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公开(公告)号：US20030215170A1
公开(公告)日：2003-11-20
申请号：US10389697
申请日：2003-03-12
Applicant: Telecommunications Research Laboratories
Inventor： Sean V. Hum , Robert J. Davies , Michal Okoniewski
IPC: G02F001/035
CPC classification number: G02F1/0356 , G02F2201/127
Abstract: An electro-optic modulator structure for particular use in narrowband optical subcarrier systems. A traveling wave is established across the active region of the device, instead of a standing wave. This is accomplished through the use of a directional resonator structure that prevents reverse-traveling waves from being established within the resonator. Hence, the electric field is applied to the traveling optical wave in a similar fashion to a traveling-wave modulator, except that the traveling wave has a much greater amplitude due to the build-up of energy inside the resonator. Since the modulator is operated in a traveling-wave fashion, it can be tuned to operate at any frequency using tuning elements, regardless of the length of the active region. Furthermore, the microwave and optical signals can be velocity-matched to mitigate optical transit time effects that are normally associated with a resonant modulator utilizing a standing-wave electrode structure.
Abstract translation: 一种特别用于窄带光子载波系统的电光调制器结构。 在设备的有源区域之间建立行波，而不是驻波。 这是通过使用防止在谐振器内建立反向行波的定向谐振器结构来实现的。 因此，与行波调制器相似的方式将电场施加到行进光波，除了由于谐振器内的能量的积聚而使行波具有大得多的振幅。 由于调制器以行波方式操作，所以可以使用调谐元件将其调谐到任何频率，而与有源区的长度无关。 此外，微波和光信号可以被速度匹配以减轻通常与利用驻波电极结构的谐振调制器相关联的光通过时间效应。
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192.发明申请Optical modulator having element for varying optical phase by electrooptic effect 有权光调制器具有通过电光效应改变光学相位的元件公开(公告)号：US20030151793A1
公开(公告)日：2003-08-14
申请号：US10285419
申请日：2002-11-01
Applicant: FUJITSU LIMITED
Inventor： Masaki Sugiyama , Masaharu Doi , Tadao Nakazawa
IPC: G02F001/03 , G02F001/07 , G02F001/01
CPC classification number: G02F1/0356 , G02F1/2255 , G02F2201/127
Abstract: A low voltage modulation signal can be realized while reducing reflection and radiation of a high frequency modulation signal in an optical modulator. The optical modulator includes an electrooptic effect element having a signal electrode and a ground electrode thereupon each provided with a pad, and varying optical phase by the electrooptic effect and; a relay substrate constituted of a dielectric wafer on which a coplanar waveguide connected to the signal electrode pad and the ground electrode pad on the electrooptic effect element is formed; and a connector having a center conductor and an external conductor respectively connected to the coplanar waveguide of the relay substrate, and supplying a modulation signal of microwave band to the signal electrode of the electrooptic effect element, wherein, when the modulation signal includes a component of 30 GHz and a pad space between the signal electrode pad and the ground electrode pad of the electrooptic effect element is defined as S nullnullmnull and a pad height is defined as H nullnullmnull, the pad height is no greater than 300 and the relation is set asnull0.002H2null1.3Hnull160
Abstract translation: 可以在减少光调制器中的高频调制信号的反射和辐射的同时实现低电压调制信号。 光调制器包括具有信号电极和接地电极的电光效应元件，每个电极具有焊盘，并且通过电光效应改变光学相位; 由形成有与信号电极焊盘连接的共面波导和电光效应元件的接地电极焊盘的电介质晶片构成的继电器基板; 以及连接器，其具有分别连接到所述中继基板的共面波导的中心导体和外部导体，并且向所述电光效应元件的信号电极提供微波频带的调制信号，其中，当所述调制信号包括 信号电极焊盘和电光效应元件的接地电极焊盘之间的焊盘空间定义为S [m]，焊盘高度被定义为H [m]，焊盘高度不大于300，并且 关系设定为-0.002H2 + 1.3H-160
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公开(公告)号：US20020159738A1
公开(公告)日：2002-10-31
申请号：US10108250
申请日：2002-03-27
Applicant: NGK Insulators, Ltd.
Inventor： Kenji Aoki , Jungo Kondo , Atsuo Kondo , Osamu Mitomi
IPC: G02B006/10
CPC classification number: G02F1/0356 , G02F1/2255 , G02F2201/127
Abstract: An optical waveguide device 1A has an optical waveguide substrate 10A and a supporting substrate 6 supporting the substrate 10A. The substrate 10A has a main body 4 made of an electrooptic material and having first main face 4a and a second main face 4b, an optical waveguide 3 formed in or on the main body 4 and an electrode 2A, 2B or 2C formed on the side of the first main face 4a of the main body 4. The supporting substrate 6 is joined with the second main face 4b of the main body 4. A low dielectric portion 11 with a dielectric constant lower than that of the electrooptic material is formed in the supporting substrate 6.
Abstract translation: 光波导元件1A具有光波导基板10A和支撑基板10A的支撑基板6。 基板10A具有由电光材料制成的主体4，其具有第一主面4a和第二主面4b，形成在主体4中或之上的光波导3和形成在主体4上的电极2A，2B或2C 主体4的第一主面4a。支撑基板6与主体4的第二主面4b连接。介电常数低于电光材料的低介电部分11形成在 支撑基板6。
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Patent Agency Ranking
公开(公告)号：US06400494B1
公开(公告)日：2002-06-04
申请号：US09636568
申请日：2000-08-10
Applicant: Jungo Kondo , Atsuo Kondo , Kenji Aoki
Inventor： Jungo Kondo , Atsuo Kondo , Kenji Aoki
IPC: G02F100
CPC classification number: G02F1/0356 , G02F1/2255 , G02F2201/127
Abstract: A traveling wave optical modulator comprising a substrate made of a ferrodielectric electro-optic single crystal and having a pair of opposing main planes, an optical waveguide formed on a side of one of the main planes of the substrate, and a pair of electrode films which apply a voltage for modulating a light transmitting through the optical waveguide and between which the optical waveguide is located, wherein the thickness of each of the electrode films is not less than 20 &mgr;m and a width of a gap between a pair of the electrode films is not less than 25 &mgr;m.
Abstract translation: 一种行波光学调制器，包括由电介质电光单晶制成并具有一对相对的主平面的基板，形成在基板的一个主平面侧的光波导和一对电极膜， 施加用于调制透过光波导的光的电压，并且光波导位于该光波导之间，其中每个电极膜的厚度不小于20μm，并且一对电极膜之间的间隙的宽度为 不少于25个妈妈。
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公开(公告)号：US06310700B1
公开(公告)日：2001-10-30
申请号：US09662554
申请日：2000-09-15
Applicant: Gary E. Betts
Inventor： Gary E. Betts
IPC: G02B636
CPC classification number: B82Y10/00 , G02F1/2255 , G02F2201/07 , G02F2201/127
Abstract: This is an electro-optic modulator having an electro-optic substrate such as lithium niobate, an optical waveguide defined within the substrate, an electrode structure including a microwave transmission line elevated from the substrate by conductive legs. In one embodiment, a low-dielectric constant buffer layer is disposed between the substrate and the transmission line. The conductive legs extend from the transmission line to a surface of the substrate toward the waveguide, through the buffer layer. The microwave transmission line is elevated from the substrate at a distance such that the electrical propagation velocity is at a maximum. The high electrical velocity is offset by a loading capacitance introduced by the conductive legs which slows the electrical velocity down on the transmission line to match the optical velocity. Pairs of opposing conductive legs provide a strong electric field for modulating the optical signal.
Abstract translation: 这是一种电光调制器，其具有诸如铌酸锂之类的电光衬底，限定在衬底内的光波导，包括通过导电腿从衬底升高的微波传输线的电极结构。 在一个实施例中，低介电常数缓冲层设置在基板和传输线之间。 导电支腿通过缓冲层从传输线延伸到基板的表面朝向波导。 微波传输线从衬底以一定距离升高，使得电传播速度最大。 高电速通过由导电支路引入的负载电容来抵消，这使传输线上的电速降低以匹配光速。 一对相对的导电腿提供强电场来调制光信号。
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公开(公告)号：US5729378A
公开(公告)日：1998-03-17
申请号：US742400
申请日：1996-11-04
Applicant: Hideaki Tanaka , Yuichi Matsushima
Inventor： Hideaki Tanaka , Yuichi Matsushima
CPC classification number: G02F1/0356 , G02F1/0344 , G02F2201/127
Abstract: An optical device includes a semiconductor optical modulator element (46) which is connected to an end of a signal line (42) in form of a microstrip high-frequency line and whose other electrode is connected to a ground electrode (48) by a bonding wire (50). The signal line (42) includes first and second line portions (42a, 42b). The first line portion (42a) nearer to the entrance of a high-frequency signal has a width W1 determined to adjust its characteristic impedance to 50.OMEGA. and a length L1 equal to an integer multiple of 1/4 of its own guide wavelength. The second line portion (42b) has a width W2 determined to adjust its impedance to an intermediate value between the impedance of the optical modulator element 46 and the impedance of the first line portion (42a), and a length L2 equal to an integer multiple of 1/4 of its own guide wavelength.
Abstract translation: 光学装置包括半导体光调制元件（46），其以微带高频线的形式连接到信号线（42）的端部，并且其另一电极通过接合连接到接地电极（48） 电线（50）。 信号线（42）包括第一和第二线部分（42a，42b）。 更靠近高频信号入口的第一线部分（42a）具有确定的宽度W1，以将其特性阻抗调整到50欧姆，长度L1等于+ E的整数倍， 它自己的指南波长。 第二线部分（42b）具有确定为将其阻抗调节到光调制器元件46的阻抗和第一线部分（42a）的阻抗之间的中间值的宽度W2，以及等于整数倍的长度L2 的+ E，fra 1/4 + EE的引导波长。
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公开(公告)号：US5455876A
公开(公告)日：1995-10-03
申请号：US274313
申请日：1994-07-13
Applicant: Samuel Hopfer , Yosef Shani
Inventor： Samuel Hopfer , Yosef Shani
CPC classification number: G02B6/12004 , G02F1/0356 , G02F1/2255 , G02F2201/07 , G02F2201/127
Abstract: An improved high-speed external optical modulator, modulated by RF waves, which velocity matches the RF waves with the optical waves is disclosed. The apparatus includes a lithium niobate substrate on which is formed an optical waveguide, electrically floating electrodes, a low dielectric buffer layer and electrodes carrying the modulating RF energy. At least one floating electrode may comprise a series of spaced electrode segments for enhanced performance at high frequencies.
Abstract translation: 公开了一种由RF波调制的改进的高速外部光学调制器，其速度与RF波与光波匹配。 该装置包括铌酸锂基板，其上形成有光波导，电浮动电极，低介电缓冲层和承载调制RF能量的电极。 至少一个浮动电极可以包括一系列间隔开的电极段，用于在高频下增强性能。
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公开(公告)号：US5074631A
公开(公告)日：1991-12-24
申请号：US492129
申请日：1990-03-13
Applicant: Hiroshi Hamano , Izumi Amemiya , Hiroshi Nishimoto , Takefumi Namiki , Izumi Yokota , Tadashi Okiyama , Minoru Seino
Inventor： Hiroshi Hamano , Izumi Amemiya , Hiroshi Nishimoto , Takefumi Namiki , Izumi Yokota , Tadashi Okiyama , Minoru Seino
IPC: G02F1/03 , G02F1/225 , G02F1/313 , H04B10/2507
CPC classification number: G02F1/0327 , G02F1/225 , G02F1/3136 , H04B10/2507 , G02F2201/127
Abstract: A Mach-Zehnder interferometer type modulator, constructed of first and second optical waveguides, first and second electrodes cooperating with the same, and a driving voltage source, wherein a driving voltage source is constructed of first and second driving units which drive independently the first and second electrodes in accordance with a data input and wherein the first and second driving units apply first and second driving voltages, individually determined, to the first and second electrodes.
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