专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20030194164A1 Optical modulator 有权
公开(公告)号：US20030194164A1
公开(公告)日：2003-10-16
申请号：US10428866
申请日：2003-05-05
申请人： Fujitsu Limited
发明人： Masaharu Doi , Shinji Taniguchi , Masaaki Ohyama , Masaki Sugiyama
IPC分类号： G02F001/035 , G02B006/10
CPC分类号： G02F1/2255
摘要： The invention provides an optical modulator which suppresses the loss of a microwave which advances through an electrode and of light which propagates in a waveguide and makes the losses in individual arm waveguides substantially equal to each other to suppress the deterioration of the extinction coefficient to improve the transmission quality. The optical modulator includes a substrate having an electro-optical effect and having a ridge, first and second grooves and first and second banks formed thereon, a Mach-Zehnder optical waveguide, an electrode, and first and second recesses formed at symmetrical positions with respect to the ridge on the first and second banks, respectively. The optical modulator is applied, for example, to a transmission side apparatus for a long distance optical transmission system.

2. 发明申请

US20030147575A1 Optical modulator module and optical modulator 有权
标题翻译：光调制器模块和光调制器
公开(公告)号：US20030147575A1
公开(公告)日：2003-08-07
申请号：US10273093
申请日：2002-10-18
申请人： FUJITSU LIMITED
发明人： Masaki Sugiyama , Tadao Nakazawa
IPC分类号： G02F001/035
CPC分类号： G02F1/0305 , G02F1/2255 , G02F2201/14
摘要： The invention provides an optical modulator module by which a dip appearing in a frequency characteristic of a microwave from a DC component to a high-frequency component can be reduced while maintaining the mechanical strength and facilitating handling of a substrate and besides securing the long-term reliability without processing the substrate itself. The optical modulator module includes a substrate, an optical modulator including an optical waveguide, a signal electrode, and a ground electrode, and a housing in and to which the optical modulator is accommodated and secured. The shape of a longitudinal section of the other portion of the optical modulator module than the substrate is asymmetrical with respect to a perpendicular line with which the portion of the signal electrode which extends in parallel to the optical waveguide is bisected in the longitudinal direction. The optical modulator module is applied typically to an optical communication system.
摘要翻译：本发明提供了一种光调制器模块，通过该光调制器模块可以减少从DC分量到高频分量的微波频率特性出现的下降，同时保持机械强度并促进基板的处理，并且除了确保长期无需处理基板本身的可靠性。光调制器模块包括基板，包括光波导，信号电极和接地电极的光调制器，以及光调制器被容纳并固定在其中的外壳。光调制器模块的另一部分的纵向部分的形状比衬底的形状相对于垂直线是不对称的，垂直线与信号电极平行于光波导延伸的部分沿长度方向平分。光调制器模块通常应用于光通信系统。

3. 发明申请

US20030231369A1 Optical modulator 有权
标题翻译：光调制器
公开(公告)号：US20030231369A1
公开(公告)日：2003-12-18
申请号：US10369755
申请日：2003-02-21
申请人： FUJITSU LIMITED
发明人： Masaki Sugiyama , Tadao Nakazawa
IPC分类号： G02F001/00 , G02B026/00
CPC分类号： G02F1/0356
摘要： Desired characteristic impedance can be obtained in an optical modulator. The optical modulator includes a substrate having the electrooptic effect; an optical waveguide formed on a surface of the substrate; and a signal electrode and a ground electrode formed in the vicinity of the optical waveguide, wherein the signal electrode and the ground electrode include an interaction portion and an extraction portion, and a groove is formed between the signal electrode and the ground electrode located in the extraction portion area.
摘要翻译：可以在光调制器中获得期望的特性阻抗。光调制器包括具有电光效应的基片; 形成在所述基板的表面上的光波导; 以及形成在光波导附近的信号电极和接地电极，其中信号电极和接地电极包括相互作用部分和提取部分，并且在信号电极和位于提取部分区域。

4. 发明申请

US20030151793A1 Optical modulator having element for varying optical phase by electrooptic effect 有权
标题翻译：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
申请人： FUJITSU LIMITED
发明人： Masaki Sugiyama , Masaharu Doi , Tadao Nakazawa
IPC分类号： G02F001/03 , G02F001/07 , G02F001/01
CPC分类号： G02F1/0356 , G02F1/2255 , G02F2201/127
摘要： 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
摘要翻译：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

5. 发明申请

US20030147591A1 Optical waveguide device and optical modulator 有权
标题翻译：光波导器件和光调制器
公开(公告)号：US20030147591A1
公开(公告)日：2003-08-07
申请号：US10345938
申请日：2003-01-17
申请人： Fujitsu Limited
发明人： Masaharu Doi , Masaki Sugiyama , Tadao Nakazawa
IPC分类号： G02B006/26 , G02F001/035
CPC分类号： G02F1/225 , G02F1/0123 , G02F2201/16 , G02F2203/21
摘要： An optical waveguide device includes a substrate having an electro-optical effect, an optical waveguide formed on the substrate, an electrode provided for the optical waveguide, a monitoring optical waveguide for guiding part of light outputted from the optical waveguide as monitor light, an attenuation section provided for the monitoring optical waveguide for attenuating the monitor light, and a light detection section for detecting the intensity of the monitor light guided by the monitoring optical waveguide and attenuated by the attenuation section.
摘要翻译：光波导器件包括具有电光效应的基板，形成在基板上的光波导，设置在光波导上的电极，用于引导从光波导输出的光的一部分作为监视光的监视光波导，衰减以及光检测部，用于检测由监视光波导引导并被衰减部衰减的监视光的强度。

6. 发明申请

US20030147576A1 Optical waveguide device 有权
标题翻译：光波导器件
公开(公告)号：US20030147576A1
公开(公告)日：2003-08-07
申请号：US10298560
申请日：2002-11-19
申请人： FUJITSU LIMITED
发明人： Masaharu Doi , Tadao Nakazawa , Masaki Sugiyama , Masaaki Ohyama
IPC分类号： G02F001/035
CPC分类号： G02F1/225
摘要： The present invention provides an optical waveguide device wherein a driving voltage to be applied is reduced. The optical waveguide device comprises a substrate cut in a Z-axis direction and having an electro-optical effect, an interference type optical waveguide formed on the substrate for causing lights which propagate along a plurality of parallel optical waveguides to interfere with each other, and a lumped-constant type electrode for applying a voltage for the electro-optical effect to the light propagating along the optical waveguides which form the interference type optical waveguide. The lumped-constant type electrode complements potentials to be supplied to adjacent ones of the plurality of parallel optical waveguides to each other such that voltages having an equal absolute value but having the opposite signs are applied to the adjacent optical waveguides. The apparatus of the present invention is applied to, for example, an optical communication system.
摘要翻译：本发明提供了一种光波导器件，其中所施加的驱动电压降低。光波导装置包括：沿Z轴方向切割并具有电光效应的基板;形成在基板上的干涉型光波导，用于使沿着多个平行光波导传播的光彼此干涉;以及用于将电光效应的电压施加到沿着形成干涉型光波导的光波导传播的光的集总常数型电极。集总常数型电极补充供给多个平行光波导中的相邻光波导的电位，使得具有相等绝对值但具有相反符号的电压被施加到相邻的光波导。本发明的装置应用于例如光通信系统。

7. 发明申请

US20040184755A1 Optical waveguide, optical device, and method of manufacturing optical waveguide 有权
标题翻译：光波导，光学器件和制造光波导的方法
公开(公告)号：US20040184755A1
公开(公告)日：2004-09-23
申请号：US10766019
申请日：2004-01-29
申请人： FUJITSU LIMITED
发明人： Masaki Sugiyama , Tadao Nakazawa
IPC分类号： G02B006/10 , G02F001/035
CPC分类号： G02F1/2255 , G02B6/12007 , G02B6/1228 , G02B6/125 , G02B6/1342 , G02B6/32 , G02B6/322 , G02B6/4206 , G02B6/4214 , G02B2006/12097 , G02B2006/12119 , G02B2006/12142 , G02F2201/063
摘要： An optical waveguide is formed on a substrate and includes a curved ridge structure, a curved optical path, and a buffer layer. The curved ridge structure is formed on the substrate so as to have a curvature in a longitudinal direction of the curved ridge structure. The curved optical path is formed along the curved ridge structure. The buffer layer covers a side of the ridge structure and has a lower refractive index than a refractive index of the substrate.
摘要翻译：光波导形成在基板上，并且包括弯曲脊结构，弯曲光路和缓冲层。弯曲脊状结构形成在基板上，以便在弯曲脊状结构的纵向具有曲率。弯曲的光路沿弯曲的脊结构形成。缓冲层覆盖脊结构的一侧，折射率低于衬底的折射率。

8. 发明申请

US20040109223A1 Optical modulator and design method therefor 有权
公开(公告)号：US20040109223A1
公开(公告)日：2004-06-10
申请号：US10724721
申请日：2003-12-02
申请人： Fujitsu Limited
发明人： Masaki Sugiyama , Tadao Nakazawa
IPC分类号： G02F001/00
CPC分类号： G02F1/2255
摘要： A high-speed, high-performance optical modulator operating with a reduced drive voltage without sacrificing modulation bandwidth. The modulator has an optical waveguide fabricated on a crystal substrate. A signal electrode is on a ridge on the substrate. Ground electrodes are formed on both sides of the signal electrode. A gap between the signal and ground electrodes is at least 44 nullm, and an interaction length of the signal electrode is at least 41 mm. The modulator can operate at 40 Gbps or higher.

9. 发明申请

US20030169478A1 Optical modulator and design method therefor 有权
标题翻译：光调制器及其设计方法
公开(公告)号：US20030169478A1
公开(公告)日：2003-09-11
申请号：US10233471
申请日：2002-09-04
申请人： FUJITSU LIMITED
发明人： Masaki Sugiyama , Tadao Nakazawa
IPC分类号： G02F001/00
CPC分类号： G02F1/2255
摘要： A high-speed, high-performance optical modulator operating with a reduced drive voltage without sacrificing modulation bandwidth. The modulator has an optical waveguide fabricated on a crystal substrate. A signal electrode is on a ridge on the substrate. Ground electrodes are formed on both sides of the signal electrode. A gap between the signal and ground electrodes is at least 44 nullm, and an interaction length of the signal electrode is at least 41 mm. The modulator can operate at 40 Gbps or higher.
摘要翻译：高速，高性能的光学调制器，可以在降低驱动电压的情况下工作，而不会牺牲调制带宽。调制器具有制造在晶体衬底上的光波导。信号电极位于衬底上的脊上。接地电极形成在信号电极的两侧。信号和接地电极之间的间隙至少为44μm，信号电极的相互作用长度至少为41mm。调制器可以工作在40 Gbps或更高。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式