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    • 1. 发明申请
    • OPTICAL POWER MONITOR
    • 光功率监视器
    • WO0245299A3
    • 2002-08-01
    • PCT/GB0105309
    • 2001-11-30
    • ALCATEL OPTRONICS UK LTDKYMATA NETHERLANDS B VLAMING RICHARD IANVAN WEERDEN HARM
    • LAMING RICHARD IANVAN WEERDEN HARM
    • G01J3/28G01K17/00G02B6/12G02B6/122G02B6/34H04B10/08
    • G02B6/12016G01J3/28G01K17/003G02B6/12004G02B6/12019G02B6/1228G02B2006/12195
    • An optical power monitor comprises: an array waveguide grating comprising first and second optical interaction regions between which an input optical signal propagates from a first position on a first side of the first optical interaction region to a second position on a second side of the second optical interaction region, a correspondence between said first and second positions depending upon a wavelength of the optical signal, there being a plurality of array waveguides coupled between a second side of the first optical interaction region and a first side of the second optical interaction region, and a plurality of output waveguides coupled at one end to the second side of the second optical interaction region for outputting different wavelength channel outputs from the second optical interaction region; and detectors for detecting said different wavelength channel outputs at the other ends of the output waveguides; wherein the plurality of output waveguides include at least two output waveguides for at least one of the wavelength channels.
    • 光功率监视器包括:阵列波导光栅,包括第一和第二光学相互作用区域,输入光信号在第一和第二光学相互作用区域之间从第一光学相互作用区域的第一侧上的第一位置传播到第二光学相互作用区域的第二侧上的第二位置 所述第一和第二位置之间的对应关系取决于所述光信号的波长,存在耦合在所述第一光学相互作用区域的第二侧和所述第二光学相互作用区域的第一侧之间的多个阵列波导,以及 多个输出波导在一端耦合到第二光学相互作用区域的第二侧,用于从第二光学相互作用区域输出不同的波长信道输出; 以及检测器,用于在输出波导的另一端检测所述不同波长信道输出; 其中所述多个输出波导包括用于所述波长通道中的至少一个的至少两个输出波导。
    • 2. 发明申请
    • DISPERSIVE OPTICAL DEVICE
    • 分散的光学设备
    • WO0218988A3
    • 2002-06-06
    • PCT/GB0103925
    • 2001-08-31
    • ALCATEL OPTRONICS UK LTDLAMING RICHARD IAN
    • LAMING RICHARD IAN
    • G02B6/34G02F1/01G02F1/065G02B6/28
    • G02B6/12014G02B6/12026G02B6/12028G02B6/12033G02F1/0147G02F1/065
    • A dispersive optical device comprises an input optical coupler (20''); an input waveguide (10'') arranged to launch light into the input optical coupler at a launching position with respect to the input optical coupler; an output optical coupler; one or more output waveguides arranged to receive light from the output optical coupler; and a plurality of transmission waveguides (30'') arranged to receive light from the input optical coupler and direct it to the output optical coupler, the transmission waveguides generally converging towards the input optical coupler so that optical paths through the input optical coupler, which follow the axes of the transmission waveguides at their interface with the input optical coupler, intersect at an intersection point; in which the launching point is displaced from the intersection point in the direction of the axes of the input waveguide.
    • 分散光学装置包括输入光耦合器(20“); 输入波导(10“),布置成在相对于输入光耦合器的发射位置处将光发射到输入光耦合器中; 输出光耦合器; 布置成从输出光耦合器接收光的一个或多个输出波导; 以及多个传输波导(30“),其布置成接收来自所述输入光耦合器的光并将其引导到所述输出光耦合器,所述传输波导通常朝向所述输入光耦合器会聚,使得通过所述输入光耦合器的光路,其中 沿着与输入光耦合器的接口处的传输波导的轴线在交点处相交; 其中发射点在输入波导的轴线方向上从交点移位。
    • 5. 发明申请
    • MEMS TRANSDUCERS
    • MEMS传感器
    • WO2009136196A3
    • 2010-06-24
    • PCT/GB2009050473
    • 2009-05-07
    • WOLFSON MICROELECTRONICS PLCMCMULLEN ROBERT ERROLLAMING RICHARD IANTRAYNOR ANTHONY BERNARDHOEKSTRA TSJERK HANS
    • MCMULLEN ROBERT ERROLLAMING RICHARD IANTRAYNOR ANTHONY BERNARDHOEKSTRA TSJERK HANS
    • B06B1/02
    • B06B1/0292
    • A MEMS device comprises a substrate having at least a first transducer optimized for transmitting pressure waves, and at least a second transducer optimized for detecting pressure waves. The transducers can be optimised for transmitting or receiving by varying the diameter, thickness or mass of the membrane and/or electrode of each respective transducer. Various embodiments are described showing arrays of transducers, with different configurations of transmitting and receiving transducers. Embodiments are also disclosed having an array of transmitting transducers and an array of receiving transducers, wherein elements in the array of transmitting and /or receiving transducers are arranged to have different resonant frequencies. At least one of said first and second transducers may comprise an internal cavity that is sealed from the outside of the transducer.
    • MEMS器件包括具有至少第一传感器的衬底,该第一传感器优化用于传送压力波,以及至少第二传感器,其优化用于检测压力波。 可以通过改变每个相应换能器的膜和/或电极的直径,厚度或质量来优化传感器的传播或接收。 描述了各种实施例,其示出了具有不同配置的发射和接收换能器的换能器阵列。 还公开了具有发射换能器阵列和接收换能器阵列的实施例,其中发射和/或接收换能器阵列中的元件布置成具有不同的谐振频率。 所述第一和第二换能器中的至少一个可以包括从换能器的外部密封的内部空腔。
    • 6. 发明申请
    • METHOD FOR FABRICATING A MEMS MICROPHONE
    • 制造MEMS麦克风的方法
    • WO2007107736A3
    • 2009-09-11
    • PCT/GB2007000972
    • 2007-03-20
    • WOLFSON MICROELECTRONICS PLCLAMING RICHARD IANBEGBIE MARKTRAYNOR ANTHONY
    • LAMING RICHARD IANBEGBIE MARKTRAYNOR ANTHONY
    • B81C1/00
    • B81C1/00158B81B2201/0257B81B2203/0127B81C99/004B81C2201/0109H04R7/10H04R7/18H04R19/005H04R2307/207Y10S977/733
    • A MEMS device, for example a capacitive microphone, comprises a flexible membrane (11) that is free to move in response to pressure differences generated by sound waves. A first electrode (13) is mechanically coupled to the flexible membrane (11), and together form a first capacitive plate of the capacitive microphone device. A second electrode (23) is mechanically coupled to a generally rigid structural layer or back-plate (14), which together form a second capacitive plate of the capacitive microphone device. The capacitive microphone is formed on a substrate (1), for example a silicon wafer. A back- volume (33) is provided below the membrane (11), and is formed using a 'back-etch' through the substrate (1). A first cavity (9) is located directly below the membrane (11), and is formed using a first sacrificial layer during the fabrication process. Interposed between the first and second electrodes (13 and 23) is a second cavity (17), which is formed using a second sacrificial layer during the fabrication process. A plurality of bleed holes (15) connect the first cavity (9) and the second cavity (17). Acoustic holes (31) are arranged in the back-plate (14) so as to allow free movement of air molecules, such that the sound waves can enter the second cavity (17). The first and second cavities (9 and 17) in association with the back-volume (33) allow the membrane (11) to move in response to the sound waves entering via the acoustic holes (31) in the back-plate (14). The provision of first and second sacrifjciaj layers has the advantage of protecting the membrane during manufacture, and disassociating the back etch process from the definition of the membrane. The bleed holes (15) aid with the removal of the first and second sacrificial layers. The bleed holes (15) also contribute to the operating characteristics of the microphone.
    • MEMS器件,例如电容式麦克风,包括响应于由声波产生的压力差而自由移动的柔性膜(11)。 第一电极(13)机械耦合到柔性膜(11),并且一起形成电容式麦克风装置的第一电容板。 第二电极(23)机械地联接到大致刚性的结构层或背板(14),它们一起形成电容式麦克风装置的第二电容板。 电容式麦克风形成在基板(1)上,例如硅晶片上。 背部容积(33)设置在膜(11)下方,并且通过基板(1)的“背蚀刻”形成。 第一腔(9)位于膜(11)的正下方,并且在制造过程中使用第一牺牲层形成。 介于第一和第二电极(13和23)之间的是在制造过程中使用第二牺牲层形成的第二腔体(17)。 多个排放孔(15)连接第一腔(9)和第二腔(17)。 声孔(31)布置在背板(14)中以便允许空气分子的自由移动,使得声波可以进入第二腔(17)。 与背容积(33)相关联的第一和第二空腔(9和17)允许膜(11)响应于通过背板(14)中的声孔(31)进入的声波而移动, 。 提供第一和第二牺牲层具有在制造期间保护膜的优点,以及使背蚀刻工艺与膜的定义分离。 排放孔(15)有助于去除第一和第二牺牲层。 排放孔(15)也有助于麦克风的操作特性。
    • 10. 发明申请
    • OPTICAL DEVICE
    • 光学器件
    • WO9834138A3
    • 1998-11-12
    • PCT/GB9800293
    • 1998-01-30
    • UNIV SOUTHAMPTONFARWELL SELINA GAILLAMING RICHARD IANZERVAS MICHAEL NICKOLAOSCULVERHOUSE DAVID
    • FARWELL SELINA GAILLAMING RICHARD IANZERVAS MICHAEL NICKOLAOSCULVERHOUSE DAVID
    • G02B6/28G02F1/01G02B6/287G02F1/335
    • G02B6/2835G02F1/0134
    • An optical fibre device comprising an optical fibre coupler formed of two or more optical fibres fused together at a coupling region, at least a part of the coupling region being asymmetrical across its cross section. In summary, at least preferred embodiments of the invention provide a method of manufacturing polarisation insensitive couplers is achieved in asymmetric couplers by precisely controlling the cross-sectional shape. The shape required will depend on the extent of the dissimilarity between the input waveguides and possibly the size of the waveguide. The four-fold symmetry in the present couplers is broken either by the two input waveguides having different outer dimension and/or any other fibre parameter. The fibre parameters differing in the two input waveguides could be any of (a) outer cladding dimension, (b) cladding refractive index, (c) numerical aperture and (d) code dimension. A method of manufacturing an asymmetric coupler by progressive stretching, wherein the birefringence in the coupler resulting from the progressive stretching is substantially removed by precise control of the waist cross-sectional shape. Particular attention must be paid to the temperature distribution along the stretched region of glass in order to fabricate couplers with a uniform degree of fusion along their length.
    • 一种光纤装置,包括由在耦合区域熔合在一起的两个或多个光纤形成的光纤耦合器,耦合区域的至少一部分在其横截面上是不对称的。 总之,本发明的至少优选实施例提供了一种制造偏振不敏感耦合器的方法,其通过精确地控制横截面形状而在非对称耦合器中实现。 所需的形状将取决于输入波导之间的不相似程度以及可能的波导尺寸。 通过具有不同外部尺寸和/或任何其他光纤参数的两个输入波导来破坏本耦合器中的四重对称性。 两个输入波导中不同的光纤参数可以是(a)外包层尺寸,(b)包层折射率,(c)数值孔径和(d)代码尺寸中的任何一个。 一种通过渐进拉伸制造不对称耦合器的方法,其中由渐进拉伸产生的耦合器中的双折射基本上通过精确控制腰部横截面形状而消除。 必须特别注意沿玻璃拉伸区域的温度分布,以便制造沿其长度具有均匀融合度的耦合器。