导版本。 在输入和输出位于调制器的同一侧的反射模式下可以获得类似的结果。 使用GRIN镜头的版本特别适用于调制光纤到光纤的光纤。 该器件可以作为可变光衰减器，光开关或高速调制器操作，并且对输入光的偏振不敏感。 用于相缓凝剂的优选材料是热压陶瓷铅锆酸镧锆酸盐组合物。

    Fiberoptic liquid crystal on-off switch and variable attenuator
    96.
    发明授权
    Fiberoptic liquid crystal on-off switch and variable attenuator 失效
    光纤液晶开关和可变衰减器

    公开(公告)号：US06181846B2

    公开(公告)日：2001-01-30

    申请号：US09340858

    申请日：1999-06-28

    Applicant: Jing-Jong Pan

    Inventor： Jing-Jong Pan

    IPC: G02B626

    CPC classification number: G02B6/2726 ,  G02B6/266 ,  G02B6/2773 ,  G02F1/1326 ,  G02F1/21 ,  G02F2201/17 ,  G02F2203/48

    Abstract: A fiberoptic liquid crystal on-off switch and variable attenuator is provided. The end facets of two optical fiber cores in a sleeve, a birefringent crystal, a quarter-pitch GRIN lens, a liquid crystal cell and a mirror element are arranged and oriented with respect to each other so that light from the first optical fiber core passes through, and back from, the first birefringent crystal, the GRIN lens, the liquid crystal cell and the mirror element into the second optical fiber core when the liquid crystal cell is in a first state. When the liquid crystal cell is in an opposite second state, light from the first optical fiber core passes through, and back from, the first birefringent crystal, the GRIN lens, the liquid crystal cell and the mirror element, but not into the second optical fiber core. If voltages intermediate to those corresponding to the On and Off states are applied to the liquid crystal cell, the amount of light passing between the first and second optical fiber cores are proportionally controlled and the device operates as an attenuator.

    Abstract translation: 提供光纤液晶开关和可变衰减器。 袖子中的两个光纤芯的端面，双折射晶体，四分之一节距GRIN透镜，液晶单元和反射镜元件相对于彼此布置和取向，使得来自第一光纤芯的光通过 当液晶单元处于第一状态时，通过第一双折射晶体，GRIN透镜，液晶单元和反射镜元件进入第二光纤芯。 当液晶单元处于相反的第二状态时，来自第一光纤芯的光从第一双折射晶体，GRIN透镜，液晶单元和反射镜元件通过并返回到第二光纤 纤维芯。 如果将对应于On和Off状态的电压中间的电压施加到液晶单元，则成比例地控制在第一和第二光纤芯之间通过的光量，并且该器件作为衰减器工作。

    High-speed electro-optic modulator
    97.
    发明授权
    High-speed electro-optic modulator 有权

    公开(公告)号：US6137619A

    公开(公告)日：2000-10-24

    申请号：US158224

    申请日：1998-09-22

    Applicant: Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao

    Inventor： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao

    IPC: G02F1/055 ,  G02F1/03

    CPC classification number: G02F1/055 ,  G02F1/0555 ,  G02F1/0556 ,  G02F2201/17 ,  G02F2203/06 ,  G02F2203/48

    Abstract: An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A recombiner causes the two rays to recombine at an output unless an electro-optic phase retarder changes the polarization of the two rays, in which case, both of them miss the output by an amount which is a function of the voltage on the retarder. A normally-off version with low polarization mode dispersion is obtained by changing the orientation of the recombiner. A normally-on version with low polarization mode dispersion is obtained with a passive polarization direction rotator. Similar results can be obtained in a reflection mode where the input and output are on the same side of the modulator. Versions using a GRIN lens are particularly suited to modulation of light out of and back into fiber-optic cables. The device can be operated as a variable optical attenuator, an optical switch, or a high speed modulator and is insensitive to polarization of the input light. A preferred material for the phase retarder is a hot-pressed ceramic lead lanthanum zirconate titanate composition.

    RING WAVEGUIDE MODULATORS
    98.
    发明申请
    RING WAVEGUIDE MODULATORS 审中-公开

    公开(公告)号：US20180210241A1

    公开(公告)日：2018-07-26

    申请号：US15745712

    申请日：2015-07-23

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Mir Ashkan SEYEDI ,  Chin-Hui CHEN

    IPC: G02F1/01 ,  G02F1/025

    CPC classification number: G02F1/0147 ,  G02B6/287 ,  G02F1/025 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2203/05 ,  G02F2203/15

    Abstract: In one example, a device includes a bus waveguide to carry a light of a carrier wavelength, a first ring waveguide with a first modulator, a first heater to adjust a resonance wavelength of the first ring waveguide, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate the light of the carrier wavelength to impart one of at least four optical power levels to the light. In another example, a device includes, a bus waveguide, a first ring waveguide with a first modulator, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate a light of a carrier wavelength to impart one of at least four optical power levels to the light.

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