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公开(公告)号：US20240329438A1
公开(公告)日：2024-10-03
申请号：US18576519
申请日：2022-07-26
发明人： Hanxiao LIANG , Yipin SONG , Yingcong ZHOU , Haicang WU , Wenhao MAO , Shiwei SONG , Weiqi SUN , Qingyang YU
CPC分类号： G02F1/0356 , G02F1/0311 , G02F1/0316 , G02F2201/122 , G02F2201/127
摘要： An electro-optic modulator is provided. The electro-optic modulator includes: an optical splitter; a first optical waveguide and a second optical waveguide; traveling wave electrodes including a first grounding electrode, a first signal electrode, a second signal electrode, and a second grounding electrode; extension electrodes including at least one first signal sub-electrode and two second signal sub-electrodes, where the two second signal sub-electrodes are arranged on both sides of the at least one first signal sub-electrode and the first signal electrode is electrically connected to the first signal sub-electrodes, and the second signal electrode is electrically connected to the second signal sub-electrodes.
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公开(公告)号：US20240280846A1
公开(公告)日：2024-08-22
申请号：US18652711
申请日：2024-05-01
发明人： Prashanta Kharel , Mian Zhang , Christian Reimer
CPC分类号： G02F1/0356 , G02B6/125 , G02F1/2255 , G02B2006/12142 , G02F2201/127 , G02F2202/20
摘要： A velocity mismatch between optical signals and microwave electrical signals in electro-optic devices, such as modulators, may be compensated by utilizing different lengths of bends in the optical waveguides as compared to the microwave electrodes to match the velocity of the microwave signal propagating along the coplanar waveguide to the velocity of the optical signal. To ensure the electrode bends do not affect the light in the optical waveguide bends, the electrode may have to be rerouted, e.g. above or below, the optical waveguide layer. To ensure that the pair of optical waveguides have the same optical length, a waveguide crossing may be used to cross the first waveguide through the second waveguide.
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公开(公告)号：US12025865B2
公开(公告)日：2024-07-02
申请号：US17639345
申请日：2020-03-30
发明人： Hanxiao Liang , Yipin Song
CPC分类号： G02F1/0356 , G02F1/0327 , G02F2201/12 , G02F2201/127
摘要： Provided is a distributed optical phase modulator, comprising: a substrate (10); an optical waveguide (20) arranged on the substrate (10); a drive electrode (30) that is arranged on the substrate (10) and comprises a plurality of sub drive electrodes (31) arranged at intervals; and at least one shielding electrode (40), wherein at least some shielding electrodes and the sub drive electrodes (31) are arranged at intervals. The optical waveguide (20) sequentially passes through the sub drive electrodes (31) and the shielding electrodes (40). The length of each part of the drive electrode (30) is far less than the total length of an equivalent traditional modulator, and the drive signal voltage of each part is also far less than the drive signal voltage of the equivalent traditional modulator. In each part of the drive electrode (30), the propagation of an optical signal and the propagation of an electrical signal can be approximately synchronous, even synchronous. The phenomenon of walk-off between the optical signal and the electrical signal is minimized, and the upper limit of a modulation bandwidth is improved. The shielding electrodes (40) are respectively arranged between the sub drive electrodes (31), so that crosstalk between the sub drive electrodes (31) can be shielded, and crosstalk between the sub drive electrodes (31) can be greatly reduced.
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公开(公告)号：US20230384623A1
公开(公告)日：2023-11-30
申请号：US18324022
申请日：2023-05-25
申请人： Axenic Limited
发明人： Rob Walker
IPC分类号： G02F1/01
CPC分类号： G02F1/011 , G02F2202/101 , G02F2202/16 , G02F2201/127
摘要： A travelling wave electro-optic modulator comprising
a substrate;
first and second parallel spaced apart electrode strips arranged on the substrate;
first and second optical waveguides arranged on the substrate, the optical waveguides being positioned between the first and second electrode strips and extending parallel thereto;
the first electrode strip comprising at least one portion extending proximate to the first optical waveguide;
the second electrode strip comprising at least one portion extending proximate to the second optical waveguide;
a semiconductive backplane layer arranged within the substrate and extending between the waveguides; and,
a matched termination connected to the first and second electrode strips, the matched termination comprising
(a) a serpentine electrically conductive strip arranged on the substrate and connecting the first and second electrode strips together; and,
(b) a semiconductive backplane matching element, the backplane matching element comprising a plurality of semiconductive backplane plates connected together by at least one semiconductive backplane arm, the plates and at least one backplane arm being arranged within the substrate, the plates being arranged proximate to the electrode strips such that each electrode strip is capacitively coupled to at least one backplane plate;
the serpentine electrically conductive strip being arranged such that at least a portion of its length is proximate to at least one backplane arm such that the two are electrically coupled together.-
公开(公告)号：US20180351651A1
公开(公告)日：2018-12-06
申请号：US16108857
申请日：2018-08-22
IPC分类号： H04B10/556 , G02F1/225 , H04B10/50 , G02F1/01 , H04B10/54
CPC分类号： H04B10/5561 , G02F1/0123 , G02F1/025 , G02F1/2257 , G02F2001/212 , G02F2201/127 , H04B10/505 , H04B10/5161 , H04B10/541
摘要： A distributed traveling-wave Mach-Zehnder modulator driver having a plurality of modulation stages that operate cooperatively (in-phase) to provide a signal suitable for use in a 100 Gb/s optical fiber transmitter at power levels that are compatible with conventional semiconductor devices and conventional semiconductor processing is described.
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公开(公告)号：US09864215B1
公开(公告)日：2018-01-09
申请号：US15658871
申请日：2017-07-25
申请人： FUJIKURA LTD.
CPC分类号： G02F1/025 , G02F1/2255 , G02F1/2257 , G02F2201/063 , G02F2201/127
摘要： Provided is a substrate-type optical waveguide, having a phase modulation function, (i) in which a reflection of a signal to be inputted via a coplanar line is restrained and (ii) which consumes less power. In a case where the substrate-type optical waveguide is partitioned into a plurality of sections by cross sections orthogonal to a direction in which light propagates through a core, a local capacitance in each of the plurality of sections gradually increases as a distance from an entrance end surface increases.
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公开(公告)号：US09473245B2
公开(公告)日：2016-10-18
申请号：US14389705
申请日：2014-02-28
发明人： Kazuhiro Yamaji , Yasuyuki Yamauchi
CPC分类号： H04B10/501 , G02B6/4213 , G02B6/4214 , G02B6/4265 , G02F1/2255 , G02F2001/212 , G02F2201/127 , G02F2201/58 , G02F2203/20 , G02F2203/60
摘要： An optical module that processes an input optical signal and outputs a processed optical signal is disclosed. The optical module provides a housing and an optical processing device in the housing. The housing provides an optical input port and an optical output port in a first wall thereof in side-by-side arrangement. A third wall of the housing only provides RF terminals. Second and fourth walls of the housing provide DC terminals. Electrical connection between the DC terminals with DC pads on the device is realized through a wiring substrate whose top avoids an optical path from the optical input port to the input port of the device.
摘要翻译： 公开了一种处理输入光信号并输出经处理的光信号的光模块。 光学模块在壳体中提供壳体和光学处理装置。 壳体并排布置在其第一壁中提供光学输入端口和光学输出端口。 外壳的第三个墙壁只提供射频终端。 外壳的第二和第四壁提供直流端子。 通过布线基板实现具有设备上的DC焊盘的DC端子之间的电连接，其布线基板避免了从光输入端口到设备的输入端口的光路。
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公开(公告)号：US09231728B2
公开(公告)日：2016-01-05
申请号：US14324552
申请日：2014-07-07
发明人： Masaki Sugiyama , Seimi Sasaki , Takehito Tanaka
CPC分类号： H04J14/06 , G02F1/0121 , G02F1/2255 , G02F2001/212 , G02F2201/127
摘要： An optical module includes a waveguide substrate having an optical waveguide and electrodes that apply electronic signals to the optical waveguide; a relay substrate disposed adjacently to the waveguide substrate; and a termination substrate disposed sandwiching the waveguide substrate with the relay substrate. The electrodes respectively have a first wiring portion connected from the relay substrate through the waveguide substrate to the termination substrate and a second wiring portion extending from the first wiring portion and branching on the termination substrate. In the second wiring portion, one branched wiring portion has a capacitor and a termination resistor, and another branched wiring portion extends through a bias resistor to a DC electrode on the relay substrate. The second wiring portion is divided into a first group extending in a first direction along the optical waveguide and a second group extending in a direction opposite to the first direction.
摘要翻译： 光学模块包括具有光波导的波导基板和向光波导施加电子信号的电极; 与所述波导基板相邻设置的继电器基板; 以及将所述波导基板与所述中继基板夹持的端接基板。 所述电极分别具有从所述中继基板通过所述波导基板连接到所述端接基板的第一布线部以及从所述第一布线部延伸并在所述端接基板上分支的第二布线部。 在第二布线部分中，一个分支布线部分具有电容器和终端电阻器，另一个分支布线部分通过偏置电阻器延伸到继电器基板上的直流电极。 第二布线部分被分成沿着光波导沿第一方向延伸的第一组和沿与第一方向相反的方向延伸的第二组。
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公开(公告)号：US08792752B2
公开(公告)日：2014-07-29
申请号：US12737301
申请日：2009-07-03
申请人： Ryo Shimizu , Toru Sugamata
发明人： Ryo Shimizu , Toru Sugamata
CPC分类号： G02F1/2255 , G02F1/0356 , G02F2201/122 , G02F2201/127
摘要： Provided is an optical waveguide element module which suppresses reflection of a modulation signal and attenuation of a modulation signal, even when an impedance of a modulation electrode of an optical waveguide element and an impedance of a transmission line for inputting the modulation signal from the external of the optical waveguide element are different from each other. The optical waveguide element module is provided with an optical waveguide element, which has a substrate (1) composed of a material having electro-optical effects, an optical waveguide (2) formed on the substrate, and a modulation electrode (3) which modules optical waves propagating in the optical waveguide; a connector (8), wherein an external signal line which inputs the modulation signal to the modulation electrode is connected to the modulation electrode; and a relay line which connects the connector and the modulation electrode and is formed on a relay substrate (7). Impedance of the relay line changes stepwise or continuously, and reflection of the modulation signal in the optical waveguide element module is suppressed.
摘要翻译： 提供了一种光波导元件模块，其抑制调制信号的反射和调制信号的衰减，即使当光波导元件的调制电极的阻抗和用于从外部输入调制信号的传输线的阻抗 光波导元件彼此不同。 光波导元件模块设置有光波导元件，该光波导元件具有由具有电光效应的材料构成的基板（1），形成在基板上的光波导（2），以及调制电极（3） 在光波导中传播的光波; 连接器（8），其中将调制信号输入到所述调制电极的外部信号线连接到所述调制电极; 和连接器和调制电极并形成在继电器基板（7）上的中继线。 继电器线路的阻抗逐步或连续地变化，抑制了光波导元件模块中的调制信号的反射。
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公开(公告)号：US20140205229A1
公开(公告)日：2014-07-24
申请号：US13911550
申请日：2013-06-06
申请人： EOSpace Inc.
发明人： Suwat Thaniyavarn
IPC分类号： G02F1/225
CPC分类号： G02F1/225 , G02F1/0316 , G02F1/0356 , G02F1/2255 , G02F2001/212 , G02F2201/127
摘要： Improved optical interferometric modulators have a small waveguide spacing so that the waveguide pair are close to the central electrode, to enhance electro-optic interaction. Asymmetric waveguides with differential indices are used to effectively de-couple the waveguide pair. Multiple sections of asymmetric waveguide pairs with alternating differential indices are used to achieve chirp-free operation. Another version of the device utilizes transmission-line electrode that weave closer to one of the waveguide pair alternately between sections. Another version of the device utilizes waveguide structure that one of the waveguide is closer to the central electrode in alternate section. To improve efficiency further, a DC bias is provided on the outer electrodes configured as an RF-ground but DC-float electrodes. Another improvement is to have a slot is cut underneath the waveguide region to effectively reduce to thickness of the substrate. These improvements lead to higher modulator efficiency.
摘要翻译： 改进的光学干涉式调制器具有小的波导间隔，使得波导对靠近中心电极，以增强电光相互作用。 使用具有差分指数的非对称波导来有效地去耦合波导对。 使用具有交替差分指数的不对称波导对的多个部分来实现无啁啾操作。 该器件的另一个版本利用传输线电极，它们在部分之间交替地编织在波导对中的一个上。 该器件的另一个版本使用波导结构，其中一个波导在交替部分更靠近中心电极。 为了进一步提高效率，在被配置为RF接地但DC浮子电极的外部电极上提供DC偏压。 另一个改进是在波导区域下面切割槽以有效地减小到衬底的厚度。 这些改进导致更高的调制器效率。
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