A polarization independent light switching device based on liquid crystal
    1.
    发明公开
    A polarization independent light switching device based on liquid crystal 有权
    PolarisationsunabhängigerLichtschalter auf der Basis vonFlüssigkristallwellenleitern

    公开(公告)号:EP1061406A2

    公开(公告)日:2000-12-20

    申请号:EP00111581.5

    申请日:2000-05-30

    IPC分类号: G02F1/21

    摘要: A light guiding element[300]for routing alight signal between an input port[301] and an output port or for blocking the propagation of the fight signal between the input and output ports depending on the state of the switching element. The guiding element utilizes a beam splitter[310] for separating the input light signal into physically separated first and second polarized light signals, the first light signal having a polarization that is orthogonal to that of the second light signal. A first polarization rotator[309] rotates the polarization of the first light signal such that the polarization of the first light signal is parallel to that of the second light signal. A first waveguide[331] having first and second states operates on the first light signal such that the first waveguide[331] guides the first light signal along a predetermined path in the first state while not guiding the first light signal in the second state. A second waveguide[332] having first and second states operates on the second light signal such that the second waveguide[332] guides the second light signal along a predetermined path in the first state while not guiding the second light in the second state. A second polarization rotator[317] rotates the polarization of the second light signal such that the polarization of the second light signal is orthogonal to that of the first light signal. A beam combiner[318] then combines the first and second light signals and couples the same to the output light port.

    摘要翻译: 导光元件,用于根据切换元件的状态,在输入端口和输出端口之间布线信号信号,或阻止输入端口和输出端口之间的信号传播。 引导元件利用分束器1773将用于将输入光信号分离为物理分离的第一和第二偏振光信号,第一光信号具有与第二光信号的偏振正交的偏振。 第一偏振旋转器旋转第一光信号的偏振,使得第一光信号的偏振与第二光信号的偏振平行。 具有第一和第二状态的第一波导23133具有第一光信号的作用,使得第一波导在第一状态下沿着预定路径引导第一光信号,而在第二状态下不引导第一光信号。 具有第一和第二状态的第二波导管313对第二光信号进行操作,使得第二波导管313在第一状态下沿着预定路径引导第二光信号,而在第二状态下不引导第二光。 第二偏振旋转器313a将旋转第二光信号的偏振,使得第二光信号的偏振与第一光信号的偏振正交。 然后,光束组合器313a组合第一和第二光信号并将其耦合到输出光端口。

    A polarization independent light switching device based on liquid crystal
    2.
    发明公开
    A polarization independent light switching device based on liquid crystal 有权
    PolarisationsunabhängigerLichtschalter auf der Basis vonFlüssigkristallen

    公开(公告)号:EP1061406A3

    公开(公告)日:2004-01-28

    申请号:EP00111581.5

    申请日:2000-05-30

    IPC分类号: G02F1/21 G02F1/1333

    摘要: A light guiding element[300]for routing alight signal between an input port[301] and an output port or for blocking the propagation of the fight signal between the input and output ports depending on the state of the switching element. The guiding element utilizes a beam splitter[310] for separating the input light signal into physically separated first and second polarized light signals, the first light signal having a polarization that is orthogonal to that of the second light signal. A first polarization rotator[309] rotates the polarization of the first light signal such that the polarization of the first light signal is parallel to that of the second light signal. A first waveguide[331] having first and second states operates on the first light signal such that the first waveguide[331] guides the first light signal along a predetermined path in the first state while not guiding the first light signal in the second state. A second waveguide[332] having first and second states operates on the second light signal such that the second waveguide[332] guides the second light signal along a predetermined path in the first state while not guiding the second light in the second state. A second polarization rotator[317] rotates the polarization of the second light signal such that the polarization of the second light signal is orthogonal to that of the first light signal. A beam combiner[318] then combines the first and second light signals and couples the same to the output light port.

    摘要翻译: 导光元件,用于根据切换元件的状态,在输入端口和输出端口之间布线信号信号,或阻止输入端口和输出端口之间的信号传播。 引导元件利用分束器1773将用于将输入光信号分离为物理分离的第一和第二偏振光信号,第一光信号具有与第二光信号的偏振正交的偏振。 第一偏振旋转器旋转第一光信号的偏振,使得第一光信号的偏振与第二光信号的偏振平行。 具有第一和第二状态的第一波导23133具有第一光信号的作用,使得第一波导在第一状态下沿着预定路径引导第一光信号,而在第二状态下不引导第一光信号。 具有第一和第二状态的第二波导管313对第二光信号进行操作,使得第二波导管313在第一状态下沿着预定路径引导第二光信号,而在第二状态下不引导第二光。 第二偏振旋转器313a将旋转第二光信号的偏振,使得第二光信号的偏振与第一光信号的偏振正交。 然后,光束组合器313a组合第一和第二光信号并将其耦合到输出光端口。

    Programmable light path device
    3.
    发明公开
    Programmable light path device 审中-公开
    Vorrichtung mit programmierbarem Strahlengang

    公开(公告)号:EP1054288A2

    公开(公告)日:2000-11-22

    申请号:EP00107696.7

    申请日:2000-04-10

    IPC分类号: G02F1/1333 G02F1/313

    CPC分类号: G02F1/1326 G02F1/313

    摘要: A switchable waveguide (200, 250, 300) having first and second states. In the first state, the waveguide (200, 250, 300) guides light of a signal wavelength along a predetermined path. In the second state, no guiding of the light occurs. The waveguide (200, 250, 300) includes a guide layer (110) of a guide material having a first index of refraction in the absence of an electric field and a second index of refraction in the presence of the electric field. The electric field is generated in a portion of the guide layer (110) by applying an appropriate electrical signal to a plurality of electrodes (213, 214, 23, 24, 25, 32, 33, 34) that define a guide region (24, 37, 218) in the guide layer (110). The guide region (24, 37, 218) has an index of refraction that is greater than that of the guide layer (110) in regions adjacent to the guide region (24, 37, 218). The electrodes (213, 214, 23, 24, 25, 32, 33, 34) are separated from the guide region (24, 37, 218) by a distance of at least one-half times the wavelength of the light being guided. The separation is maintained by arranging the electrodes such that the guide region (24, 37,218) is created at a location separated from the electrodes.

    摘要翻译: 具有第一和第二状态的可切换波导(200,250,300)。 在第一状态下,波导(200,250,300)沿预定路径引导信号波长的光。 在第二状态下,不会引起光的引导。 波导(200,250,300)包括导电材料的引导层(110),该引导层在不存在电场的情况下具有第一折射率和在存在电场的情况下具有第二折射率。 通过向限定引导区域(24,24)的多个电极(213,214,23,24,25,33,34)施加适当的电信号,在引导层(110)的一部分中产生电场, ,37,218)。 引导区域(24,37,218)在与引导区域(24,37,218)相邻的区域中的折射率大于引导层(110)的折射率。 电极(213,214,23,24,25,32,33,34)与引导区域(24,37,218)分开距离被引导光的波长的至少一半的距离。 通过布置电极来保持分离,使得在与电极分离的位置处产生引导区域(24,37,218)。

    Programmable light path device
    5.
    发明公开
    Programmable light path device 审中-公开
    设备具有可编程光束路径

    公开(公告)号:EP1054288A3

    公开(公告)日:2002-04-10

    申请号:EP00107696.7

    申请日:2000-04-10

    IPC分类号: G02F1/1333 G02F1/313

    CPC分类号: G02F1/1326 G02F1/313

    摘要: A switchable waveguide (200, 250, 300) having first and second states. In the first state, the waveguide (200, 250, 300) guides light of a signal wavelength along a predetermined path. In the second state, no guiding of the light occurs. The waveguide (200, 250, 300) includes a guide layer (110) of a guide material having a first index of refraction in the absence of an electric field and a second index of refraction in the presence of the electric field. The electric field is generated in a portion of the guide layer (110) by applying an appropriate electrical signal to a plurality of electrodes (213, 214, 23, 24, 25, 32, 33, 34) that define a guide region (24, 37, 218) in the guide layer (110). The guide region (24, 37, 218) has an index of refraction that is greater than that of the guide layer (110) in regions adjacent to the guide region (24, 37, 218). The electrodes (213, 214, 23, 24, 25, 32, 33, 34) are separated from the guide region (24, 37, 218) by a distance of at least one-half times the wavelength of the light being guided. The separation is maintained by arranging the electrodes such that the guide region (24, 37,218) is created at a location separated from the electrodes.