In-phase drive of Mach-Zehnder modulator push-pull electrodes
    41.
    发明公开
    In-phase drive of Mach-Zehnder modulator push-pull electrodes 有权
    冯·马克 - 曾恩德 - 莫斯塔尔·德勒克登(Phanen-Gegentaktansteuerung von Mach-Zehnder-Modulatorelektroden)

    公开(公告)号:EP1467241A1

    公开(公告)日:2004-10-13

    申请号:EP03026664.7

    申请日:2003-11-19

    CPC classification number: G02F1/2257 G02F2201/126

    Abstract: A coupled quantum well Mach-Zehnder modulator that employs a push-pull structure to reduce the modulation voltage. The Mach-Zehnder modulator includes a first arm having a first PIN semiconductor device and a second arm having a second PIN semiconductor device. The intrinsic layers of the PIN devices include a coupled quantum well structure to provide an opposite index of refraction change for different DC bias voltages. An RF signal used to modulate the light beam is applied to the two arms in phase and causes the index of refraction in the intrinsic layers of the two PIN devices to change in opposite directions so that a push-pull type drive is achieved without requiring 180° out-of-phase RF drive signal.

    Abstract translation: 耦合量子阱马赫 - 曾德调制器采用推挽结构来降低调制电压。 马赫 - 策德尔调制器包括具有第一PIN半导体器件的第一臂和具有第二PIN半导体器件的第二臂。 PIN器件的本征层包括耦合的量子阱结构,以为不同的DC偏置电压提供相反的折射率变化。 用于调制光束的RF信号同时施加到两个臂上,并且使两个PIN器件的本征层中的折射率在相反的方向上改变,使得实现推挽式驱动,而不需要180° DEG异相RF驱动信号。

    Modulator und dazugehöriges Verfahren für eine optische Modulation
    42.
    发明公开
    Modulator und dazugehöriges Verfahren für eine optische Modulation 审中-公开
    调制器和调制解调器Verfahrenfüreine optische Modulation

    公开(公告)号:EP1315025A1

    公开(公告)日:2003-05-28

    申请号:EP02026102.0

    申请日:2002-11-22

    Abstract: Bei diesem Modulator (MO) und dem dazugehörigen Verfahren für eine optische Modulation werden in beiden Armen (BR1,BR2) eines Interferometers, deren optische Weglängen sich um eine halbe Lichtwellenlänge unterscheiden, jeweils ein Elektroabsorptionsmodulator vorgesehen (MO1,MO2), die mit Gegentaktspannungen angesteuert werden. Auf diese Weise lassen sich wahlweise eine chirparme Amplitudenumtastung und eine chirparme Phasenumtastung realisieren bei äußerst kleinen notwendigen Steuerspannungen.

    Abstract translation: 该装置具有施加第一光信号(OS1)的调制器输入端; 信号被分成(Y1)到第一和第二干涉仪臂(BR1,2)和组合(Y2),以在离开臂之后形成第二光信号。 第一或第二干涉仪臂包含至少一个第一或第二调制装置(MO1,2)。 在第一或第二干涉仪臂中设置吸收调制器作为调制装置。 AN独立权利要求还包括以下内容:光学调制方法。

    INTEGRATED OPTIC MODULATOR WITH SMOOTH ELECTRO-OPTIC BANDPASS CHARACTERISTICS
    43.
    发明授权
    INTEGRATED OPTIC MODULATOR WITH SMOOTH ELECTRO-OPTIC BANDPASS CHARACTERISTICS 失效
    带缓和电光带通特性集成光学调制器

    公开(公告)号:EP0619031B1

    公开(公告)日:1997-04-16

    申请号:EP93900880.1

    申请日:1992-12-04

    CPC classification number: G02F1/225 G02F1/035 G02F2201/126

    Abstract: An optic intensity modulator includes a substrate (10) of an optic material that is conductive to light and acoustic waves and has both the electro-optic and piezoelectric properties. The optical modulator generally consists of a Mach-Zender interferometer comprising a pair of associated elongated light waveguides (11, 12) formed in the substrate, with the waveguides extending substantially coextensively with one another, and being separated from one another by a transverse distance that gradually varies along the courses of the waveguides. Different phase shifts are induced by imposing variable electric fields onto each of the waveguides by means of electrodes (21, 22, 23). Because of the varying spacing between the waveguides along their courses, the tendency of the acoustic waves that are generated during the operation of the modulator due to the piezoelectric effect to resonate between the waveguides at certain frequencies, is eliminated thus reducing the corresponding noise distortion.

    INTEGRATED OPTIC MODULATOR WITH SMOOTH ELECTRO-OPTIC BANDPASS CHARACTERISTICS
    44.
    发明公开
    INTEGRATED OPTIC MODULATOR WITH SMOOTH ELECTRO-OPTIC BANDPASS CHARACTERISTICS 失效
    带缓和电光带通特性集成光学调制器。

    公开(公告)号:EP0619031A1

    公开(公告)日:1994-10-12

    申请号:EP93900880.0

    申请日:1992-12-04

    CPC classification number: G02F1/225 G02F1/035 G02F2201/126

    Abstract: Un modulateur d'intensité optique comprend un substrat (10) d'un matériau optique conducteur de la lumière et des ondes acoustiques, et possède à la fois des propriétés électro-optiques et piézoélectriques. Le modulateur optique se compose généralement d'un interféromètre Mach-Zender comprenant une paire de guides d'ondes lumineux, allongés, combinés (11, 12) formés dans le substrat, ces guides d'ondes s'étendant pratiquement sur une même étendue les uns par rapport aux autres, et se trouvant séparés les uns des autres d'une distance transversale qui varie graduellement le long de leurs déplacements. Des décalages de phase différents sont induits en imposant des champs électriques variables sur chacun des guides d'ondes au moyen d'électrodes (21, 22, 23). Du fait de l'écartement variable des guides d'ondes le long de leurs déplacements, la tendance des ondes acoustiques, générées lors du fonctionnement du modulateur par l'effet piézoélectrique, à résonner entre les guides d'ondes à certaines fréquences, est éliminée, réduisaant ainsi la distorsion de bruit correspondante.

    NESTED MACH-ZEHNDER MODULATOR
    45.
    发明申请
    NESTED MACH-ZEHNDER MODULATOR 审中-公开
    NESTED MACH-ZEHNDER调制器

    公开(公告)号:WO2011087940A2

    公开(公告)日:2011-07-21

    申请号:PCT/US2011/020203

    申请日:2011-01-05

    Abstract: An apparatus includes an optical splitter, an optical intensity combiner, first and second Mach-Zehnder interferometers, and first and second drive electrodes. The first Mach-Zehnder interferometer connects a first optical output of the optical intensity splitter to a first optical input of the optical intensity combiner. The second Mach- Zehnder interferometer connects a second optical output of the optical intensity splitter to a second optical input of the optical intensity combiner. The first drive electrode is located between and connected to a pair of semiconductor junctions along first internal optical arms of the Mach-Zehnder interferometers. The second drive electrode is located between and connected to a pair of semiconductor junctions along second internal optical arms of the Mach-Zehnder interferometers.

    Abstract translation: 一种装置包括光分路器,光强度组合器,第一和第二马赫 - 策德尔干涉仪以及第一和第二驱动电极。 第一马赫 - 策德尔干涉仪将光强度分离器的第一光输出连接到光强度组合器的第一光输入端。 第二马赫 - 策德尔干涉仪将光强度分离器的第二光输出连接到光强度组合器的第二光输入端。 第一驱动电极位于沿着Mach-Zehnder干涉仪的第一内部光学臂的一对半导体结之间并连接到它们之间。 第二驱动电极位于沿着Mach-Zehnder干涉仪的第二内部光学臂的一对半导体结之间并与之连接。

    OPTICAL MODULATOR
    46.
    发明申请
    OPTICAL MODULATOR 审中-公开
    光学调制器

    公开(公告)号:WO2008118288A1

    公开(公告)日:2008-10-02

    申请号:PCT/US2008/003215

    申请日:2008-03-11

    CPC classification number: G02F1/225 G02F1/015 G02F2001/0155 G02F2201/126

    Abstract: A driving circuit and Mach-Zehnder EAM optical modulator exhibiting negligible chirp that generates a PSK signal when driven by a single drive signal. Two such Mach-Zehnder EAM optical modulators and drive circuits may be configured in parallel, thereby generating DQPSK signals with only two drive signals, one for each individual Mach-Zehnder EAM modulator.

    Abstract translation: 驱动电路和马赫 - 曾德EAM光调制器显示出可忽略的啁啾,当由单个驱动信号驱动时产生PSK信号。 两个这样的Mach-Zehnder EAM光调制器和驱动电路可以并联配置,从而产生仅具有两个驱动信号的DQPSK信号,每个单独的Mach-Zehnder EAM调制器一个。

    OPTICAL DUOBINARY TRANSMITTER AND METHOD
    47.
    发明申请
    OPTICAL DUOBINARY TRANSMITTER AND METHOD 审中-公开
    光学二手发射机和方法

    公开(公告)号:WO2005004358B1

    公开(公告)日:2005-03-24

    申请号:PCT/IL2004000594

    申请日:2004-07-04

    Abstract: There is provided an optical duobinary (ODB) transmission system, including a duobinary precoder receiving data signals and converting the signals into first and second different digital signals each composed of two level voltages; a duobinary encoder fed by the precoder for converting the digital signals into three level analog signals, and a close loop control circuit for maintaining equal drive voltages for driving a Mach Zehnder Modulator (MZM). A method of encoding NRZ data for optical duobinary (ODB) transmission is also provided.

    Abstract translation: 提供了一种光双向(ODB)传输系统,包括二进制预编码器接收数据信号并将信号转换成每个由两个电平电压构成的第一和第二不同的数字信号; 由预编码器馈送的用于将数字信号转换为三电平模拟信号的双二进制编码器,以及用于维持用于驱动马赫曾德调制器(MZM)的相等驱动电压的闭环控制电路。 还提供了一种编码用于光学双二进制(ODB)传输的NRZ数据的方法。

    METHOD FOR CONTROLLING AN OPTOELECTRONIC COMPONENT
    48.
    发明申请
    METHOD FOR CONTROLLING AN OPTOELECTRONIC COMPONENT 审中-公开
    控制光电元件的方法

    公开(公告)号:WO2004023196A1

    公开(公告)日:2004-03-18

    申请号:PCT/FI2003/000649

    申请日:2003-09-04

    CPC classification number: G02F1/2257 G02F1/0147 G02F1/3133 G02F2201/126

    Abstract: A method for controlling an optoelectronic component that includes two waveguides (3 and 4). The refractive index of the first waveguide (3) is changed periodically with a first control signal (1), the amplitude of which is changed between a first amplitude level (I) and higher second amplitude level (II). The refractive index of the second waveguide (4) is changed periodically with a second control signal (2), the amplitude of which is changed between the aforementioned first amplitude level (I) and a lower third amplitude level (III). When the control signals are on their common first amplitude level (I), the refractive indices of the waveguides are equal and the phase difference between them is zero. When the first control signal is on the second amplitude level (II) and the second control signal on the third amplitude level (III), the refractive indices of the waveguides are unequal so that their mutual phase difference has a predetermined target value. For accelerating a phase-difference change both control signals are adjusted during both the rise and the fall time periods simultaneously so that their combined effect leads to a very fast phase difference change, which settles already before the refractive indices of the waveguides are settled.

    Abstract translation: 一种用于控制包括两个波导(3和4)的光电子部件的方法。 第一波导管(3)的折射率以第一控制信号(1)周期性地改变,第一控制信号(1)的振幅在第一幅度电平(I)和较高的第二幅度电平(II)之间变化。 第二波导(4)的折射率以第二控制信号(2)周期性地改变,第二控制信号(2)的振幅在上述第一振幅电平(I)和较低的第三振幅电平(III)之间变化。 当控制信号处于共同的第一幅度电平(I)时,波导的折射率相等,它们之间的相位差为零。 当第一控制信号处于第二幅度电平(II)和第三幅度电平(III)上的第二控制信号时,波导的折射率不相等,使得它们的相位差具有预定的目标值。 为了加速相位差变化,两个控制信号在上升和下降时间周期期间同时被调节,使得它们的组合效应导致非常快的相位差变化,其在波导的折射率已经稳定之前已经结束。

    熱ドリフトを効果的に抑圧して優れた電気的特性を有する光変調デバイス及びその製造方法
    49.
    发明申请
    熱ドリフトを効果的に抑圧して優れた電気的特性を有する光変調デバイス及びその製造方法 审中-公开
    通过有效限制热量转移的具有优异电特性的光调制装置

    公开(公告)号:WO2002097521A1

    公开(公告)日:2002-12-05

    申请号:PCT/JP2002/005008

    申请日:2002-05-23

    CPC classification number: G02F1/2255 G02F1/225 G02F2201/126 G02F2203/21

    Abstract: An optical waveguide that guides an incident light is formed on an a substrate having an electro−optical effect. A first buffer layer is formed so as to cover the top surface of the substrate. A conductive film is formed above the first buffer layer. A center electrode and a groung electrode are formed to apply voltage to the optical waveguide so as to induce an electric field therein. A second buffer layer is formed between the conductive film and at least one of the center electrode and the ground electrode. The conductive film is so formed as to exist at least a part of and below the ground electrode. Light guided along the optical waveguide is modulated by having the phase thereof changed by voltage applied to the optical waveguide. Accordingly, an optical modulation device is provided that has an excellent electric characteristics by effectively restricting heat drift.

    Abstract translation: 在具有电光效应的基板上形成引导入射光的光波导。 形成第一缓冲层以覆盖基板的顶表面。 导电膜形成在第一缓冲层上方。 形成中心电极和浓缩电极,以向光波导施加电压,从而在其中引起电场。 在导电膜和至少一个中心电极和接地电极之间形成第二缓冲层。 导电膜形成为在接地电极的至少一部分和下方存在。 通过使其相位被施加到光波导的电压而改变,沿着光波导引导的光被调制。 因此,提供了通过有效地限制热漂移而具有优异的电特性的光调制装置。

    OPTICAL MODULATOR USING SIMULTANEOUS PUSH-PULL DRIVE OF LINEAR AND QUADRATIC ELECTRO-OPTIC EFFECTS
    50.
    发明申请
    OPTICAL MODULATOR USING SIMULTANEOUS PUSH-PULL DRIVE OF LINEAR AND QUADRATIC ELECTRO-OPTIC EFFECTS 审中-公开
    光学调制器使用同步推挽式线性和二次电光效应

    公开(公告)号:WO0223257A3

    公开(公告)日:2002-06-13

    申请号:PCT/US0128785

    申请日:2001-09-14

    CPC classification number: G02F1/2257 G02F2201/126

    Abstract: An electro-optic push-pull modulator requiring reduced high switching voltages through combinations of device structure and operation, causing linear and quadratic electro-optic effects to add. Such combinations of device structure and operation include combinations of crystal axis orientation, waveguide structure, electrode structure, electric field biasing, operating wavelengths, and optical polarizations. By inducing linear and quadratic electro-optic effects to add, significant refractive index changes can be realized with lower switching voltages, V pi . Furthermore, significant reduction in switching voltage for push-pull modulators can also be realized through combinations of device structure and operation effectively inducing solely the quadratic electro-optic effect.

    Abstract translation: 电光推挽调制器需要通过器件结构和操作的组合来降低高开关电压,从而导致线性和二次电光效应的增加。 器件结构和操作的这种组合包括晶轴取向,波导结构,电极结构,电场偏置,工作波长和光学偏振的组合。 通过诱导线性和二次电光效应进行相加,可以用较低的开关电压V pi实现显着的折射率变化。 此外,还可以通过器件结构和有效地仅引起二次电光效应的操作的组合来实现推挽调制器的开关电压的显着降低。

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